Two leading names in motor control work together to ease development challenges for engineers and students. They jointly created a plug-and-play servo control development kit for drives, robotics and automation.
STMicroelectronics, a global semiconductor leader serving customers across the spectrum of electronics applications, is working with maxon, a leading precision-drive specialist, to accelerate the design of robotics applications and industrial servo drives. The companies demonstrated a jointly developed servo control kit at sps 2019 trade show in Nuremberg.
The EVALKIT-ROBOT-1 is a plug-and-play solution aimed to help users easily approach the world of precise positioning and high-end motion in servo drives and robotics. A maxon 100-Watt BLDC motor with built-on 1024-pulse incremental encoder is included in the kit, embodying the company’s expertise in magnetic design in precision motors that ensures smoothness and balance to allow fine control even at low rotor speeds.
The servo control board supplied with the kit contains ST’s STSPIN32F0A intelligent 3-phase motor controller and a complete inverter stage built with ST power transistors ready to connect to the motor. Motor-control firmware is also included, making it easy for users to start the motor and begin sending commands.
“Our motors are trusted worldwide to deliver high quality, precision, and accuracy,” said Felix Herger, Head of Business Development Industrial Automation at maxon. “Teaming with ST has created a platform that makes these attributes more easily accessible to a wider variety of product designers.”
“Designing high-end motion controls with accurate positioning capabilities is complex and time-consuming, demanding specialist skills. Working with maxon, we have now put those skills in a box for our customers,” said Branimir Ivetic, Motion Control Product Marketing Manager, STMicroelectronics. “The EVALKIT-ROBOT-1 kit accelerates development of next-generation robotics and automation that delivers advanced capabilities and dexterity with excellent reliability and ease of use.”
Further technical information:
ST’s STSPIN32F0A system-in package contains critical circuitry for motor control, including an STM32F031C6 microcontroller and three-phase inverter driver in a compact 7mm x 7mm VFQFPN package. The microcontroller comes loaded with plug-and-play firmware for MODBUS communication and field-oriented control (FOC) with precise positioning capabilities. Power management and current sensing circuitry are also embedded in the device making it more flexible and versatile.
The maxon EC-i 40, 40mm-diameter, 100-Watt brushless (BLDC) motor embeds a maxon ENX 16 EASY 1024-pulse incremental encoder for precision control. Hall sensors for detecting rotor position are included. The motor features an optimised design for high output torque with low cogging torque, which permits smooth motion across the speed range and enhances positioning precision.
The 3-phase BLDC inverter power stage features ST’s STL7DN6LF3 60V, low on-resistance, N-channel MOSFETs, capable of 6A maximum output for driving the motor. The kit is available now at ST.com
For further information please contact maxon motor Australia tel. +61 2 9457 7477.
Roger Frigola, Optimisation Engineer at Emirates Team New Zealand, presented to the maxon global Group at their annual management meeting in Brunnen, Switzerland on the 18 September, 2019.
maxon Group were delighted to welcome Roger Frigola (MSc Aerospace Engineering and PhD Artificial Intelligence) from Emirates Team New Zealand at their annual management meeting. In their capacity as Official Supplier to Emirates Team New Zealand, maxon Group received insight into the process and technicalities of designing the AC75 Class yacht. For the current America’s Cup campaign, the design process began in 2018 with the publication of the Class Rule that states specific design parameters set out by the Deed of Gift. Roger has been involved in the America’s Cup since 2014 and has experience in the McLaren F1, Ferrari F1, Porsche Le Mans and Red Bull F1 Motorsports.
Emirates Team New Zealand: Current Defenders of the America’s Cup
The America’s Cup is the world’s oldest trophy in international sport, captivating the world since its inception in 1851. Emirates Team New Zealand are three times winner, current Defenders of the America’s Cup and the first non-American competitor to successfully defend the trophy. It would appear to remain that if you won the America’s Cup you would stay with the same type of boat. This isn’t the case for Emirates Team New Zealand, who created a New Class of Yacht – the AC75. Innovation is key and the entire concept was proven only through use of a simulator without any prototypes. The Challengers have developed smaller boats and tested them, but Emirates Team New Zealand placed their trust in the simulation and the team of people working behind the scenes.
For the new AC75 Class of Yacht, Emirates Team New Zealand designed the system that all the teams use to raise and lower the foils. The Design & Engineering Team also work with HP using 3-D printed components for the Yacht.
A support team of more than 150 people contribute expertise from across many disciplines. There is the crew of 11 sailors (8 of those are grinders) and around 25 people within the design and engineering team including naval architects, structural and mechanical engineers, simulators and software developers. Then there is the shore people, boat builders, marketing, media, lawyers, accounting, physiotherapists, trainers and cooks.
AC36: a new rule
One method of gathering data for the performance of the Yacht and the Sailors was to test through physical experiments in wind tunnels or towing tanks. However this America’s Cup campaign is the first to prohibit any experimental testing in wind tunnels or towing tanks. This new concept and Yacht design has been modelled on physics with design by optimisation. The results of the simulation data were then compared to the actual boat reactions with testing on and off the water looking closely at safety issues, strains, stress loads etc. The Computational fluid dynamics (the examination of fluid flow in accordance with its physical properties such as velocity, pressure, temperature, density and viscosity) were modelled on the conditions of a wind tunnel. The amount of data that is collected is so large it’s stored across 8 HP desktop machines.
The members of the Design & Engineering Team spend the majority of their time on the Chase Boat, analysing real-time data from the AC75 yacht test runs. The thousands of gigabytes per day that are captured are compared against the computational physics from the simulation data and used in the build of the second boat that will sail in the America’s Cup.
The America’s Cup World Series, Sardinia, April 2020
All teams will meet for the first time between April 23-26, 2020 with the America’s Cup World Series kicking off in Cagliari, Sardinia. The fearlessness with adopting innovation and confidence placed in the simulation, combined with the knowledge, skills and enthusiasm of Emirates Team New Zealand – not to mention the backing from Sponsors, Official Suppliers and Supporters – advocate strongly the retention of Current Defender of the America’s Cup. The prowess of the AC75’s will be on full display and we eagerly await seeing the boat racing to its full potential.
maxon Group is an Official Supplier to Emirates Team New Zealand. We follow the progress of their journey as Defender in the 36th America’s Cup campaign, to be held in Auckland, New Zealand in March 2021.
maxon motor Australia | tel. +61 2 9457 7477.
No wrong answers?
With four AC75s now successfully launched and actively foiling, what have we learned about the outcomes of the various design strategies chosen by each of the teams for their first-generation boats?
One thing seems clear – that there is more than one way of creating a 75-foot monohull that flies above the water on foils – a fact evidenced by the four distinctly different looking yachts that the teams have independently come up with.
There are so many ways to compare and contrast just how different all four boats look. For instance, the cigar-shaped bow of American Magic’s Defiance and the striking cutaway foredeck and slab sides of Ineos Team UK’s Britannia.
Then there is the comparatively flat bottoms of the American’s and British boats compared to the rounded and v-shaped longitudinal ‘bustles’ underneath the Emirates Team New Zealand and Luna Rossa Prada Pirelli boats respectively.
The closer you look the more the differences you find, and it is tempting to oversimplify things by falling back on the comfortable, well-worn adage that: “Somebody is going to be right, and somebody is going to be wrong”.
But is that really the case? What if in fact – at this stage – nobody is 100 per cent right, or 100 per cent wrong?
Given that all four teams have been up and foiling on these revolutionary boats within days on launching them, isn’t it possible that all four have come up with competitive designs – the performance of which may vary only marginally based on weather conditions and the speed with which the crews get to grips with sailing them?
Although the teams and their spies will have a gut feeling for who amongst them is fast or slow and in what conditions, they will be keeping that information close to their chest right now.
That means that the rest of us will have to wait six months until the teams all come together for the first time for four days of racing at the opening act of the America’s Cup World Series in Cagliari, Sardinia next April 23 – 26 to learn who – if anyone – has stolen a march on the rest.
For now though we can happily continue to pore over every photograph the teams release and squint as we step frame-by-frame through their videos for evidence to support our speculative theories about what the crews are trying out as they battle to get master their AC75s.
However, the reality is that there are so many differences between the four boats that we cannot hope to see even if we were charging alongside in a chase boat.
Those are the hidden differences in the systems that control the flaps on the foils, that determine the constantly shifting 3-D aerodynamic shape of the ground-breaking double-skinned mainsails, and a myriad of other complex elements that make up these highly technological AC75s.
How to effectively balance the complexity and functionality of these systems with the overall reliability of the boat will no doubt be high on the list of problems keeping the design teams and the sailors awake at night.
We may not get to know much about those critical concepts before this 36th edition of the America’s Cup is all played out, but they could easily prove to be the difference between success and failure when the competitive phase begins.
One question that is yet to be definitively answered concerns the crew logistics when manoeuvring the AC75s. Given the centrally divided cockpits on all four boats and the trend towards deck-sweeper mainsails, who amongst the crew will be changing sides and how will they be doing it.
With 11 on the crew, clearly not everyone is going to be running from one side to the other on the tacks and the gybes. Some teams are rumoured to be moving just a handful of sailors each time, while others – it is believed – are experimenting with two helmsman, one on either side of the boat.
It’s a radical approach for sure, but given that the team that can keep its boat in the air the most in a race will likely emerge the winner, it is a technique that is likely well worth trying.
THE AC75 CLASS
Click here to find out the parameters within which teams can design a yacht eligible to compete in the 36th America’s Cup.
maxon Group is an Official Supplier to Emirates Team New Zealand. We follow the progress of their journey as Defender in the 36th America’s Cup campaign, March 2021.
Produced entirely in-house, maxon Group Australia designed and delivered a complete solution on a system that sensed, and measured, the subjective perception of pressure.
maxon have long been involved in assisting customers with the selection of their DC motors and drive systems within haptic applications. The obvious involvement of maxon is support in selecting the appropriate DC motor and controller. It is perhaps not a traditional connection that maxon be involved in the development of a device from concept stage through to the creation of the algorithms to gather data and provide valid haptic feedback. maxon Australia R&D team led by Dr Carlos Bacigalupo created such a device in-house and all in one mechanism.
Macquarie University Australia PhD candidate David McNaughton initially contacted maxon in July 2018 for assistance with DC motor selection. David needed to build a sensitive test instrument as part of his PhD thesis. After many communications with maxon application engineers, David realised there was no better candidate to build complex motorised instrumentation than the motor manufacturers themselves.
David said “It became quickly apparent in the discussions with maxon that the skills and knowledge to build such a device required a high level of specialisation. After meeting with the application engineers, I was confident they could deliver this bespoke device in a timely manner. maxon were professional and detail orientated throughout the developmental stages of the device, which led to the device meeting brief specifications. The goal of this research is to understand important perceptual and sensory processes involved in the human body. maxon’s insights to improve the device compared to previous models has been crucial in making this possible”.
Complex force control
The aim of the instrument was to produce adjustable levels of force to the finger of a test subject. The forces needed to be generated in three specific methods. Each of these methods requires a specific behaviour from the motor controller. Either by being idle, directly targeted or manually controlled by a slider, the instrument had to comply with well defined experimental protocols.
Four different target forces were required for David’s tests. 1N, 1.5N, 2N and 2.5N and the forces needed to be randomly selectable and quickly applied by the operator. All test data needed to be recorded for later analysis.
There were three main considerations to the application:
- the DC motor and controller to switch between manual or automatic operation;
- the need to produce adjustable levels of force;
- real time recording and translation of data into meaningful language for analysis.
Of the many motors considered for the force application the maxon Rare Earth 50mm, 200W was selected because of its linear characteristics, detent free, coreless rhombic winding design, proportionally low mass inertia and a high torque constant of 242mNm/A allowing for extremely fine control over the applied pressure.
maxon DC motor RE50 © maxon group
Coupled with the motor was an optical encoder with 20,000 quad count resolution for feedback to the maxon EPOS 4 motion controller. Dr Carlos Bacigalupo said “Carefully selected gain adjustments and a well-tuned PID feedback loop are required for this type of sensitivity. The configuration and testing cycle is greatly accelerated by the powerful tuning wizards in the EPOS Studio, but it is also vital to have the ability to individually manage all necessary parameters within the controller’s object dictionary”. maxon provided a colour touch screen for operator interface, with custom quick set controls and overriding fine adjustment facilities. The test data is recorded to a USB stick.
maxon: expertise is beyond motors
maxon have supplied many motors to customers who develop their own systems. Being involved from the concept to the finalised product was an exciting step. “maxon Australia quickly became interested in the project and showed no hesitation in an ability to deliver” said David. “Their professionalism, in depth knowledge and enthusiasm to build the device were significant factors toward awarding the contract to Maxon. The design, construction and programming of this bespoke device would not be possible without the knowledge and expertise of maxon application engineers.”
maxon are excited to bring ideas to fruition and turn concepts into reality. This is a unique project that will have far reaching gains beyond helping David to achieve results for his PhD.
For application requirements involving system design, engineering, integration and complete drive systems please contact maxon Group Australia tel. +61 2 9457 7477.
Emirates Team New Zealand christened their first AC75 at their team base in the heart of the America’s Cup village in Auckland today.
The significant milestone was celebrated with the team, their families, sponsors and suppliers. The boat was christened “Te Aihe” (Dolphin) by Marcus Gerbich – member of the MND Foundation – and blessed by Ngati Whatua.
Emirates Team New Zealand COO Kevin Shoebridge, who has overseen the development and launch of plenty of boats over the years, was especially proud to be witnessing the Kiwi AC75 emerge for the first time.
“This is a significant occasion for the team, not just because it is another new boat, but really because when we won the America’s Cup in 2017 we very quickly had to come up with a new concept of boat that would really continue to push the boundaries of innovation and technology in the America’s Cup. So in the relatively short timeframe since November in 2017 when we published the concept, to seeing it in the flesh today is an amazing testament to the entire team willing to push things all the way from concept to design to build and fit out” said Shoebridge.
It has taken over 100,000 man-hours to design and build the boat with a group of about 65 people between designers and boat builders who have been working quietly throughout the past year.
Sean Regan has led the set-up of the team’s bespoke production facility on Auckland’s North Shore from a blank factory floor to producing the first AC75.
“We have had the pressure on since the moment we decided to establish our own production facility very early on in this campaign. We have built up a really great team of 42 fully committed people at the yard who have been working full-on to get this boat out the door,” said Regan.
“Even for the most experienced boat builders on the team, this has been a very unique build because it is such a sophisticated boat. But it is really encouraging that for a number of our junior and apprentice boat builders their first build has been on a boat that is really on the cutting edge of complexity in build, design and performance.”
Emirates Team New Zealand Head of Design Dan Bernasconi was a central figure in the development of the AC75 Class Rule before turning his team of designers’ attention to the specific design of the Emirates Team New Zealand boat.
“There’s a huge amount of innovation in the design and build of the AC75 – more than we saw in the AC50’s in Bermuda” said Bernasconi. “The AC75 is a completely new concept and has presented plenty of challenges across many areas – but this is precisely what the Rule was designed to do – to push development to the extreme. We haven’t been conservative in any aspect of our design; it’s not long until we need to commit to the design of our second boat, which we will ultimately race in the 2021 America’s Cup, so we need to test as many of our ideas as possible in the yacht we’re launching today.”
Unlike the other main Challengers, Emirates Team New Zealand has focused the development of their first boat entirely with their in-house simulator as opposed to building a smaller scale test boat to validate concepts on the water. So once the AC75 goes for its maiden sail, it will be the first time the team has collectively sailed since winning the America’s Cup on June 26th 2017.
“It won’t be without nerves the first time we go sailing, but I am sure that is no different for all of the teams.” said Glenn Ashby
“The AC75’s are big powerful and fast boats so they will be a handful, but from our understanding through our simulations they are inherently a safer boat to sail than what we have sailed in the past two America’s Cups. As with any new boat it is all about slowly getting it up to speed, learning how to sail it most efficiently, pushing the development of the designs and then putting in the hours in getting ready to race for the ACWS Sardinia in April 2020.”
Emirates Team New Zealand will now focus on a busy period of testing on Auckland’s Hauraki Gulf over the spring and summer months having the advantage of developing and training on the race area of the America’s Cup Match which will be raced in March 2021.
Emirates Team New Zealand CEO Grant Dalton concluded: “I wish to thank every single team member for the hard work they’ve done to get us to this day. A special thanks also to all our sponsors and partners for all of their valued support so far and everything they will continue to do during our journey towards the America’s Cup Match in 2021.
It is an exciting time, but things are about to get a whole lot more so from now.”
About the name:
The name Te Aihe (Dolphin) is based on the whakatauki (proverb):
“Mā te Aihe e tuitui ai i te ngaru moana, mā te Rangatira e tuitui ai i te tangata”.
“As the dolphin sows through the seas so does a leader sew people together”.
Using technology to set precedence
The AC75 Class is a 75 foot, high performance monohull governed by the AC75 Class Rule which was published on 29 March 2018. The Class Rule is open enough to guarantee a wide margin of freedom to the designers but introduces certain one-design elements for cost containment also.
The AC75 supplied parts – identical for all the teams – are the foil arms, the foil cant system and the rigging. The shape and base laminate of the mast is also controlled by the Class Rule.
The AC75 rotating mast is a 26.5 meter long one-design ‘D’ shaped section that weighs about 300kg and serves as the leading edge of the double skinned mainsail.
Emirates Team New Zealand’s mast has been built at Southern Spars in Auckland whereas the rigging package was built at Future Fibres in Valencia.
The two other one-design components are key to make the boat fly.
The foil arms, built at Persico Marine in Italy, are the result of a project led by Luna Rossa Challenge with the collaboration of all the America’s Cup teams and New Zealand based composite engineering consultancy Pure Design and Engineering. Each 4.5 metre long carbon foil arm has a wing attached to its tip. The foil wings are custom designed and built by each team.
Driving the foil arms is the electronic and hydraulic foil cant system (FCS), another one design supplied part, which moves the arms and wings in and out of the water. The foil cant system was designed by Emirates Team New Zealand and assembled in Auckland before being distributed to all teams earlier in the year.
The rest of the Class Rule is open and being a new concept, leaves the design quite open as no proven path has yet been defined for these types of boats. Any shrouding of the yachts in the 36th America’s Cup is prohibited so teams won’t be able to hide their different design approaches and subsequent developments.
The most visible differences will be seen in the hull shapes and deck layouts. Despite a number of basic constraints such as the length, the hull shape has few significant limits on shape or structure. Design teams will be looking for a shape with minimal drag in light-wind displacement mode while also addressing the stability required to generate thrust for take-off.
Evident differences will be displayed also in the foil wings and wing flaps as they are also open to design and, being T-style foils, their shapes have been less explored than the L- foils used in the last two Cups.
The double-surface mainsail – a new innovation of the 36th America’s Cup Class Rule – will be key in the performance of the boat and a lot of hours have been invested in its design.
The hydraulic and electronic control systems, powered and controlled by the crew, operate key components of the boat such as the foils and they have been subjected to important developments as well but will they remain a very guarded secret by each team.
All in the numbers
23: the length in metres of the new boat
26.5: the height in meters of the mast from the deck
11: the crew onboard
6.5: the weight in tonnes of the boat
5: the maximum beam of the boat and the foils’ maximum draft
4: the foil wing span in metres
65: number of people working on the design and build of the boat. 30 designers and 35 boatbuilders have put in the hours to design and build “Te Aihe”.
100,000+: number of man-hours it took to design and build the boat.
2021: the 36th America’s Cup will take place from the 6th to 21st of March 2021
1851: the year the America’s Cup was born
3: Times New Zealand has won the America’s Cup.
maxon Group is an Official Supplier to Emirates Team New Zealand. We follow the progress of their journey as Defender in the 36th America’s Cup campaign, March 2021.
maxon Group Australia are excited to announce their collaboration with innovative Australian space company, Space Industries, to develop new mining technologies on the moon.
It’s not every day you receive an inquiry to help build a rover that will mine the surface of the moon. When maxon was contacted by Space Industries CEO, Joshua Letcher, with this exact query, a remarkable collaboration was born.
Specialising in the development of lunar and space mining vehicles, subsystems and systems for space systems, in a world-first, Space Industries are designing and developing revolutionary technology: a rover to mine elements on the lunar surface. “Space Industries are leading the way in space mining by focusing on gas production to produce resources that will sustain life on the Moon and other planets, along with producing Helium-3 for use in Medical and Energy industries on Earth” said Letcher. Soon to be located at Australia’s only dedicated Space Precinct at Perth Airport in WA, Space Industries have strategically positioned themselves amongst other leading global companies involved in civil engineering and research & development within the sector.
It was maxon’s long-standing involvement working with agencies such as NASA, NASA’s Jet Propulsion Laboratory and European Space Agency, amongst others, that prompted Joshua Letcher to call maxon. maxon DC motors, drives systems and sensor technologies have already been used to drive several Mars rovers and withstood the conditions there. The DC motors resist brutal temperature changes, dust, dirt and storms. They are also built to survive a dynamic entry, descent and landing sequence as well as the harsh daily conditions on the moon. maxon Managing Director, Brett Motum, said “we are thrilled to be a part of not only an Australian first, but a world-first, invention that is going to redefine the term sustainable energy, open up exciting possibilities within the medical and energy sectors and of course, put Australia on the global Space map”.
It’s this type of application that sits at the heart of maxon – working with companies who share the same passion for innovation, technology and development of pioneering inventions. Particularly those that help to shape the future of this planet and perhaps even sustain life on the moon.
For further information please contact maxon Group Australia tel. +61 2 9457 7477 or Space Industries email@example.com
Emirates Team New Zealand 03 May, 2019.
Z Energy is to partner with Emirates Team New Zealand for the 36th America’s Cup as an Exclusive Supplier of fuel and biofuel for the 36th America’s Cup being hosted in Auckland over the summer of 2020/2021.
In coming together, both organisations have a strong desire to engage as many Kiwis as possible from around the country in supporting a successful defence.
Grant Dalton, CEO for Emirates Team New Zealand, highlighted why this was a great match. “We’re excited to partner with another prominent national New Zealand business that is passionate about the team and the America’s Cup.
We want to bring as many people throughout the whole of New Zealand together in our journey to defend the America’s Cup in 2021 and believe through working together with Z Energy and all of their stations and touchpoints we can extend our reach to all of our supporters in every small town and community around the country and bring them along for the ride.”
Mike Bennetts, CEO of Z Energy says “Emirates Team New Zealand have shown what it means to be truly innovative. There is a natural alignment for Z as we make a difference to our customers through the provision of sustainable transport solutions and innovation in our customer experience offers. We’re excited about the partnership and being able to help bring it to kiwis around the country.”
The partnership between Z Energy and Emirates Team New Zealand will see Z provide fuel, including options for Biofuel from New Zealand’s only largescale biofuel manufacturing facility located in Wiri, Auckland, along with other fuel transport solutions.
Customers of Z can expect to see opportunities to engage with Emirates Team New Zealand over the coming 18 months. Details of these will be shared as they are finalised.
For further information on DC motors for use in underwater and extreme environments please contact maxon motor Australia tel. +61 2 9457 7477.
maxon Group is an Official Supplier to Emirates Team New Zealand. We follow the progress of their journey as Defender in the 36th America’s Cup campaign, March 2021.
maxon is a Presenting Partner at the second CYBATHLON event in Zurich.
Due to take place on May 2nd and 3rd, 2020, the CYBATHLON is an exciting event run by ETH Zurich where people with physical disabilities compete against each other, overcoming everyday obstacles and showcasing state-of-the-art technical assistance systems. The competition presents new challenges (eg. the wheelchair circuit now includes opening a door with the aid of a robotic arm) and spans six disciplines:
- virtual racing using thought control
- bicycle racing with electrical muscle stimulation (FES)
- dexterity challenges with prosthetic arms
- obstacle course with prosthetic legs
- obstacle course with robotic exoskeletons
- obstacle course for powered wheelchairs.
maxon supported CYBATHLON in 2016 as a Partner. Among other contributions, the trainees of the company built a height-adjustable podium. maxon were keen to join the second event this time as a Presenting Partner. CEO Eugen Elmiger says: “We believe that excellent engineers with a curiosity for new things can make the world a better place. This is why maxon has supported this right from the start.” The company is involved in many of the participating teams, offering support with discounted drives and know-how through its Young Engineers Program. For more information please see https://drive.tech
Nearly all availability across the six disciplines has been taken, with two thirds of the teams coming from universities. The teams are currently in the development and testing stage setting their sights on successfully overcoming the obstacle course in a year’s time. Tickets are available now, for more information please visit www.cybathlon.com.
For more information on robotic technical assistance systems, such as DC motor and drive systems for prosthetics, exoskeletons or wheelchairs please contact maxon motor Australia tel. +61 2 9457 7477.
Brushless motor with encoder and gear. Customised to perfectly match critical servo motor requirements
Requiring up to 22Nm of intermittent torque with only a tiny amount of available space, only maxon motor could custom build the perfect solution for this application. The brushless DC motor contains an internal 1024cpt encoder and is only 22mm long.
Outrunner style pancake motors have an external rotor which offers both advantages and disadvantages. The brushless DC motor has the rotor magnets mounted on the outside of the stator giving the motor more available torque via the additional distance between where the force is produced and the shaft. Essentially, more leverage. However, having an external rotor leaves the rotating mass exposed to the operating environment where it could potentially be impacted upon and create imbalances on the motor.
maxon motor were able to combine a unique combination of a flat brushless DC motor with an internal 1024 count per turn encoder with a ceramic planetary gearhead to meet a customers’ application requirements, though the exposed rotor was a concern for the engineer. By re-designing the front mounting flange of the motor, maxon were able to build a custom rear cover for the motor to protect it and stay within the maximum 43mm available diameter. This must be designed around the thermal requirements of the motor when working in the application environment under the specific loads and duty cycles.
Customisation processes like this for specific requirements then become available for other applications and eventually catalogue components. The motor is now available for system voltages from 12V to 48V with internal encoders from 256 counts per revolution to 2048 counts. There is a ventilated version for high power density, a standard version and an enclosed version.
Contact maxon motor Australia for application assistance. + 61 2 9457 7477.
Unlocking new opportunities for a range of applications, Maxon’s EPOS4 Compact series motor controller can now be incorporated into EtherCAT networks.
Maxons compact controllers now speak another language: the new EtherCAT models comply with the CoE standard (CAN application layer over EtherCAT) and can be easily integrated into existing EtherCAT networks.
The new, intelligent motion controllers with realtime communication offer a simple, plug-and-play solution for controlling brushed DC and brushless EC motors with peak currents of up to 30A. With their modular design, they are particularly suited to applications with single or multi-axis systems in small devices and machines as well as robotics.
Also available is an extensive range of accessories to make the connection and integration process as seamless and easy to use as possible. Besides the intuitive “EPOS Studio” software, Windows DLL and Linux Shared Objects Libraries are also freely available for incorporating the controllers into a variety of master systems. As well, a detailed range of product documents are readily available.
The versatile EtherCAT controllers are available immediately in two power versions: 50V/8A and 50V/15A. Other variants in the Compact series (EPOS4 Compact 24/1.5 EtherCAT & EPOS4 Compact 50/5 EtherCAT) will be available by the end of 2018.
For more information about maxon‘s EPOS controllers visit epos.maxonmotor.com or contact maxon motor Australia tel. +61 2 9457 7477.