DC motors from maxon for smooth movement.
This walking robot has been modelled from a stick insect and is built with 18 brushless EC45 flat maxon motors. The DC motors produce a smooth stride and remarkable ability to adapt to uneven ground.
Pictured here is the robot called Hector (HExapod Cognitive auTonomously Operating Robot) built with 18 brushless EC45 flat maxon motors. The stand-out features are the flexible joints and lightweight frame weighing in at 12kgs. Within each leg is the maxon DC motor drive, all controlled simultaneously by algorithms and responsible for the robots smooth walking motion.
The robot was developed by the Biomechatronics research group within Bielefeld University (Germany), headed up by Prof. Dr. Axel Schneider. A unique aspect of the design is the assortment of incorporated sensors and specially designed DC motor drives that work together simultaneously to adapt to various terrains while on the move.
What was needed from the DC motors was a high torque performance from a lightweight and small unit. “The motors also had to be as short as possible, because the resulting length of the overall drive limits the legs’ range of motion, among other things. This is why we chose the EC 45 flat 50 W” said Jan Paskarbeit, from part of the team that created Hector. The research group plans to use Hector to explore further theories for controlling flexible motion-controlled robotic systems.
To see Hector in motion, please click here. For more information please contact +61 2 9457 7477.
Above: The brushless EC 45 flat motor drive delivers 50 W of power, at a diameter of 45 mm. The drive delivers high torque and needs very little installation space. © maxon motor.
Above: Drive unit with integrated electronics. Each leg of the walking robot Hector has three joints, so that the movements of 18 joints have to be controlled simultaneously. Each leg is powered by three of these elastic units with integrated electronics. © maxon motor.