Coreless motor: “compact” in body and “powerful” in performance, “crown pearl” in the field of motors

Dexterous hands are the final parts for humanoid robots to perform actions. They are very important and complex and require high motor performance. As a terminal tool for robot operation, the dexterous hand is very important. Its design is highly imitating the human hand and its structure is relatively complex. The biggest problem it faces is that the space is extremely small and the driving freedom is extremely high. It needs to be equipped with high power density, small size and high control accuracy. of motor. The coreless motor has high adaptability to dexterous hand joints, and Tesla Optimus chooses it as the power source. Coreless motors have the characteristics of high power density, high energy conversion efficiency, fast response, and smooth operation, and are highly adapted to the needs of dexterous hands. The Tesla robot's "Dexterous Hand" uses a more classic six-motor driving method. It uses 5 fingers like a human hand and has 11 degrees of freedom. The thumb uses dual motors to drive bending and side swinging, and the other four fingers are driven by one motor each. . The motor uses a worm drive mechanism for the same purpose as the leg linear servo, and uses mechanism self-locking to reduce energy consumption. In order to pursue beautiful appearance and adaptability, the fingers adopt a cable transmission mechanism, which has the ability to bear a load of 20 pounds (9KG) and adaptive grasping (can grasp objects of different shapes and sizes), and can complete actions such as carrying and watering flowers.