The motor is used to drive the joints of the robot. It is required to have a maximum power-to-mass ratio and torque-inertia ratio, high starting torque, low inertia, and a wide and smooth speed range. In particular, robot-like end effectors (claws) should use motors with as small a volume and mass as possible. Especially when fast response is required, the servo motor must have high reliability and a large short-term overload capacity.
Specific use requirements:
1. Fastness;
2. The starting torque inertia ratio is large.
The continuity and linearity of the control characteristics. With the change of the control signal, the speed of the motor can be continuously changed. Sometimes it is necessary that the speed is proportional to or approximately proportional to the control signal. Wide speed range, small size, small mass and short axial size. Can withstand harsh operating conditions, can carry out very frequent forward and reverse and acceleration and deceleration, and can withstand overload in a short time.
At present, AC and DC servo motors with high starting torque, large torque, and low inertia are widely used in industrial robots. Other motors, such as AC servo motors and stepper motors, will also be applied to industrial robots according to different application needs.