What are the main high requirements for servo motors in robots

What are the main high requirements for servo motors in robots

1. The servo motor is required to have fast responsiveness. The time from obtaining the command signal to completing the required working state of the motor should be short. The shorter the response time of the command signal, the higher the sensitivity of the electric servo system, and the better the fast response performance. Generally, the size of the electromechanical time constant of the servo motor is used to illustrate the fast response performance of the servo motor.

2. The starting torque inertia ratio of the servo motor is larger. In the case of driving a load, it is required that the servo motor of the robot has a high starting torque and a small moment of inertia.

3. Servo motors should have continuity and linearity in their control characteristics. As the control signal changes, the speed of the motor can continuously change, and sometimes it is necessary to have the speed proportional to or approximately proportional to the control signal.

In order to match the body shape of the robot, the servo motor needs to be small in size, small in mass, and short in axial size.

5. Can withstand harsh operating conditions, can perform very frequent forward and reverse, acceleration and deceleration operations, and can withstand several times the overload in a short period of time. AC servo drives are widely used in industrial robots due to their advantages such as high torque to moment of inertia ratio, brushless and commutation sparks.