The robot's requirements for the joint drive motor - Kawasaki Robot

Create Date: 2024-8-30 12:03:23|Source: Kawasaki/Kawasaki

1. Rapidity

The time from obtaining the command signal to the operation condition required by the motor to complete the command should be short. The shorter the time to respond to the command signal, the higher the sensitivity of the electric servo system, and the better the fast response performance.

2. The ratio of starting torque to inertia is large

In the case of driving load, the starting torque of the servo motor of the robot is required to be large and the moment of inertia is small.

                            The robot's requirements for the joint drive motor - Kawasaki Robot

3. The continuity and linearity of the control characteristics, with the change of the control signal, the speed of the motor can change continuously, and sometimes the speed needs to be proportional or approximately proportional to the control signal.

4. Wide scale of speed regulation.

It can be used for the speed regulation scale of 1:1000-10000.

5. Small size, small mass and short axial size.

6. It can withstand the harsh operating conditions, can carry out very frequent forward and reverse and acceleration and deceleration operations, and can accept overload in a short time.

At present, because AC and DC servo motors with high starting torque, large torque and low inertia are widely used in industrial robots, most of the industrial robots with a general load of 1000N (equivalent to 100kgf) adopt an electric servo drive system. The joint drive motors used are mainly AC servo motors, stepper motors and DC servo motors. In the meantime, AC servo motors, DC servo motors, and direct drive motors (DD) all adopt azimuth closed-loop control, which are generally used in high-precision and high-speed robot drive systems. The stepper motor drive system is mostly suitable for small simple robot open-loop systems that do not require high precision and speed. AC servo motors have been widely used in flammable and explosive environments because of their electronic commutation and no commutation sparks. The power scale of the robot joint drive motor is generally 0.1-10kW. An electric motor used in the drive system of an industrial robot.

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