How to solve the problem that the load inertia does not match the motor inertia
For a servo drive system, the higher the gain, the more sensitive the system is and the faster the response to the command; however, too high a gain will result in system instability. By adjusting the servo amplifier to adjust the gain of the system, when the system has a critical damping of less than 5% overshoot and phase shift not exceeding 90°, the system can achieve a good compromise between maximum response and minimum instability. Time is minimal. MS. Participate in the discussion of the matching problem between the load inertia and the motor inertia of the brushless DC permanent magnet motor.
How to eliminate invalid motion and compliance
In the case of stable system, if the inertia of the drive mechanism is increased, the system will have low frequency instability; if the inertia of the drive mechanism is reduced, high frequency instability will occur. Therefore, the system inertia, especially the matching of the load inertia and the motor inertia, in addition to affecting the power transmission of the system, is one of the most important factors that cause the system to be unstable or even uncontrollable.
In general, the load inertia is not easy to change. In order to eliminate the ineffective motion and the compliance displacement between the load inertia and the motor inertia, the following measures can be taken:
1) First, use a suitable shifting mechanism to minimize the mismatch between load inertia and motor inertia.
2) The second is to increase the stiffness of the mechanical system.
3) In the case where the above measures are invalid, the method of increasing the inertia on the motor shaft can be adopted to minimize the mismatch between the load inertia and the motor inertia.
