Does the load inertia match the motor inertia? Two tips for permanent magnet motor manufacturers

Inertia is a modern word, which refers to the physical quantity that measures its inertia by the mass of matter. Its size is corresponding to the mass of matter. We all know that the matching of load inertia motor inertia, in addition to affecting the power transmission of the system, is a very important factor in many factors that cause system instability, even uncontrollable. Today, permanent magnet motor manufacturers will teach you how to solve the problem of load inertia motor inertia mismatch.

1. The method of increasing the inertia on the motor shaft adopting a suitable speed change mechanism can be adopted to reduce the mismatch between the load inertia the motor inertia to a small extent.

2. Improve the rigidity of mechanical system.

Of course, in addition to the above methods, this problem can also be solved through the selection of motor:

1. high inertia motor

In the case that the scheme of low inertia motor can be realized, sometimes it is better to adopt the large inertia motor with flywheel on the shaft with the same torque level, which can provide a reasonable compromise between the higher dynamic performance stability of the servo drive system.

2. low inertia motor

Selecting the low inertia motor will help to reduce the total system inertia, so that the system can obtain higher acceleration larger frequency band width; while the acceleration performance is larger, the mismatch between the load inertia the motor inertia can be smaller by using the variable speed mechanism. However, in order to match the load inertia with the motor inertia, the cost of adopting a better speed ratio scheme is higher, sometimes it is necessarily achieved.