Accurate cogging and linear ripple models for parametrized Feed Forward

摘要

In Iron Core Motors, there are two types of ripple - i.e. position dependent, current dependent parasitic forces. One is only marginally dependent on current (the detent force) and the other is linear with current. Clearly, for formulating accurate detent force models for the purpose of successfully utilizing parametrized Feed Forward techniques it will be crucial to independently determine both fractions of the total ripple. A technique is presented which accomplishes this, both in simulation and in measurement. The potential benefit for a parametrized Feed Forward system is illustrated.