APPARATUS AND METHOD FOR COMPENSATING FOR POSITION ERROR OF RESOLVER

摘要

An apparatus and method are provided for compensating for a position error of a resolver that compensates for positions in the overall speed range using resolver position error measured at a specific speed by providing an angle tracking observer (ATO) for calculating angle information. The ATO compensates for the position errors in the overall speed range based on the position errors measured at the specific speed, to an inside of a resolver-digital converter. The method includes digitalizing detected position information of the motor rotor and receiving the digitalized position information from a resolver-digital converter to measure the position error. An electrical angular velocity of the position error is determined and the position error at the electrical angular velocity 0 is calculated and stored. The position error at a current electrical angular velocity is converted into and compensated for using the calculated position error based on the current electrical angular velocity.

主权项

1. An apparatus for compensating for a position error of a resolver, comprising:
a memory configured to store program instructions; and a processor configured to execute the program instructions, the program instructions when executed configured to:
digitalize position information of a motor rotor detected by a resolver;receive the digitalized position information to measure a position error;determine an electrical angular velocity of the position error;calculate and store a position error at the electrical angular velocity 0; andconvert into and compensate for a position error at a current electrical angular velocity using the stored position error based on the current electrical angular velocity.