Patent ID: 11934171
Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
Field: Measurement (Instruments)
Classification: CPC G | IPC G  H

Claim 0:
1. An encoder calibration method for servo motors, including:
calculating a gain error, an offset error and a phase error, by an error calibration block, according to a first signal and a second signal output by an encoder;
calculating at least one gain calibration parameter, at least one offset calibration parameter, and at least one phase calibration parameter according to the gain error, the offset error, and the phase error by the error calibration block; and
performing calibration sequentially, by the encoder, on gain, offset and phase of the first signal and the second signal according to at least one gain parameter, the at least one offset calibration parameter, and at least one phase calibration parameter,
wherein performing at least one gain calibration and one offset calibration are performed after a phase calibration is completed.