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

Claim 5:
6. A servo motor, including:
a motor, including a detecting means for detecting a rotation information of the motor;
an encoder coupled to the motor for generating a first signal and a second signal according to the rotation information; and
a driving circuit, including an error calibration block, coupled to the encoder, configured to calculate a gain error, an offset error and a phase error according to the first signal and the second signal; and 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,
wherein the encoder sequentially performs calibration on gain, offset, and phase of the first signal and the second signal according to the at least one gain parameter, the at least one offset calibration parameter, and the at least one phase calibration parameter,
wherein performs at least one gain calibration and one offset calibration are performed after a phase calibration is completed.