US 2023/0205165 A1 · SERVO MOTOR AND ENCODER CALIBRATION METHOD THEREOF

Abstract

The present disclosure discloses a servo motor and an encoder calibration method. The encoder calibration method includes: calculating a gain error, an offset error and a phase error, by an error calculation 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, by the error calibration block, according to the gain error, the offset error and the phase error; and calibrating sequentially, by the encoder, the gain, the offset and the phase of the first signal and the second signal according to the at least one gain calibration parameter, the at least one offset calibration parameter and the at least one phase calibration parameter, wherein performing at least one gain calibration and offset calibration after the phase calibration is completed.

Claims10

Dependent claims

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.

2 more elements

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.

4 more elements

Dependencies are inferred from the claim text.

Servo motor and encoder calibration method thereof

Life of this patent

Servo motor and encoder calibration method thereof

Life of this patent

Abstract

Claims10