Research on position compensation and velocity estimation method of servo system based on limited precision encoder

Yu Liu; Wei Li; Fasheng Lei; Wei Chen

doi:10.1117/12.2640211

1 August 2022 Research on position compensation and velocity estimation method of servo system based on limited precision encoder

Yu Liu, Wei Li, Fasheng Lei, Wei Chen

Author Affiliations +

Proceedings Volume 12257, 4th International Conference on Information Science, Electrical, and Automation Engineering (ISEAE 2022); 122573R (2022) https://doi.org/10.1117/12.2640211
Event: 4th International Conference on Information Science, Electrical, and Automation Engineering (ISEAE 2022), 2022, Guangzhou, China

Abstract

Most of the servo systems use a three-loop nested control structure of position, speed and current, in which the closed loop of position and speed mainly depends on the position signal of the photoelectric encoder and the speed feedback based on it. This paper considers how to use the encoder with limited precision to improve the control performance of the system as much as possible under the premise of system stability, and also reduce the cost of the control system. Firstly, the encoder position feedback error is analyzed and compensated, and then two different speed estimation methods are used to obtain the speed feedback based on the compensated position signal. Finally, the performance of the proposed method and traditional estimation methods are compared on an actual commercial servo drive platform.

Citation Download Citation

Yu Liu, Wei Li, Fasheng Lei, and Wei Chen "Research on position compensation and velocity estimation method of servo system based on limited precision encoder", Proc. SPIE 12257, 4th International Conference on Information Science, Electrical, and Automation Engineering (ISEAE 2022), 122573R (1 August 2022); https://doi.org/10.1117/12.2640211

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