电气传动2024，Vol.54Issue(1)：15-19,5.DOI:10.19457/j.1001-2095.dqcd24531
开关噪声对电流控制精度影响及抑制策略
Influence of Switching Noise on the Current Control Precision and Suppression Methods
经琦 1王长恺 1许凤霞 1于力奇2
作者信息
- 1. 广东省高性能伺服系统企业重点实验室,广东珠海 519000||珠海格力电器股份有限公司,广东珠海 519000
- 2. 珠海格力电器股份有限公司,广东珠海 519000
- 折叠
摘要
Abstract
In high-precision applications,the control accuracy of the servo system is extremely high required.The control precision of the servo system depends largely on the precision of the feedback measurement.Position and speed feedback accuracy can be improved by increasing the absolute accuracy of the encoder,and it is not sensitive to external interference,while the current sampling link is more sensitive to switching noise,which will cause torque fluctuation and reduce the control precision of the servo system.Based on the principle of high-precision current sampling in servo system,the influence of switching noise on current control accuracy was studied.An SINC3 filter structure with continuous output and a method to improve the steady-state current control accuracy were proposed.The experimental results show that the method has obvious effect on restraining the current fluctuation caused by switching noise,and has strong engineering guiding significance.关键词
电流采样/控制精度/开关噪声/转矩修正Key words
current sampling/control precision/switching noise/torque correction分类
信息技术与安全科学引用本文复制引用
经琦,王长恺,许凤霞,于力奇..开关噪声对电流控制精度影响及抑制策略[J].电气传动,2024,54(1):15-19,5.
