摘要
为了探究编码器测速对闭环控制系统的影响,更好的利用编码器提高测速和控制效果,首先说明了编码器测速原理,然后分析了差分速度估计法中编码器自身分辨率和采样周期对速度估计的影响,其后对闭环控制系统进行了分析,得出在速度带宽一定的情况下,编码器的采样频率变化对位置信号测量没有影响;而在满足系统带宽的情况下,编码器的采样频率越大,对速度测量造成的误差越大,最后用实验验证编码器采样频率变化对整个闭环控制系统的影响。
In order to explore the influence of the velocity measurement with encoder on the closed-loop control system, it is better to use the encoder to improve the speed and control effect. In this paper, the principle of encoder speed is first described. Then, the influence of encoder resolution and sampling period on velocity estimation is analyzed. Then the closed-loop control system is analyzed, the speed bandwidth under the change of encoder sampling frequency has no influ- ence on the position of signal measurement~ and to meet the system bandwidth conditions, the encoder sampling frequen- cy is larger, the error caused by velocity measurement is finally verified by experiment, the sampling frequency of the en- coder effect of the whole closed-loop control system.
作者
陈思思
黄宣琳
黄永梅
唐涛
Chen Sisi;Huang Xuanlin;Huang Yongmei;Tang Tao(Key Laboratory of Optical Engineering,Chinese Academy of Sciences, Chengdu 610209, China;Institute of Optics and Electronics,Chinese Academy of Science, Chengdu 610209, China;University of Chinese Academy of Sciences, Beijing 100049, China)
出处
《国外电子测量技术》
2017年第11期30-33,共4页
Foreign Electronic Measurement Technology
关键词
闭环控制
编码器
速度测量
采样频率
closed-loop control
encoder
velocity measurement
sampling frequency
