LIU Li-ping, LIU Xin-fu, GONG Yu-jie, GUO Huan
(School of Mechanical Engineering, Hebei University of Technology, Tianjin 300130, China)
Abstract： The hose pulse testing bench generally uses electro-hydraulic servo system. It occupies little space, tracks signals fast and has simple structure, and therefore it is widely used in industrial control field. However, there are lots of problems such as little accuracy and instability caused by slow response of hydraulic and various interference factors. Simple proportional integration derivatiation (PID) control method of traditional pulse bench is simple in principle, but it is difficult in parameter adjustment. According to the special requirements of the control system, a PID method based on fuzzy control is proposed in the paper. This method not only retains the advantages of the conventional control system, but also ameliorates the drawbacks of parameter uncertainty, instability and lag. It has been testified that the method is practicable and can improve the precision and adaptation.
Key words： fuzzy control; servo system; proportional integration derivatiation (PID); hose pulse
CLD number： TP273+.4Document code： A
Article ID： 1674-8042（2015）02-0161-08 doi： 10.3969/j.issn.1674-8042.2015.02.009
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基于LabVIEW的软管脉冲实验模糊PID控制系统研究
刘力平， 刘新福， 宫玉洁， 郭欢
（河北工业大学 机械工程学院， 天津 300130）
摘要:软管脉冲实验台一般使用电液伺服系统， 占用空间小， 原理结构简单， 信号跟踪能力强， 在工业控制领域应用广泛。 然而， 由于液压反应速度慢、 干扰因素多， 因而控制精度低， 系统不稳定； 而传统的液压脉冲实验台单纯PID的控制方式原理简单， 但参数调节困难。 本文针对控制系统的特殊要求， 提出了一种模糊PID控制方法， 既保留了原控制系统的优点， 又改善了原系统存在的参数时变、 不稳定、 滞后等缺点， 提高了系统的适应能力和精度。 经反复调试和试验， 结果表明， 该系统有效地解决了系统不稳定、 滞后严重和参数时变等问题。
关键词:模糊控制； 伺服； PID； 软管脉冲
引用格式：LIU Li-ping, LIU Xin-fu, GONG Yu-jie, et al. Fuzzy PID control system for hose pulse experiment based on LabVIEW. Journal of Measurement Science and Instrumentation, 2015, 6(2)： 161-168. ［doi： 10.3969／j.issn.1674-8042.2015.02.009］
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