摘要
在液压传动系统中,同步控制要求非常普遍,但大流量、高精度、多执行器同步,一直是一个较难解决的问题。由于液压系统的液体压缩、泄漏、阻尼等特点,尤其是在外载力较大和外载力不断变化及设备本身的不平衡与设备运动行程较大的因素下,实现多个液压缸较高的同步精度有很大难度。文中介绍了采用模糊控制和PID控制相结合的方法,对万吨液压机的五缸同步控制系统进行了设计,经实验证明,该控制方法对该液压机的五缸同步控制是成功的。
It is very common to go on synchronization control in the system of hydraulic transmission. But it has been a more difficult problem to deal with large flowrate、high accuracy and multi-actuator synchronization. It is very difficult to realize the higher synchronization accuracy of multi-hydraulic cylinder because of its characteristics of hydraulic system、and especially because of the equipmentˊs features of larger and changeable external applied force and its unbalance、larger stroke-length. A fuzzy control method combined with PID control strategy is proposed in the paper. The research focuses on the 5 hydraulic-cylinder of a 10000-ton hydraulic press control system . Experiment results prove that the employed control method succeeds in controlling the 5 hydraulic-cylinder of a 10000-ton hydraulic press.
出处
《组合机床与自动化加工技术》
2005年第7期76-78,81,共4页
Modular Machine Tool & Automatic Manufacturing Technique
关键词
模糊控制
同步控制
PID
fuzzy control
synchronization control
PID
