Abstract:

In view of the shortcomings on synchro-motion of slide carriage in hydraulic broaching machine driven by single cylinder, an electro-hydraulic servo system with dual cylinder was designed and its nonlinear model was presented based on the analysis of slide carriage motion chracteristics. Then the algorithm of
 IPSO was introduced, and a IPSO-PID synchro controller similar to classical PID controller structure for electro-hydraulic servo system with dual cylinder was provided on the basis of tracking and synchronization performance. The simulation and factual application in hydraulic broaching machine show that the proposed controller has better tracking and synchronization performance than conventional PID controller has and can solve the problem of dual cylinder hydraulic broaching machine synchronous driving problem better.

Key words: improved partical swarm optimization(IPSO);improved partical swarm optimization(IPSO)-PID synchro control, broaching machine with dual cylinder, electro-hydraulic servo control

摘要：

针对单缸驱动液压拉床存在刀架溜板同步性能较低的问题,设计了双缸电液伺服同步驱动系统,在分析刀架溜板拉削运动特性的基础上建立了系统的非线性模型;根据系统跟踪性能和同步性能指标要求,引入改进型粒子群优化算法（IPSO）,提出了类似经典PID控制器结构的IPSO-PID伺服同步控制策略。在液压拉床上的实际应用结果表明,该控制策略比常规PID同步控制策略具有更好的跟踪性能和同步驱动性能,可以较好地解决双缸液压拉床的同步驱动问题。

关键词: 改进型粒子群优化算法(IPSO), IPSO-PID同步控制, 双缸液压拉床, 电液伺服控制