液压机多缸同步系统的建模与解耦控制

Giant hydraulic press of active sync system modeling and control

针对巨型液压机多缸驱动系统存在的高精度同步运行控制问题,分析作用在活动横梁上各种力矩的变化规律及相互影响,建立以活动横梁为中心的多变量耦合系统模型;并设计了一种基于极点配置的动态解耦控制器,使强耦合系统简化为两个简单的单回路系统,此法大大地简化了复杂控制器的设计,在各单回路加经典PID控制器,通过仿真和实验表明,该控制策略可以有效实现对多缸运动系统的同步控制。对复杂多回路耦合系统的控制具有重要的参考价值。

Being problems of the high-precision control of synchronous operation in Giant forging hydraulic press,as the center activities beam of the mathematical model was established.Designing the dynamic decoupling controller bases on pole placement to make the strong coupling the system reduce to two simple single-loop system.It greatly simplifies the complex controller design.Simulation and experiment shows that the control strategy can effectively realize the synchronization control of multi-cylinder motor system.