双缸电液位置伺服同步控制系统的智能控制

摘要

针对双缸电液位置伺服同步控制系统的高精度及快速性要求,采用比例积分微分型迭代学习控制算法,设计实现了电液位置同步控制系统.在系统中采用双闭环两级控制策略,将双缸同步误差反馈补偿到输出量中,同时采用比例微分算法对数字控制量进行修正,使双缸互为跟踪对象,保证了双缸运行中的高精度同步.试验结果表明:该同步控制系统具有较高的控制精度和快速跟踪目标能力,同步控制精度达到了0.2％,为电液同步控制提供了一种新的有效思路和方法,因此具有重要的工程应用价值.%Aiming at the requirements of the high precision and fast response in electro-hydraulic position servo synchronic control system with double cylinders, proportional-integration-differential iterative learning control strategy was employed to design and implement the control system where two-closed-loop and two-level control were adopted to make the two electro-hydraulic position servo systems track each other and ensure the dynamic synchronization of the double cylinders. The position error between two cylinders into system output signal was fed back while the digital control signal was adjusted by proportional-differential algorithm. The experiments show that the system is endowed with high control accuracy, rapid tracking ability and the precision of synchronization control approaches to 0. 2%.