基于滑模控制的活塞式压力模拟装置位置伺服系统设计

摘要

In order to help piston-type pressure simulator 's positioning servo system solve the problem of controllable speed , smooth motion of location approach phase , Sliding Mode Control ( SMC) is chosen to design the positioning servo system of permanent magnet synchronous motor ( PMSM) .A simplified approach was pproposed to design a SMC by analyzing the thoughts and methods of integrated design of position and speed control during existing variable structure servo systems .This approach could achieve speed con-trol and positioning only by switching states of the sliding surface , with characteristics of easy to come true and simple structure .Simu-lation result verified the correctness of this approach .At last, experimental results show effectiveness and feasibility of design of SMC positioning servo system by pressure simulation experiment in the platform .%为解决活塞式压力模拟装置位置伺服系统速度可控、 位置接近段运动平稳的问题,选用滑模变结构控制设计永磁同步电机位置伺服系统.分析现有变结构伺服系统中位置速度一体化控制设计的思想和方法,提出一种简化的滑模控制器设计方法,该方法通过滑模面状态量的简单切换,就可以实现速度控制和位置定位,具有结构简单、 实现方便的特点.仿真结果验证了该滑模控制器设计方法的正确性,最后通过实验平台进行压力模拟实验,实验结果表明该滑模控制的位置伺服系统设计可行有效.