相平面法在电液位置同步控制系统中的应用  

Application of Phase Plane Method in Electro-hydraulic Position Synchronic Control System

作　　者：刘乔[1] 易孟林[1] 吴新跃[2] 

机构地区：[1]华中科技大学,武汉430074 [2]海军工程大学,武汉430033

出　　处：《中国机械工程》2006年第21期2212-2215,共4页China Mechanical Engineering

摘　　要：针对存在非线性和不确定性的电液伺服系统位置同步问题,应用相平面法,对电液同步系统的相平面响应轨迹特性进行分析,提出了相对变化角的概念。在分析相对变化角特性的基础上,设计了一种基于相对变化角的Fuzzy-PID复合调节器。仿真结果表明,该方法可有效减小同步误差,提高系统的收敛速度。Aiming at the synchronic control of electro--hydraulic position servo systems with uncertainties and nonlinearities, this paper analyzed the relationship between the two subsystems＇ responding trajectories of synchronic system on phase plane, and put forward the concept of relatively variety angle that was an important factor influencing synchronic errors. A fuzzy controller based on relatively variety angle was designed and used to improve the system＇s classical adjuster. The simulation results show that the method is capable of reducing the synchronic errors, improving the convergence speed of the synchronic system.

关 键 词：电液位置同步控制 相平面 相对变化角 模糊控制 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置] TH137.9[自动化与计算机技术—控制科学与工程]