液压伺服激振系统“阀-缸”一体化建模与控制策略设计  

Valve-cylinder Integrated Modeling and Control Strategy Design for Hydraulic Servo Vibration System

作　　者：张舟钧禹 陈哲吾 戴巨川[1] 胥小强 郭勇[1] ZHANGZHOU Junyu;CHEN Zhewu;DAI Juchuan;XU Xiaoqiang;GUO Yong(College of Mechanical and Electrical Engineering,Hunan University of Science and Technology,Xiangtan 411201,China;Suzhou Dongling Vibration Test Instrument Co.,Ltd.,Suzhou 215000,China)

机构地区：[1]湖南科技大学机电工程学院,湖南湘潭411201 [2]苏州东菱振动试验仪器有限公司,江苏苏州215000

出　　处：《机械工程师》2022年第1期34-38,41,共6页Mechanical Engineer

基　　金：国防基础科研计划项目。

摘　　要：为了获得液压伺服激振系统更准确的系统模型和控制性能,开展了"阀-缸"一体化模型与控制特性研究。首先,根据伺服阀基本原理,从衔铁射流管组件运动方程出发,建立了伺服阀输入信号至阀芯位移的传递函数模型,进而将伺服阀模型与液压缸模型结合,得到"阀-缸"一体化模型。在此基础上,设计了一种由三状态反馈与四状态前馈相结合的混合控制模型,并基于模糊理论完成了控制参数的修正。然后,对系统性能进行了数值仿真分析研究。结果表明:设计的混合控制模型能够实现液压伺服激振系统的有效控制,控制参数修正后能够较大程度上改善控制效果。In order to obtain a more accurate system model and control performance of the hydraulic servo vibration system, this paper carries out the research on the valve-cylinder integrated model and control characteristics. According to the basic principle of the servo valve and the motion equation of the armature jet tube assembly, the transfer function model of the servo valve input signal to the spool displacement is established, and then the servo valve model and the hydraulic cylinder model are combined to obtain a valve-cylinder integrated model. On this basis, a hybrid control model combining three-state feedback and four-state feedforward is designed, and the control parameters are modified based on fuzzy theory. Then, the system performance is analyzed by numerical simulation. The results show that the designed hybrid control model can realize the effective control of the hydraulic servo excitation system, and the control effect can be improved to a large extent after the control parameters are modified.

关 键 词：液压伺服 激振系统 混合控制 控制策略 

分 类 号：TH122[机械工程—机械设计及理论] TG502.32[金属学及工艺—金属切削加工及机床]