液压收卷机构的自动控制研究  

Research on automatic control system of rolling hose mechanism

作　　者：皮嘉立 张世富[2] 谢昌华[2] 

机构地区：[1]后勤工程学院军事供油工程系,重庆401311 [2]后勤工程学院国家应急救灾装备工程技术中心,重庆401311

出　　处：《电子设计工程》2016年第8期86-90,共5页Electronic Design Engineering

基　　金：国家科技支撑计划(2014BAK05B00);重庆市科委项目(cstc2014-jcsf40001-03)

摘　　要：针对液压驱动的软管收卷机构建立了机电液自动控制系统模型,为了实现软管收卷速度与装载液压收卷机构作业车到的车速的随动控制,根据自动控制模型的参数设计了超前校正、滞后校正、超前滞后校正3种校正网络。以阶跃信号作为系统输入信号模拟车速突变的情况,对3种校正网络进行仿真分析计算,仿真结果表明在保证系统跟随误差的情况下,超前校正能缩短瞬态响应的调整时间,却形成了比较大的响应超调量,超前-滞后校正网络虽然得到了平滑的瞬态响应曲线,但却降低了信号跟随的精确性。相比之下,滞后校正网络的瞬态与稳态综合性能比前两者更优,更宜采用滞后校正的控制系统。Automatic control model is built for hydraulically powered rolling hose mechanism. In order to realize follow-up control for the hose rolling speed and the vehicle speed, there are three kind of correction networks designed according to the parameters of the automatic control model parameters. These three correction networks are simulated by the means of step inputs to simulate the case of vehicle speed change. The simulation results show that, in condition of small system tracking error, lead correction can shorten the response time, but form a relatively large response overshoot, lead and lag correction network forms a smooth transient response curve, but reduce the signal follow-up accuracy. By contrast, the transient and steady state performances of the lag correction network are better than the previous two networks. As the result, lag correction network is most suitable for the control system.

关 键 词：机电液控制系统 校正网络 稳态精度 瞬态性能 

分 类 号：TH-39[机械工程]