较大密闭容腔的高精度水压控制  

High precision pressure control in large closed water volume

作　　者：聂勇[1] 王庆丰[1] 唐建中[1] 

机构地区：[1]浙江大学流体传动及控制国家重点实验室,浙江杭州310027

出　　处：《浙江大学学报（工学版）》2011年第10期1821-1826,共6页Journal of Zhejiang University：Engineering Science

基　　金：国家自然科学基金资助项目(50875233);国家"863"高技术研究发展计划资助项目(2009AA044402)

摘　　要：为了精确模拟水下特种设备工作环境中外部水压的动态变化过程,检验密封装置的密封性能,提出一种基于电液力控制的水压控制方法.设计并建立包含压力传递装置、电液力控制系统等部分的较大密闭容腔水压控制系统.通过分析系统的数学模型,提出"Fuzzy+PID"复合控制策略进行水压控制.在建立的实验系统上进行实验研究.实验结果表明,水压可控范围为0.1～10MPa,稳态误差为±0.04MPa,压力无失真斜坡跟踪最大速率可达±2MPa/s.A water order to simulate t pressure control method was proposed based on electro-hydraulic pressure control in he dynamic water pressure of the special equipment worked and test the performance of sealing device. A large closed volume water pressure control system, including the pressure transfer device and electro-hydraulic pressure control system, was designed. A ＂Fuzzy＋PID＂ compound control strategy was proposed by analyzing the model of the water pressure control system. Experimental results show that the control range of the pressure is from 0.1 MPa to 10 MPa, the steady-state error is ±0.04 MPa, and the maximum slope trail is ±2 MPa/s.

关 键 词：水压控制 电液力控制 压力传递装置 Fuzzy+PID复合控制 

分 类 号：TH137[机械工程—机械制造及自动化]