水壓機(jī)主缸油壓PID閉環(huán)控制

PID Closed-loop Control of Master Cylinder Oil Pressure of Hydrostatic Testing Machine

摘要: 分析了水壓機(jī)主缸油壓PID閉環(huán)控制的可行性，從水壓機(jī)工作流程、電氣控制原理、硬件組態(tài)及控制程序等方面介紹了水壓機(jī)油水平衡系統(tǒng)主缸油壓PID閉環(huán)控制的改造過程。通過水壓機(jī)主缸油壓PID閉環(huán)控制改造，提高了主缸油壓系統(tǒng)的控制精度和對(duì)水壓的跟隨響應(yīng)速度，使密封圈的使用壽命提高了3耀4倍，保證了設(shè)備的穩(wěn)定正常運(yùn)行。

Abstract: Discussed is the feasibility for applying the PID close-loop control to the master cylinder oil pressure of the hydrostatic testing machine. Also elaborated are details of the modification of the master cylinder oil pressure of the testing machine’ s oil-water balance system with the PID close-loop control，involving such aspects as the testing machine’ s work flow，electrical control principle，hardware configuration and control process program，etc. Thanks to the modification， both the control accuracy and the water pressure-following response speed of the master cylinder’ s oil pressure system are enhanced so as to get the sealing ring’ s service life 3~4 times longer than before， and thus ensure the consistent operation of the testing machine.