摘要
对于很多弱刚度负载系统,为保持其安全运行必须采用适当的安全控制元件,而安全控制元件的加入将改变原有电液控制系统的性能。本文就该问题以登高平台车电液控制系统为例,分析了平衡阀对阀控缸系统产生的性能变化,并推导出了这个过程的控制框图。通过控制框图分析,我们整合了一种安全控制方案,并在试验中获得了良好的效果。
In some weak rigidity load electro-hydraulic system,we often use safety control components to make the system stable operate.But,the safety control components will change the electro-hydraulic system performance.As an example,this paper will do some research on the problem in Aerial Work Platform electro-hydraulic system.Because of the counter-balance valve,the dynamic characteristics changes of cylinder controlled by servo valve will be analyzed.The control block diagram will be derived.Based on the control block diagram analysis,a new security control program will be used in the electro-hydraulic system,and the system will operate very well.
出处
《液压气动与密封》
2011年第3期48-52,共5页
Hydraulics Pneumatics & Seals
关键词
电液系统
伺服控制
平衡阀
闭环控制
electro-hydraulic system
servo control
counter-balance valve
closed-loop control
