阀控缸系统固有频率和阻尼比的正确求法  

The Acquisition of Natural Frequency & Damping Ratio of the Valve-controlled Cylinder System

作　　者：李建蓉[1] LI Jian-rong(School of Mechano- electric Engineering,Suzhou Vocational University,Suzhou 215104,China)

机构地区：[1]苏州市职业大学机电工程学院,江苏苏州215104

出　　处：《苏州市职业大学学报》2016年第3期38-42,共5页Journal of Suzhou Vocational University

摘　　要：在液压伺服控制系统中,对于阀控缸系统,在求压力对时间的变化率时容易出现不易察觉的错误,导致所求出的系统的固有频率和阻尼比也是错误的,这将直接影响对系统进行正确的动态分析.通过对产生这种错误的原因分析,给出阀控缸系统固有频率和阻尼比的正确求法,以提高液压控制系统设计及系统故障分析诊断的准确性.As for the valve-controlled cylinder system within hydraulic servo control system, the wrong derivative of pressure with respect to time results in wrong hydraulic natural frequency and damping ratio of the system, which influences dynamic analysis of the system. The paper analyzes the cause of and presents a correct solution to the acquisition of the natural frequency and damping ratio to improve the accuracy of hydraulic control system design and fault diagnosis.

关 键 词：阀控缸 固有频率 阻尼比 压力对时间的变化率 

分 类 号：TH137[机械工程—机械制造及自动化]