摘要
仿真技术作为液压系统设计和分析的重要手段,越来越受到人们的重视。常见的液压系统仿真,都采用了线性近似模型,该模型用于系统稳定性分析和一般位置伺服系统时是合理的,但却无法反映电液振动台的实际特性。笔者引入阀流量非线性方程、阀增益非线性和摩擦非线性后的非线性建模仿真,仿真结果与实验结果相当吻合,准确再现了实际系统加速度波形失真情况,可以作为电液振动台系统设计和分析的有力工具。
The linear modeling and simulation has been applied successfully in the stability analysis and simple position servo system, but it＇s not able to reflect acceleration characteristics of the electro-hydraulic shaking table. A wonderful coherence between simulation result and experiment result was found, when the nonlinear modeling of valve flow, the nonlinear gain modeling of valve and the nonlinear modeling of friction was applied in the simulation. The hydraulic nonlinear modeling and simulation program is a powerful and useful tool in the research and design of electro-hydraulic shaking tables.
出处
《机床与液压》
北大核心
2008年第9期252-253,226,共3页
Machine Tool & Hydraulics
关键词
液压系统
电液振动台
非线性建模
Hydraulic system
Electro-hydraulic shaking table
Nonlinear modeling
