实时子结构试验中加载系统数值模型

Numerical model of loading system for real-time substructure testing

摘要:

为更好地揭示实时子结构试验中加载系统的动力特性,使系统数值模型能准确反映其实际工作状态,在Jung建立的电液伺服系统数值模型的基础上,对原传递函数模型做了3项修改,修改包括作动器传递函数的修正、流量增益和压差反馈增益的修正.修正后的模型与Simulink非线性模型得出的结果完全吻合.利用Simulink模型和传递函数模型进行实时子结构试验数值仿真,验证了修正后传递函数模型的准确性.

Abstract:

To reveal the actual working state of loading system in real-time substructure testing(RSTing),and based on the existing transfer function model of servo-hydraulic system developed by Jung,three modifications had been made,which included transfer function of actuator、servo-valve gain and pressure feedback gain.A new numerical model of servo-electric hydraulic system was set up and used to simulate the effects of the dynamics of the test system.The simulation results agree very well with those of simulink model,which verifies the correctness of the modifications to the existing transfer function model.