液压弹簧疲劳试验台设计仿真及性能分析

Design,simulation and performance analysis of hydraulic spring fatigue test rig

设计了一种基于位置控制的液压伺服弹簧疲劳试验台,运用AMEsim软件建立了液压控制系统。简述了弹簧疲劳试验台各元器件的选型,液压伺服弹簧疲劳试验台的传递函数及方框图。根据现代控制理论,得到弹簧疲劳试验台的控制系统原理图、方块图、控制系统结构图、模拟结构图等,建立液压伺服弹簧疲劳试验台的控制系统的状态空间表达式、,并求解状态空间表达式,再运用现代控制理论对控制系统的可控性、可观性及李雅普诺夫稳定性等进行控制系统的性能分析,并得出弹簧疲劳试验台性能分析结果。

a hydraulic servo spring fatigue test rig based on position control is designed, and the hydraulic control system is established by using AMEsim software. The selection of the components of the spring fatigue test bench, the transfer function and the block diagram of the hydraulic servo spring fatigue test rig are described. Based on the modern control theory,control system principle diagram, block diagram, control system structure diagram, spring fatigue test bench simulation structure diagram, state space expression, establish the control system of the hydraulic servo fatigue test bench,and solving the state space expressions,and then analyzed the performance of the control system of control and control system the observability and Lyapunov stability,and the analysis results of spring fatigue test per- formance.