固体火箭发动机磁悬浮试验架系统动态性能分析

Dymamic characteristics analysis of solid rocket motor magnetic suspension test fixture system

在磁悬浮系统数学模型的基础上,将磁悬浮试验架对发动机的悬浮支承等效为质量 弹簧 阻尼系统。计算了磁悬浮试验架的刚度、阻尼及固有频率,计算结果得到了试验的验证。表明除系统机械设计参数外,控制方式及控制器参数是影响系统动态特性的关键因素,并通过仿真说明了控制器参数对系统动态性能的影响。为设计适合发动机试验的磁悬浮系统提供参考。

Based on the mathematical model of magnetic suspension system,the suspension support was equivalent-treated to a mass-spring-damp system and the stiffness,damp and natural frequency of magnetic suspension system were calculated.The results were proved by tests.Calculation results indicate that control mode and controller parameters are the important factors except for the machine design parameters.The effects of controller parameters on dynamic characterisitcs of system were described by meams of computer simulation.The analysis provides a reference to the design of magnetic suspension system.