液压调速器AMESim动态仿真与参数优化

AMESim Dynamic Simulation and Parameter Optimization for Hydraulic Governor

螺旋桨飞机飞行时,调速器对飞机的飞行稳定性与发动机安全性起着关键作用。分析液压调速器的设计结构及其工作原理;针对调速器、液压系统以及执行机构建立AMESim模型,进行动态特性仿真与分析;对调速器动态特性进行单因素影响分析,主要设计参数包括控制活门质量、配重质量以及弹簧刚度等,再通过多因素影响分析比较得到最优设计参数。对优化后的调速器模型进行动态仿真。研究结果表明:调速器参数优化后,调速振荡幅度和振荡次数显著减小,增加了调速器系统的稳定性,其性能得到了巨大提升,能够更好地满足发动机、螺旋桨的调速要求。

The governor plays a key role in the flight stability and engine safety of propeller aircraft.The design structure of hydraulic governor and its working principle were analyzed;AMESim models of governor,hydraulic system and actuator were established,and dynamic characteristics were simulated and analyzed;the single-factor influence analysis of governor dynamic characteristics was conducted,and the main design parameters included control valve mass,counterweight mass and spring stiffness,etc..Then the optimal design parameters were obtained through multi-factor influence analysis.The optimized governor model was verified by dynamic simulation.The results show that after the optimization of governor parameters,the oscillations amplitude of speed regulation and the oscillations number are significantly reduced,increasing the stability of the governor system,and its performance is greatly improved,which can better meet the requirements of engine and propeller speed regulation.