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介绍了直升机飞行操纵系统典型液压助力器的组成和工作原理,对助力器静动态性能分析方法进行了研究。综合考虑不可忽视液压刚度、结构刚度、摩擦、泄漏等非线性因素对系统的影响,建立了基于AMESim的助力器模型。利用该模型对直升机飞行操纵系统样例液压助力器进行仿真分析,将仿真结果和试验结果进行验证对比,结果表明仿真数据和试验数据基本吻合,较好地反映了实际系统的性能。因此仿真结果可以为直升机飞行操纵系统液压助力器打样设计和结构优化提供理论分析依据。
The composition and working principle of a typical hydraulic booster for helicopter flight control system are introduced. The static and dynamic performance analysis of booster is studied. Considering synthetically, the influence of nonlinear factors such as hydraulic rigidity, structural rigidity, friction and leakage on the system can not be neglected, and a booster model based on AMESim is established. The model is used to simulate and analyze the hydraulic booster of a helicopter flight control system sample. The simulation results and the test results are compared and verified. The results show that the simulation data and the experimental data are in good agreement with each other, and the performance of the actual system is well reflected. Therefore, the simulation results can provide theoretic basis for proof design and structural optimization of hydraulic booster for helicopter flight control system.