直升机飞行操纵系统动刚度特性研究

The Characteristic Research of Dynamic Stiffness on Helicopter Flight Control System

对直升机操纵系统一个重要参数──动刚度特性进行了研究。在分析直升机操纵系统结构的基础上,建立了直升机操纵系统的力学模型和数学模型,并推导出直升机操纵系统动刚度的计算公式。用机械阻抗法对某型直升机操纵系统动刚度进行了分析计算。对某型机计算结果与试验结果进行了对比。计算结果与试验结果符合性较好,说明力学模型正确、计算方法可行。

This paper described an important character of helicopter control system:the characteristic of dynamic stiffness.The structures of helicopter control system were analyzed,and the mechanics model and mathematics model were set up.The formula of dynamic stiffness was deduced.Mechanical impedance method was applied to calculate dynamic stiffness on some type helicopter control system.The test data were compared with the calculation one,which demonstrated the exactness of the mechanics model and the effectiveness of the methods for calculating dynamic stiffness.