直升机大球铰摆动和滑动磨损试验机测控系统设计

直升机大球铰摆动、滑动磨损试验机可以真实地模拟大球铰在直升机上的运转和受载荷状态.试验机测控系统主要解决运动模式和力加载的协调运动,设计关键算法解决了任意更换滑动行程、滑动频率和摆动角、摆动频率的4个参数对运动曲线的拟合问题,生成3个缸的位置时域序列,解决了任意方向力加载的难点,模拟大球铰受力情况,实现了大球铰在不同飞行状态下运动和受载荷的自动运行.通过合理的硬件设计和软件开发,其自动化程序高、界面友好、运行稳定,为直升机大球铰疲劳磨损试验数据的准确性和可靠性提供了保证.

Design of Control System for Swing and Sliding Wear Tester of Helicopter Ball Joint

Swing and sliding wear tester of a helicopter ball joint can realistically simulate the moving and load status on the rotorcraft.The tester control system mainly solves the movement mode and the force load coordination movement.The key algorithm was designed to solve the problem of fitting the motion curve with four parameters of changing the sliding stroke,sliding frequency swing angle and swing frequeny arbitrarily.The position of the triplex temporal sequence was created.The difficulty of force loading in any direction was solved,and the force situation of ball joint was simulated,so that the moving and load status of ball joint between regime of fight can be run automatically.Through reasonable hardware design and software development,the designed system has high automation,good integrality,friendly interface and stable operation,which can guarantee the accuracy and reliability of the fatigue test data for the helicopter ball joint.