基于CAN总线起落架加载试验系统的设计与实现

Design and Realization of Electro-hydraulic Load Trial System of Landing Gear Based on CAN bus

针对某无人机起落架电液加载试验中参数实时测量以及系统分散控制的特点,设计了一种基于CAN总线的某无人机起落架加载试验系统;对加载系统建立了数学模型,对多余力的构成进行了分析,应用结构不变性原理设计了补偿消扰器,将起落架系统的主动运动对加载系统构成的位置扰动输入进行了前馈补偿,从而消除加载过程中的多余力;针对加载实验对象多通道同步进行的要求,设计CAN总线系统进行实验加载过程的控制;结果成功应用于某无人机起落架系统实际的加载试验系统中,实现了系统的要求。

A design of landing gear electro-hydraulic load trial based on CAN bus is described in order to measure the real-time parameters and to control the whole distributed system. The design builds and analyzes math model of the electro-hydraulic loading system and reduce the extra force via structure invariance theory. The design was applied in the actual trial system successfully. The application has met the system＇ s demand.