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航空工业部第634研究所研制的飞机多通道疲劳协调加载试验系统最近已通过所内验收,并已正式向用户进行现场移交。该系统是在参考美国MTS 公司100通道全机疲劳协调加载系统的基础上而自行设计的。它由微型电子计算机、电子控制器和多功能电液伺服作动器组成。电液伺服作动器是用于对被试工件施加载荷的执行机构,它由电液伺服阀将接收的电信号转换成液压能,通过伺服油缸输出动力载荷,作用在被试工件上。并由拉压力载荷传感器、位移传感器将输出转换成电信号反馈到电子伺服控制器,构成闭环控制回路。在该系统中可由多个这种闭环控制的通道组成,同时对工件施加疲劳载荷。本系统可以扩展到16个通道,最大工作频率可达到80Hz。每个通道都由电子计算机负责进行协调加载,并且同时控
Aircraft Multi-Channel Fatigue Coordinated Loading Test System developed by No. 634 Institute of the Ministry of Aeronautical Industry recently passed the acceptance test and has been formally handed over to users. The system is designed on the basis of reference to the American MTS 100-channel full-machine fatigue coordination loading system. It consists of micro-computer, electronic controller and multi-function electro-hydraulic servo actuator components. Electro-hydraulic servo actuator is used to exert load on the workpiece to be tested, which is electro-hydraulic servo valve will receive the electrical signal into hydraulic energy, the servo cylinder output dynamic load, the role of the workpiece on the test. And by the pull pressure load sensor, the displacement sensor converts the output into electrical signal feedback to the electronic servo controller, constitute a closed-loop control loop. In this system, it is possible to consist of several such closed-loop controlled channels, at the same time exerting a fatigue load on the workpiece. The system can be extended to 16 channels, the maximum operating frequency up to 80Hz. Each channel by the computer responsible for coordinating loading, and at the same time control