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传统标定系统一般只能应用于近距离或远程异步的数据采集,而小型无人机飞行时需要对发动机进行实时监测和控制,才能使发动机达到最好的工作状态。因此文中改进了传统标定方式的有线连接方式,在串行通信方式的基础上添加了无线通信模块,修改了传统标定系统的上下位机程序,设计出用于飞行试验的无线发动机标定系统。经过多次飞行试验结果表明:该系统实现了对发动机的工作状态信息实时监测和在线标定,完成了电子控制单元中各种校正MAP数据的确定。文中建立的无线发动机标定系统方案,可推广应用于其他数据传输系统中。
The traditional calibration system generally can only be applied to short-range or remote asynchronous data acquisition, while the small UAV flight requires real-time monitoring and control of the engine to make the engine to achieve the best working condition. Therefore, the paper improved the wired connection method of traditional calibration method, added the wireless communication module based on the serial communication method, modified the upper and lower computer program of the traditional calibration system and designed the wireless engine calibration system for flight test. After many flight tests, the results show that the system realizes the real-time monitoring and on-line calibration of the working state information of the engine, and completes the determination of various corrected MAP data in the electronic control unit. The wireless engine calibration system established in this paper can be widely used in other data transmission systems.