为了解决小型无人机对飞控计算机小型化和高精度要求的问题,设计以DSP为核心的主控模块,采用大规模逻辑器件CPLD进行地址译码,完成逻辑处理及隔离、驱动功能,配合接口芯片28C94和AD/DA转换芯片设计接口模块、数据采集模块及舵机驱动模块。基于模块化设计的机载飞控计算机具有体积小,功耗低,精度高的特点。系统集成试验和共计15h的验证飞行试验表明,该计算机处理数据的实时性满足5ms数据采集、20ms控制律解算的要求,其输出精度满足控制系统舵机驱动0.01V的要求,总体性能满足验证无人机系统的要求。 In order to solve the problem of miniaturization and high precision of flight control computer with small UAV, the main control module with DSP as the core is designed, and the large-scale logic device CPLD is used to address decoding to complete the logic processing and isolation, driving function and cooperation Interface chip 28C94 and AD / DA converter chip design interface module, data acquisition module and servo drive module. Based on the modular design of airborne flight control computer with small size, low power consumption, high precision. The system integration test and verification flight tests for a total of 15h show that the real-time performance of the computer processing data meets the requirements of 5ms data acquisition and 20ms control law solution, and the output precision meets the requirements of the control system servo drive 0.01V. The overall performance meets the requirements of verification UAV system requirements.