多旋翼无人机长续航供电闭环控制系统

Multi⁃rotor UAV closed⁃loop control system for long⁃endurance power supply

目前,小型无人机发动机恒速控制器依然依赖国外技术,且价格比较高昂。为了解决提升无人机性能、摆脱对国外依赖等问题,设计多旋翼无人机长续航供电闭环控制系统。该系统由油箱、发动机、传动轴、发电机、锂电池、整流模块、发电机控制模块以及测量模块组成。其中,控制模块包括舵机控制模块、转速控制模块以及基于STM32的微控制器;测量模块包括转速测量、温度测量、油量测量、电压测量。微控制器基于转速反馈控制算法有效地保证发电机转速恒定,从而保证电压恒定。实验结果表明,与国外的GY-701定速器/陀螺仪相比,该系统可控制的范围更大,且降低了装机成本的同时还可摆脱对国外技术的依赖。

At present,small UAV(unmanned aerial vehicle)engine constant speed controller still depends on foreign technology,and its price is relatively high.A multi⁃rotor UAV closed⁃loop control system is designed to improve the performance of UAV and get rid of dependence on foreign countries.The system is composed of fuel tank,engine,shaft,generator,lithium battery,rectifier module,generator control module and system measurement module.The control module includes servo control module,rotational speed control module and STM32⁃based microcontroller.The measurement module includes rotational speed measurement,temperature measurement,fuel quantity measurement and voltage measurement.Based on the speed feedback control algorithm,the microcontroller can effectively ensure the constant speed of generator and the constant voltage.The experimental results show that the system can control a larger range than the foreign GY⁃701 speed governor/gyroscope,which reduces the installed cost and gets rid of dependence on foreign technology simultaneously.