摘要
油动多旋翼无人机用汽油机在高海拔环境下易油气失配使得燃料燃烧恶化,导致其动力性能降低。基于此,针对多旋翼无人机用二冲程活塞式电喷汽油机,结合多旋翼无人机特性,提出一种自适应高海拔的喷油补偿修正控制系统,该系统将传感器采集到的进气负压、进气温度、缸体温度以及氧含量传输到发动机控制器,控制器根据传感器数据计算出喷油量补偿值,最后由驱动控制电路控制输出喷油脉冲信号,实现实时精准控制喷油脉宽。半物理实验表明,改进后的电喷发动机在不同海拔高度相同油门条件下,转速最大值差值不超过200 rpm且发动机油门响应时间不超过200 ms,一定程度上提高了动力性能。
Gasoline engines for oil-powered multi-rotor UAVs are prone to oil-gas mismatch in high-altitude environments, which worsens fuel combustion and reduces its power performance.Based on this, for the two-stroke piston EFI gasoline engine for multi-rotor UAVs, combined with the characteristics of multi-rotor UAVs, an adaptive high-altitude fuel injection compensation correction control system is proposed.The negative pressure, intake air temperature, cylinder temperature and oxygen content are transmitted to the engine controller.The controller calculates the fuel injection compensation value according to the sensor data.Finally, the drive control circuit controls the output of the fuel injection pulse signal to achieve real-time and accurate fuel injection control Pulse width.Semi-physical experiments show that the improved EFI engine under the same throttle conditions at different altitudes, the maximum speed difference does not exceed 200 rpm and the engine throttle response time does not exceed 200 ms, which improves the power performance to a certain extent.
作者
周晗
姜文辉
于海生
张永伟
胡为
ZHOU Han;JIANG Wen-hui;YU Hai-sheng;ZHANG Yong-wei;HU Wei(School of Aeronautics and Astronautics,Shenyang Aerospace University,Shenyang 110135,China;Shangliang Zhongyi(Shenyang)High Tech Co.,Ltd.,Shenyang 110000,China)
出处
《组合机床与自动化加工技术》
北大核心
2022年第4期175-179,共5页
Modular Machine Tool & Automatic Manufacturing Technique
基金
辽宁省“兴辽英才计划”项目(XLYC1808044)。
关键词
油动无人机
发动机
电喷系统
喷油修正
oil-powered UAV
engine
electronic injection system
fuel injection correction
