小型航空活塞发动机点火系统优化设计

张奇; 徐国强; 杜发荣

小型航空活塞发动机点火系统优化设计

1.
北京航空航天大学交通科学与工程学院, 北京 100191
2.
北京航空航天大学能源与动力工程学院, 北京 100191

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出版历程
- 收稿日期: 2011-08-26
- 修回日期: 2011-10-18
- 刊出日期: 2012-02-28

Aero piston engine capacitor discharge ignition system optimization research and design

1.
School of Transportation Science and Technology, Beijing University of Aeronautics and Astronautics, Beijing 100191, China
2.
National Key Laboratory of Science and Technology on Aero-engine Aero-thermodynamics, School of Jet Propulsion, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

摘要

摘要: 针对微型无人机用小功率航空活塞发动机电容放电点火系统快速高效充电进行了优化设计与试验研究.分析了传统充电升压变换采用恒频脉宽调制PWM(pulse width modulation)方式的缺点,提出了一种开关频率可变、输出电压检测无需电阻分压实现的充电方式,推导给出了关断时间和充电时间的计算公式,设计实现了该充电电路并进行了试验.结果表明:该充电方式充电时间短,效率高;充电时间估算方法准确可靠,误差小,计算量少.
- 无人机 /
- 航空活塞发动机 /
- 电容放电 /
- 点火系统 /
- 反激变换
Abstract: Reliable and robust high energy ignition system was optimized and tested for aero piston engine. The traditional fixed-frequency PWM (pulse width modulation) flyback step-up charging method and its drawbacks were analyzed, and then a variable-frequency PFM (pulse frequency modulation) charging method and a way to sense output voltage without resistor arrays feedback were proposed, and the appropriate charge time computation algorithm was presented, lastly the capacitor charge circuit was designed and tested. The experimental result shows that the proposed charging method works correctly with more efficiency, and the charge time computation formula is precise.
- UAV(unmanned aerial vehicle) /
- aero piston engine /
- capacitor discharge /
- ignition system /
- flyback converter

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参考文献(12)

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