摘要
电动静液压作动器(EHA)作为飞行器舵机集成一体化作动系统具有体积小、功率密度高的优点,EHA以双余度稀土永磁无刷直流伺服系统作为执行机构提高了舵机工作的可靠性。通过对不同类型的余度运行模式与双余度电机结构特性的比较,确定了系统的拓扑结构。详细分析了双余度电机电磁转矩纷争产生的原因与后果,提出了以位置交叉反馈与分段线性插值消除转矩纷争的方法。实验证明,该方法易于工程实现,能消除余度间转矩纷争现象。系统带宽5Hz,满足现代飞行器作动系统的要求,在未来功率电传的飞控系统中具有应用前景。
Electric hydrostatic actuator as the integrated actuation system used in aircraft has the advantages of both small size and high power density. Dual-redundancy rare earth permanent magnet brushless DC servo system used in EHA improves aircraft control actuator working reliability. The system topology is proposed by the analysis of different kinds of redundancy running modes and structures of dual-redundancy motor. The cause and consequence of unequal torque in two redundancy motors are analyzed. The equal torque is realized by using crossed-feedback control and piecewise linear interpolation methods. Experimental results show that the method can effectively eliminate torque unequal. The system frequency response can achieve 5Hz, which can meet the requirements of modern aircraft actuation system, and it can be used in the future power-by-wire flight control system.
出处
《电工技术学报》
EI
CSCD
北大核心
2009年第6期17-23,共7页
Transactions of China Electrotechnical Society
基金
十五航空支撑技术预研基金资助项目(418010501-3)
关键词
双余度
电动静液压作动器
永磁无刷直流电机
伺服系统
转矩纷争
Dual-redundancy, electric hydrostatic actuator, permanent magnet brushless dc motor, servo system, torque unequal
