双余度机电作动伺服系统数学模型与特性  

Mathematical Model and Characteristics on Dual-Redundancy Electromechanical Actuation Servo System

作　　者：罗战强[1,2] 梁得亮[1] 

机构地区：[1]西安交通大学电气工程学院,西安710049 [2]中国航空工业集团公司庆安集团有限公司,西安710077

出　　处：《电工技术学报》2014年第1期165-173,共9页Transactions of China Electrotechnical Society

基　　金：国家自然科学基金资助项目(51177125)

摘　　要：机电作动器作为飞行控制系统之伺服作动器具有体积小、功率密度大的优点,而双余度永磁无刷电机作为机电作动伺服系统的动力源提高了伺服作动系统工作的可靠性。通过对不同的系统工作模式与双余度永磁无刷电机结构特性的比较,建立了双余度伺服作动系统数学模型。详细分析了双余度永磁无刷电机电磁转矩纷争产生的原因,提出了以数据链交叉反馈及均衡算法抑制转矩纷争的方法。理论分析及实验证明,该方法能消除余度电机间转矩纷争现象;系统频带宽3Hz,满足多电以及全电飞机电力作动系统的要求。Electromechanical actuator（EMA） as the flight control system of the servo actuator has the advantages of small size and high power density. Dual-redundancy permanent magnet brushless motor（DRPMBLM） used in servo system improves the reliability of the work. The dual-redundancy servo actuation system mathematical model is established by the different system work modes and DRPMBLM of the structure characteristics of comparison. The cause and consequence of unequal torque in DRPMBLM are analyzed. The equal torque is realized by using crossed-feedback control and equalization algorithm or eliminated unequal torque. Theoretical analysis and experimental results show that the method can effectively eliminate the redundancy motor torque unequal. The system frequency response can achieve 3Hz, which can meet the requirements of electrically powered actuation system of more electric aircraft and all electric aircraft.

关 键 词：机电作动器 双余度永磁无刷电机 伺服系统 转矩纷争 

分 类 号：TM32[电气工程—电机]