双余度机电作动伺服系统数学模型与特性

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Abstract 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.

Key words： Electromechanical actuator dual-redundancy permanent magnet brushless motor servo system torque unequal

Received: 24 May 2012 Published: 16 June 2014

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	Luo Zhanqiang
	Liang Deliang

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Luo Zhanqiang,Liang Deliang. Mathematical Model and Characteristics on <br/>Dual-Redundancy Electromechanical Actuation Servo System[J]. Transactions of China Electrotechnical Society, 2014, 29(1): 165-173.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2014/V29/I1/165

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