飞行控制用无刷直流电动机容错运行方式.pdfVIP

2006 2 F bruary 2006 32 2 Journal of B ijing Univ rsity of A ronautics and Astronautics Vol. 32 No2 周元钧 董慧芬 王自强 ( , 100083) : 双重绕组无刷直流电动机构成的双通道机电作动系统( EMA, El ctroM chan ical Actuator) , 当 一个通道 障时可以采用容错运行方式. 分析了电动机在双绕组工作与单绕 组工作时的机械特性铜损耗与允许转矩. 对样机的机械特性试验曲线分析可知, 在相同的电 压条件下, 两种工作方式的机械特性有相同的理想空载转速, 但容错工作时因负载产生的转速 降将增大1倍. 在功率损耗不变的条件下, 容错工作时电动机的允许电流为额定值的1. 4 倍, 允许转矩为额定值的0. 7 倍, 通过样机的温升试验数据充分验证了这 一点. 探讨了双绕组运行 时的电流均衡控制方法以及容错工作采取的措施, 并用仿真曲线分析了容错工作方式下的动 态性能. : 无刷电机; 容错; 机电作动系统 : TM 921 : A : 2006) Faulttolerance operation of brushless DC motor for flight control Zhou Yuanjun Dong Huif n Wang Ziqiang ( School of Automation Sci nc and El ctrical Engin ring, B ijing Univ rsity of A ronautics and Astronautics, B ijing 100083, China) Abstract: Th op ration of a brushl ss DC motor with dualwindings for th flight control syst m was d scrib d. Th dualchann ls l ctrom chanical actuator ( EMA) is compos d of th motor, th faulttol ranc op ra tion mod can b obtain d wh n any chann l is failur . Th m chanical charact ristic, pow r loss s and allow d torqu of th motor w r analyz d at two cas s of normal and faulttol ranc op ration mod s. From th xp rim ntal m chanical charact ristics curv , it can b obtain d that th no load sp ds of two op ration mod s ar sam und r th sam voltag , but th sp d drop in th cas of th faulttol ranc op ration is gr at r than th normal op ration b caus of th load. Holding th pow r loss not chang d in th cas of faulttol ranc op ration, th motor allow d curr nt is 1. 4 tim s of th rat d curr nt and th allow d torqu is 0. 7 tim s of th rat d torqu , th s w r validat d by th t mp ratur xp rim ntal data. T