分布式电推进飞机双永磁电动机系统控制策略  

Control strategy of dual permanent magnet motor system for distributed electric propulsion aircraft

作　　者：翁卢晖 姚太克 张玄 张荣格 卜飞飞[1] WENG Luhui;YAO Taike;ZHANG Xuan;ZHANG Rongge;BU Feifei(College of Automation Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 211106,China;System Department,Aero Engine Control System Institute,Aero Engine Corporation of China,Wuxi Jiangsu 214063,China)

机构地区：[1]南京航空航天大学自动化学院,南京211106 [2]中国航发控制系统研究所系统部,江苏无锡214063

出　　处：《航空动力学报》2023年第5期1259-1269,共11页Journal of Aerospace Power

基　　金：国家自然科学基金(52177050)。

摘　　要：为了减小气流等其他因素对分布式电推进飞机中各推进电动机带来的负载扰动导致的转速突变,使得总推力突变或机身左右两侧推力不一致而导致飞机偏航,需要保证各推进电动机具有良好的抗干扰能力和转速同步性。针对此问题,提出了一种针对双永磁电机系统的改进交叉耦合控制策略,采用了改进趋近律的滑模同步控制器。同时设计了一种负载观测器,该观测器以可直接通过位置传感器测得的电机转子位置信号为已知量,避免了微分突变的引入。对所提出的双永磁电机系统控制策略进行了一系列仿真及实验验证,仿真与实验结果发现:在转矩突变时,该控制策略与传统交叉耦合控制策略相比,转速突变减小约50%,同步误差减小约18%,证明了该控制策略与传统交叉耦合控制策略相比具有更高的同步性能和更强的抗干扰能力。In order to reduce the sudden change of speed caused by load disturbance arising from air flow and other factors on each propulsion motor in distributed electric propulsion aircraft,which results in sudden change of total thrust or inconsistent thrust on the left and right sides of the fuselage,it is necessary to ensure that each propulsion motor has good anti-interference ability and speed synchronization.To solve this problem,an improved cross coupling control strategy for dual permanent magnet motor system was proposed,and a sliding mode synchronous controller with improved reaching law was adopted.At the same time,a load observer was designed,which took the motor rotor position signal directly measured by the position sensor as the known quantity,and avoided the introduction of differential mutation.Finally,a series of simulations and experiments were carried out to verify the proposed control strategy of dual permanent magnet motor system.Simulation and experimental results showed that compared with traditional cross coupling control strategies,this control strategy reduced speed mutation by about 50%and synchronization error by about 18%in case of torque mutation,which proved that this control strategy had higher synchronization performance and stronger anti-interference ability compared with traditional cross coupling control strategies.

关 键 词：分布式电推进飞机 双永磁电动机 交叉耦合控制 滑模同步控制器 负载观测器 

分 类 号：V242.5[航空宇航科学与技术—飞行器设计]