摘要
载人电动直升机选用高效永磁同步电机(PMSM)为飞机提供动力,并采用PMSM矢量控制系统。PMSM位置传感器易发生故障,导致控制系统失效。滑模变结构控制技术是电动直升机运行的关键技术。针对传统线性化法、基于转塔半经验公式进行分析,设计了Manda/km系统变频器参数辨识方法(PWR)来实现对电机体积压缩后旋翼偏航差稳态的有效抑制,利用直升机模型,采用非线性模糊推理理论建立了状态估计及隶属度函数,并给出相应的控制策略。研究采用电流误差法建立滑模观测器的数学模型并建立位置传感器故障的数学模型。通过对比电机转子位置估计值与实际值数据实现对位置传感器的故障诊断。故障时,系统将自动采用滑膜观测器转子位置和速度的估计值信号,保证电机的闭环控制。MATLAB仿真结果表明:所设计的基于滑膜观测器的冗余控制方案能够正确估计转子的位置和速度信息,确保电推进系统的稳定运行。
A high-efficiency permanent magnet synchronous motor(PMSM)and PMSM vector control system power the manned electric helicopter.PMSM position sensor is prone to failure,resulting in control system failure.Sliding mode variable structure control technology is the key technology of electric helicopter operation.Based on the analysis of the traditional linearization method and the semi-empirical formula of the turret,the parameter identification method(PWR)of the Manda/km system frequency converter is designed to effectively suppress the steady state of the rotor yaw after the motor volume is compressed.The state estimation and membership function are established by using the helicopter model and the nonlinear fuzzy reasoning theory,and the corresponding control strategy is given.The current error method is used to establish the mathematical model of sliding mode observer and the mathematical model of position sensor fault.The fault diagnosis of the position sensor is realized by comparing the estimated value of the motor rotor position with the actual value.In case of fault,the system will automatically adopt the estimated signal of rotor position and speed of sliding film observer to ensure the closed-loop control of the motor.The simulation results of MATLAB show that the designed redundant control scheme based on sliding film observer can correctly estimate the rotor position and speed information,and ensure the stable operation of the electric propulsion system.
作者
杨森童
张庆新
王书礼
庞济宝
Yang Sentong;Zhang Qingxin;Wang Shuli;Pang Jibao(School of Automation,Shenyang University of Aeronautics and Astronautics,Shenyang 110000,China;Liaoning Institute of General Aviation,Shenyang University of Aeronautics and Astronautics,Shenyang 110000,China)
出处
《机电工程技术》
2023年第3期84-88,共5页
Mechanical & Electrical Engineering Technology
基金
辽宁省重点攻关项目(编号:JYT19002)。
