Research on a new accurate thrust control strategy for linear induction motor

The linear induction motor is widely used in electromagnetic aircraft launch, convey systems and transportation application, and the thrust control accuracy of linear induction motor is the most important technical factor for stable running. In this paper, the mathematical model of linear induction motor was built, and a new accurate thrust control strategy was proposed, which included adaptive parameters identification and thrust deviation correction. The adaptive parameters identification was designed based on Lyapunov stabilization theory. Then, the thrust deviation correction system was presented based on q-axis component of secondary flux, improving the thrust control accuracy and dynamic response. In the last, the simulation model was built for verifying the proposed thrust control strategy.