Research on a New Accurate Thrust Control Strategy for Linear Induction Motor

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