Improved predictive position control for linear synchronous motor with disturbance observer

This paper proposes an improved predictive position control (IPPC) method based on the disturbance observer (DOB) for linear synchronous motor (LSM) to enhance tracking accuracy and robustness against parameter mismatches load disturbance. A soft constraint containing difference between errors their exponential convergence trajectory is developed cost function improve accuracy. Moreover, IPPC employs a variable exponential-based DOB estimate disturbances system’s The stability analyzed using Lyapunov theory Bellman’s principle of optimality. experimental results show effectiveness scheme.