Abstract
To realize the precise thrust force control in permanent magnet linear synchronous motor (PMLSM) drives, this paper studies a novel design method of the high-performance current inner loop. First, to increase the control bandwidth, an optimized predictive current controller, which takes account of the one-step delay issue, is presented on the basis of the discrete-time model of the PMLSM. Second, as disturbance factors, the thrust ripple and parameter variation can influence the input and output command of the current controller, respectively. Therefore, an improved sliding mode algorithm with the variable exponential reaching law is introduced to suppress these two disturbances simultaneously, and the stability analysis is given to prove the convergence of the algorithm through the Lyapunov stability theory. Finally, a precise experimental platform on account of the aerostatic guide is established, and experimental results are given to demonstrate the feasibility of the proposed control scheme.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
