Yu, J.Shi, P.Yu, H.Chen, B.Lin, C.2016-07-282016-07-282015IEEE Transactions on Cybernetics, 2015; 45(7):1363-13712168-22672168-2275http://hdl.handle.net/2440/100263This paper considers the problem of discrete-time adaptive position tracking control for a interior permanent mag- net synchronous motor (IPMSM) based on fuzzy-approximation. Fuzzy logic systems are used to approximate the nonlinearities of the discrete-time IPMSM drive system which is derived by direct discretization using Euler method, and a discrete-time fuzzy position tracking controller is designed via backstepping approach. In contrast to existing results, the advantage of the scheme is that the number of the adjustable parameters is reduced to two only and the problem of coupling nonlinearity can be overcome. It is shown that the proposed discrete-time fuzzy controller can guarantee the tracking error converges to a small neighborhood of the origin and all the signals are bounded. Simulation results illustrate the effectiveness and the potentials of the theoretic results obtained.en2014 IEEE. Personal use is permitted, but republication/redistribution requires IEEE permission. See http://www.ieee.org/publications_standards/publications/rights/index.html for more informationBackstepping; discrete-time; fuzzy-approximation; permanent magnet synchronous motor (PMSM)Journal article003002274010.1109/TCYB.2014.23513990003563863000122-s2.0-850279278332-s2.0-84933049768173448Shi, P. [0000-0001-6295-0405] [0000-0001-8218-586X] [0000-0002-0864-552X] [0000-0002-1358-2367] [0000-0002-5312-5435]