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2022, Volume 23, Issue 2

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Frontiers of Information Technology & Electronic Engineering >> 2022, Volume 23, Issue 2 doi: 10.1631/FITEE.2000317

Intelligent fractional-order integral sliding mode control for PMSM based on an improved cascade observer

Affiliation(s): College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China; State Key Laboratory of Fluid Power and Mechatronic Systems, Zhejiang University, Hangzhou 310027, China; College of Automation Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China; less

Received: 2020-07-03 Accepted: 2022-02-28 Available online: 2022-02-28
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Abstract

In this paper, an intelligent control (FOISMC) strategy based on an improved cascade is proposed. First, an FOISMC strategy is designed to control a . It has good tracking performance, is strongly robust, and can effectively reduce chattering. The proposed FOISMC strategy associates strong points of the integral action (which can eliminate steady-state tracking errors) and the fractional calculus (which is flexible). Second, an improved cascade is proposed to detect the rotor information with a smaller observation error. The proposed combines an adaptive sliding mode and an extended high-gain . In addition, an improved variable-speed grey wolf is designed to enhance controller parameters. The effectiveness of the strategy is tested using simulations and an experiment involving model uncertainty and external disturbance.

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