An improved sensorless strategy on the basis of improved PI regulator. (26th November 2021)

• Record Type: Journal Article
• Authors: Zhang, Haigang; Liu, Piao; Chen, Xuan; Wang, Bulai
• Is Part Of: International journal of innovative computing and applications. Volume 12:Number 5/6(2021)
• Page Start: 240
• Page End: 247
• Publication Date: 2021-11-26
• Subjects: fuzzy control -- non-position sensorless -- PMSM -- sliding mode observer -- saturation function -- vector control; Evolutionary computation -- Periodicals; Neural networks (Computer science) -- Periodicals; Genetic programming (Computer science) -- Periodicals; Biologically-inspired computing -- Periodicals; Swarm intelligence -- Periodicals; Quantum computers -- Periodicals; 006.3
• Languages: English
• ISSNs: 1751-648X

Abstract

The sensorless control strategy was implemented by replacing the conventional PI regulator with an improved fuzzy PI regulator, meanwhile an adjusted sliding mode observer was established for replacing the traditional rigid position sensor based on the principle of non-position sensor. The signals of rotor speed and position were extracted from the back electromotive force for reducing the error and complexity of the calculation of the angular and rotational speed. Compared with conventional PI sliding mode observer, the control system of the PMSM has a preferable influence on the steady-state and dynamic response. A Matlab platform has been built to validate this method, and the experimental results showed that the fuzzy PI sliding mode observer had strong robustness and restrained the chattering to a certain extent. On the other hand it also could improve the stability, rapidity and dynamic performance of the SMO system.