Anti-Disturbance Dynamic Surface Control for Position Tracking of Interior Permanent Magnet Synchronous Motor Based on Nonlinear Extended State Observer

Xiaobing Niu,Dan Wang,Weihu Chen,Siming Cong

doi:10.1109/access.2021.3086506

Abstract

In this paper, an anti-disturbance output feedback dynamic surface control (DSC) method is proposed for the position tracking of interior permanent magnet synchronous motor subject to unknown nonlinearities and time-varying disturbances. Specifically, a nonlinear extended-state-observer (NLESO) based on exponential functions is designed to estimate the total disturbance composed of system uncertainties and external disturbances. Then, by compensating for the total disturbance via the NLESO, an anti-disturbance output feedback law is designed based on the DSC approach. The salient features of the proposed approach is twofold. First, the total uncertainty including internal and external disturbances can be accurately estimated by an NLESO in real time. Second, the desired anti-disturbance performance of the servo control system can be achieved regardless of the position measurement only. The stability of the closed-loop control system is proved by using the cascade theory and input-to-state stability theory. Both simulation and experiment results are conducted to illustrate the effectiveness of the proposed control method.

Highlights

Permanent magnet synchronous motor (PMSM) has attracted increasing attention due to its favorable characteristics such as high power density, high efficiency, low cost, light weight, small size, and wide range of speed regulation [1], [2]
interior permanent magnet synchronous motor (IPMSM) is a complicated system of highnonlinearities, strong-coupling and multi-variables, and its parameters are very sensitive to environment
In [3], a discrete-time fuzzy position tracking controller is designed via backstepping approach to overcome the problem of coupling nonlinearity in the IPMSM drive system

Summary

Introduction

Permanent magnet synchronous motor (PMSM) has attracted increasing attention due to its favorable characteristics such as high power density, high efficiency, low cost, light weight, small size, and wide range of speed regulation [1], [2]. The interior permanent magnet synchronous motor (IPMSM) being one kind of PMSMs has superior characteristics of better armature reaction, flux weakening capability, and high mechanical strength. In [3], a discrete-time fuzzy position tracking controller is designed via backstepping approach to overcome the problem of coupling nonlinearity in the IPMSM drive system. In [21], an adaptive quasi-sliding-mode rotor position observer-based control using an online parameter adaption scheme is proposed to estimate the extended electromotive force components in an IPMSM. In [41], a maximum torque per ampere control strategy incorporated with an online parameter estimation scheme for IPMSM drive system is proposed to achieve a robust and efficient control

Objectives

Methods

Conclusion