Extended State Observer Based Current Decoupling Control for PMSM

2019 ◽  
Author(s):  
Yuzhu Wang ◽  
Shuying Yang ◽  
Zhen Xie
Keyword(s):  
State Observer ◽  
Extended State Observer ◽  
Decoupling Control ◽  
Extended State

scholarly journals Decoupling Control of Diesel Engine Air System Based on Multi-variable Extended State Observer

2021 ◽  
Vol 54 (10) ◽  
pp. 316-323
Author(s):  
Hui Xie ◽  
Wanlu Sun ◽  
Kang Song ◽  
Wenchao Xue ◽  
Xiaojing Song
Keyword(s):  
Diesel Engine ◽  
State Observer ◽  
Extended State Observer ◽  
Decoupling Control ◽  
Extended State ◽  
Air System

scholarly journals Decoupling Attitude Control of a Hypersonic Glide Vehicle Based on a Nonlinear Extended State Observer

2020 ◽  
Vol 2020 ◽  
pp. 1-11 ◽  
Author(s):  
Jian Chen ◽  
Nannan Du ◽  
Yu Han
Keyword(s):  
Attitude Control ◽  
Closed Loop ◽  
Control Method ◽  
Tracking Error ◽  
State Observer ◽  
Extended State Observer ◽  
Decoupling Control ◽  
Extended State ◽  
Loop Control ◽  
Nonlinear Extended State Observer

Aiming at solving the attitude control problem of a hypersonic glide vehicle, this paper proposes a decoupling control method based on a nonlinear extended state observer (NESO). According to the decentralized robust control theory of Tornambè, the coupling terms and the uncertainties are regarded as generalized uncertainties, and the NESO-based estimation and compensation signals are added to the closed-loop control law. The theoretical deduction proves that the proposed method can ensure that the tracking error of the closed-loop system is uniformly bounded. The simulation is carried out on the hypersonic glide vehicle model and compared with the traditional subchannel feedback control method. The simulation results show that the designed decoupling control method has superior control performances, and the influence of channel-coupling and uncertainty is compensated to a great extent.

scholarly journals Composite Decoupling Control of PMSM Based on Extended State Observer

2021 ◽  
Vol 2137 (1) ◽  
pp. 012003
Author(s):  
Hongliang Yan ◽  
Yan Geng ◽  
Weizhi Zhai
Keyword(s):  
Control Method ◽  
Voltage Drop ◽  
Permanent Magnet Synchronous Motor ◽  
State Observer ◽  
Extended State Observer ◽  
Decoupling Control ◽  
Current Loop ◽  
Extended State ◽  
Decoupling Method ◽  
Dynamic Decoupling

Abstract In order to solve the problem that the dynamic decoupling performance of the traditional decoupling method is reduced due to the parameter disturbance of permanent magnet synchronous motor (PMSM), a composite decoupling control method based on extended state observer (ESO) is proposed in this paper. In this method, voltage drop across stator resistance, cross coupling terms, internal uncertains and external load torque are taken as disturbances. The disturbance is observed in real time by using the extended state observer and compensated to the output end of the current controller, so as to realize the current decoupling control of the system and achieve the purpose of precise control of the current loop. The results of theoretical analysis show and simulation show that the composite decoupling control strategy based on extended state observer has better dynamic decoupling effect.

A Novel Speed-Sensorless Suspension Decoupling Control Strategy for Bearingless Motor Based on Linear Extended State Observer

2011 ◽  
Vol 383-390 ◽  
pp. 5598-5604
Author(s):  
Qiang Ding
Keyword(s):  
Control Strategy ◽  
State Observer ◽  
Suspension System ◽  
Extended State Observer ◽  
Decoupling Control ◽  
Current Loop ◽  
Extended State ◽  
Speed Sensorless ◽  
Bearingless Motor ◽  
Linear Extended State Observer

In this paper, a novel speed-sensorless suspension decoupling control strategy for bearingless motor was proposed based on linear Extended State Observer (ESO). In the proposed control strategy, a second-order and a third-order linear-ESO algorithm were added respectively into torque d-q axis current-loop and suspension system x-y direction displacement-loop. A product of electrical angular speed and torque system d-q axis current and a product of torque q axis flux and suspension system d-q axis current were defined as disturbances in order to use the linear-ESO algorithm to estimate the defined disturbances. By obtaining speed information and compensation for disturbance force, the motor can work on speed-sensorless condition and traditional decoupling algorithm can be simplified. The simulation results show that the proposed control strategy can realize accurate speed estimation and guarantee stable suspension under the rated speed.

scholarly journals Fault-tolerant control for a class of n-order systems based on fast terminal sliding mode and extended state observer

2021 ◽  
pp. 002029402110286
Author(s):  
Pu Yang ◽  
Peng Liu ◽  
ChenWan Wen ◽  
Huilin Geng
Keyword(s):  
Fault Tolerant ◽  
Sliding Mode ◽  
Singular Control ◽  
Fault Tolerant Control ◽  
State Observer ◽  
Extended State Observer ◽  
Extended State ◽  
Terminal Sliding Mode ◽  
Fast Terminal Sliding Mode ◽  
Terminal Sliding Surface

This paper focuses on fast terminal sliding mode fault-tolerant control for a class of n-order nonlinear systems. Firstly, when the actuator fault occurs, the extended state observer (ESO) is used to estimate the lumped uncertainty and its derivative of the system, so that the fault boundary is not needed to know. The convergence of ESO is proved theoretically. Secondly, a new type of fast terminal sliding surface is designed to achieve global fast convergence, non-singular control law and chattering reduction, and the Lyapunov stability criterion is used to prove that the system states converge to the origin of the sliding mode surface in finite time, which ensures the stability of the closed-loop system. Finally, the effectiveness and superiority of the proposed algorithm are verified by two simulation experiments of different order systems.

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