A Novel Deadbeat Control with Extended State Observer for PMSM Sensorless Drive System

2018 ◽  
Author(s):  
Zhao Xue ◽  
Zhe Chen ◽  
Guangzhao Luo
Keyword(s):  
State Observer ◽  
Drive System ◽  
Extended State Observer ◽  
Extended State ◽  
Deadbeat Control ◽  
Sensorless Drive

scholarly journals Extended State Observer-Based Predictive Speed Control for Permanent Magnet Linear Synchronous Motor

Processes ◽  
2019 ◽  
Vol 7 (9) ◽  
pp. 618 ◽  
Author(s):  
Yao Wang ◽  
Haitao Yu ◽  
Zhiyuan Che ◽  
Yuchen Wang ◽  
Cheng Zeng
Keyword(s):  
Permanent Magnet ◽  
Synchronous Motor ◽  
State Observer ◽  
Drive System ◽  
Extended State Observer ◽  
Tracking Performance ◽  
Extended State ◽  
Predictive Function ◽  
Speed Tracking ◽  
Linear Synchronous Motor

Combining the feedback of predictive function control and the feedforward of extended state observer, a composite control strategy is proposed for the permanent magnet linear synchronous motor (PMLSM). The mathematical model of the PMLSM vector control system is established based on the basic structure and operation mechanism of PMLSM. Then, a speed regulator based on predictive function control (PFC) is designed to improve the speed tracking performance of the PMLSM drive system. The state and disturbance of the PMLSM system estimated by the extended state observer (ESO) transferred to the PMLSM drive system, and the robustness of the drive system will be improved. Comparative simulation and experiment results show that the proposed method has better speed tracking performance and disturbance rejection property.

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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