scholarly journals Power decoupling control of DFIG rotor‐side PWM converter based on auto‐disturbance rejection control

Wind Energy ◽  
2021 ◽  
Author(s):  
Zhenxiong Zhou ◽  
Hongyi Peng ◽  
Bingshen Liu ◽  
Wenbao Wang ◽  
Guocheng Niu ◽  
...  
Keyword(s):  
Disturbance Rejection ◽  
Decoupling Control ◽  
Pwm Converter ◽  
Disturbance Rejection Control ◽  
Power Decoupling

Decoupling control of high-purity heat integrated distillation column process via active disturbance rejection control and nonlinear wave theory

2020 ◽  
Vol 42 (12) ◽  
pp. 2221-2233 ◽  
Author(s):  
Yun Cheng ◽  
Zengqiang Chen ◽  
Mingwei Sun ◽  
Qinglin Sun
Keyword(s):  
Nonlinear Wave ◽  
Control Strategy ◽  
High Purity ◽  
Disturbance Rejection ◽  
Distillation Column ◽  
Decoupling Control ◽  
Active Disturbance Rejection Control ◽  
Active Disturbance Rejection ◽  
Disturbance Rejection Control ◽  
Control Scheme

Although the heat integrated distillation is an energy-efficient and environment-friendly separation technology, it has not been commercialized. One of the reasons is that the nonlinear dynamics and the interactions between various control loops have limited the performance of the traditional control strategy. To achieve a high-purity product concentration, a dynamic decoupling control strategy based on active disturbance rejection control (ADRC) is proposed. The effects of interactions, uncertainties and external disturbances can be estimated and rejected by using extended state observer. Considering the constraints on manipulated variables, an optimized ADRC is designed for the first-order system. Moreover, a concentration observer based on a nonlinear wave model is formulated to reduce the number of sensors. In the simulation research, the related internal model control (IMC), multi-loop ADRC and model predictive control (MPC) are compared with the proposed control scheme. The simulation results demonstrate the advantages of the proposed control scheme on tight control, decoupling performance and disturbance rejection for the high-purity heat integrated distillation column.

scholarly journals A Decoupling Control Algorithm for Unwinding Tension System Based on Active Disturbance Rejection Control

2013 ◽  
Vol 2013 ◽  
pp. 1-18 ◽  
Author(s):  
Shanhui Liu ◽  
Xuesong Mei ◽  
Fanfeng Kong ◽  
Kui He
Keyword(s):  
Disturbance Rejection ◽  
Decoupling Control ◽  
Active Disturbance Rejection Control ◽  
System A ◽  
Active Disturbance Rejection ◽  
Disturbance Rejection Control ◽  
Ideal Approach ◽  
Working Principle ◽  
Control Methodology ◽  
Printing Machine

This paper presents a new control methodology based on active disturbance rejection control (ADRC) for designing the tension decoupling controller of the unwinding system in a gravure printing machine. The dynamic coupling can be actively estimated and compensated in real time, which makes feedback control an ideal approach to designing the decoupling controller of the unwinding system. This feature is unique to ADRC. In this study, a nonlinear mathematical model is established according to the working principle of the unwinding system. A decoupling model is also constructed to determine the order and decoupling plant of the unwinding system. Based on the order and decoupling plant, an ADRC decoupling control methodology is designed to enhance the tension stability in the unwinding system. The effectiveness and capability of the proposed methodology are verified through simulation and experiments. The results show that the proposed strategy not only realises a decoupling control for the unwinding system but also has an effective antidisturbance capability and is robust.

Study on Three-Motor Synchronous System of Fuzzy Active Disturbance Rejection Control

2012 ◽  
Vol 224 ◽  
pp. 543-546 ◽  
Author(s):  
Lin Tang ◽  
Xing Qiao Liu ◽  
Li Ting Zhu
Keyword(s):  
Control System ◽  
Pid Control ◽  
Disturbance Rejection ◽  
Decoupling Control ◽  
Deterministic System ◽  
Static Characteristics ◽  
Synchronous System ◽  
Active Disturbance Rejection ◽  
Disturbance Rejection Control ◽  
Approximate Linearization

Fuzzy active disturbance rejection controller of three-motor synchronous system is proposed in this paper, which could adjust the parameters automatically by using the inferential capability of fuzzy control. Double channels compensation of extended state observer is used to estimate and compensate the total disturbance of the system and the coupling between speed and tensions, thus an approximate linearization and deterministic system is obtained. The results of experiments prove that the control system has better performances of dynamic and static characteristics, stronger anti-interference ability and better robustness than the traditional PID control system, realizing a better decoupling control of speed and tensions.

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