nonlinear plants
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2021 ◽  
Author(s):  
Lingzhi Hu ◽  
Ding Wang ◽  
Mingming Zhao ◽  
Jin Ren

Entropy ◽  
2021 ◽  
Vol 23 (2) ◽  
pp. 169
Author(s):  
Ruobing Li ◽  
Quanmin Zhu ◽  
Pritesh Narayan ◽  
Alex Yue ◽  
Yufeng Yao ◽  
...  

This paper proposes a U-Model-Based Two-Degree-of-Freedom Internal Model Control (UTDF-IMC) structure with strength in nonlinear dynamic inversion, and separation of tracking design and robustness design. This approach can effectively accommodate modeling error and disturbance while removing those widely used linearization techniques for nonlinear plants/processes. To assure the expansion and applications, it analyses the key properties associated with the UTDF-IMC. For initial benchmark testing, computational experiments are conducted using MATLAB/Simulink for two mismatched linear and nonlinear plants. Further tests consider an industrial system, in which the IMC of a Permanent Magnet Synchronous Motor (PMSM) is simulated to demonstrate the effectiveness of the design procedure for potential industrial applications.


2020 ◽  
Vol 30 (16) ◽  
pp. 6518-6534
Author(s):  
Xiangpeng Xie ◽  
Bipeng Zang ◽  
Dong Yue ◽  
Mohammed Chadli

Symmetry ◽  
2020 ◽  
Vol 12 (5) ◽  
pp. 816 ◽  
Author(s):  
Marek Krok ◽  
Wojciech P. Hunek ◽  
Tomasz Feliks

The application of the switching control framework to the perfect control algorithm is presented in this paper. Employing the nonunique matrix inverses, the different closed-loop properties are obtained and further enhanced with possible switching methodology implementation. Simulation examples performed in the MATLAB/Simulink environment clearly show that the new framework can lead to benefits in terms of the control energy, speed, and robustness of the perfect control law. The possibility of transferring the new obtained results to the symmetrical nonlinear plants seems to be immediate.


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