Gain-Scheduling Control Solutions for a Strip Winding System with Variable Moment of Inertia

Szedlak-Stînean, Alexandra-Iulia; Bojan-Dragoş, Claudia-Adina; Precup, Radu‐Emil; Rădac, Mircea-Bogdan

doi:10.1016/j.ifacol.2018.06.094

Cited by 3 publications

(1 citation statement)

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“…Conventional decentralized controller design is based on the linearized model of winding system. Some other techniques such as the gain scheduling approach [3], [6], [10], [11], [13], [14] and the linear parameter varying control strategy [3], [6], [11] are introduced to improve the robustness to the radius variations and changes of operating points. Other uncertain parameters (changes in Young's modulus and section of web) are not considered in those control.…”

Section: Introductionmentioning

confidence: 99%

Robust Decentralized $H_\infty$ Control for a Multi-Motor Web-Winding System

2019

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To deal with the nonlinear coupling, strong disturbances and parametric uncertainties existing in the multi-motor web-winding system, a robust decentralized H ∞ control method is proposed in this paper. First, the whole web-winding system is considered as a synthetic system composed of several subsystems. Giving that some parameters are time dependent and set points are modified during the winding process, each subsystem can be seen as a dynamic interval system and interval matrix is introduced. Then, a robust decentralized H ∞ controller is designed to attenuate tension fluctuations introduced by the external disturbances and interaction between two consecutive subsystems. Sufficient condition for the existence of robust decentralized H ∞ control law is presented in terms of linear matrix inequality. Finally, some simulations and experiments are conducted with the conventional decentralized controller and the proposed controller. The comparative results show that the proposed control scheme greatly improves the control performance of the web tensions.INDEX TERMS Multi-motor web-winding system, robust decentralized H ∞ control, linear matrix inequality (LMI), interval matrix, tension control.

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