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Research of tension robust control based on mixed sensitivity
Author(s): He Jinbao, He Yongyi, Guo Shuai, Fang Minglun
Source: International Technology and Innovation Conference 2006 (ITIC 2006), 2006, p. 2061 - 2064
Type: ConferencePaper
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In order to get ideal tension control result, a H∞ robust controller based on mixed sensitivity is put forth for the dynamic instability and parametric uncertainty in the electromechanical tension system. The mathematic model for the dancer arm of tension system is set up through theoretical analysis; Then, the common method for designing robust controller based on mixed sensitivity is formulated; Finally, the weighting functions of mixed sensitivity function and complementary mixed sensitivity function are chosen, and the H∞ robust controller is designed. Comparison with the effect of conventional PID controller, the simulation result shows that the tension robust controller based on mixed sensitivity has excellent performance, such as good robust stability and interference suppression.

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Research of input-output energy decoupling in tension system
Author(s): He Jinbao, He Yongyi, Zhou Qihong, Fang Minglun
Source: International Technology and Innovation Conference 2006 (ITIC 2006), 2006, p. 2065 - 2069
Type: ConferencePaper
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The input-output energy decoupling is put forth for the complex electromechanical tension system problem including strong coupling, multi-variance, uncertainties, etc. The aim is that an energy of any input controls mainly the energy of a corresponding output and influences the energy of the other as weakly as possible. After the looper height and tension control system has been modeled, a H∞ robust control algorithm based on input-output energy decoupling is proposed in terms of the solution of linear matrix inequalities (LMI). Finally, the input-output energy decoupling algorithm is applied to the tension system, and the simulation results show that the method has satisfactory decoupling performance. The validity of the designed controller is validated.

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