PID Temperature Control of an Unstable Gas-phase Polyolefin Reactor
スポンサーリンク
概要
- 論文の詳細を見る
Temperature control of a gas-phase polyolefin reactor is prone to be unstable when operating conditions and/or catalyst are changed. Using a simple first principles model, it is shown that the dominant dynamics of the open-loop can be expressed by a second order transfer function, with which the number of unstable poles varies from zero to two depending on operating conditions. The frequency domain analysis shows that these changes in the process dynamics primarily affect the process phase and cause the closed-loop instability. Thus, PID temperature controller is retuned so as to increase phase margin. A practical retuning method of a PID temperature controller, which can be performed at the onset of closed-loop instability, is developed and its effectiveness is demonstrated through simulations.
- 社団法人 化学工学会の論文
著者
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OHSHIMA Masahiro
Department of Chemical Engineering, Kyoto University, Katsura Campus
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Ohshima Masahiro
Department Of Chemical Engineering Kyoto University
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SEKI Hiroya
MCC-Group Science & Technology Research Center, Mitsubishi Chemical Corporation
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OGAWA Morimasa
MCC-Group Science & Technology Research Center, Mitsubishi Chemical Corporation
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Seki Hiroya
Mcc-group Science & Technology Research Center Mitsubishi Chemical Corporation
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Ogawa Morimasa
Mcc-group Science & Technology Research Center Mitsubishi Chemical Corporation
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Ohshima Masahiro
Department Of Chemical Engineering Graduate School Of Engineering Kyoto University
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