蒸気発生装置の最適制御に対する一考察

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  • Some Studies for Optimum Control of Steam Generator
  • ジョウキ ハッセイ ソウチ ノ サイテキ セイギョ ニ タイスル イチ コウサツ

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For two systems of ACC having a constant pressure point at the main steam pipe, optimum controller settings are investigated. (Part I) System using only pressure and (Part II) System using pressure and difference between supplied heat and load. 25% damping is used for the optimum condition. For part I, expressing gain by k1, and reset time by λ1TB, k1, λ1 and ρ=TB/TF have a certain relation, which is given in graph for ρ=5, 2.5 and 1.25. For part II, expressing gain of pressure by k1, gain of difference between heat and load by k2, k2=k1/5.41ρ-1 is held for P controller. Where TB, and TF are the time constants of thermal capacity and heat transfer respectively. Maximum pressure deviations for step changes of load are given in another graph. Giving required control characteristics, necessary system and controller settings can be obtained by the above graphs for given boiler parameters.

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