C12 ナイキスト安定判別法に基づく実測データをもちいた安定性シミュレーションとその適用例(OS8 機械・機械構造物の耐震・免震・振動制御(2)1)
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概要
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In general, in analysing the stability of a control system, most of that calculate with a mathematical model of the actual plant. However, to simplify the calculation afterwards, an actual plant with a complex characteristic is omitted by the making process to the mathematical model. Therefore, there is, in no small way, the wrong evaluation that the unstable system as stable with modeling error. On the other hand, Nyquist criterion is useful technique to identify stability of the control system by experimentation, certainly. But in many cases, in the actual operation, there is only chance to experiment several times to identify the plant. To secure safety, the controller that applies to a actual plant sacrifices the control performance, by above reasons. In this study, the technique that calculate open ioop characteristic of any controller using the element of experimental data of the plant to evaluate its stability was proposed. Finally, the usefulness of that technique was shown with application examples.
- 2009-09-01
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