624 片持送水管の構造系と制御系の同時最適設計 : 複合送水管に対する実験的検証(流動励起振動の制振とその利用)(OS.17 : 流体関連振動のダイナミクスと制御)

概要

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We deal with a simultaneous optimal design of structural and control system of cantilevered pipes conveying fluid. A combined pipe conveying fluid, which is a beam (with variable shape) sandwiched by two pipes conveying fluid is considered in this report. The mathematical model of the combined pipe system is derived as a single pipe conveying fluid whose structural properties are variable. The width distribution of the beam and the location of the sensor and the actuator are structural design parameters. We employ the LQG control law with the input energy constraint as the active control method. The structural design parameters and the LQG controller are simultaneously adjusted so that the critical flow velocity of the controlled system (closed-loop critical flow velocity) is maximized with an iterative numerical optimization technique. The simulation result shows that the necessity of the simultaneous optimal design methodology for designing the active control system of the cantilevered pipe conveying fluid. The experimental study is also conducted. Fairly agreement is achieved between the simulation and the experimental results. The result of the experiment emphasizes the proposed design method.
一般社団法人日本機械学会の論文
2001-08-03