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An, Duong-Phuoc ; Nezu, Kikuo ; Akuto, Tsuneo
概要:
application/pdf<br />Journal Article<br />This paper is concerned with the design of a slide mode control system from the view point of practical application. The problem is treated using the asymptotic reaching law method for
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assuring global stabilization, and the chattering phenomenon is alleviated by the saturated function of the boundary layer. The design algorithm is simple and applicable to a nonlinear system including disturbances and uncertainties with high robustness. Its effectiveness is proven by simulation as well as a bench experiment of a brushless motor vehicle.
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An, Duong-Phuoc ; 根津, 紀久雄 ; 阿久戸, 庸夫
概要:
application/pdf<br />Journal Article<br />This paper is concerned with the design of a slide mode control system from the view point of practical application. The problem is treated using the asymptotic reaching law method for
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assuring global stabilization, and the chattering phenomenon is alleviated by the saturated function of the boundary layer The design algorithm is simple and applicable to a nonlinear system including disturbances and uncertainties with high robustness. Its effectiveness is proven by simulation as well as a bench experiment of a brushless motor vehicle.
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藤沢, 延行 ; 白井, 紘行
概要:
application/pdf<br />Journal Article<br />The sructure of turbulence in a wall jet along a plane surface is investigated by measuring the balance of turbulence energy. With the aid of a hot-wire anemometer system, convection velocities of
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small-scale turbulent motion are measured as well as other time-averaged flow properties and turbulence characteristics. It is found that the convection velocity of small-scale turbulence deviates significantly from the mean flow velocity, that is, Taylor's hypothesis is not valid for the present wall jet, and the present results on turbulence energy balance agree much better with theoretical predictions by the turbulence model than do those based on Taylor's hypothesis.
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藤沢, 延行
概要:
application/pdf<br />Journal Article<br />2方程式乱流モデルを用いて, 平面壁, 凹面壁, 凸面壁に沿う二次元乱流壁面噴流の平均流および乱流特性を予測する方法を示し, それらの特性に対する曲率の影響
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を検討した. 曲率b/R(ただし, b:半値幅, R:曲率半径)が-0.1～0.1の範囲において, 予測結果は実験と一致する. 乱れエネルギバランスの対流・生成・散逸を実験と対比し, 曲面壁面噴流に対するモデルの適用限界について考察している.
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田部井, 勝稲 ; 白井, 紘行
概要:
application/pdf<br />Journal Article<br />非マックスウェル(NMx)電子および境界層の影響を厳密に考慮にいれて,衝撃管内の希ガス衝撃波背後の電離緩和を支配する方程式系を横成した.電離エネルギχの低い
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Xeと高いNeについてマッハ数M,切期圧力P_1,衝撃管径Dを系統的に変えて数値計算を行った.NMx電子は緩和のほとんどの領域で存在すること,NMx電子と境界層の影響はP_1D,M,χ値に依存して緩和時間と電子温度,密度の分布に現れやすいことがわかった.
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