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3篇 您的检索式：作者名="Cheolheui Han"

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		题名	作者	年代	出处	被引量
	1	Optimal Control of a Mackerel-Mimicking Robot for Energy Efficient Trajectory Tracking显示文摘A robotic fish, BASEMACK1, is designed and fabricated by mimicking the shape of a live mackerel. Three DC servo-motors are serially linked together and actuated to mimic the mackerel's Carangiform motion. Hydrodynamic charac- teristics of a fish-mimetic test model are experimentally identified and utilized in order to numerically simulate fish swimming. The discrete set of kinematic and dynamic parameters are obtained by considering required horizontal and lateral forces and minimum energy consumption. Using the optimized parameter set, optimal control of the robot is studied.	Seunghee Lee Jounghyun Park Cheolheui Han	2007	Journal of Bionic Engineering2007，4，4：	6
	2	Investigation of Unsteady Aerodynamic Characteristics of a Seagull Wing in Level Flight显示文摘Unsteady aerodynamic characteristics of a seagull wing in level flight are investigated using a boundary element method.Anew no-penetration boundary condition is imposed on the surface of the wing by considering its deformation.The geometry andkinematics of the seagull wing are reproduced using the functions and data in the previously published literature.The proposedmethod is validated by comparing the computed results with the published data in the literature.The unsteady aerodynamicscharacteristics of the seagull wing are investigated by changing flapping frequency and advance ratio.It is found that the peakvalues of aerodynamic coefficients increase with the flapping frequency.The thrust and drag generations are complicatedfunctions of frequency and wing stroke motions.The lift is inversely proportional to the advance ratio.The effects of severalflapping modes on the lift and induced drag(or thrust)generation are also investigated.Among three single modes(flapping,folding and lead & lag),flapping generates the largest lift and can produce thrust alone.For three combined modes,both flapping/foldingand flapping/lead & lag can produce lift and thrust larger than the flapping-alone mode can.Folding is shown toincrease thrust when combined with flapping,whereas lead & lag has an effect of increasing the lift when also combined withflapping.When three modes are combined together,the bird can obtain the largest lift among the investigated modes.Eventhough the proposed method is limited to the inviscid flow assumption,it is believed that this method can be used to the designof flapping micro aerial vehicle.	Cheolheui Han	2009	Journal of Bionic Engineering2009，6，4：	1
	3	Steady aerodynamic characteristics of a wing flying over a nonplanar ground surface Part I: Rail显示文摘	Cheolheui Han Hakki Kim Jinsoo Cho	2006	Journal of Mechanical Science and Technology2006，，7：	1

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