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There have been disputes on the financial crisis upon the auto market in 2009.An expert held that the growth rate could stay at 5 percent. We do not have to argue whether the judgment is correct.There has been phi- losophy between crisis and opportunities. And if we adopt the logic in analyzing the sales networks,some detailed coun- termeasures can be worked out.  相似文献   
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Optimal Control of Four Wheel Steering Vehicle   总被引:4,自引:0,他引:4  
This paper derives a method of controlling four wheel steering using optimal control theory. The purpose of control is to minimize the sideslip angle at the center of gravity. The control method feeds forward the steering wheel angle and feeds back the yaw velocity and the sideslip angle to the front and rear wheel angles. Theoretical studies show that the sideslip angle is reduced to zero even in the transient state, and that the understeer characteristic and frequency response can be changed regardless of the vehicle static margin. This Paper also examines various characteristics of the influence of the side force nonlinearities of tires and crosswinds.  相似文献   
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AFFECT The global auto market is fighting against the financial crisis,making the competition tougher.Major auto businesses in the world are suffering a toughest time since World WarⅡ.American Big Three is awaiting the warm hands from their government.Major Japan-based car makers,in-  相似文献   
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