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		Jiangyan ZHANG,Xiaohong JIAO.[en_title][J].Control Theory and Technology,2008,6(1):69~73.[Copy]

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JiangyanZHANG,XiaohongJIAO
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Received:September 08, 2007

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Adaptive coordinated control of engine speed and battery charging voltage

Jiangyan ZHANG, Xiaohong JIAO

(Institute of Electrical Engineering, Yanshan University, Qinhuangdao Hebei 066004, China)

Abstract:

In this paper, the control problem of auxiliary power unit (APU) for hybrid electric vehicles is investigated.An adaptive controller is provided to achieve the coordinated control between the engine speed and the battery charging voltage. The proposed adaptive coordinated control laws for the throttle angle of the engine and the voltage of the powerconverter can guarantee not only the asymptotic tracking performance of the engine speed and the regulation of the battery charging voltage, but also the robust stability of the closed loop system under external load changes. Simulation results are given to verify the performance of the proposed adaptive controller.

Key words: Hybrid electric vehicles Auxiliary power units Engine speed Adaptive coordinated control Asymptotic tracking