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To describe the behaviors of vibration isolation, the dynamic models for three types of Passive Hydraulic Engine Mounts (PHEM) were developed in this paper respectively. The state equations were then introduced and solved by means of the Lumped-Parameter method and the Bond Graph procedure. Numerical results were presented for both low and high frequency responses. Then, comparative analyses were...
In this paper, a transient dynamic model is proposed for the hybrid electric vehicle (HEV) engine for the purpose of alleviation of high frequency oscillations in engine revolutions, which is extended to develop a digital governor providing a high fidelity estimation of rotary speed oscillation for hybrid vehicle engines. To damp speed oscillation, a speed governor is implemented for HEV engine speed...
A lumped parameter model is proposed for analysis of dynamic behaviours of a Passive Hydraulic Engine Mount (PHEM) with incorporation of inertia track and throttle, which is characterized by effective and efficient vibration isolation behaviours in the range of both low and high frequencies. The most of model parameters including volume compliance of throttle chamber, effective piston area, fluid...
Based on the decoupled principle, a non-incremental quadratic programming model for optimal control of reactive power flow in power systems is presented in this paper. In the model, the reactive powers through all lines are regarded as the unknown variables to be evaluated, as well as the transformer tap positions, generator terminal voltages and switchable injected reactive powers; and a characteristic...
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