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Engine Vibration Control Using Passive, Active, and Adaptive Hydraulic Mount Systems
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Abstract
Performance characteristics of passive, active, and broadband adaptive engine mounts are compared over a wide frequency range up to 250 Hz in the context of a quarter-vehicle heave model. The optimal damping coefficient of a rubber-metal mount is determined using random vibration theory. The small-scale active mount employs proportional-plus-integral control based on linear optimal control theory. The new adaptive hydraulic mount system implements an on-off damping control mode by using engine intake-manifold vacuum and a microprocessor-based solenoid valve controller. Through analytical methods, it is observed that this adaptive mount provides most desirable dynamic performance with regard to the engine-bounce control, shock absorption and vibration isolation performance requirements. Although technical prospects of the proposed adaptive system appear promising, in-situ performance needs to be evaluated.
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Citation
Kim, G. and Singh, R., "Engine Vibration Control Using Passive, Active, and Adaptive Hydraulic Mount Systems," SAE Technical Paper 932897, 1993, https://doi.org/10.4271/932897.Also In
References
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