Engine Vibration And Semi-active Control Technology

In this paper, the present research and development of the engine vibrationcontrol is summarized. In theory, this paper analyzes energy distribution of the engine vibration and discusses the active global-state-feedback control systemand the partial-state-feedback control system, and presents the method in selecting the partial feedback states. At the same time, associated with one category of engine, it builds the mathematical model of the engine active control system, provides the LQ optimal control strategy and makes a simulation analysis. In addition, taking one engine mounts design into account, the paper investigates and compares some types of design schemes and shows that semi-active continuous variable damper is feasible and applicable. The numerical simulation results further proves that the continuous variable sky-hook damper is able to effectively isolate the engine vibration, so the damper has promising value in the engineering field...