THE VIBRATION ACTIVE CONTROL ON THE FLUID BORNE NOISE

摘要

Vibration is the vital problem in the dynamic design of the aircraft power supply system, which is correlation with safty and performance of the hydraulic system. The conventional passive absorber can not adapt the variable work conditions, whearas the hydraulic systems of aircraft are developing toward high pressure, large power and becoming more complex. This paper presented a vibration active control method to reduce the vibrations of fluid power supply and pipeline systems, which is of adaptive and robust aganist disturbance, and can keep the vibration minmum under variable speed and load. This paper illustrated the theory and application of vibration active control of fluid power supply and pipeline systems in detail. The multi-layer PZT is taken as the driver which is of characteristics of large force output, high frequency bandwith and small volume. The auto optimum control method is adopted, which can adjust control parameters at any time to aganist the disturbance.