Active Control Of Fluid Pulsation In Hydraulic Systems With Load Pressure Of Wide Variation

In this paper, a new control architecture is proposed to address the problem of fluid pulsation suppression under load pressure of wide variation. The opening of a servo valve is changed by a control signal, and a reverse pressure wave is generated to counteract the pressure pulsation. According to the characteristics of the hydraulic system pressure, this paper constructs a simple mean value predictor to estimate the pressure change. This paper adopts the FXLMS algorithm with secondary path building, and constructes an error signal to adjust the weights of control and building. This method simplifies the control architecture. Finally, the algorithm is verified by co-simulation with Amesim and simulink. The results show that the algorithm can achieve an average vibration reduction of more than 10dB and has good robustness.