基于噪声声强最弱的泵控压机卸压特性研究

ccording to the problem of the pressure-relief shock of the hydraulic system of pump-controlled press,this paper used the method of power bond graph to study. Firstly, the model of the power bond graph of RKP pumps and other components were established, and the model of power bond graph of pump-controlled system which the RKP pump as the main control unit was established. The theoretical pressure-relief curve based on the weakest noise intensity was deduced, which has been proved by simulations and experimental results. The results show the simulation curve and actual curve based on bond graph theory model agree well, and has the effect of pressure-relief better. Finally, a conclusion that the theoretical pressure-relief curve achieved the best pressure-relief characteristics was drew.