Efficient active control of fluid borne pulsation in hydraulic piping systems

摘要

With the development of the hydraulic system of higher pressure and power, the fluid borne pulsation in pipelines becomes extremely harmful to the whole system. Therefore, the control of fluid borne pulsation is very significant for improving the performance of practical hydraulic systems. The traditional active control methods of fluid borne pulsation were found to be effective, while the existing weakness is model-based with huge computational consumption and poor robustness. A novel active control method is proposed here, using efficient gradient descent algorithm for parametric optimization. A fast servo valve is utilized as the actuator in the bypass fluid line. Both numerical and experimental verification are carried out. More than 70% attenuation of pressure peaks can be obtained in the simulation, and experiments on a practical hydraulic system achieve about 35% pulsation attenuation. The performance on computation efficiency is also good compared with conventional methods, which means the present control method is effective and efficient.