Research of Vibration Effects on a Hydraulic Valve in the Pressure Pulsation Spectrum Analysis

Abstract

This paper identifies mechanical vibrations occurring in the operating environment of hydraulic systems used in marine engineering. Particular attention was paid to the influence of periodic vibrations on changes in the amplitude-frequency spectrum in a marine hydraulic system. For the case of analysing the effect of vibration on changes in the pressure pulsation spectrum with a proportional directional valve, a modified mathematical model was used. Experimental results were presented and compared with the results obtained from the mathematical model. A way of limiting the transmission of vibrations to the directional control valve body was proposed.

Analysis of Properties and Macroscopic Defects of Metallic Bars, Pipes, and Strands through the Spectrum of Low-Frequency Excitations

“…Materials 2024, 17, x FOR PEER REVIEW 3 of 15 no expansion limits, so far. Recently, it has been shown that detailed studies of low-frequency vibrations can be very helpful in characterizing the performances of complex mechanical devices [19,20]. The remainder of the paper is structured as follows.…”

“…Our work also focuses on the general field of the application of resonances, a field that has known no expansion limits, so far. Recently, it has been shown that detailed studies of low-frequency vibrations can be very helpful in characterizing the performances of complex mechanical devices [19,20].…”

Influence of the Hydraulic Circuit Setup on the Dynamic Performance of an Axial Piston Pump by Numerical and Experimental Analysis

“…Using these functions, it is possible to derive the pressure spectrum, the velocity of the fluid flow, and the velocity of sound in the contained fluid. In a most recent study, Stosiak et al [41] addressed an interesting topic of external mechanical vibrations causing excitation to a directional control valve in a heavy-duty military vehicle. The main conclusion mentions that a cushion made of a material with a high stiffness and damping mounted between the casing and the centering spring can lead to reduction of the vibration on the valve spool.…”

Positioning Control Strategy of Hydraulic Support Pushing System in Fully Mechanized Coal Face

“…The above input limits make the positioning control of the hydraulic support pushing system based on the electrohydraulic directional control valve more difficult. The common positioning control system of the valve-controlled cylinder can be divided into high-speed switch valve, switch array control system [7][8][9], servo and proportional control system [10,11], electromagnetic directional valve, and electrohydraulic directional control valve control system according to the type of control element.…”