Order Analysis of Noise and Pulsating Pressure of Vehicular Power Steering Pumps

This paper presents an objective evaluation using order analysis to quantify the noise levels generated by the pumps of the power steering system mounted on a test stand and operating under two pressure load conditions (5 and 50 bar) in the working range between 500 and 5.000 rpm. Also, under these conditions experimental tests are carried out to verify the influence of the output pulsating pressure of the pump on the noise and vibration measurements.