TY - JOUR
AU1 - Tan, Yanqing
AU2 - Kong, Han
AU3 - Ma, Lianjie
AU4 - Xu, Chuang
AB - With the broad prospects of the electrohydraulic power steering system (EHPS) for the development and application in the field of commercial electric vehicles, noise study of EHPS has become a significant part of the research on vehicle noise, vibration, and harshness. In this study, with the essential component of EHPS—the electric hydraulic pump, which is the integration of oil pump, electric motor and controller, as the research object, the pulsed resonance noise was explored and noise reduction measures were proposed. Main research topics of this study included: (1) testing and analyzing the noise of the electric hydraulic pump to trace the source of noise; (2) analyzing the mechanism of noise generation, and proposing two noise reduction schemes, i.e., adding vibration damping pads to block vibration transmission and increasing the shell thickness to suppress surface vibration; and (3) manufacturing improved prototypes for different noise reduction schemes, and conducting further tests to verify the effectiveness of the proposed noise optimization schemes. The test results reveal that after adding the vibration damping pads, the vibration of the electric hydraulic pump increased instead of decreasing; and when the shell thickness of the electric hydraulic pump was increased from 8 to 12 mm, the noise in all directions was significantly reduced. The aforementioned findings indicate that increasing the shell thickness is an effective way to reduce the noise of the electric hydraulic pump. The present research can provide a reference for noise testing, optimization and control of the vehicle steering system.
TI - Testing and optimization of noise of an electrohydraulic power steering pump
JF - Journal of the Brazilian Society of Mechanical Sciences and Engineering
DO - 10.1007/s40430-021-03120-3
DA - 2021-08-04
UR - https://www.deepdyve.com/lp/springer-journals/testing-and-optimization-of-noise-of-an-electrohydraulic-power-aTeMw89Bd7
VL - 43
IS - 9
DP - DeepDyve
ER -