Method and system for evaluating and monitoring hydraulic pump noise levels
US6697741B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 31, 2002 |
| Grant date | Feb 24, 2004 |
| Priority date | — |
| Expiry date | Jan 31, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01H1/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and system for determining fluidborne noise characteristics of a fluid power pump. The system includes the pump, a reference pipe fluidly connected to a discharge of the pump, three pressure sensors disposed within the reference pipe at predetermined spacings from each other and the pump, first and second loading valves, and a calculating and analysis assembly. The loading valves are selectively and alternatingly actuated to pressurize fluid contained in the system. The calculating and analysis assembly receives signals from the pressure sensors and signals indicative of the rotational speed of the pump. The calculating and analysis assembly uses these signals, together with the known physical characteristics of the reference pipe and the system fluid, to determine the source flow ripple and internal impedance. Thereafter, the calculating and analysis assembly thereafter determines the level of the source flow ripple level, which corresponds to source fluidborne noise characteristics of the pump, based upon the calculated source flow ripple.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.