基于声卡和LabVIEW的水润滑轴承摩擦噪声测试系统

Water-lubricated rubber bearings have good lubricating properties and environmental friendliness, but their noise issue under the low-speed and heavy load is urgently needed to be solved, and the test method and system is one of key to solve the problem. In the paper, a measurement and analysis system of friction-induced noise of the water-lubricated rubber bearings based on soundcard and LabVIEW is presented using the speech signal processing technology. And the details of the design technology of hard-ware and soft-ware have been introduced, including using the sound card as the data acquisition card and LabVIEW for the design of the signal acquisition and analysis system. The experiments of spiral groove water-lubricated rubber alloy bearings were performed under test condition and the results demonstrated that the measurement and analysis system can not only acquire and analyse the friction-induced noise signal accurately and clearly but also monitor the operation state of rubber bearings intuitively and the designed noise isolation device can also inhibit the external noise effectively.