Measuring and testing – Rotor unbalance – Dynamic
Patent
1993-05-03
1994-10-11
Noland, Thomas P.
Measuring and testing
Rotor unbalance
Dynamic
73460, G01M 100
Patent
active
053536401
ABSTRACT:
An air-jet driven dynamic balance test apparatus for testing the dynamic balance of minrotors with minimum interference from external vibration noise. The dynamic balance test apparatus comprise a resilient supporting steel sheet having a horizontal bottom portion fastened to a base and an elongated upright body portion extended upwardly from the horizontal bottom portion to carry the sample to be tested. An air-jet generating device is provided to produce a continuous stream of compressed air for rotating the sample about its central axis. The resilient supporting steel sheet contains a resilient section for increasing sensitivity of said test apparatus. The resilient supporting steel sheet contains a resilient section, which can be the resilient steel sheet itself or in the form of a row of through holes or a corrugated section. A detector is mounted on the resilient supporting steel sheet to detect the vibration as the sample is being rotated during testing. An electromagnetic valve and a pressure regulating valve connected to an I/O interface of a master computer can be provided to automatically regulate the pressure of the continuous stream of the compressed air so as to control the revolving speed of the sample being tested at a predetermined constant rotation speed.
REFERENCES:
patent: 4467649 (1984-08-01), Mueller
patent: 4543825 (1985-10-01), Schonfeld
patent: 5067349 (1991-11-01), Hirchert
Chen Chang-Ming
Chen Shih-Chou
Jiang Wen-Wang
Industrial Technology Research Institute
Liauh W. Wayne
Noland Thomas P.
Oda Christine K.
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