The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 30, 1994
Filed:
Aug. 09, 1991
Chan-Ming Chen, Hsinchu, TW;
Jia-Ruey Wu, Hsinchu, TW;
Chi-Maw Shieh, Hsinchu, TW;
Wen-Pin Chang, Hsinchu, TW;
Abstract
Disclosed is a method and device for automatic dynamic balancing operations on machine lines so as to compensate unbalance in a rotor. Vibration signals of the rotor obtained by a transducer and revolution signals generated by a revolution detector in reaction to the rotor during rotation are fed into a band pass filter and amplifier. The processed signals are then converted into digital signals by means of a digital dynamic balancing close-loop controller. The value and location of unbalance present in the rotor are calculated by a calculating unit. Based on the unbalance value and the speed of revolution of the rotor, whether a suitable amount of fluid is needed to be injected into compensation chambers in the rotor, which is coaxial with the rotor, to eliminate the unbalance of the rotor can be determined. This balancing operation is repeated automatically until the unbalance value is less than a predetermined tolerance value.