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:
Feb. 18, 2014
Filed:
Jul. 29, 2011
Paul Chang, Taichung, TW;
Tsair-rong Chen, Hemei Township, Changhua County, TW;
Jeen-sheen Row, Miaoli, TW;
Chin-sheng LU, Taichung, TW;
Paul Chang, Taichung, TW;
Tsair-Rong Chen, Hemei Township, Changhua County, TW;
Jeen-Sheen Row, Miaoli, TW;
Chin-Sheng Lu, Taichung, TW;
Buffalo Machinery Co., Ltd, Taichung, TW;
The Department of Electrical Engineering National Chang-Hua University of Education, Changhua, Changhua County, TW;
Abstract
In a method and module for controlling rotation of a motorized spindle driven by a driving unit, a sensing unit senses vibration of the spindle and generates a voltage signal corresponding to the vibration of the spindle. A processing unit receives the voltage signal from the sensing unit, generates an adjusting ratio equal to a reference voltage corresponding to a predetermined vibration level of the spindle by the voltage signal upon detecting that the voltage signal is greater than the reference voltage and is less than a predetermined threshold voltage that is greater than the reference voltage, and outputs a control signal corresponding to the adjusting ratio to the driving unit such that the driving unit reduces a rotation speed of the spindle by the adjusting ratio in response to the control signal from the processing unit.