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. 04, 1998
Filed:
Jun. 19, 1996
Guan-Chyun Hsieh, Taipei Hsien, TW;
National Science Council, Taipei, TW;
Abstract
A frequency-locked stepping position control servo (FLSPS) system for driving a stepping motor. It essentially comprises a means for driving the stepping motor to move an object toward a target according to a driving signal, a means for detecting position of the object, a position-to-frequency converter to feedback the position information and a microprocessor-based slope-varied frequency-controlled oscillator (.mu.P-SVFCO) to generate the driving frequency. The .mu.P-SVFCO includes a microprocessor to ease the implementation of the control law and utilizes the slope-varied technique to adaptively pump the pulse train frequency of the driving signal. In addition, a one-bit clock is provided to dynamically maintain the position of the object when the target position is reached. The FLSPS system is capable of achieving similar system acquisition times for different target commands among a wide-range of positioning control commands.