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:
May. 30, 2006
Filed:
Oct. 01, 2003
Hiroaki Taka, Kiryu, JP;
Yoshifumi Kuwano, Kiryu, JP;
Akio Takemori, Kiryu, JP;
Yukinari Takahashi, Kiryu, JP;
Hiroaki Taka, Kiryu, JP;
Yoshifumi Kuwano, Kiryu, JP;
Akio Takemori, Kiryu, JP;
Yukinari Takahashi, Kiryu, JP;
Japan Servo.Co., Ltd., Tokyo, JP;
Abstract
Disclosed is a driving device for a motor such as a stepping motor etc. for controlling an angle and a speed of the motor, wherein the driving device comprises exciting current detectors for detecting exciting currents of motor windings of the motor, an exciting current amplitude computation means for computing an exciting current amplitude value or the square of the exciting current amplitude value from exciting current detection values detected by the exciting current detectors, and a voltage impression unit for impressing voltages at values corresponding to a deviation value of the exciting current amplitude value and the current amplitude command or a deviation value of the square of the exciting current amplitude value and the square of the current amplitude command to the motor windings.