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:
Jun. 01, 2010
Filed:
Mar. 15, 2007
Applicants:
Akio Takemori, Kiryu, JP;
Yoshifumi Kuwano, Kiryu, JP;
Hiroaki Taka, Kiryu, JP;
Yoshitaka Iwaji, Hitachi, JP;
Inventors:
Akio Takemori, Kiryu, JP;
Yoshifumi Kuwano, Kiryu, JP;
Hiroaki Taka, Kiryu, JP;
Yoshitaka Iwaji, Hitachi, JP;
Assignee:
Japan Servo Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02P 8/22 (2006.01);
U.S. Cl.
CPC ...
Abstract
A stepping motor controlling device according to the present invention includes lead angle computing means which computes a lead angle according to the load torque current deviation of the stepping motor, adding means which adds an angle command to the lead angle to determine a winding exciting angle and voltage applying means which applies a voltage according to the winding exciting angle to the stepping motor.