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. 05, 2002
Filed:
Feb. 13, 2001
Ken Shibazaki, Miyagi-ken, JP;
Masaaki Tanaka, Miyagi-ken, JP;
Toshiyuki Hoshi, Lake Orion, MI (US);
Satoshi Terashita, Miyagi-ken, JP;
Ken Mizuta, Miyagi-ken, JP;
Alps Electric Co., Ltd., Tokyo, JP;
Abstract
The motor driving apparatus comprises a plurality of motors for displacing the position of the control object member, semiconductor switch pairs, a plurality of motor driving units for connecting the motors to the power supply and a control unit for ON/OFF controlling the semiconductor switch pairs. The motors form two sets of motors with each set being formed of two motors. One end of the motors and forming each set is connected to the common motor driving unit having the semiconductor switch pair and the other end of the motors and forming each set is connected to the motor driving units having the semiconductor switch pairs in each set. When the motors of each set are driven simultaneously, the control unit turns ON and OFF two semiconductor switch pairs and drives the motors of each set on the time division basis to provide inverse output polarities of the two semiconductor switch pairs connected to the motors of each set. Thereby there is provided a low price motor driving apparatus that has reduced the total number of motor driving units using the motor driving units having the semiconductor switch pairs.