Motor driving apparatus for controlling plurality of motors with less motor driving units than motors
US6344719B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 13, 2001 |
| Grant date | Feb 5, 2002 |
| Priority date | — |
| Expiry date | Feb 13, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P5/68
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.