发明授权
- 专利标题: BLDC motors
- 专利标题(中): BLDC电机
-
申请号: US12275066申请日: 2008-11-20
-
公开(公告)号: US08203296B2公开(公告)日: 2012-06-19
- 发明人: Hristo Hristov , Rumen Peev , Kalin Petrov
- 申请人: Hristo Hristov , Rumen Peev , Kalin Petrov
- 申请人地址: BE Leper
- 专利权人: Melexis NV
- 当前专利权人: Melexis NV
- 当前专利权人地址: BE Leper
- 代理机构: Leydig, Voit & Mayer, LLP
- 代理商 Gerald T. Gray
- 优先权: GB0722740.8 20071120
- 主分类号: H02P6/14
- IPC分类号: H02P6/14
摘要:
A 2-phase BLDC motor is driven by a trapezoidal waveform. For one-half of the motor rotation period T, the phase is driven by the trapezoidal waveform and for the other half-period, the coil remains undriven. An up down counter is operable to increment at a first frequency f1 and to decrement at a second frequency f2. Incrementing operation is initiated at the start of the driven period of the waveform and stopped at the start of the down slope of the waveform. Decrementing operation is initiated at the start of the down slope of the waveform and stopped at the end of the down slope. The ratio of frequencies f1:f2 is used to measure the relative duration of the slope to the driven period and is selected to mirror the desired ratio of slope duration:driven period duration.
公开/授权文献
- US20090134824A1 BLDC MOTORS 公开/授权日:2009-05-28