| 发明名称 |
ANGULAR FREQUENCY EXTRACTOR FOR CONTROLLING A BRUSHED DC MOTOR |
| 摘要 |
An apparatus includes a motor driver configured to drive a motor across a pair of input terminals to the motor and a current sense unit configured to sense the motor's electrical current amplitude. Further, an angular frequency extractor is operatively coupled to the motor driver and the current sense unit and configured to detect discontinuities in the motor's electrical current amplitude. The angular frequency extractor also is configured to determine a time period for one complete revolution of a rotor of the motor and to generate a feedback signal based on the determined period to control an angular frequency of the motor. The feedback signal may be used to adjust how the motor is being driven (e.g., to slow the motor down or speed it up). |
| 申请公布号 |
US2015229254(A1) |
申请公布日期 |
2015.08.13 |
| 申请号 |
US201514613937 |
申请日期 |
2015.02.04 |
| 申请人 |
TEXAS INSTRUMENTS INCORPORATED |
发明人 |
HERNANDEZ David;AMIDON Gregory Charles;BALDWIN David John;BECKHAM Brandon J. |
| 分类号 |
H02P7/00;G01R31/34 |
主分类号 |
H02P7/00 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. An apparatus, comprising:
a motor driver configured to drive a motor across a pair of input terminals to the motor; a current sense unit configured to sense the motor's electrical current amplitude; and an angular frequency extractor operatively coupled to the motor driver and the current sense unit and configured to detect discontinuities in the motor's electrical current amplitude and to determine a time period for one complete revolution of a rotor of the motor and to generate a feedback signal based on the determined period to control an angular frequency of the motor. |
| 地址 |
Dallas TX US |
