发明申请
- 专利标题: DRIVING A MULTI-PHASED MOTOR
- 专利标题(中): 驱动一台多功能电机
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申请号: US11847494申请日: 2007-08-30
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公开(公告)号: US20090058330A1公开(公告)日: 2009-03-05
- 发明人: Brian Dean Boling , Michael Ernest Dickeson
- 申请人: Brian Dean Boling , Michael Ernest Dickeson
- 申请人地址: US CA Scotts Valley
- 专利权人: SEAGATE TECHNOLOGY LLC
- 当前专利权人: SEAGATE TECHNOLOGY LLC
- 当前专利权人地址: US CA Scotts Valley
- 主分类号: H02P25/10
- IPC分类号: H02P25/10
摘要:
Motor control circuitry reduces the amount of driving voltage profile data stored in a profile datastore to completely rotate the phased motor. The stored driving voltage profile data defines driving voltages samples applied during a limited portion of the electrical period required to completely rotate the phased motor. For example, in one implementation, only one-sixth of the electrical period is defined and stored in a profile datastore. The driving voltage samples for another three-sixths of the electrical period are derived from this one-sixth profile (e.g., reversing, inverted, reversed and inverted), and the driving voltage samples for another two-sixths of the electrical period are based on saturated levels at the power supply voltage and a neutral voltage (e.g., ground). The described motor control circuitry can also provide improved torque at low power supply levels, particularly when saturated portions of the driving voltage profile exceed sixty degrees.
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