发明名称 |
Method and apparatus for controlling a motor in a mass storage device |
摘要 |
A method of detecting phase error between a phase current and a driving voltage includes generating a signal indicative of the phase current. The method includes identifying a time interval during which the signal indicative of the phase current is generally symmetric about a midpoint of the time interval when the phase error is approximately zero. The method further includes determining the extent to which the signal indicative of the phase current is symmetric about the midpoint of the time interval. Finally, in response to determining the extent to which the signal indicative of the phase current is symmetric, the method includes generating phase error information.
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申请公布号 |
US6163118(A) |
申请公布日期 |
2000.12.19 |
申请号 |
US19980197243 |
申请日期 |
1998.11.20 |
申请人 |
TEXAS INSTRUMENTS INCORPORATED |
发明人 |
CHEN, HAO;SWIZE, GREGORY;WHITE, BERTRAM JOHN |
分类号 |
H02P6/16;G11B19/28;H02P27/02;(IPC1-7):H02K23/00 |
主分类号 |
H02P6/16 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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