发明名称 |
Control of a brushless motor |
摘要 |
The invention provides a method for controlling a brushless motor, with windings connected in star ('wye') formation, including the steps of periodically applying a supply voltage between first and second windings, detecting the presence of a current in a third winding, and an instant of cessation of that current, monitoring the value of a back emf induced in the third winding and detecting a zero crossing point of the back emf, timing a predetermined delay from the zero crossing point, and after the end of the delay, applying the supply voltage to other windings. The invention also provides a method for use with motors having windings connected in delta formation.
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申请公布号 |
US5859520(A) |
申请公布日期 |
1999.01.12 |
申请号 |
US19970827747 |
申请日期 |
1997.04.10 |
申请人 |
SGS-THOMSON MICROELECTRONICS S.A. |
发明人 |
BOURGEOIS, JEAN-MARIE;CHARRETON, JEAN-MARIE;GUILLEMIN, PIERRE;MAURICE, BRUNO |
分类号 |
H02P6/14;H02P6/18;(IPC1-7):H02P5/28 |
主分类号 |
H02P6/14 |
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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