发明名称 |
Sensorless speed control method of high speed motor |
摘要 |
A sensorless speed control method of a high speed motor utilizing a reverse electromotive force comprises the steps of: adjusting to 50% a positive duty of rectangular waves generated from a reverse electromotive force signal of the high speed motor after accelerating the high speed motor in an accelerated speed mode to a mode switch RPM (first duty adjusting step); measuring a pulse difference between a rectangular wave edge and a synchronous signal when a voltage is adjusted to allow an ideal current waveform to be formed, thereby setting up a sensorless mode switch condition; utilizing the pulse difference measured in the switch condition set-up step to switch the high speed motor from an accelerated mode to a sensorless mode; and switching the high speed motor at the mode switch step to sensorless mode and increasing the RPM of the high speed motor to a high speed to thereby adjust a positive duty of the rectangular wave. There is an advantage of the inventive method in that the high speed motor is accelerated to switched RPM, a positive duty of a rectangular wave is adjusted at 50% and the high speed motor is switched from switched RPM to sensorless mode to raise the RPM to a high speed and to adjust the positive duty of the rectangular wave to 50%, thereby enabling stable motor control at high speed and a sensorless mode switch.
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申请公布号 |
US6163119(A) |
申请公布日期 |
2000.12.19 |
申请号 |
US19990344127 |
申请日期 |
1999.06.24 |
申请人 |
SAMSUNG ELECTRONICS CO., LTD. |
发明人 |
JEONG, MOON-JONG |
分类号 |
H02P29/00;H02P6/06;H02P6/18;H02P6/20;(IPC1-7):H02P7/06 |
主分类号 |
H02P29/00 |
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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