发明名称 |
A DIGITAL SPEED CONTROL DEVICE FOR A MOTOR |
摘要 |
A digital control system is provided to regulate the speed of a brushless DC motor via pulse-width modulation. Digital counters are used to measure the difference between the time for a motor revolution and a reference time. This time difference is in turn used to control the time until the application of power during a fixed period. A motor speed decrease increases the difference in time between a motor revolution and the reference time. This decreases the power pulse delay time and results in an increased power-on time to bring the motor back up to nominal speed. |
申请公布号 |
EP0061824(B1) |
申请公布日期 |
1986.05.07 |
申请号 |
EP19820300383 |
申请日期 |
1982.01.26 |
申请人 |
MAGNETIC PERIPHERALS INC. |
发明人 |
ELLIOTT, MARK LOWELL |
分类号 |
H02P6/06;H02P6/08;H02P23/00 |
主分类号 |
H02P6/06 |
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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