发明授权
- 专利标题： Speed control mechanism for a d.c. electric motor
- 专利标题（中）： 直流电机的速度控制机制
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申请号： US3657624D申请日： 1970-09-21
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公开(公告)号： US3657624A公开(公告)日： 1972-04-18
- 发明人: NAGANO MASAHIKO
- 申请人： AKAI ELECTRIC
- 专利权人： Akai Electric
- 当前专利权人： Akai Electric
- 优先权： JP7442869 1969-09-19
- 主分类号： H02P7/29
- IPC分类号： H02P7/29 ; H02P5/16
摘要：
The speed controller includes a first pulse generator which operates in response to a motor revolution pickup head to produce a sawtooth pulse with the pulse interval being proportional to the speed of the motor and a second pulse generator for producing a series of pulses having a constant time lag relative to a certain preceding one of said sawtooth pulses. The combined pulses produce a control signal pulse series for control of the motor current.