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2. 发明授权

US4350937A Motor speed control device for DC motor 失效
标题翻译：直流电机电机调速装置
公开(公告)号：US4350937A
公开(公告)日：1982-09-21
申请号：US174429
申请日：1980-08-01
申请人： Kiyoshi Miyazaki , Tsuneto Takeuchi , Jinichi Ito , Hiroo Ashibe
发明人： Kiyoshi Miyazaki , Tsuneto Takeuchi , Jinichi Ito , Hiroo Ashibe
IPC分类号： H02P7/288 , H02P5/16
CPC分类号： H02P7/2885 , Y10S388/934
摘要： A motor speed control device for a small DC motor in which the speed of rotation of the motor is maintained stable during ambient temperature changes and changes in the load applied to the motor. A temperature compensation resistor is coupled in series with a voltage divider circuit and the combination thereof coupled across the motor. A motor control circuit is provided having first through fourth control terminals. The first control terminal is coupled to the junction between the temperature compensation resistor and the voltage divider circuit, the second control terminal to the voltage division point, the third control terminal to the junction between the voltage divider circuit and the motor, and the fourth control terminal is coupled to ground. The motor control circuit includes an error detecting circuit having inputs coupled to the first and second control terminals with a voltage reference source coupled in series with the first input terminal to the error detecting circuit. The output of the error detecting circuit drives both shunt transistors coupled between the first and fourth control terminals and a drive transistor means coupled between the first and fourth control terminals.
摘要翻译：一种用于小直流电动机的电动机速度控制装置，其中电动机的转速在环境温度变化和施加到电动机的负载变化时保持稳定。温度补偿电阻器与分压器电路串联耦合，并且其组合耦合在电动机两端。提供具有第一至第四控制端的电动机控制电路。第一控制端子耦合到温度补偿电阻器和分压器电路之间的接点，第二控制端子连接到分压点，第三控制端子连接到分压器电路和电动机之间的连接点，以及第四控制端子终端耦合到地面。马达控制电路包括误差检测电路，其具有与第一和第二控制端子耦合的输入，其具有与第一输入端串联耦合到误差检测电路的电压参考源。误差检测电路的输出驱动耦合在第一和第四控制端之间的分流晶体管和耦合在第一和第四控制端之间的驱动晶体管装置。

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