公开(公告)号：US20050067988A1

公开(公告)日：2005-03-31

申请号：US10673422

申请日：2003-09-30

申请人： Shou-Te Yu

发明人： Shou-Te Yu

IPC分类号： F04D27/00 ,  G05B5/00 ,  H02H7/08 ,  H02K9/06 ,  H02P1/00 ,  H02P5/00 ,  H02P7/00 ,  H02P7/288

CPC分类号： H02P7/2885

摘要： A motor driving system includes a power supply unit, a voltage-stabilizing unit, a signal-generating unit, a comparing unit, and a control unit. The power supply unit provides an input supply voltage to each other unit in the system. The voltage-stabilizing unit includes a voltage-stabilizing element and produces a constant voltage. The signal-generating unit generates an input signal, which varies with high and low levels of the input supply voltage. The comparing unit compares the constant voltage with the input signal to generate a comparison signal. The control unit controls a motor's rotating speed according to the comparison signal generated by the comparing unit. When the input supply voltage is low, a lowest rotating speed is set for the control unit to control the rotating of the motor.

公开(公告)号：US6081089A

公开(公告)日：2000-06-27

申请号：US67813

申请日：1998-04-28

申请人： Fernand Godon ,  Luc Horemans ,  Jan Zwijsen

发明人： Fernand Godon ,  Luc Horemans ,  Jan Zwijsen

IPC分类号： B41J19/78 ,  H02P6/06 ,  H02P6/16 ,  H02P7/288 ,  G05B11/01

CPC分类号： H02P6/06 ,  B41J19/78 ,  H02P6/17 ,  H02P7/2885

摘要： Drive system for driving a load (20), the drive system including a motor (10) coupled to a first shaft (11), a second shaft (19) coupled to the load, and an intermediate shaft (15) coupled to the first shaft and coupled to the second shaft. The angular position of the intermediate shaft is converted by a rotational encoder (25) into a drive signal for driving the motor.

摘要翻译： 用于驱动负载（20）的驱动系统，所述驱动系统包括联接到第一轴（11）的马达（10），联接到所述负载的第二轴（19）和耦合到所述第一轴 轴并联接到第二轴。 中间轴的角位置由旋转编码器（25）转换成用于驱动马达的驱动信号。

公开(公告)号：US5572106A

公开(公告)日：1996-11-05

申请号：US415501

申请日：1995-04-03

申请人： Motoaki Yamanashi ,  Yoshiaki Komatsu

发明人： Motoaki Yamanashi ,  Yoshiaki Komatsu

IPC分类号： D05B69/18 ,  H02P7/288 ,  H02P7/295 ,  H02K23/64 ,  H02P3/18

CPC分类号： H02P7/2885

摘要： An apparatus for driving an electric motor according to a given control target, including a control circuit which generates a control command signal corresponding to the control target, a chopping signal generator which generates a chopping signal based on the control command signal generated by the control circuit, a full-wave rectifier which rectifies an alternating current supplied from an alternating-current power supply, and supplies a full-wave rectified current to the motor, and a chopper which is connected in series to a series circuit including the motor and the full-wave rectifier and which chops the full-wave rectified current supplied to the motor according to the chopping signal generated by the chopping signal generator.

摘要翻译： 一种用于根据给定的控制目标驱动电动机的装置，包括产生与控制目标相对应的控制命令信号的控制电路，斩波信号发生器，其基于由控制电路产生的控制命令信号产生斩波信号 全波整流器，对由交流电源供给的交流电进行整流，向电动机供给全波整流电流;以及斩波器，串联连接到包括电动机和充满电的串联电路 并且根据由斩波信号发生器产生的斩波信号，斩波提供给电动机的全波整流电流。

公开(公告)号：US4494057A

公开(公告)日：1985-01-15

申请号：US446318

申请日：1982-12-02

申请人： Toshihiro Hotta

发明人： Toshihiro Hotta

IPC分类号： H02P7/288 ,  G05B5/00

CPC分类号： H02P7/2885 ,  Y10S388/902 ,  Y10S388/903

摘要： A speed control system for small medical motors. The system comprises a drive voltage regulation circuit, a current detection circuit which generates a detection signal in accordance with motor current, a voltage detection circuit which generates a detection signal in accordance with motor voltage, and a speed control circuit which controls the drive voltage regulation circuit in accordance with the detection signals of both detection circuits. With this system, the detection signal of the current detection circuit is positive-fed back, and the detection signal of the voltage detection circuit is negative-fed back to the speed control circuit to keep motor speed constant by effectively coping with abrupt load fluctuation.

摘要翻译： 小型医疗电机的速度控制系统。 该系统包括驱动电压调节电路，根据电动机电流产生检测信号的电流检测电路，根据电动机电压产生检测信号的电压检测电路和控制驱动电压调节的速度控制电路 电路根据两个检测电路的检测信号。 利用该系统，电流检测电路的检测信号是反馈的，电压检测电路的检测信号被反馈回速度控制电路，通过有效地应对突然的负载波动来保持电机的转速恒定。

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。

公开(公告)号：US4143288A

公开(公告)日：1979-03-06

申请号：US731719

申请日：1976-10-12

申请人： Masaaki Sato

发明人： Masaaki Sato

IPC分类号： H02K7/04 ,  H02K23/54 ,  H02K23/56 ,  H02P7/288

CPC分类号： H02P7/2885 ,  H02K23/54 ,  H02K23/56 ,  H02K7/04

摘要： A coreless motor comprises a motor housing having a bearing, a rotor mounted within the housing, rotatably supported within the bearing and having a plurality of coils constituting a pancake coil, a permanent magnet stator mounted within the housing and disposed opposite to the rotor, in which the stator is arranged opposite to an effective coil section of the pancake coil and thus the rotor, and an annular spacing is formed opposite to an outer peripheral portion other than the effective coil section of the rotor so that a balance adjusting member for the rotor as well as an electrical part associated with the coreless motor can be provided in the annular spacing within the motor housing.

公开(公告)号：US4112340A

公开(公告)日：1978-09-05

申请号：US778256

申请日：1977-03-16

申请人： Graham John Clarke

发明人： Graham John Clarke

IPC分类号： H02K23/68 ,  H02P7/288 ,  H02K27/20

CPC分类号： H02K23/68 ,  H02P7/2885 ,  Y10S388/91

摘要： A manually rotatable control knob is coupled to a d.c. ironless motor which maintains rotation of the knob once it is initially spun by hand. The initial back e.m.f. of the motor is sensed and is used via a feedback loop having a particular time constant to determine the subsequent rotational speed of the knob. By correctly profiling the time constant the inertial effect of a heavy flywheel can be simulated.

摘要翻译： 手动旋转的控制旋钮与直流 无铁电机一旦手动旋转就保持旋钮旋转。 最初的e.m.f. 并且经由具有特定时间常数的反馈回路使用以确定旋钮的随后旋转速度。 通过正确地分析时间常数，可以模拟重型飞轮的惯性效应。

公开(公告)号：US3936711A

公开(公告)日：1976-02-03

申请号：US401722

申请日：1973-09-28

申请人： Michael J. Gay

发明人： Michael J. Gay

IPC分类号： H02P7/288 ,  H02P5/36 ,  H02P5/06

CPC分类号： H02P7/2885 ,  Y10S388/903 ,  Y10S388/934

摘要： There is disclosed a motor speed control circuit for use in battery-powered tape recorders, tape players and record players in which the motor speed is made independent of power supply voltage swings, temperature and loading. The circuit is comprised of three sections including a discriminator-comparator section, a protection circuit and an output circuit. The discriminator-comparator circuit provides that the control signal to the motor be independent of power supply variations. A tachometer signal of an AC nature is coupled into the discriminator-comparator circuit which generates a pulsed current. The number of current pulses generated over a given time interval corresponds to the frequency of the tachometer signal. These pulses are subtracted from a reference current which difference is integrated, with the integrated current difference indicating the difference in speed of the motor between the desired speed and the actual speed. The tachometer signal is fed directly to the discriminator-comparator without the necessity of providing pulse-shaping circuits. The output circuit converts this difference current to a variable voltage across the motor to control its speed. This conversion from a current drive to a voltage drive is accomplished in a common-emitter configuration such that the drive circuitry does not drop the voltage applied to the motor by any significant extent. The protection circuit utilizes current-limiting circuitry which is independent of supply voltage to provide overload protection and also to prevent overheating of the motor speed control circuit by limiting the current to the circuit either during overload or when a predetermined temperature has been exceeded.

摘要翻译： 公开了一种电动机速度控制电路，其用于电池供电的磁带录音机，磁带播放器和记录播放器，其中电动机速度独立于电源电压摆幅，温度和负载。 该电路由三个部分组成，包括鉴别器 - 比较器部分，保护电路和输出电路。 鉴别器 - 比较器电路提供到电动机的控制信号不依赖于电源变化。 AC特性的转速计信号被耦合到产生脉冲电流的鉴频器 - 比较器电路中。 在给定时间间隔内产生的电流脉冲数对应于转速计信号的频率。 这些脉冲从参考电流中减去，该差值被积分，积分电流差表示电机在所需速度和实际速度之间的差值。 转速计信号直接馈送到鉴频器 - 比较器，而不需要提供脉冲整形电路。 输出电路将该差分电流转换成电机两端的可变电压，以控制其速度。 从当前驱动器到电压驱动器的这种转换在共发射极配置中实现，使得驱动电路不会以任何显着的程度降低施加到电动机的电压。 保护电路利用限流电路，其独立于电源电压以提供过载保护，并且还通过在过载期间或超过预定温度时限制电流的电流来防止电动机速度控制电路的过热。

公开(公告)号：US3931557A

公开(公告)日：1976-01-06

申请号：US523211

申请日：1974-11-13

申请人： David W. Osburn

发明人： David W. Osburn

IPC分类号： H02H7/093 ,  H02P7/288 ,  H02P7/74

CPC分类号： H02P7/2885 ,  H02H7/093

摘要： A series of electrical signals of a frequency directly proportional to the speed of a motor controlled by a speed control circuit of the type which completes an energizing circuit for the motor through the current carrying electrodes of a switching transistor is generated. These signals are employed to produce a direct current reference potential signal which increases rapidly in magnitude when the motor becomes stalled. The reference potential signal is applied across the series combination of a Zener diode and the base-emitter electrodes of an NPN transistor for supplying base-emitter drive current to the transistor when the potential level thereof reaches a magnitude equal to the inverse breakdown potential of the Zener diode. The collector-emitter electrodes of the NPN transistor are connected in circuit with the motor speed control circuit in such a manner that the control circuit switching transistor is maintained not conductive while base-emitter drive current is supplied to the NPN transistor.

摘要翻译： 产生与通过开关晶体管的载流电极完成用于电动机的激励电路的类型的速度控制电路控制的电动机的速度成正比的频率的一系列电信号。 这些信号用于产生直流电参考电位信号，当直流电机停止时，其直接增加幅度。 参考电位信号施加在齐纳二极管和NPN晶体管的基极 - 发射极电极的串联组合之间，用于当晶体管的电位电平达到等于其的击穿电位的幅度时，向晶体管提供基极 - 发射极驱动电流 齐纳二极管。 NPN晶体管的集电极 - 发射极电极与电动机速度控制电路连接，使得控制电路开关晶体管保持不导通，同时将基极 - 发射极驱动电流提供给NPN晶体管。

公开(公告)号：US3906890A

公开(公告)日：1975-09-23

申请号：US36343373

申请日：1973-05-24

申请人： CORNING GLASS WORKS

发明人： AMOS LYNN G ,  BACUS JAMES W ,  BEATY ROBERT C ,  ROGERS CHARLES H

IPC分类号： G01N33/48 ,  B04B13/00 ,  G01N1/28 ,  G01N33/483 ,  H02P7/288 ,  B04B9/10 ,  G02B21/34

CPC分类号： H02P7/2885 ,  G01N1/2813 ,  G01N2001/2846

摘要： In the preparation of blood films for microscopic examination a slide spins in a centrifuge for a time which is a function of the red blood cell concentration of the blood. A drive circuit controls the time of spinning of a slide centrifuge. A variable control for the centrifuge motor includes a manual adjustment which is adjustable across a scale labeled as a function of the percent hematocrit of the blood.