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公开(公告)号：US5122715A
公开(公告)日：1992-06-16
申请号：US391609
申请日：1989-07-19
CPC分类号： H02P6/06 , H02P6/182 , Y02P80/116
摘要： A brushless motor driving device includes a plurality of motor driving coils and a plurality of driving transistors, coupled to the motor driving coils, for periodically supplying an electric power to the motor driving coils. A power supply switching circuit is provided for generating a power supply switching signal for driving the motor driving coils on the basis of a frequency signal corresponding to an oscillation frequency of a voltage controlled oscillator. A phase difference detector is provided for detecting a difference between the power supply switching signal and a counterelectromotive voltage generated in the motor driving coils during a period in which no electric power is supplied to the motor driving coils. The phase difference detected by the phase different detector circuit is used to control the oscillation frequency of the voltage controlled oscillator.
摘要翻译： PCT No.PCT / JP88 / 01169 Sec。 371日期：1989年7月19日 102（e）日期1989年7月19日PCT提交1988年11月18日PCT公布。 第WO89 / 05061号公报。 日本1989年6月1日。无刷电动机驱动装置包括多个电动机驱动线圈和多个驱动晶体管，耦合到电动机驱动线圈，用于周期性地向电动机驱动线圈提供电力。 提供电源切换电路，用于根据与压控振荡器的振荡频率对应的频率信号产生用于驱动电动机驱动线圈的电源切换信号。 提供了一种相位差检测器，用于在电动机驱动线圈没有供电的时段期间检测电源切换信号和在马达驱动线圈中产生的反电动势电压之间的差异。 由相位不同检测器电路检测的相位差用于控制压控振荡器的振荡频率。
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公开(公告)号：US4970445A
公开(公告)日：1990-11-13
申请号：US391608
申请日：1989-06-22
IPC分类号： H02P6/18
CPC分类号： H02P6/182
摘要： The present invention relates to a drive device for a brushless motor utilizing no position detector for detecting the position of a movable element of the motor.The drive device comprises a phase controlled loop for controlling an output of a voltage controlled oscillator (40) by supplying an electric power to motor driving coils (1, 2, 3), detecting the difference in phase between the power supply waveforms thereof and a counterrelectromotive force of the motor driving coils during a power supply interrupting period with the use of a phase difference detector (20) and inputting a detected phase difference signal to the voltage controlled oscillator (40), an oscillation frequency initializing means (70) and a driving transistor interrupting circuit (80).
摘要翻译： PCT No.PCT / JP88 / 00880 Sec。 371日期：1989年6月22日 102（e）日期1989年6月22日PCT提交1988年9月2日PCT公布。 公开号WO89 / 02186 日本特开1989年3月9日。无刷电动机的驱动装置技术领域本发明涉及一种无刷电动机的驱动装置，该驱动装置不使用位置检测器来检测电动机的可动元件的位置 驱动装置包括相位控制回路，用于通过向电动机驱动线圈（1,2,3）提供电力来控制电压控制振荡器（40）的输出，检测其电源波形之间的相位差和 振荡频率初始化装置（70）和振荡频率初始化装置（70）和振荡频率初始化装置（70）以及振荡频率初始化装置（70）和振荡频率初始化装置 驱动晶体管中断电路（80）。
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公开(公告)号：US4900993A
公开(公告)日：1990-02-13
申请号：US207527
申请日：1988-06-16
CPC分类号： H02P6/182 , H02P6/085 , Y02P80/116
摘要： A phase difference between a counter-electromotive voltage induced in a driving coil and a voltage which is applied to the driving coil is detected by comparison of a terminal voltage of the driving coil and a reference voltage. A frequency of a voltage-control oscillator which controls switching of the voltage applied to the driving coil is varied by an output signal made by the comparison, and the phase difference is controlled to be reduced to zero.
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公开(公告)号：US5402024A
公开(公告)日：1995-03-28
申请号：US41217
申请日：1993-03-31
申请人： Akihiko Watanabe , Sotomitsu Maeda , Hiroshi Dohi , Muneo Yamamoto , Yukio Honda , Hiromitsu Nakano , Masahiro Yasohara , Hisataka Kato
发明人： Akihiko Watanabe , Sotomitsu Maeda , Hiroshi Dohi , Muneo Yamamoto , Yukio Honda , Hiromitsu Nakano , Masahiro Yasohara , Hisataka Kato
CPC分类号： H02K1/2733
摘要： With a view to reduce vibrations generated by a motor and improve resistance to heat, reliability and vibration isolation properties without increasing the cost or the number of manufacturing steps in a rotor for a permanent-magnet motor, a rotor core is formed of an outer peripheral portion by which the permanent magnet is fixed, and a central portion by which a shaft is fixed, a clearance is provided between the outer peripheral portion and the central portion, and the outer peripheral portion is connected to the central portion by means of a plurality of fastening members. Thus, a rotor having excellent vibration isolation properties can be obtained. Since the rotor core is formed of laminated iron plates on which the outer peripheral portion, the central portion and the fastening members are all formed as one piece, resistance to heat, reliability and the vibration isolation properties can be enhanced without increasing the cost or the number of manufacturing steps.
摘要翻译： 为了减少电动机产生的振动，提高耐热性，可靠性和隔振性能，而不增加用于永磁电动机的转子的成本或制造步骤的数量，转子铁芯由外周 固定永磁体的部分和固定轴的中心部分，在外周部分和中心部分之间设置间隙，并且外周部分通过多个连接到中心部分 的紧固件。 因此，可以获得具有优异的隔振性能的转子。 由于转子铁芯由外周部分，中心部分和紧固部件全部形成为一体的层压铁板形成，因此可以在不增加成本的情况下提高耐热性，可靠性和隔振性能 制造步骤数量。
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公开(公告)号：US4780651A
公开(公告)日：1988-10-25
申请号：US49212
申请日：1987-05-13
CPC分类号： H02P6/06
摘要： A speed control apparatus for a motor, wherein the counter-electromotive voltage is detected with great precision even when the counter-electromotive voltage to be caused from the motor driving coils is small or the ambient temperature is changed. The voltages corresponding to the detection voltages are turned into speed signals. The emitter resistance of the driving transistor, which is the cause of the torque reduction, can be removed, and uneven rotation, uneven torque is reduced. The speed control apparatus provides a composite voltage of driving coil voltages that are converted by an inversion amplifier. The voltage corresponding to the composite voltage provides the speed signal. This voltage is transferred to the driving coils and precise speed control is produced without a reduction in the controllable maximum torque or the starting torque.
摘要翻译： 一种用于电动机的速度控制装置，其中即使当从电动机驱动线圈引起的反电动势电压较小或环境温度改变时，也以高精度检测反电动势电压。 与检测电压对应的电压变为速度信号。 可以消除作为转矩降低的原因的驱动晶体管的发射极电阻，并且不均匀旋转，不均匀的转矩降低。 速度控制装置提供由反相放大器转换的驱动线圈电压的复合电压。 对应于复合电压的电压提供速度信号。 该电压被传送到驱动线圈，并且在不降低可控最大转矩或起动转矩的情况下产生精确的速度控制。
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公开(公告)号：US6020715A
公开(公告)日：2000-02-01
申请号：US144017
申请日：1993-11-01
摘要： A motor driving power supplying section obtains an output voltage by switching-controlling a predetermined voltage outputted from a main power supply and smoothing a voltage thus switching-controlled. A driving transistor group includes a plurality of driving transistors, for supplying electric power based on the output voltage of the motor driving power supplying section to the motor driving coils of multiple phases. A commutation control section supplies conduction switching signals to the driving transistor group so as to switch successive conduction states of the motor driving coils. An output control section controls the output voltage of the motor driving power supplying section so that a collector-emitter voltage of at least one of the plurality of driving transistors included in the driving transistor group has a predetermined value. A torque control section controls conduction current intensity to the motor driving coils by controlling output currents of the plurality of driving transistors included in the driving transistor group.
摘要翻译： 电动机驱动电力供给部通过切换控制从主电源输出的预定电压并对由此切换控制的电压进行平滑而获得输出电压。 驱动晶体管组包括多个驱动晶体管，用于基于电动机驱动电力供给部的输出电压将电力提供给多相的电动机驱动线圈。 换向控制部分向驱动晶体管组提供导通开关信号，以切换马达驱动线圈的连续导通状态。 输出控制部分控制电动机驱动电力供给部的输出电压，使得驱动晶体管组中包含的多个驱动晶体管中的至少一个的集电极 - 发射极电压为规定值。 转矩控制部通过控制包括在驱动晶体管组中的多个驱动晶体管的输出电流来控制对电动机驱动线圈的导通电流强度。
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公开(公告)号：US5300866A
公开(公告)日：1994-04-05
申请号：US908813
申请日：1992-07-08
CPC分类号： H02P6/06
摘要： A drive apparatus for use in a brushless motor with a rotor and a drive coil assembly. The drive apparatus comprises an energization-state instruction circuit for generating an energization-state instruction signal instructing an energization state of the drive coil assembly on the basis of the position detection signal indicative of a position of the rotor and an energization switching circuit for outputting an energization switching signal to successively switch the energization state of the drive coil assembly in accordance with the energization-state instruction signal and a duty control signal. A power circuit is coupled to a direct-current voltage source and is responsive to the energization switching signal so as to energize the drive coil assembly by means of a direct-current voltage from the direct-current voltage source in accordance with the energization switching signal therefrom. A duty control circuit is responsive to a speed instruction signal from a speed instruction circuit and a motor speed signal from a speed detecting circuit for outputting the duty control signal to the energization switching circuit so as to control a duty ratio of the energization-state instruction signal on the basis of the duty control signal so as to output the energization switching signal to be inputted to the power circuit.
摘要翻译： 一种用于具有转子和驱动线圈组件的无刷电动机的驱动装置。 驱动装置包括：通电状态指示电路，用于根据表示转子位置的位置检测信号，产生指示驱动线圈组的通电状态的通电状态指示信号;以及通电切换电路， 通电切换信号，根据通电状态指示信号和占空比控制信号依次切换驱动线圈组的通电状态。 电源电路耦合到直流电压源并且响应于通电切换信号，以便根据通电切换信号通过来自直流电压源的直流电压来激励驱动线圈组件 由此。 占空比控制电路响应来自速度指令电路的速度指令信号和来自速度检测电路的电机速度信号，用于将占空比控制信号输出到通电切换电路，以便控制通电状态指令的占空比 信号，以输出要输入到电源电路的通电切换信号。
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公开(公告)号：US4983894A
公开(公告)日：1991-01-08
申请号：US469320
申请日：1990-01-24
摘要： In a system for driving a brushless motor having motor drive coils connected to respective drive transistors, voltages induced in the drive coils when the motor is rotating are continuously detected to produce energization switching signals to be applied to the drive transistors, thereby switching over energization of the drive coils, so that the motor can be continuously driven at optimum energization timing regardless of its rotational speed. Further, when a rotational direction command signal is applied to a forward-backward switching circuit to instruct the motor to rotate in the backward rotational direction while the motor is rotating in the forward rotational direction, torque of the opposite direction is produced to change the rotational direction of the motor. Further, separate-excitation timing pulse signals are used to sequentially switch over energization of the motor drive coils when the motor is not rotating or it is rotating at a very low speed, and hence voltages induced in the motor drive coils cannot be detected. As soon as the voltages induced in the drive coils have become able to be detected due to the rotation of the motor, self-excitation timing pulse signals are then used to sequentially switch over energization of the drive coils.
摘要翻译： 在用于驱动具有连接到各个驱动晶体管的电动机驱动线圈的无刷电动机的系统中，连续检测在电动机旋转时在驱动线圈中感应的电压，以产生施加到驱动晶体管的通电切换信号，由此切换 驱动线圈，使得电动机可以以最佳的通电时间连续地驱动，而不管其转速如何。 此外，当电动机沿正向旋转方向旋转时向旋转方向指令信号施加到前后切换电路以指示电动机沿向后旋转方向旋转时产生相反方向的转矩，以改变转动 电机方向。 此外，当电动机不旋转或者以非常低的速度旋转时，使用单独激励定时脉冲信号来依次切换电动机驱动线圈的通电，因此不能检测到在电动机驱动线圈中感应的电压。 一旦驱动线圈中感应的电压由于电动机的旋转变得能够被检测到，则自激定时脉冲信号然后被用于依次切换驱动线圈的通电。
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公开(公告)号：US4742281A
公开(公告)日：1988-05-03
申请号：US796407
申请日：1985-11-08
申请人： Hiromitsu Nakano , Mitsuru Yamane , Isao Yoshida
发明人： Hiromitsu Nakano , Mitsuru Yamane , Isao Yoshida
CPC分类号： H02P7/2885 , G05F3/30 , H02P7/2805 , Y10S323/901 , Y10S388/91 , Y10S388/934
摘要： A speed control apparatus for a DC motor operable with a low voltage battery has a reference voltage generating circuit capable of operable with a low voltage such as 1 V and is settable for output voltage and for temperature coefficient independently each other and has a differential amplifier which is operable with a very small input voltage and capable of operable with such a low voltage.
摘要翻译： 用于使用低电压电池可操作的直流电动机的速度控制装置具有能够以诸如1V的低电压操作的参考电压产生电路，并且可以独立地设置用于输出电压和温度系数，并且具有差分放大器 可以以非常小的输入电压工作并且能够以这样的低电压工作。
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公开(公告)号：US4189666A
公开(公告)日：1980-02-19
申请号：US904984
申请日：1978-05-11
申请人： Yoshio Tetsugu , Hiromitsu Nakano , Hiroshi Minakuchi , Tomio Oyama , Isao Yoshida , Mitsuharu Ota , Kazutsugu Kobayashi
发明人： Yoshio Tetsugu , Hiromitsu Nakano , Hiroshi Minakuchi , Tomio Oyama , Isao Yoshida , Mitsuharu Ota , Kazutsugu Kobayashi
CPC分类号： H02P7/2885 , Y10S388/93 , Y10S388/934
摘要： A speed control system for a d-c electric motor comprising a three-terminal space control IC to provide a constant voltage source having a negative internal resistance equal in absolute value to the internal resistance of the motor and thereby render the motor rotatable at a constant controlled speed. A resistance element having a positive temperature coefficient is used as an external circuit element for the IC so that rotation speed variations relative to load torque variations will be substantially constant despite variations in the ambient temperature.
摘要翻译： 一种用于直流电动机的速度控制系统，其包括三端子空间控制IC，以提供具有与电动机的内部电阻绝对值相等的负内部电阻的恒定电压源，从而使电动机以恒定的控制速度旋转 。 使用具有正温度系数的电阻元件作为用于IC的外部电路元件，使得相对于负载转矩变化的转速变化将随着环境温度的变化而基本恒定。
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