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公开(公告)号：US5656910A
公开(公告)日：1997-08-12
申请号：US491925
申请日：1995-08-28
申请人： Ricardo Erckert
发明人： Ricardo Erckert
摘要： A driver circuit for an electronically commutated electric motor, in particular stepping motor, having one full bridge circuit (I, II) per motor winding (L1, L2), a current sensor resistor (R), a measured value storage device (C5) and a regulator circuit (OP1-OP5) for regulating, during part of the driver phases, the total current flowing through the driver circuit in such a way that this current matches a total current value flowing outside the regulating phases and stored in the storage circuit (C5), in order to prevent alternating components in the total current fed via the supply voltage lines.
摘要翻译： PCT No.PCT / EP94 / 03822 Sec。 371日期：1995年8月28日 102（e）日期1995年8月28日PCT 1994年11月18日PCT公布。 公开号WO95 / 14327 日期1995年5月26日一种用于电子换向电动机，特别是步进电机的驱动电路，每个电动机绕组（L1，L2）具有一个全桥电路（I，II），电流传感器电阻器（R），测量值存储 装置（C5）和调节器电路（OP1-OP5），用于在部分驱动器相位期间调节流过驱动器电路的总电流，使得该电流与流过调节相位的总电流值匹配并存储 在存储电路（C5）中，以防止通过电源电压线馈送的总电流中的交替分量。
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公开(公告)号：US5648710A
公开(公告)日：1997-07-15
申请号：US557271
申请日：1995-11-14
申请人： Tetsuhito Ikeda
发明人： Tetsuhito Ikeda
摘要： A drive control system for a stepping motor prevents erroneous operation of a motor drive circuit due to the lack of coincidence between the logic level and an analog 0 voltage. This is accomplished by inhibiting an electric current from flowing by closing a gate circuit until a reference voltage for specifying a drive current into an input terminal reaches a specified voltage with respect to the ground potential, regardless of the output from a comparator to the terminal.
摘要翻译： 用于步进电机的驱动控制系统由于逻辑电平和模拟0电压之间不一致而防止电动机驱动电路的错误操作。 这是通过关闭栅极电路来阻止电流流动，直到用于指定到输入端子的驱动电流的参考电压相对于地电位达到指定电压来实现的，而不管比较器到端子的输出。
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33.发明授权
公开(公告)号：US4434392A
公开(公告)日：1984-02-28
申请号：US281116
申请日：1981-07-07
申请人： Georg Brasseur
发明人： Georg Brasseur
摘要： In a circuit arrangement for controlling the commutation of a stepping motor, each phase winding (1) of which is connected to the detector diagonal of a bridge circuit consisting of four switching transistors (2, 3, 4, 5), a capacitor (17) is connected across each phase winding (1) and a decoupling diode (13, 14) is included in each of two arms of the bridge circuit. In case of a bridge circuit comprising complementary transistors (2, 4; 3, 5), whose emitters are connected to the terminals (6, 7) of the supply voltage (U.sub.o) and whose collectors are interconnected in pairs, the decoupling diodes (13, 14) are included in the collector leads of the transistors (2, 4) of one type of conductivity, and protective diodes (15, 16) are connected in parallel to the collector-emitter path of the transistors (3, 5) of the other type of conductivity.
摘要翻译： 在用于控制步进电动机的换向的电路装置中，每个相绕组（1）连接到由四个开关晶体管（2,3,4,5）组成的桥接电路的检测器对角线，电容器（17） ）连接在每个相绕组（1）上，并且在桥式电路的两个臂的每一个中包括去耦二极管（13,14）。 在包括互补晶体管（2,4; 3,5）的桥接电路的情况下，其发射极连接到电源电压（Uo）的端子（6,7）并且其集电极成对互连，去耦二极管 13,24）被包含在一种导电类型的晶体管（2,4）的集电极引线中，并且保护二极管（15,16）并联连接到晶体管（3,5）的集电极 - 发射极路径， 的另一种导电性。
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34.发明授权Switching frequency stabilization and load fault detection in switching amplifiers 失效开关放大器中的开关频率稳定和负载故障检测
公开(公告)号：US4339701A
公开(公告)日：1982-07-13
申请号：US139596
申请日：1980-04-11
申请人： Eric K. Pritchard
发明人： Eric K. Pritchard
摘要： The switching amplifiers of the prior art improved by a variable hysteresis in the comparator circuitry of said amplifier. Said variable hysteresis is controlled by the power supply voltage and a frequency sensitive feedback circuit. If the amplifier load creates an excessive frequency which cannot be controlled, a fault detector circuit disables the amplifier.
摘要翻译： 现有技术的开关放大器由所述放大器的比较器电路中的可变滞后改善。 所述可变滞后由电源电压和频率敏感反馈电路控制。 如果放大器负载产生无法控制的过大频率，故障检测器电路将禁用放大器。
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公开(公告)号：US11677230B2
公开(公告)日：2023-06-13
申请号：US16556970
申请日：2019-08-30
发明人： Stan R. Simms , Thomas A. Farr , Hanning Tang
CPC分类号： H02H7/09 , H02H7/0822 , H02P8/36 , G01R33/072 , H02P29/02
摘要： An apparatus includes a magnetometer-based current sensor (e.g., a Hall-effect or fluxgate-based current sensor) configured to sense a magnetic field generated by a current in at least one conductor connecting a motor drive output to a motor and to responsively produce a first current sense signal and a magnetometer-based voltage sensor (e.g., a Hall-effect or fluxgate-based voltage sensor) configured to sense a magnetic field generated in response to a voltage of the at least one conductor and to responsively produce a first voltage sense signal. The apparatus further includes a signal conversion circuit configured to receive the first current sense signal and the first voltage sense signal and to generate a second current sense input and a second voltage sense input for provision to a current sense input and a voltage sense input, respectively, of a motor protection relay that protects the motor.
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公开(公告)号：US20210175838A1
公开(公告)日：2021-06-10
申请号：US17269073
申请日：2019-08-12
发明人： Ji-Young BYUN , Yong-Ho YOU , Hyoungil KIM
摘要： An image forming apparatus and an image forming method are provided. The image forming apparatus includes a printing engine to form an image, a step motor to drive the printing engine, a driving circuit to provide a constant current to the step motor and sense a voltage corresponding to a magnitude of the constant current provided to the step motor, and a processor to calculate a temperature of the step motor based on the voltage sensed by the driving circuit during an excitation period of the step motor and control an operation of the image forming apparatus based on the calculated temperature.
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公开(公告)号：US10389283B2
公开(公告)日：2019-08-20
申请号：US14198705
申请日：2014-03-06
发明人： Yoshihiro Mizuo
IPC分类号： H02P29/024 , G01P3/486 , H02P8/36 , H02P8/34
摘要： A motor drive apparatus includes a drive unit to supply motor coils with sinusoidal drive signals, a signal output unit outputs signals that change with rotation of a rotor, and a control unit. The control unit acquires first information relating to the sinusoidal drive signals at a timing of change of a corresponding one of the output signals in a case where there is no follow-up delay of the rotor relative to the drive signals. When the corresponding one of the output signals is changed, the control unit acquires second information relating to the sinusoidal drive signals at a timing of change of the corresponding one of the output signals in a case where there is a follow-up delay of the rotor relative to the drive signals. The control unit corrects the follow-up delay of the rotor based on a determined difference between the first and second information.
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公开(公告)号：US10141815B2
公开(公告)日：2018-11-27
申请号：US14938330
申请日：2015-11-11
申请人： Siemens Energy, Inc.
摘要： A variable pressure electric generator, including a gas cooled rotor arranged along a centerline of the generator; a gas cooled core arranged coaxially and surrounding the rotor; a plurality of coils arranged within the core; a stator frame arranged to fixedly support the core and rotationally support the rotor; a gas cooling system that circulates a cooling gas within the generator; a pressurizing system that operatively pressurizes the cooling medium to a maximum pressure of 2 bar relative to atmospheric pressure, wherein the pressurizing system continuously determines the cooling medium pressure based upon operational requirements; and a low pressure frame that surrounds a plurality of the rotor and an entirety of the core and stator windings, the frame configured to operatively contain an internal pressure of 2 bar relative to atmospheric pressure.
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39.发明授权公开(公告)号：US10103660B2
公开(公告)日：2018-10-16
申请号：US15877043
申请日：2018-01-22
申请人： LG Innotek Co., Ltd.
发明人： Jin Seob Lee
IPC分类号： H02P8/36 , G05B19/404 , H02K7/06
摘要： The present invention provides an actuator including a motor; a lead screw rotating by coupling to the motor; a nut part moving forward or backward by coupling to the lead screw; a magnet coupled to the nut part; a sensor unit configured to sense a change amount of magnetic flux depending on a position of the magnet and convert the sensed change amount of magnetic flux into measured voltage data; and a control unit controlling the motor; wherein the magnet comprises a first pole and a second pole arranged in order in the movement direction of the nut part, wherein, if the sensor unit senses the first pole when the nut part is moved forward, the control unit performs a first motion in which a forward movement of the nut part is stopped and moves the nut part backward, and if the sensor unit senses the second pole after the first motion, the control unit performs a second motion in which the movement of the nut part is stopped and moves the nut part forward.
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40.发明申请公开(公告)号：US20180145619A1
公开(公告)日：2018-05-24
申请号：US15877043
申请日：2018-01-22
申请人： LG Innotek Co., Ltd.
发明人： JIN SEOB LEE
IPC分类号： H02P8/36 , H02K7/06 , G05B19/404
CPC分类号： H02P8/36 , G05B19/404 , G05B2219/37094 , G05B2219/37124 , G05B2219/37277 , G05B2219/41099 , G05B2219/41206 , G05B2219/50043 , H02K7/06
摘要： The present invention provides an actuator including a motor; a lead screw rotating by coupling to the motor; a nut part moving forward or backward by coupling to the lead screw; a magnet coupled to the nut part; a sensor unit configured to sense a change amount of magnetic flux depending on a position of the magnet and convert the sensed change amount of magnetic flux into measured voltage data; and a control unit controlling the motor; wherein the magnet comprises a first pole and a second pole arranged in order in the movement direction of the nut part, wherein, if the sensor unit senses the first pole when the nut part is moved forward, the control unit performs a first motion in which a forward movement of the nut part is stopped and moves the nut part backward, and if the sensor unit senses the second pole after the first motion, the control unit performs a second motion in which the movement of the nut part is stopped and moves the nut part forward.
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