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11.发明申请Method and apparatus for eliminating stall and cogging in multi-phase stepping motors 失效消除多相步进电机失速和齿槽的方法和装置公开(公告)号：US20080100249A1
公开(公告)日：2008-05-01
申请号：US11818947
申请日：2006-10-30
申请人： David Coutu
发明人： David Coutu
摘要： The lead or lag relationship between the stator and rotor of a stepper motor is monitored on a continuing basis by an incremental encoder, in feed-back relation, and adjusts the lead or lag to within optimum range values to thereby prevent motor stalls and motor cogging.
摘要翻译： 步进电动机的定子和转子之间的牵引或滞后关系在反馈关系中通过增量式编码器连续监测，并将牵引或滞后调节到最佳范围值内，从而防止电机失速和电动机齿槽 。
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公开(公告)号：US07148643B2
公开(公告)日：2006-12-12
申请号：US11202048
申请日：2005-08-09
IPC分类号： G05B5/00
CPC分类号： H02P8/36 , Y10S388/934
摘要： A single-phase motor driving circuit includes a controller for outputting a control signal to drive a single-phase motor in a period in which a saw-tooth voltage of a predetermined cycle is larger than a duty setting voltage based on a result of comparing a detected temperature voltage changed based on a temperature detected by a temperature detecting device with a starting duty setting voltage increased with time while a voltage smaller than the detected temperature voltage at the time of starting the single-phase motor is set as an initial value. The controller sets the duty setting voltage as the starting duty setting voltage when the result of the comparison shows that the starting duty setting voltage is smaller than the detected temperature voltage, and the duty setting voltage as the detected temperature voltage when the starting duty setting voltage is larger than the detected temperature voltage.
摘要翻译： 单相电动机驱动电路包括：控制器，用于在预定周期的锯齿电压大于占空比设定电压的期间输出用于驱动单相电动机的控制信号，所述周期基于比较结果 检测温度电压根据由温度检测装置检测出的温度而变化，其中启动负载设定电压随着时间而增加，而小于检测到的启动单相电动机时的温度电压的电压被设定为初始值。 当比较结果表明启动占空比设定电压小于检测到的温度电压时，控制器将占空比设定电压设置为起始占空比设定电压，并且当起动占空比设定电压 大于检测到的温度电压。
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公开(公告)号：US06900657B2
公开(公告)日：2005-05-31
申请号：US10668213
申请日：2003-09-24
申请人： Tanh M. Bui , Dacon T. Chow
发明人： Tanh M. Bui , Dacon T. Chow
CPC分类号： H02P8/36
摘要： A stall detection circuit and method for a stepper motor. The circuit has an H-bridge configuration with an additional circuit pathway to ground being connected at a point between two center windings. During the transition between step sequences, the circuit employs a monitoring phase in which the previously active low side driver is turned off such that current passes through only the first winding and then is diverted to ground via the additional pathway. While the phase voltage is thus momentarily extinguished, the second coil is used to monitor the motor's back EMF, from which it can be determined whether the rotor is in a normal running mode, a stall, or a reverse condition.
摘要翻译： 一种用于步进电机的失速检测电路和方法。 电路具有H桥结构，其中在两个中心绕组之间的点处连接有附加的电路通路。 在步进序列之间的转换期间，电路采用监测阶段，其中先前有效的低侧驱动器被关闭，使得电流仅通过第一绕组，然后经由附加通路转向接地。 在相电压暂时熄灭的情况下，第二线圈用于监视电动机的反电动势，从而可以确定转子是否处于正常行驶模式，失速或反向状态。
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公开(公告)号：US06815923B2
公开(公告)日：2004-11-09
申请号：US10215487
申请日：2002-08-08
申请人： Wayne Michael Forsey
发明人： Wayne Michael Forsey
IPC分类号： H02P836
CPC分类号： H02P8/36 , Y10S388/903 , Y10S388/904
摘要： Methods, devices and circuits for detecting malfunctions in stepper motors. A signal from a driver circuit to a stepper motor that is proportional to the current in the windings of the stepper motor is detected. This signal is then amplified and integrated for ease of comparison. The resulting signal is then compared to a specific entry in a table of values with each entry in the table corresponding to an operating profile of the stepper motor. If the resulting signal does not correspond to the operating profile for which the motor a configured, the stepper motor is jammed. A suitable alarm and a corresponding sequence of actions may then be triggered.
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公开(公告)号：US5690440A
公开(公告)日：1997-11-25
申请号：US502462
申请日：1995-07-14
申请人： Shinji Konishi
发明人： Shinji Konishi
CPC分类号： H02P8/36
摘要： A controller for a serial printer carriage in a serial printer for printing characters line by line with an interval at the end of each line by moving a carriage with a motor, the controller comprises: an interval timer for setting an interval between the termination of printing one line and the commencement of printing the next line by the motor; a motor driver for starting supplying a driving current to the motor so as to print characters of one line at the timing determined by the output of the interval timer; an energy measuring unit for measuring the energy consumed by the motor per unit time; a limitation-value limiter for setting the limitation value of energy consumption by the motor per unit time; comparator for comparing the measured value of the consumed energy from the energy measuring unit with the limitation value of energy consumption; and interval adjuster for generating a time setting signal for extending the interval set by the interval timer when the comparison made by the comparator indicates that the consumed energy has reached the limitation value, and shortening the interval when the consumed energy has not reached the limitation value.
摘要翻译： 一种用于串行打印机中的串行打印机托架的控制器，用于通过使用马达移动托架，以每行末端的间隔逐行打印字符，所述控制器包括：间隔定时器，用于设置打印结束之间的间隔 一条线，电机开始下一条线的打印; 马达驱动器，用于开始向马达提供驱动电流，以便在由间隔定时器的输出确定的定时处打印一行的字符; 用于测量每单位时间由电动机消耗的能量的能量测量单元; 限制值限制器，用于设定电机每单位时间的能耗限制值; 比较器，用于将来自能量测量单元的消耗能量的测量值与能量消耗的限制值进行比较; 以及间隔调整器，用于当由比较器进行的比较指示消耗的能量已经达到限制值时产生用于延长由间隔定时器设置的间隔的时间设置信号，并且当消耗的能量未达到限制值时缩短间隔 。
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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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17.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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18.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：US20170317625A1
公开(公告)日：2017-11-02
申请号：US15142219
申请日：2016-04-29
摘要： A voltage regulator includes an output transistor, an error amplifier coupled to the output transistor, a cascode transistor coupled to the output transistor in series, and a cascode bias circuit coupled to the cascode transistor and the output transistor. The output transistor is configured to generate an output signal at a first voltage. The error amplifier is configured to receive a reference signal. The cascode bias circuit is configured to bias the cascode transistor such that, in response to a drain-to-source short circuit of the output transistor, the cascode transistor generates the output signal at the first voltage.
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公开(公告)号：US20170117836A1
公开(公告)日：2017-04-27
申请号：US14923778
申请日：2015-10-27
摘要： A driving device includes a case with a cover mounted thereto. A transmission device is received in the case and has a stepper motor and a gear reduction unit which includes multiple gears engaged with each other. The stepper motor drives the gear reduction unit which is connected to an object. A circuit board is connected with the transmission device and provides power to the stepper motor and controls the stepper motor. A sensing device has a sensor and a detector which is connected to one of the gears of the gear reduction unit. When the gear reduction unit drives the detector to pass the sensor, the sensor sends a signal to the circuit board which keeps on providing the power to the stepper motor. When no signal is sent to the circuit board by the sensor, the circuit board cuts off the power to the stepper motor.
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