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公开(公告)号：US4454503A
公开(公告)日：1984-06-12
申请号：US299047
申请日：1981-09-03
申请人： Charles E. Konrad
发明人： Charles E. Konrad
CPC分类号： H02H7/0844 , G01R31/40
摘要： A transistor fault indicator circuit monitors the conduction state of a transistor and compares that state to a commanded state. Differences in states are treated as faults and actuate an alarm or shut down the system including the transistor. In systems in which the transistor may be operated in a continuous conduction mode for long time periods, a control circuit is provided to periodically short circuit the base-emitter bias of the transistor to force a momentary period of nonconduction during which time the proper operation of the transistor can be verified.
摘要翻译： 晶体管故障指示器电路监视晶体管的导通状态，并将该状态与指令状态进行比较。 状态差异被视为故障，并启动报警或关闭包括晶体管在内的系统。 在其中晶体管可以在连续导通模式下长时间操作的系统中，提供控制电路以周期性地短路晶体管的基极 - 发射极偏压，以迫使非导通的瞬间周期，在此期间， 可以验证晶体管。
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公开(公告)号：US4443744A
公开(公告)日：1984-04-17
申请号：US453559
申请日：1982-12-27
申请人： Charles E. Konrad
发明人： Charles E. Konrad
CPC分类号： H02P7/281 , B60L3/0023 , Y02T10/642
摘要： For protection against commutation failures in a motor control circuit, there is provided a method and apparatus by which the charge on a commutating capacitor is made to track the armature current of a separately excited motor regardless of the operating mode of the motor. In preferred form, a commutating network is provided having a commutating capacitor, a charge reversal thyristor, and a commutating thyristor configured to cause commutation of a main, control thyristor upon sequentially gating the charge reversal thyristor and the commutating thyristor with charge of sufficient magnitude stored on the capacitor. The thyristors of the commutating network are gated according to the operating mode of the motor; thus, there is included a means, or step, for sensing the motor operating mode. In the braking mode, the main thyristor is inhibited while the charge reversal and commutating thyristors are alternately, sequentially gated such that commutating capacitor charge is at all times proportional to the braking current. Upon resuming operation in the motoring mode, there is assurance that capacitor charge is sufficient to prevent commutation failures.
摘要翻译： 为了防止电动机控制电路中的换向故障，提供了一种方法和装置，通过该方法和装置，使得换向电容器上的电荷跟踪单独激励的电动机的电枢电流，而与电动机的操作模式无关。 在优选形式中，提供换向网络，其具有整流电容器，电荷反向晶闸管和整流晶闸管，其被配置为在以足够大的电量存储的电荷顺序地选通电荷反向晶闸管和换向晶闸管时引起主控制晶闸管的换向 在电容上。 整流网络的晶闸管根据电机的工作模式选通; 因此，包括用于感测电机操作模式的手段或步骤。 在制动模式下，当电荷反转和换向晶闸管交替地顺序选通时，主晶闸管被禁止，使得整流电容器充电始终与制动电流成正比。 在电机运行模式下恢复运行时，保证电容充电足以防止换向故障。
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公开(公告)号：US4423362A
公开(公告)日：1983-12-27
申请号：US379867
申请日：1982-05-19
CPC分类号： H02P7/285 , B60L15/08 , H02P7/298 , Y02T10/645 , Y02T10/7258 , Y10S388/903 , Y10S388/92 , Y10S388/934
摘要： A control system for a separately excited DC electric traction motor in an electrically powered vehicle incorporates a plurality of current limit functions designed to protect both the motor and control electronics. A time dependent current limit is utilized to permit overcurrent conditions for limited time intervals such that additional power can be obtained for sudden torque requirements without having to design the motor or control electronics to function under continuous high torque conditions. The continuous current limit values based on percent conduction time of a thyristor chopper circuit in the control system is modified in response to overheating of the motor and the main switching thyristor, to overvoltage on the thyristor commutating capacitor and to available voltage for powering the motor.
摘要翻译： 用于电动车辆中的单独激励的直流电力牵引电动机的控制系统包括设计成保护电动机和控制电子装置的多个限流功能。 利用时间相关的电流限制来允许有限时间间隔的过电流条件，使得可以获得突发的转矩要求的附加功率，而不必将电动机或控制电子设备设计为在连续的高扭矩条件下起作用。 基于控制系统中的晶闸管斩波电路的导通时间百分比的连续电流限制值是根据电动机和主开关晶闸管的过热，晶闸管换向电容器的过电压以及为电动机供电的可用电压进行修改的。
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公开(公告)号：US4320334A
公开(公告)日：1982-03-16
申请号：US192882
申请日：1980-10-01
CPC分类号： G01R19/16542 , G01R31/3682 , Y10S320/21 , Y10S320/34
摘要： Apparatus for providing a continuous indication of battery state-of-charge under load in a system in which the battery is subject to varying load conditions. The apparatus stores a value representative of battery open circuit terminal voltage and reduces the stored value while the battery is loaded at a rate proportional to the difference between the stored value and a scaled value of actual battery terminal voltage. If the scaled value exceeds the stored value, the stored value is increased to a value corresponding to the scaled value.
摘要翻译： 用于在其中电池经受变化的负载条件的系统中提供负载下的电池充电状态的连续指示的装置。 该装置存储代表电池开路端子电压的值，并且在以与存储值和实际电池端子电压的缩放值成比例的速率加载电池的同时减小存储值。 如果缩放值超过存储值，则将存储的值增加到与缩放值对应的值。
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公开(公告)号：US06254353B1
公开(公告)日：2001-07-03
申请号：US09395634
申请日：1999-09-14
IPC分类号： F04B4906
CPC分类号： F04D15/0245 , F04D15/0077 , F04D15/0281
摘要： A submersible pumping system which, in one embodiment, includes a motor, a pump and a control circuit, or unit, coupled to the motor for controlling the operation of the motor is described. Using motor and sensor signals, the control unit detects various conditions within the pumping system and alters motor operation. In an exemplary embodiment, the control unit initiates an oscillation sequence of applying a forward torque for a first preselected period of time, applying a reverse torque for a second preselected period of time, and then repeating the torque applying steps a selected number of times to eliminate an obstruction from the pump.
摘要翻译： 描述了一种在一个实施例中的潜水泵送系统，其包括马达，泵和控制电路或联接到马达上的控制马达运行控制单元。 使用电机和传感器信号，控制单元检测泵送系统内的各种条件，并改变电机运行。 在示例性实施例中，控制单元启动在第一预选时间段内施加正向转矩的振荡序列，在第二预选时间段施加反向转矩，然后将选定次数的转矩施加步骤重复到 消除泵的阻塞。
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6.发明授权Method and apparatus for improved efficiency in a pulse-width-modulated alternating current motor drive 失效用于提高脉冲宽度调制的交流电动机驱动器的效率的方法和装置
公开(公告)号：US5486748A
公开(公告)日：1996-01-23
申请号：US195636
申请日：1994-02-14
IPC分类号： H02P27/08 , B60L11/18 , H02M7/5387 , H02P27/06 , H02P5/28
CPC分类号： H02M7/53875 , B60L11/1803 , B60L2210/40 , Y02T10/7005 , Y02T10/7241
摘要： A scheme for optimizing the efficiency of an AC motor drive operated in a pulse-width-modulated mode provides that the modulation frequency of the power furnished to the motor is a function of commanded motor torque and is higher at lower torque requirements than at higher torque requirements.
摘要翻译： 用于优化以脉冲宽度调制模式操作的AC电动机驱动器的效率的方案提供了提供给电动机的电力的调制频率是指令电动机转矩的函数，并且在较低转矩要求下比在较高转矩下更高 要求。
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公开(公告)号：US4870564A
公开(公告)日：1989-09-26
申请号：US195050
申请日：1988-05-17
CPC分类号： G06F11/22 , G05B19/054 , G06F13/124 , G05B2219/1101 , G05B2219/1102 , G05B2219/1103 , G05B2219/1131 , G05B2219/1158 , G05B2219/1162 , G05B2219/1168 , G05B2219/1179 , G05B2219/14084 , G05B2219/14089 , G05B2219/14123 , G05B2219/15018 , G05B2219/34162 , G05B2219/34242
摘要： The invention disclosed provides an intelligent input/output system for a programmable controller and includes a plurality of input/output (I/O) modules, each of which may be located in proximity to the process being controlled. Each module is interconnected, via a communications link, to a central processor unit (CPU) through an I/O controller. Each module is made up of a plurality of input/output circuits and each may be selectively operated as an input circuit or as an output circuit. The selection is preferably under control of the CPU. Each I/O module includes an operations control unit for controlling each I/O circuit and for providing an exchange of diagnostic and control signals between each I/O circuit and the I/O controller and CPU. Communications between the operations control unit and each I/O circuit is preferably carried out via a pair of conductors, one conductor of which conveys a set of recurring control signals (e.g., in signal frames) and the other of which conveys encoded diagnostic signals.
摘要翻译： 所公开的本发明提供了一种用于可编程控制器的智能输入/输出系统，并且包括多个输入/输出（I / O）模块，每个模块可以位于被控制过程附近。 每个模块通过通信链路通过I / O控制器互连到中央处理器单元（CPU）。 每个模块由多个输入/输出电路组成，并且每个模块可以选择性地操作为输入电路或作为输出电路。 该选择优选地在CPU的控制下。 每个I / O模块包括用于控制每个I / O电路并且在每个I / O电路和I / O控制器和CPU之间提供诊断和控制信号交换的操作控制单元。 操作控制单元和每个I / O电路之间的通信优选地经由一对导体执行，一对导体传送一组循环控制信号（例如，在信号帧中），另一个导体传送编码的诊断信号。
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公开(公告)号：US4764868A
公开(公告)日：1988-08-16
申请号：US931005
申请日：1986-11-17
CPC分类号： G06F13/124 , G05B19/054 , G06F11/22 , G05B2219/1101 , G05B2219/1102 , G05B2219/1103 , G05B2219/1131 , G05B2219/1158 , G05B2219/1162 , G05B2219/1168 , G05B2219/1179 , G05B2219/14084 , G05B2219/14089 , G05B2219/14123 , G05B2219/15018 , G05B2219/34162 , G05B2219/34242
摘要： An intelligent input/output system for a programmable controller includes a plurality of input/output (I/O) modules, each of which may be located in proximity to the process being controlled. Each module is interconnected, via a communications link, to a central processor unit (CPU) through an I/O controller. Each module is made up of a plurality of input/output circuits and each may be selectively operated as an input circuit or as an output circuit. The selection is preferably under control of the CPU. Each I/O module includes an operations control unit for controlling each I/O circuit and for providing an exchange of diagnostic and control signals between each I/O circuit and the I/O controller and CPU. Communications between the operations control unit and each I/O circuit is preferably carried out via a pair of conductors, one conductor of which conveys a set of recurring control signals (e.g., in signal frames) and the other of which conveys encoded diagnostic signals.
摘要翻译： 用于可编程控制器的智能输入/输出系统包括多个输入/输出（I / O）模块，每个模块可以位于被控制过程附近。 每个模块通过通信链路通过I / O控制器互连到中央处理器单元（CPU）。 每个模块由多个输入/输出电路组成，并且每个模块可以选择性地操作为输入电路或作为输出电路。 该选择优选地在CPU的控制下。 每个I / O模块包括用于控制每个I / O电路并且在每个I / O电路和I / O控制器和CPU之间提供诊断和控制信号交换的操作控制单元。 操作控制单元和每个I / O电路之间的通信优选地经由一对导体执行，一对导体传送一组循环控制信号（例如，在信号帧中），另一个传送编码的诊断信号。
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公开(公告)号：US4593380A
公开(公告)日：1986-06-03
申请号：US617162
申请日：1984-06-04
CPC分类号： G05B19/058 , G05B2219/21115
摘要： The invention disclosed provides circuitry which is selectively operable either as an input point or as an output point in a programmable controller having multiple input and output points for exchanging signals between a central processing unit (CPU) of the controller and a process being controlled. Preferably, operation as an input point or as an output point is under control of the CPU. The invention includes a common input/output terminal for terminating both input and output devices; an input return terminal for terminating a return conductor from the input device; an output return terminal for terminating a return conductor from the output device; a preload resistor connected between the input/output terminal and the output return terminal so that a status signal is developed across the preload resistor indicating the status (generally, open or closed) of the input device; and an insulated gate transistor (IGT) connected between the input/output terminal and the input return terminal. The insulated gate transistor, capable of being triggered on and off, is held in an off state whenever the circuit is selected to be operated as an input point and is triggered on and off when the circuit is selected to operate as an output point. Most preferably, the IGT includes a main current section and an emulation current section and is arranged such that a burden resistor in series with the emulation section provides a diagnostic signal indicative of total IGT current.
摘要翻译： 所公开的发明提供了可选择地可操作地作为可编程控制器中的输入点或作为输出点的电路，该可编程控制器具有用于在控制器的中央处理单元（CPU）和被控制的进程之间交换信号的多个输入和输出点。 优选地，作为输入点或作为输出点的操作在CPU的控制下。 本发明包括用于终止输入和输出设备的公共输入/输出端子; 输入返回端子，用于从输入装置端接返回导体; 输出返回端子，用于从输出装置端接返回导体; 连接在输入/输出端子和输出返回端子之间的预加载电阻器，使得在预加载电阻器上产生指示输入装置的状态（通常为开路或关闭）的状态信号; 以及连接在输入/输出端子和输入返回端子之间的绝缘栅晶体管（IGT）。 每当选择电路作为输入点操作时，能够被触发导通和关断的绝缘栅极晶体管保持在断开状态，并且当电路被选择为操作作为输出点时被触发导通和关断。 最优选地，IGT包括主电流部分和仿真电流部分，并且被布置成使得与仿真部分串联的负载电阻器提供指示总IGT电流的诊断信号。
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公开(公告)号：US4500818A
公开(公告)日：1985-02-19
申请号：US564176
申请日：1983-12-22
CPC分类号： B60L15/2036 , H02P5/685 , H02P7/298 , Y02T10/645 , Y02T10/646 , Y02T10/648 , Y02T10/7275
摘要： The invention disclosed is a control system for controlling a pair of separately excited motors arranged such that each motor of the pair drives a separate wheel on a common axle of an electrically powered vehicle. The control system continuously and individually adjusts the field excitation of the drive motors so that torque and speed of the separate wheels are apportioned to the wheels as a function of the steering angle of the vehicle. Preferably, the control system includes an armature current regulating loop for regulating current to the series connected armatures of the dual motors in accordance with an operator command signal; a field regulator for regulating the two separate motor field windings in proportional to the armature current; a sensor to continuously detect the steering angle of the vehicle; circuitry for providing inside and outside wheel signals, each as a function of the steering angle such that an increase or decrease in the value of one signal produces the opposite response in the other signal and such that the two signals always sum to a constant value; and circuitry for adjusting the two field windings in accordance with the inside and outside wheel signals.
摘要翻译： 所公开的发明是一种用于控制一对单独激励的电动机的控制系统，其被布置为使得该对的每个电动机在电动车辆的公共轴上驱动单独的车轮。 控制系统连续地和单独地调节驱动电动机的励磁，使得单独的车轮的扭矩和速度作为车辆转向角的函数分配给车轮。 优选地，控制系统包括电枢电流调节回路，用于根据操作者指令信号调节到双电动机的串联连接的电枢的电流; 用于与电枢电流成比例地调节两个分离的电动机励磁绕组的励磁调节器; 用于连续地检测车辆的转向角的传感器; 用于提供内部和外部车轮信号的电路，每个作为转向角的函数，使得一个信号的值的增加或减小在另一个信号中产生相反的响应，并且使得两个信号总是相加到恒定值; 以及用于根据内外轮信号调整两个励磁绕组的电路。
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