公开(公告)号：US07164244B2

公开(公告)日：2007-01-16

申请号：US11001660

申请日：2004-12-01

Applicant: Marco Viti

Inventor： Marco Viti

IPC: H02P3/08

CPC classification number: H02M7/53875 ,  Y10S388/907 ,  Y10S388/912

Abstract: An electric motor controller controls the currents flowing through the phase windings of an electric motor. The electric motor controller includes driving stages for driving respective phase windings of the motor and a memory for storing samples of reference signals. The driving stages force currents corresponding to the reference signals through a respective phase winding of the motor. The electric motor controller includes circuitry to determine subdivision degree intervals of an electric rotation and circuitry for comparing one of the currents flowing through the respective phase windings of the motor with at least one of the samples of the respective reference signal in at least one portion of each one of the degree intervals.

Abstract translation: 电动机控制器控制流过电动机的相绕组的电流。 电动机控制器包括用于驱动电动机的各相绕组的驱动级和用于存储参考信号样本的存储器。 驱动级通过电动机的各自的相绕励力来对应于参考信号的电流。 电动机控制器包括用于确定电动旋转的细分度间隔的电路和用于将流过电动机的相应相位绕组的电流中的一个电流与相应参考信号的至少一个样本在至少一部分 每个度数间隔。

公开(公告)号：US20050280382A1

公开(公告)日：2005-12-22

申请号：US11001660

申请日：2004-12-01

Applicant: Marco Viti

Inventor： Marco Viti

IPC: H02M7/5387 ,  H02P7/06

CPC classification number: H02M7/53875 ,  Y10S388/907 ,  Y10S388/912

Abstract: An electric motor controller controls the currents flowing through the phase windings of an electric motor. The electric motor controller includes driving stages for driving respective phase windings of the motor and a memory for storing samples of reference signals. The driving stages force currents corresponding to the reference signals through a respective phase winding of the motor. The electric motor controller includes circuitry to determine subdivision degree intervals of an electric gyro and circuitry for comparing one of the currents flowing through the respective phase windings of the motor with at least one of the samples of the respective reference signal in at least one portion of each one of the degree intervals.

Abstract translation: 电动机控制器控制流过电动机的相绕组的电流。 电动机控制器包括用于驱动电动机的各相绕组的驱动级和用于存储参考信号样本的存储器。 驱动级通过电动机的各自的相绕励力来对应于参考信号的电流。 电动机控制器包括用于确定电陀螺仪的细分度间隔的电路和用于将流过电动机的各相绕组的电流中的一个电流与相应参考信号的至少一个样本在至少一部分 每个度数间隔。

公开(公告)号：US20050047761A1

公开(公告)日：2005-03-03

申请号：US10650028

申请日：2003-08-27

Applicant: Samuel Babb ,  Jeffrey Weaver ,  James Yost ,  Garland Lee ,  Peter Piotrowski

Inventor： Samuel Babb ,  Jeffrey Weaver ,  James Yost ,  Garland Lee ,  Peter Piotrowski

IPC: H02P6/10 ,  H02P5/06

CPC classification number: H02P6/10 ,  Y10S388/907 ,  Y10S388/911

Abstract: A method for reducing commutation-related acoustic noise in a fan system is provided. A constant frequency periodic signal is generated and a fan commutation event is synchronized with a zero level value of the constant frequency periodic signal. A system for controlling a direct current fan is provided. The system comprises a signal generator adapted to produce a periodic signal of a constant frequency and a phase-locked loop. A zero level value of the periodic signal is synchronized with a commutation event of the fan.

Abstract translation: 提供了一种用于减少风扇系统中的换向相关声学噪声的方法。 产生恒定频率周期信号，风扇换向事件与恒定频率周期信号的零电平值同步。 提供一种用于控制直流风扇的系统。 该系统包括适于产生恒定频率的周期信号和锁相环的信号发生器。 周期信号的零电平值与风扇的换向事件同步。

公开(公告)号：US5812428A

公开(公告)日：1998-09-22

申请号：US853809

申请日：1997-05-09

Applicant: Hehong Zou ,  Coy L. Hays

Inventor： Hehong Zou ,  Coy L. Hays

IPC: G05B13/02 ,  G05B13/04

CPC classification number: G05B13/042 ,  G05B13/021 ,  Y10S388/907

Abstract: A process controller controls an integrating-type process based on a measured process variable and a set point. The process controller includes an error generating circuit, a non-integrating control circuit and an adaptive bias circuit. The error generating circuit generates an error signal based on a difference between the set point and the measured process variable. The control circuit generates a control signal as a function of the error signal. The adaptive bias circuit adds a bias value to the control signal, the measured process variable or the set point. The bias value is selectively updated as a function of the error signal to force the error signal toward zero.

Abstract translation: 过程控制器基于测量的过程变量和设定点来控制积分型过程。 过程控制器包括误差产生电路，非积分控制电路和自适应偏置电路。 误差产生电路基于设定点和测量过程变量之间的差产生误差信号。 控制电路产生作为误差信号的函数的控制信号。 自适应偏置电路将偏置值添加到控制信号，测量过程变量或设定点。 偏置值被有选择地更新为误差信号的函数，以迫使误差信号为零。

公开(公告)号：US4554964A

公开(公告)日：1985-11-26

申请号：US579018

申请日：1984-02-10

Applicant: Koichi Awano ,  Yoshifumi Nitta ,  Satoshi Ibe

Inventor： Koichi Awano ,  Yoshifumi Nitta ,  Satoshi Ibe

IPC: G05B11/18 ,  F28F27/00 ,  F25B39/04

CPC classification number: F28F27/003 ,  Y02B30/748 ,  Y10S165/90 ,  Y10S388/906 ,  Y10S388/907 ,  Y10S388/912

Abstract: A method for controlling the temperature of water to be fed into a water cooling tower in which when the driving power required to drive motors to be controlled is in excess of the power which can be derived from a frequency converter, some of the motors are driven by a constant-frequency power supply while the remaining motors are driven by the frequency converter. Therefore, the temperature of water to be fed into the water cooling tower can be continuously controlled without increasing the capacity of the frequency converter.

Abstract translation: 一种用于控制供给到水冷却塔中的水的温度的方法，其中当驱动要控制的电动机所需的驱动功率超过可从变频器导出的功率时，一些电动机被驱动 通过恒定频率电源，而剩余的电动机由变频器驱动。 因此，不会增加变频器的容量，能够连续地控制供给水冷却塔的水的温度。

公开(公告)号：US4152758A

公开(公告)日：1979-05-01

申请号：US836457

申请日：1977-09-26

Applicant: Ronald B. Bailey ,  Thomas D. Stitt ,  Dennis F. Williamson

Inventor： Ronald B. Bailey ,  Thomas D. Stitt ,  Dennis F. Williamson

IPC: H02P7/292 ,  H02M7/155

CPC classification number: H02P7/293 ,  Y10S388/907 ,  Y10S388/909 ,  Y10S388/915 ,  Y10S388/917

Abstract: Apparatus for providing firing signals to a phase controlled rectifier circuit at a time at which valves in the rectifier circuit are forward biased without the need for providing continuous firing signals. The apparatus monitors the voltage applied across the rectifier valves and provides a signal when a valve is forward biased. This signal is applid to a gating circuit which determines whether a normal phase control firing command was initiated prior to the time the valve became forward biased. If such a command was initiated, the gating circuit passes the signal to a valve firing circuit which provides firing signals to the rectifier circuit. If the firing command was not previously initiated, the signal is inhibited and firing signals are subsequently applied to the rectifier circuit upon receipt of a firing command.

Abstract translation: 用于在整流电路中的阀正向偏置的时刻向可控整流电路提供点火信号的装置，而不需要提供连续的点火信号。 该装置监视施加在整流阀上的电压，并在阀向前偏置时提供信号。 该信号适用于选通电路，其确定在阀门向前偏置之前是否启动正常相位控制点火命令。 如果这样的命令被启动，则门控电路将信号传递到向整流器电路提供点火信号的阀门点火电路。 如果起动命令以前没有启动，则信号被禁止，并且接收到击发命令后，点火信号随后被施加到整流器电路。

公开(公告)号：US4096422A

公开(公告)日：1978-06-20

申请号：US637540

申请日：1975-12-03

Applicant: John Augustus Fleming ,  Frank James Allen

Inventor： John Augustus Fleming ,  Frank James Allen

IPC: H02P27/02 ,  H02P5/00

CPC classification number: H02P27/026 ,  Y10S388/903 ,  Y10S388/907 ,  Y10S388/916 ,  Y10S388/921

Abstract: The duty cycle of the alternating current waveform applied to an electric motor is varied by varying the firing point of an SCR circuit. This firing point is varied by logic circuitry which responds to the largest (or smallest) output of several integrators each of which provides an increasing or decreasing control voltage in response to different error signals. The error signals are related to different control criteria such as motor speed, motor current, etc. Thus the error signal indicating the greatest deviation from a set point controls the firing point. Since the output level of the integrators is slow to vary, a high degree of noise immunity is attained.

Abstract translation: 通过改变SCR电路的点火来改变施加到电动机的交流波形的占空比。 这个触发点由响应于多个积分器的最大（或最小）输出的逻辑电路而变化，每个积分器响应于不同的误差信号而提供增加或减小的控制电压。 误差信号与电机速度，电动机电流等不同的控制标准有关。因此，指示与设定点的最大偏差的误差信号控制点火点。 由于积分器的输出电平变化较慢，因此可以获得高度的抗噪声能力。

公开(公告)号：US3895278A

公开(公告)日：1975-07-15

申请号：US40327473

申请日：1973-10-03

Applicant: UNION CARBIDE CORP

Inventor： PICUNKO THOMAS

IPC: H02P23/00 ,  H02P1/04

CPC classification number: H02P23/20 ,  Y10S388/907 ,  Y10S388/917

Abstract: An acceleration control circuit for a motor driven rotor which varies the voltage applied to the drive motor so as to achieve a desired rotor acceleration. The aforementioned control circuit includes a resistance means in circuit with the drive motor and means for short circuiting the resistance means under certain conditions of motor acceleration.

Abstract translation: 一种用于电动机驱动转子的加速控制电路，其改变施加到驱动电动机的电压以实现期望的转子加速度。 上述控制电路包括与驱动电动机电路的电阻装置和用于在电动机加速的某些条件下短路电阻装置的装置。

公开(公告)号：US3582743A

公开(公告)日：1971-06-01

申请号：US3582743D

申请日：1969-03-13

Applicant: SYCOR INC

Inventor： DIAZ GUILLERMO ,  WOOD ROBERT E ,  IRWIN SAMUEL N

IPC: G11B15/46 ,  G11B15/54 ,  G11B15/60 ,  G11B15/32

CPC classification number: G11B15/46 ,  G11B15/54 ,  G11B15/60 ,  Y10S388/907 ,  Y10S388/909 ,  Y10S388/93

Abstract: In a tape recorder/reproducer apparatus, particularly where a low-inertia highly responsive drive train is used, tape speed control means including a variable-speed motor for the drive train energized through a closed-loop servosystem in which the actual output speed of the motor is monitored by a sensor and compared to a reference, to closely control the motor speed in accordance with the reference. The reference is provided by a freely supported capstan which senses actual tape speed at the tape head and produces an output which is compared to a predetermined reference representative of the desired tape speed, such that the motor is servo controlled to satisfy a predetermined tape speed function.

公开(公告)号：US07279857B2

公开(公告)日：2007-10-09

申请号：US10650028

申请日：2003-08-27

Applicant: Samuel M. Babb ,  Jeffrey S. Weaver ,  James L. Yost ,  Garland E. Lee ,  Peter M. Piotrowski

Inventor： Samuel M. Babb ,  Jeffrey S. Weaver ,  James L. Yost ,  Garland E. Lee ,  Peter M. Piotrowski

IPC: H02P3/08

CPC classification number: H02P6/10 ,  Y10S388/907 ,  Y10S388/911

Abstract: A method for reducing commutation-related acoustic noise in a fan system is provided. A constant frequency periodic signal is generated and a fan commutation event is synchronized with a zero level value of the constant frequency periodic signal. A system for controlling a direct current fan is provided. The system comprises a signal generator adapted to produce a periodic signal of a constant frequency and a phase-locked loop. A zero level value of the periodic signal is synchronized with a commutation event of the fan.

Abstract translation: 提供了一种用于减少风扇系统中的换向相关声学噪声的方法。 产生恒定频率周期信号，风扇换向事件与恒定频率周期信号的零电平值同步。 提供一种用于控制直流风扇的系统。 该系统包括适于产生恒定频率的周期信号和锁相环的信号发生器。 周期信号的零电平值与风扇的换向事件同步。