中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

5 records (took 0.014 seconds)

    Motor control for stopping a load and detecting mechanical brake slippage
    2.
    发明申请
    Motor control for stopping a load and detecting mechanical brake slippage 有权
    用于停止负载并检测机械制动器滑动的电机控制

    公开(公告)号：US20060113148A1

    公开(公告)日：2006-06-01

    申请号：US11002011

    申请日：2004-11-30

    Applicant: Robert DeLange ,  Timothy Rowan ,  Roman Lichon ,  Glenn Frazier ,  Lynn Cooksey

    Inventor： Robert DeLange ,  Timothy Rowan ,  Roman Lichon ,  Glenn Frazier ,  Lynn Cooksey

    IPC: B66B1/42

    CPC classification number: B66B5/0031 ,  B66B1/30

    Abstract: A method and apparatus for stopping an AC motor that is controlling a load while detecting mechanical brake slippage of a mechanical brake for holding the load against movement includes a controller for decreasing torque-producing current commands from the drive while a speed regulator is commanding zero speed, sensing movement of the load while the speed regulator is commanding zero speed, detecting movement of the load past a pre-determined distance limit, and increasing torque to support the load and prevent further movement of the load. The controller will again decrease torque-producing current commands from the drive, and again checking for movement of the load, and upon sensing no load movement upon reaching zero torque, then shutting off the motor.

    Abstract translation: 一种用于在检测用于保持负载抵抗运动的机械制动器的机械制动器滑动的同时控制负载的AC电动机的停止方法和装置包括用于在速度调节器指令零速度时减少来自驱动器的转矩产生电流命令的控制器 在速度调节器指令零速度时检测负载的运动，检测负载的运动超过预定的距离极限，以及增加转矩以支持负载并防止负载的进一步移动。 控制器将再次降低来自驱动器的扭矩产生电流指令，并再次检查负载的运动，并且在达到零转矩时检测到无负载运动，然后关闭电机。

    METHOD AND APPARATUS FOR RIPPLE AND PHASE LOSS DETECTION
    3.
    发明申请
    METHOD AND APPARATUS FOR RIPPLE AND PHASE LOSS DETECTION 有权
    用于纹波和相位损失检测的方法和装置

    公开(公告)号：US20140254217A1

    公开(公告)日：2014-09-11

    申请号：US13787291

    申请日：2013-03-06

    Applicant: Bing Li ,  David Leggate ,  Timothy Rowan

    Inventor： Bing Li ,  David Leggate ,  Timothy Rowan

    IPC: G01R21/06 ,  H02M5/458

    CPC classification number: G01R21/06 ,  G01R19/2513 ,  G01R31/42 ,  H02H7/1216 ,  H02H7/1255 ,  H02M1/14 ,  H02M1/32 ,  H02M5/4585

    Abstract: Methods and apparatus are presented for detecting phase loss and/or excessive ripple in a power converter, in which bandpass filters are used to obtain harmonic voltage amplitudes associated with the power converter DC bus, and phase loss is detected if a ratio of the second harmonic to the sixth harmonic and/or a ratio of the fourth harmonic to the sixth harmonic exceed predetermined threshold values.

    Abstract translation: 提出了用于检测功率转换器中的相位损耗和/或过大纹波的方法和装置，其中使用带通滤波器来获得与功率转换器DC总线相关联的谐波电压幅度，并且如果二次谐波的比率 到第六谐波和/或第四谐波与第六谐波的比率超过预定阈值。

    Transient inductance identifier for motor control
    4.
    发明授权
    Transient inductance identifier for motor control 失效
    瞬态电感识别器用于电机控制

    公开(公告)号：US5689169A

    公开(公告)日：1997-11-18

    申请号：US402288

    申请日：1995-03-10

    Applicant: Russel J. Kerkman ,  Jerry Thunes ,  David Schlegel ,  Timothy Rowan

    Inventor： Russel J. Kerkman ,  Jerry Thunes ,  David Schlegel ,  Timothy Rowan

    IPC: H02P21/14 ,  H02P7/00

    CPC classification number: H02P21/16 ,  G01R31/343

    Abstract: A method and apparatus used with a motor controller for determining transient inductance and rotor resistance upon commissioning of the motor. The estimator drives a single phase of the motor with an excitation current at an operating frequency, determines the d-q axis stator synchronous feedback voltages, divides the excitation current by 2 to produce a positive current signal, multiplies the operating frequency by the positive current signal to produce a current frequency signal and then divides the q-axis voltage feedback by the current frequency signal to produce the transient inductance estimate, divides the d-axis voltage feedback signal by the positive current signal and subtracts stator resistance estimate therefrom to obtain a rotor resistance estimate.

    Abstract translation: 一种与电动机控制器一起使用的方法和装置，用于在电动机调试时确定瞬变电感和转子电阻。 估计器以工作频率的励磁电流驱动电机的单相，确定dq轴定子同步反馈电压，将励磁电流除以2以产生正电流信号，将工作频率乘以正电流信号 产生电流频率信号，然后将q轴电压反馈除以当前频率信号以产生瞬态电感估计，将d轴电压反馈信号除以正电流信号，并从其中减去定子电阻估计值，以获得转子电阻 估计。

Patent Agency Ranking