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    • 1. 发明授权
    • Method of determining speed of rotation of squirrel-cage motor and a computer software product to carry out the method
    • 确定鼠笼式电动机的旋转速度和计算机软件产品执行方法的方法
    • US06671639B2
    • 2003-12-30
    • US10233586
    • 2002-09-04
    • Kari SaarinenMichal Orkisz
    • Kari SaarinenMichal Orkisz
    • G01P346
    • G01P3/48
    • The present invention relates to a method of determining a speed of rotation of a squirrel-cage motor, wherein samples from the current taken by the squirrel-cage motor are collected by an electric current measuring device at a predetermined sampling frequency for a measurement period, the samples being stored as measurement data of a fixed format. The method is characterized by comprising the step of determining the rotation speed of the squirrel-cage motor from the measurement data by determining the base frequency and side frequencies of the electric current taken by the squirrel-cage motor, the rotation speed frequency of the squirrel-cage motor being obtained by subtracting the lower side frequency from the higher side frequency and by dividing the difference thus obtained by two.
    • 本发明涉及一种确定鼠笼式马达旋转速度的方法,其中由鼠笼式马达取得的电流的样本由电流测量装置以预定的采样频率在测量周期内收集, 样本被存储为固定格式的测量数据。 该方法的特征在于包括以下步骤:通过确定鼠笼式马达所采用的电流的基准频率和侧面频率,测量数据确定鼠笼式马达的转速,松鼠的转速频率 电动机通过从较高侧频率减去下侧频率并将由此获得的差除以二而获得。
    • 2. 发明授权
    • Method and device for determining the rotational speed of a polyphase machine operating with field orientation and without a sensor
    • 用于确定以场定向和没有传感器操作的多相机的转速的方法和装置
    • US06385555B1
    • 2002-05-07
    • US09308016
    • 1999-08-13
    • Frank HoffmannManfred Depenbrock
    • Frank HoffmannManfred Depenbrock
    • G01P346
    • H02P21/28H02P21/18
    • The invention relates to A method for determining a rotational velocity of a transducerless polyphase machine that is operated in a field-oriented manner, a stator-current model space vector and a conjugate complex reference space vector being calculated using a complete machine model, and the torques-active and dummy variables being measured from these model space vectors and from the measured stator-current actual space vector, from which active and dummy variables, in each case, a system deviation is determined. These measured system deviations are weighted and finally totaled, this total system deviation being used for adjusting the model rotor angular velocity such that the total system deviation becomes zero. Thus a method for determining the rotational velocity of a transducerless polyphase machine that is operated in a field-oriented manner is possible, breakdown protection being assured.
    • 本发明涉及一种用于确定以场定向方式操作的无转子多相机的旋转速度的方法,使用完整机器模型计算的定子 - 电流模型空间矢量和共轭复基准空间矢量, 从这些模型空间矢量和测量的定子 - 电流实际空间矢量测量扭矩活动和虚拟变量,确定每个情况下的有效和虚拟变量的系统偏差。 这些测量的系统偏差被加权并最终总计,这个总系统偏差用于调整模型转子角速度,使得总系统偏差变为零。 因此,可以确定以场取向的方式操作的无转子多相机的旋转速度的方法,确保击穿保护。
    • 3. 发明授权
    • Device for sensing eddy currents in moving bodies
    • 用于感测移动体涡流的装置
    • US06326777B2
    • 2001-12-04
    • US09098390
    • 1998-06-16
    • William A. Penny
    • William A. Penny
    • G01P346
    • G01P3/49G01P3/505G01P15/003G01P15/005
    • A device for sensing velocity variations in a conductive body 10 moving through a magnetic gap 12 between two discrete portions 13, 14 of a magnetic circuit 15. The magnetic circuit 15 generates a magnetic flux 16 in the gap 12 to induce eddy currents 17 in the body 10 moving through the gap. The device includes an eddy current sensor defining at least one further gap 24 through which the body 10 is also moved, and at least one sensor coil 18. A voltage is induced in the coil by variations in the induced eddy currents. The voltage is detectable; providing an indication of variations, that is to say accelerations or decelerations, in velocity by providing two discrete magnetic circuit portions, the size and weight of the device be reduced while enhancing the ability to sense eddy currents. The device may be used in a vehicle to sense vibration, acceleration, or other motion.
    • 用于感测通过磁路15的两个离散部分13,14之间的磁隙12移动的导电体10中的速度变化的装置。磁路15在间隙12中产生磁通量16,以在 身体10移动通过间隙。 该装置包括涡流传感器,其限定至少一个另外的间隙24,主体10也通过该间隙移动,以及至少一个传感器线圈18.通过感应涡流的变化在线圈中感应出电压。 电压是可检测的 通过提供两个分立的磁路部分提供速度变化的指示,即加速度或减速度,减小装置的尺寸和重量,同时增强感测涡流的能力。 该装置可以用于车辆中以感测振动,加速度或其它运动。
    • 4. 发明授权
    • Input circuit for inductive engine speed sensor
    • 感应式发动机转速传感器的输入电路
    • US06777925B1
    • 2004-08-17
    • US10009594
    • 2002-07-22
    • Thomas Seidenfuss
    • Thomas Seidenfuss
    • G01P346
    • G01P3/487G01P3/4802G01P3/488
    • A circuit for inputting and processing a signal from a speed sensor element, includes a comparator having first and second input terminals and first and second input circuits connected to receive the signal. The first input circuit is connected to a first input terminal of said comparator, and the second input circuit is connected to a reference voltage and to the second input terminal of said comparator. A switchable voltage divider circuit interruptibly connecting a voltage divider circuit for reducing an amplitude of the signal on said first input circuit; and a microprocessor is connected to receive and process an output of the comparator and to determine a speed value based thereon. The microprocessor controls switchable voltage divider based on the magnitude of determined vehicle speed.
    • 用于输入和处理来自速度传感器元件的信号的电路包括具有第一和第二输入端的比较器以及连接以接收该信号的第一和第二输入电路。 第一输入电路连接到所述比较器的第一输入端,第二输入电路连接到参考电压并连接到所述比较器的第二输入端。 一种可切换分压器电路,其可中断地连接分压器电路,以减小所述第一输入电路上的信号幅度; 并且连接微处理器以接收和处理比较器的输出并且基于此来确定速度值。 微处理器基于确定的车速的大小来控制可切换分压器。
    • 8. 发明授权
    • Apparatus and method for detecting the rate of rotation of DC spindle motor
    • 用于检测直流主轴电机转速的装置和方法
    • US06366077B1
    • 2002-04-02
    • US09519418
    • 2000-03-06
    • Young-han Kim
    • Young-han Kim
    • G01P346
    • G01P3/48
    • An apparatus and method for detecting a rate of rotation of a DC spindle motor without using an additional frequency generation (FG) signal generator in electronic equipment using the DC spindle motor. The apparatus detects the rate of rotation of a DC motor based on a current applied to the DC motor without using an additional FG signal generator in electronic equipment employing the DC motor and performs control corresponding to a detected result, thereby lowering costs and improving a manufacturing process in comparison with a conventional method employing a brushless motor to detect the rate of rotation of a motor.
    • 一种用于在不使用使用直流主轴电动机的电子设备中使用附加频率产生(FG)信号发生器的情况下检测直流主轴电动机的转速的装置和方法。 该设备基于在直流电动机上施加的电流而检测直流电动机的旋转速度,而不使用采用直流电动机的电子设备中的附加FG信号发生器,并且执行对应于检测结果的控制,从而降低成本并改善制造 与使用无刷电动机检测电动机的转速的传统方法相比。