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    • 8. 发明授权
    • Method and apparatus for calibrating and initializing an electronically commutated motor
    • 用于校准和初始化电子换向电机的方法和装置
    • US06826499B2
    • 2004-11-30
    • US10232356
    • 2002-08-30
    • Mark P. ColoskySteven J. Collier-HallmanRoy McCannPhillip WeilhammerJames Charles Tallant, II
    • Mark P. ColoskySteven J. Collier-HallmanRoy McCannPhillip WeilhammerJames Charles Tallant, II
    • H02P118
    • H02P6/20H02P6/182H02P2209/07
    • Disclosed herein is a method and system for initializing a rotating device such as an electronically commutated electric machine. The system comprises: an electric machine; a position sensor subsystem operatively connected to the electric machine configured to measure a position and transmit a position signal to a controller. The controller executes a method initializing position for the electric machine, the method comprising: establishing a sensor subsystem datum indicative of a measurement reference point for a sensor subsystem; obtaining a calibration value corresponding to a distance to a selected magnetic reference position for the electric machine, relative to the sensor subsystem datum; and measuring a position and calculating a position delta relative to an initial reference. The method also includes: estimating an offset from the sensor subsystem datum to an initial reference; determining an absolute position estimate of the electric machine relative to the magnetic reference position. The absolute position estimate is responsive to the calibration value, the position delta, and the offset from the sensor subsystem datum to the initial reference.
    • 这里公开了一种用于初始化诸如电子换向电机的旋转装置的方法和系统。 该系统包括:电机; 操作地连接到电机的位置传感器子系统被配置成测量位置并将位置信号传送到控制器。 所述控制器执行所述电机的方法初始化位置,所述方法包括:建立指示传感器子系统的测量基准点的传感器子系统数据; 相对于传感器子系统数据获得对应于电机的选定磁参考位置的距离的校准值; 并且测量位置并计算相对于初始参考的位置增量。 该方法还包括:估计从传感器子系统数据到初始参考的偏移; 确定电机相对于磁参考位置的绝对位置估计。 绝对位置估计响应于校准值,位置增量和从传感器子系统基准到初始参考的偏移量。
    • 9. 发明授权
    • Electric power steering system, controller, and method of operation
    • 电动助力转向系统,控制器及操作方法
    • US08051945B2
    • 2011-11-08
    • US12434891
    • 2009-05-04
    • Steven J. Collier-HallmanDaniel W. Shafer
    • Steven J. Collier-HallmanDaniel W. Shafer
    • B62D5/04
    • B62D5/0484B62D5/046
    • An electric power steering system for a vehicle includes a motor for providing assistance in turning the wheels of the vehicle. The motor is electrically connected to a controller. The controller includes a power device, such as a power transistor, electrically connected to the motor to variably provide electric power to the motor as needed. The controller also includes a gate drive device electrically connected to the power device for regulating operation the power device. A shutdown mechanism is electrically connected between the gate drive device and a power input. In the event of a fault, the shutdown mechanism isolates electrical power from the gate drive device. This prevents the power device from providing electric power to the power steering motor.
    • 用于车辆的电动助力转向系统包括用于提供车辆转向车轮辅助的电动机。 电机电连接到控制器。 控制器包括电连接到电动机的功率器件,例如功率晶体管,以根据需要向电动机可变地提供电力。 控制器还包括电连接到功率器件的栅极驱动器件,用于调节功率器件的操作。 关闭机构电连接在栅极驱动装置和电源输入之间。 在发生故障的情况下,关闭机构将隔离来自栅极驱动装置的电力。 这防止了动力装置向动力转向电动机提供电力。
    • 10. 发明授权
    • Electric circuit board current sensor
    • 电路板电流传感器
    • US4893073A
    • 1990-01-09
    • US303702
    • 1989-01-30
    • Brian P. McDonaldSteven J. Collier-Hallman
    • Brian P. McDonaldSteven J. Collier-Hallman
    • G01R15/20G01R31/315H05K1/18
    • G01R31/315G01R15/207H05K1/18Y10T29/4902Y10T29/4913
    • An electric circuit board has a current trace thereon and a notch in the edge and an opening therethrough on opposite sides of the trace. A magnetic sensor is retained in the opening; and a flux member retained by the notch and opening forms a magnetic circuit around the current trace to concentrate current induced flux through the magnetic sensor. The flux member is made of a ductile magnetic material and is therefore easy to manufacture and handle without breakage compared to prior art ferrite flux members. It is also resilient so as to permit a "snap-on" design for ease of assembly with positive retention of the flux member on the board and of the magnetic sensor within the opening with minimal series air gap. The flux member further has high internal eddy current and hysteresis losses for inherent high frequency filtering to reduce aliasing distortion in sensor output to digital apparatus when applied to a measurement of PWM motor current.
    • 电路板上有一个电流迹线,边缘上有一个槽口,在轨迹的相对两侧有一个开口。 磁性传感器保持在开口内; 并且由凹口和开口保持的磁通构件在电流迹线周围形成磁路,以将电流感应磁通集中在磁传感器上。 磁通构件由延性磁性材料制成,因此与现有技术的铁氧体助焊剂构件相比,易于制造和处理而不会破损。 它也是弹性的,以便允许“卡扣式”设计以便于组装,其中助焊剂部件正确地保持在板上,并且具有最小的串联气隙的开口内的磁传感器。 磁通部件还具有高内部涡电流和滞后损耗,用于固有的高频滤波,以减少传感器输出到数字设备时的混叠失真,当应用于PWM电机电流的测量时。