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    • 1. 发明授权
    • Motor drive control
    • 电机驱动控制
    • US07015664B2
    • 2006-03-21
    • US11071534
    • 2005-03-03
    • Jeffrey Ronald ColesConnel Williams
    • Jeffrey Ronald ColesConnel Williams
    • H02P3/18
    • H02P6/185
    • A drive system for a three phase brushless motor uses an algorithm for position sensing which measures the inductance in the motor phases and determines the position from the measured inductances. In order to reduce acoustic noise, the inductances are measured during test periods Tsd, which are conducting states added to the PWM pattern in each PWM period. The test periods have net voltage of zero and therefore do not affect the output of the motor, but are sufficiently long to allow inductance measuring as well as the use of a single current sensor for current sensing.
    • 用于三相无刷电动机的驱动系统使用用于位置感测的算法,其测量电动机相位中的电感并且从测量的电感确定位置。 为了降低声学噪声,在每个PWM周期中加到PWM模式的导通状态的测试周期T s s测量电感。 测试周期的净电压为零,因此不影响电机的输出,但足够长以允许电感测量以及使用单个电流传感器进行电流检测。
    • 2. 发明授权
    • Rotor structures for motor
    • 电机转子结构
    • US07888831B2
    • 2011-02-15
    • US12296959
    • 2007-04-13
    • Andrew Lee CourtJeffrey Ronald Coles
    • Andrew Lee CourtJeffrey Ronald Coles
    • H02K11/00G01D5/12
    • H02K11/215H02K7/003
    • A rotor structure for a motor comprising a rotor having an end surface; a shaft extending from the end surface; an encoder member attached to the end surface of the rotor; and a coupler coupled to the shaft adjacent to the encoder member for coupling a further member to the shaft, in which the coupler surrounds the shaft and has a lip associated therewith, the lip extending from the coupler towards the encoder member so as to define a void between the coupler and the encoder member. The void defined by the rotor structure may act to contain matters such as swarf that is ejected from the rotor when the encoder member is fixed to the rotor. The rotor may be used in a motor of an electric power assisted steering (EPAS) system.
    • 一种用于电动机的转子结构,包括具有端面的转子; 从所述端面延伸的轴; 附接到所述转子的端面的编码器构件; 以及联接到所述轴的耦合到所述编码器构件的联接器,用于将另外的构件联接到所述轴,所述联接器围绕所述轴并具有与其相关联的唇部,所述唇缘从所述联接器朝向所述编码器构件延伸,以便限定 耦合器和编码器构件之间的空隙。 由转子结构限定的空隙可以用于包含当编码器构件固定到转子时从转子喷出的切屑等物质。 转子可用于电动辅助转向(EPAS)系统的电动机。
    • 9. 发明授权
    • Electrical power assisted steering systems
    • 电动辅助转向系统
    • US06351050B1
    • 2002-02-26
    • US09502743
    • 2000-02-11
    • Jeffrey Ronald Coles
    • Jeffrey Ronald Coles
    • H02K2112
    • B62D5/0403H02K1/2766
    • An electric motor of the brushless type is disclosed which is so constructed and arranged as to provide a low braking torque. An electric power steering system incorporating such a motor is also disclosed. In a preferred arrangement, the motor comprises an interior permanent magnet motor. An advantage of providing a motor which generates low levels of braking torque in the event of a fault is that a driver can easily turn the wheel of the vehicle in the fault condition against the motor. This reduces the requirements for motor fault protection.
    • 公开了一种无刷型的电动机,其被构造和布置成提供低的制动转矩。 还公开了一种并入这种电动机的电动助力转向系统。 在优选的布置中,马达包括内部永磁电动机。 提供在发生故障的情况下产生低水平的制动转矩的电动机的优点是驾驶员可以容易地将车辆的车轮在相对于电动机的故障状态下转动。 这减少了对电机故障保护的要求。