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    • 2. 发明授权
    • Electric vehicle control
    • 电动车控制
    • US08326502B2
    • 2012-12-04
    • US12651292
    • 2009-12-31
    • Mark Snyder
    • Mark Snyder
    • H02P6/08B60L11/00
    • H02P6/182B60L15/2009B60L2240/16B60L2240/18B60W2520/105B60W2520/125F16H59/48F16H59/66F16H61/0213F16H2059/663Y02T10/644Y02T10/645Y02T10/646Y02T10/72Y02T10/7275
    • A method for controlling an electric vehicle includes computing an electric motor RPM based on a computed Back Electromotive Force (BEMF). Modern electric vehicle designs include intelligent control of the electric motors and transmissions to respond to operator controls and provide efficient operation to extend battery life. An accurate measure of motor RPM is required for such control. Various methods are available for obtaining motor RPM, but most require external sensors susceptible to damage from road debris and the like. The BEMF is proportional to motor speed and independent of motor load. The BEMF may further be computed from the difference between IR loss and motor voltage. The motor RPM is them computed from BEMF using data recorded for the individual motor.
    • 一种用于控制电动车辆的方法包括基于计算的反电动势(BEMF)计算电动机RPM。 现代电动汽车设计包括电动机和变速器的智能控制,以响应操作员控制,并提供有效的操作以延长电池寿命。 这种控制需要精确的电机转速测量。 各种方法可用于获得电机RPM,但是大多数需要外部传感器容易受到道路碎片等的损坏。 BEMF与电机转速成比例,与电机负载无关。 BEMF可以根据IR损耗和电机电压之间的差异进一步计算。 电机RPM是从BEMF使用为单个电机记录的数据计算的。
    • 9. 发明授权
    • Control of multi-speed transmission
    • 多速传输控制
    • US08374760B2
    • 2013-02-12
    • US12650396
    • 2009-12-30
    • Mark SnyderRonald A. Holland
    • Mark SnyderRonald A. Holland
    • G06F7/00G06F17/00G06F19/00
    • F16H61/0437F16H63/502F16H2061/0433
    • Apparatus and method for efficiently controlling an automatic transmission in an electric vehicle. The method may be implemented by selection of one of at least two belt clutches having different ratios. The timing for disengagement and engagement of each clutch and the proper sequencing of the disengagement and engagement of the clutches is determined to optimize the efficiency of the transmission. A direct drive motor is directly coupled to the transmission's output shaft to provide momentary power to maintain a nearly constant rate of acceleration during shifting. The method may further be applied for shifting an electric vehicle with a first motor coupled to an output shaft through a single belt clutch and a direct drive motor.
    • 用于有效地控制电动车辆中的自动变速器的装置和方法。 该方法可以通过选择具有不同比率的至少两个皮带离合器中的一个来实现。 确定每个离合器的脱离和接合的时间以及离合器的分离和接合的适当排序,以优化变速器的效率。 直接驱动电动机直接耦合到变速器的输出轴,以提供瞬时动力,以在变速期间保持几乎恒定的加速度。 该方法可以进一步应用于通过单个皮带离合器和直接驱动马达与耦合到输出轴的第一马达移动电动车辆。