Accurate error estimation in electric motor sensors

Methods, apparatus, systems, and computer program products for estimating errors in an electric motor position sensor are disclosed. In a particular embodiment, during a first operating state of the electric motor, an electronic control unit (ECU) of the electric motor receives a first plurality of temporal samples of a first output signal from a position sensor, the first output signal representing a rotational position of the electric motor during the first state. An embodiment includes determining a first amplitude value for each of a first plurality of time samples of a first output signal, determining a first amplitude fluctuation value based on the plurality of first amplitude values, and determining a first absolute angle error based on the first amplitude fluctuation value. Embodiments also include determining an estimated error offset based on the first absolute angle error and storing the estimated error offset in a memory. 公开了用于估计电动马达位置传感器中的误差的方法、装置、系统和计算机程序产品。在特定实施例中，在电动马达的第一运行状态期间，电动马达的电子控制单元(ECU