公开(公告)号：US20240416761A1

公开(公告)日：2024-12-19

申请号：US18704792

申请日：2022-10-28

Applicant: Atieva, Inc.

Inventor： Aditya Chetty ,  Vivek Attaluri

IPC: B60L15/20

Abstract: A method comprises: applying, by a motor controller of an electric motor, a bandpass filter to a signal from a sensor on a rotor of the electric motor, the signal indicating rotational speed of the rotor to detect a torsional oscillation or vibration in a driveline of the electric motor to be attenuated; providing the filtered signal to a proportional derivative controller configured for disturbance rejection; generating, by the proportional derivative controller, an attenuation signal for attenuating the torsional oscillation or vibration in the driveline; combining the attenuation signal with a driver torque command signal to produce a combined torque command signal, the driver torque command signal indicating an amount of torque requested from the electric motor; and producing torque with the electric motor based on the combined torque command signal.

公开(公告)号：US20250001874A1

公开(公告)日：2025-01-02

申请号：US18703991

申请日：2022-10-25

Applicant: Atieva, Inc.

Inventor： Aditya Chetty ,  Florian Dianoux

IPC: B60L15/20 ,  G01H1/00

Abstract: In a general aspect, a method can include applying. by a motor controller, a filter to a signal indicating rotational speed of an electric motor to detect an order of vibration of the electric motor to be attenuated. The method can also include providing the filtered signal to a proportional derivative controller, and generating, by the proportional derivative controller, an attenuation signal for attenuating vibration associated with the detected order of vibration. The method can still further include combining the attenuation signal with a torque command signal to produce a combined torque command signal. The torque command signal can indicate an amount of torque requested from the electric motor. The method can further include producing torque with the electric motor based on the combined torque command signal.