Method and device for controlling vehicle

Abstract

The invention relates to a method and device for controlling a vehicle. The method comprises acquiring a plurality of first rotational speed values of a motor of the vehicle during a preset period of time, acquiring a plurality of first output torque values of the motor during the preset period of time, determining whether the vehicle is in a first-gear wobble state based on the plurality of first rotational speed values and the plurality of first output torque values, collecting a current rotational speed of the motor and determining a second rotational speed of the motor according to the current rotational speed and a preset acceleration if the vehicle is in the first-gear wobble state, acquiring a first output torque variation value of the motor during a control period, obtaining a second output torque variation value according to the first output torque variation value and a preset parameter, and controlling the motor to operate at the second rotational speed and the second output torque variation value. Therefore, the method can effectively restrain the wobble of rotational speed and output torque of the motor of the vehicle, so as to improve the experience for users.

Description

technical field [0001] The present disclosure relates to the field of control, in particular, to a method and device for vehicle control. Background technique [0002] When the electric vehicle just started, due to the large-scale changes in the output torque of the motor, the motor speed also has a large-scale change, which in turn causes the electric vehicle to vibrate, making the user feel a sense of jitter during driving. User experience effect. [0003] At present, when it is determined that the electric vehicle is in the state of starting jitter, the speed is smoothed through a smoothing algorithm (such as multiple sampling averaging, low-pass filtering, or output limiting, etc.), but the smoothing algorithm can only weaken the speed. The vibration at this speed cannot be eliminated, so that the user still feels uncomfortable during driving. Contents of the invention [0004] In order to solve the problems existing in the prior art, the present disclosure provides ...

AI Technical Summary

Problems solved by technology

[0002] When the electric vehicle just started, due to the large-scale changes in the output torque of the motor, the motor speed also has a large-scale change, which in turn causes the electric vehicle to vibrate, making the user feel a sense of jitter during driving. user experience effect

[0003] At present, when it is determined that the electric vehicle is in the state of starting jitter, the speed is smoothed through a smoothing algorithm (such as multiple sampling averaging, low-pass filtering, or output limiting, etc.), but the smoothing algorithm can only weaken the speed. Vibration, the vibration at this speed cannot be eliminated, so that the user still feels uncomfortable during driving

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