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Method and device for controlling torque of electric automobile

An electric vehicle, torque technology, applied in electric vehicles, control devices, control drives, etc., can solve problems such as insufficient torque control

Active Publication Date: 2017-12-19
BORGWARD AUTOMOTIVE CHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present disclosure provides a method and device for controlling the torque of an electric vehicle to solve the problem in the related art that the torque control of the electric vehicle is not accurate enough in the state of constant speed cruise

Method used

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  • Method and device for controlling torque of electric automobile
  • Method and device for controlling torque of electric automobile
  • Method and device for controlling torque of electric automobile

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Embodiment Construction

[0043] Specific embodiments of the present disclosure will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present disclosure, and are not intended to limit the present disclosure.

[0044] An exemplary embodiment of the present disclosure proposes a method for controlling the torque of an electric vehicle. By optimizing the parameter settings in the proportional-integral controller, the problem of inaccurate torque control of the electric vehicle in the constant-speed cruising state in the related art is solved. , to enhance the driving experience of electric vehicles. Such as figure 1 As shown, the method includes:

[0045] Step S11, according to the current vehicle speed of the electric vehicle and the speed difference between the current vehicle speed and the target vehicle speed of the electric vehicle in the constant speed cruise ...

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Abstract

The invention provides a method and device for controlling a torque of an electric automobile. The method and device for controlling the torque of the electric automobile aim to solve the problem that in the relevant technology, torque control is not accurate enough when the electric automobile is in the cruise control state. The method comprises the steps that a proportional parameter and an integral parameter of a proportional integral controller are determined according to a current vehicle speed of the electric vehicle and a speed difference value between the current vehicle speed and a target vehicle speed when the electric automobile is in the cruise control state; the speed difference value is input into the proportional integral controller to obtain the compensation torque; and an output torque when the electric automobile is in the cruise control state is determined according to the compensation torque.

Description

technical field [0001] The present disclosure relates to the field of electric vehicles, and in particular, to a method and device for controlling torque of an electric vehicle. Background technique [0002] Cruise control is a relatively common function on mid-to-high-end vehicles in recent years. The driver can set the target vehicle speed and turn on the cruise control function by operating the cruise control buttons on both sides of the steering wheel. After the cruise control is turned on, ideally the vehicle can travel at a constant speed at the target speed. Through this function, the driver does not need to step on the accelerator pedal for a long time at high speed, which can reduce driving fatigue. [0003] In related technologies, the vehicle controller can adjust the output torque of the motor in real time through a PI (Proportion Integration, proportional integral) controller according to the current speed of the electric vehicle and the target speed under con...

Claims

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Application Information

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IPC IPC(8): B60W30/14B60W10/08B60W40/105B60L15/28
CPCB60L15/28B60L2240/423B60W10/08B60W30/146B60W40/105B60W2050/002B60W2050/0043B60W2520/10B60W2710/083Y02T10/72
Inventor 严二冬
Owner BORGWARD AUTOMOTIVE CHINA CO LTD
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