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Accelerator pedal self-adaptive control method and system based on vehicle speed

An adaptive control and accelerator pedal technology, applied in vehicle testing, power plant control mechanism layout, vehicle components, etc., to achieve the effects of strong applicability, easy modular management, and simple control

Pending Publication Date: 2022-06-28
南京智电汽车研究院有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Due to the above defects in the prior art, the present invention provides a speed-based accelerator pedal adaptive control method and system to solve the problem of how to make the accelerator opening better adapt to the driver's driving experience under different working conditions

Method used

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  • Accelerator pedal self-adaptive control method and system based on vehicle speed
  • Accelerator pedal self-adaptive control method and system based on vehicle speed
  • Accelerator pedal self-adaptive control method and system based on vehicle speed

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Embodiment

[0036] like figure 1 As shown, a vehicle speed-based accelerator pedal adaptive control method includes the following steps:

[0037] S1. Based on the vehicle parameters, according to the external torque characteristic curve of the vehicle, calibrate the pedal-vehicle speed curve, evenly divide the vehicle torque at 0-100% accelerator opening, load the vehicle coasting resistance curve for testing, and correct the pedal-vehicle speed curve;

[0038] S2. Maintain the accelerator opening at different vehicle speeds and at a constant speed, and draw the speed-accelerator curve of the driver at a constant speed. The accelerator becomes larger as the vehicle speed increases;

[0039] S3, based on drivability and pedal feedback force feeling, obtain driving comfort zones with different accelerator opening degrees; according to the driving comfort zone, the vehicle speed is divided into three zones: low speed, medium speed and high speed;

[0040] S4. Use an offset module for accel...

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Abstract

The invention discloses an accelerator pedal self-adaptive control method and system based on vehicle speed, and the method comprises the steps: obtaining driving comfort intervals of different accelerator opening degrees based on drivability and pedal feedback force feeling; dividing the vehicle speed into a low-speed section, a medium-speed section and a high-speed section according to the driving comfort section; an offset module for correcting the accelerator opening degree is used for randomly correcting the accelerator opening degree in any interval of low speed, medium speed and high speed; and according to different driving modes, the opening degree of the accelerator is finely adjusted again, and accelerator-torque control curves of low-speed, medium-speed and high-speed driving are obtained by combining the torque output two-dimensional tables of the different driving modes. Based on an existing vehicle control unit, no extra hardware cost needs to be added; the accelerator opening degree in any interval of low speed, medium speed and high speed can be corrected at will, and high flexibility is achieved; calibration is convenient, and only a vehicle road test certificate is needed; the original driving feeling is improved and the driving fatigue is reduced.

Description

technical field [0001] The invention relates to the technical field of new energy vehicles, in particular to a vehicle speed-based accelerator pedal adaptive control method and system. Background technique [0002] At present, most software strategies for new energy vehicles are to check the pedal-vehicle speed curve Pedmap according to the vehicle speed and accelerator opening to obtain the required torque. The accelerator opening 0-100% corresponds to the minimum torque to the maximum torque at the current speed of the vehicle, and any accelerator opening The corresponding torque can be calibrated. However, this strategy has significant limitations: [0003] (1) At a fixed speed, the acceleration feeling of the vehicle is determined according to the depth of the accelerator pedal. Because the torque span is too large, the software calibration can only ensure the drivability of a certain segment of the accelerator; [0004] (2) When the resistance and weight of the vehicl...

Claims

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Application Information

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IPC IPC(8): B60K26/02G01M17/007G01M13/00
CPCB60K26/02G01M17/007G01M13/00B60K2026/024
Inventor 王超赵水平李超石江江
Owner 南京智电汽车研究院有限公司
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