Single pedal mode control method of vehicle
A mode control, single-pedal technology, applied to vehicle components, arrangement of power plant control mechanisms, instruments, etc., can solve problems such as uncomfortable driving experience, irrelevant real-time status, and obscure energy recovery, to ensure controllability and safety. performance, quality driving experience, and the effect of quality driving experience
A mode control, single-pedal technology, applied to vehicle components, arrangement of power plant control mechanisms, instruments, etc., can solve problems such as uncomfortable driving experience, irrelevant real-time status, and obscure energy recovery, to ensure controllability and safety. performance, quality driving experience, and the effect of quality driving experience
CN111409450AActive Publication Date: 2020-07-14智新控制系统有限公司
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[0035] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments to facilitate a clear understanding of the present invention, but they do not limit the present invention.
[0036] Such as figure 1 As shown, the process flow of a single-pedal mode control method for a vehicle of the present invention is as follows:
[0037] Taking the balanced driving force of the vehicle at each speed range as the Z axis, taking the accelerator pedal opening as the Y axis, and taking the current speed as the X axis, a single-pedal mode control Map is constructed;
[0038] Set the exit threshold K% of the accelerator pedal opening associated with the single-pedal mode control Map;
[0039] If the opening of the accelerator pedal is less than K%, then the torque value of the Map is controlled in the single-pedal mode as the control torque of the single-pedal mode;
[0040] If the opening of the accelerator pedal is g...
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The invention relates to the technical field of vehicle control, in particular to a single pedal mode control method of a vehicle. The method comprises the steps: a single pedal mode control Map is constructed with the balance driving force of a vehicle in each vehicle speed section as the Z axis, the accelerator pedal opening degree as the Y axis and the current vehicle speed as the X axis; an exit threshold value K% of the single pedal mode control Map associated accelerator pedal opening degree is set; if the opening degree of the accelerator pedal is smaller than K%, the torque value of the single pedal mode control Map serves as the control torque of the single pedal mode; and if the accelerator pedal opening degree is larger than or equal to K%, the single-pedal mode is quitted, themaximum output torque corresponding to the current accelerator pedal opening degree is calculated through a normal driving algorithm according to the motor external characteristic curve, and the maximum output torque serves as the control torque of the vehicle. By means of the method, the single pedal mode is ensured to be quitted stably and rapidly when the urgent acceleration request of the driver is detected, corresponding driving force is provided to achieve driving actions such as acceleration overtaking or urgent avoidance, and controllability and safety of the vehicle are guaranteed.
Description
technical field [0001] The invention relates to the technical field of vehicle control, in particular to a single-pedal mode control method for a vehicle. Background technique [0002] Regenerative braking energy recovery is a significant advantage of new energy vehicles and an important way to improve cruising range. There are two energy recovery methods for new energy vehicles. One is to let the vehicle coast by releasing the accelerator pedal during driving to recover energy from coasting; the other is to step on the brake pedal during driving to recover braking energy. One-pedal mode (OPM), as the name implies, uses one pedal (accelerator pedal) to control the normal driving of the vehicle. Depress the accelerator pedal to control the vehicle to accelerate, and release the accelerator pedal to decelerate the vehicle with the braking force provided by coasting energy recovery. In this way, the vehicle can fully recover energy during driving, improve the cruising range, ...
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Patent Timeline
14 Jul 2020
Publication
CN111409450A
- IPC
- B60K26/02; G06F30/20; G06F30/15; G06F119/14
- CPC
- B60K26/02
- Inventors
- 谢桥; 郑春阳