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An electric vehicle adaptive cruising method- based on combined control of electric motor and ESC

A technology for adaptive cruise and electric vehicles, applied in electric vehicles, control drives, control devices, etc., can solve problems such as the inability to move the cruise system, achieve good human-computer interaction functions, reduce fatigue, and provide clear and reliable status prompts

Active Publication Date: 2018-12-11
ZHEJIANG LEAPMOTOR TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The motor has two modes of forward rotation and reverse rotation (reverse rotation is the energy recovery mode), so there are certain differences between it and the cooperative control of ESC compared with traditional fuel vehicles, and the cruise system of fuel vehicles cannot be directly transferred to electric vehicles use

Method used

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  • An electric vehicle adaptive cruising method- based on combined control of electric motor and ESC
  • An electric vehicle adaptive cruising method- based on combined control of electric motor and ESC
  • An electric vehicle adaptive cruising method- based on combined control of electric motor and ESC

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Embodiment

[0046] Embodiment: In this embodiment, an electric vehicle adaptive cruise method based on the joint control of the motor and ESC, the adaptive cruise system used is such as figure 1 As shown, the input of the system is a forward-looking system or millimeter-wave radar. The ACC controller includes three parts: signal diagnosis, mode judgment, and car following decision. The output is the target vehicle speed or target acceleration (deceleration) speed and the vision for prompting the ACC status Signal and auditory signal.

[0047] Adaptive cruise methods such as figure 2 As shown, including the following steps:

[0048] ① Input signal preprocessing: signal preprocessing of the relative position information and relative speed information of the target in front of the electric vehicle and the motion information of the electric vehicle itself to filter invalid signals.

[0049] ②Signal diagnosis: including fault signal diagnosis method and data validity diagnosis method;

[0050] The f...

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Abstract

The invention relates to an electric vehicle adaptive cruising method based on the combined control of an electric motor and an ESC. The method comprises the following steps: signal preprocessing is carried out on the relative position information and the relative speed information of the front target of the electric vehicle and the motion information of the electric vehicle itself; -the data andstate signals of sensors and actuators of electric vehicles are collected, and it is judged whether the current vehicle dynamic state is in the state that can turn on the adaptive cruise mode according to the definition of the adaptive cruise scenario. Combined with the signal diagnosis result and the driver's operation, the vehicle is judged to enter the adaptive cruise mode or exit the adaptivecruise mode. In the adaptive cruise mode, the vehicle maintains the target speed and distance by controlling the longitudinal acceleration or deceleration of the vehicle. The invention combines the control motor and the ESC of the electric vehicle to realize the adaptive cruise of the electric vehicle under the conditions of high speed and low speed, so that the fatigue feeling of the driver whendriving a long distance can be alleviated when necessary.

Description

Technical field [0001] The invention relates to the field of electric vehicle control, in particular to an electric vehicle adaptive cruise method based on the joint control of a motor and an ESC. Background technique [0002] Intelligence is one of the important trends in the development of the automotive industry today, and now it has become one of the R&D priorities in the field of new energy vehicles. The vehicle cruise system can replace the driver in the longitudinal operation of the vehicle under specific working conditions, thereby freeing the driver's feet and reducing the fatigue of long-distance driving. The cruise system of fuel vehicles has gradually developed from the initial high-speed constant-speed cruise mode (CC) to a more automated adaptive cruise mode (ACC) such as low-speed following and distance maintenance. The active safety performance of the car has been continuously improved, and the driving experience in the corresponding mode has also been improved. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L15/20
CPCB60L15/20B60L2240/12B60L2240/14B60L2260/32Y02T10/72
Inventor 缪其恒金智王江明许炜
Owner ZHEJIANG LEAPMOTOR TECH CO LTD
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