Dual-mode switch based self-adaptive cruise control method for electric car

An adaptive cruise, electric vehicle technology, applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., can solve the problem of not guaranteeing safety, comfort and economy following the car, and not being able to truly respond to the driver's driving. characteristics and other issues, to achieve the effect of improving riding comfort and following performance, increasing safety and economy, and ensuring safety.

Active Publication Date: 2017-05-31
DALIAN UNIV OF TECH
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  • Abstract
  • Description
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Problems solved by technology

The current adaptive cruise control system designed for electric vehicles cannot truly reflect the driving characteristics of the driver during normal driving, and does not meet the

Method used

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  • Dual-mode switch based self-adaptive cruise control method for electric car
  • Dual-mode switch based self-adaptive cruise control method for electric car
  • Dual-mode switch based self-adaptive cruise control method for electric car

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Embodiment Construction

[0146] The present invention will be further described below in conjunction with the accompanying drawings. Such as Figure 4 As shown, the present invention constructs a smooth following mode and a fast approaching mode, and the relationship between the two modes is mutually exclusive. In order to obtain a smooth switching between the two modes of the adaptive cruise control system, a dual-mode switching rule. The dual-mode switching rule is based on the smooth following mode and fast approaching mode of the adaptive cruise control system, through the analysis of the driver's driving needs to establish the switching logic between the two modes, and make the adaptive cruise control The system automatically selects different control modes. Based on the dual-mode switching rules established by fuzzy reasoning, the inter-vehicle distance error and relative speed are selected as the input of fuzzy reasoning, and then the input variables are fuzzy. and by building as figure 1 T...

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Abstract

The invention discloses a dual-mode switch based self-adaptive cruise control method for an electric car. The method comprises steps as follows: establishing a stable car following mode; establishing a fast approaching mode; establishing a dual-mode switch rule for control moment distribution on the basis of fuzzy reasoning. According to the method, driving demands of a driver are summarized through analysis of actually measured microscopic driving NGSIM data collected by Federal Highway Administration combined with microscopic traffic simulation research scholars; the control rule of the fast approaching mode and the stable car following mode is constructed under a model prediction control frame, and a switch rule between the modes is made according to the fuzzy reasoning. A control mode of a self-adaptive cruise control system is closer to driving characteristics of a real driver and is more adaptive to complicated road conditions. The dual-mode switch based self-adaptive cruise control method for the electric car can really reflect demands for the stable car following mode, the fast approaching mode and the like of the driver in a normal driving process, and can guarantee safety, car following performance, comfort and economic efficiency of the car in a traveling process.

Description

technical field [0001] The invention belongs to the field of safety auxiliary driving and control of an electric vehicle, relates to the design of an adaptive cruise control strategy for an electric vehicle, and in particular relates to a dual-mode switching adaptive cruise control method for an electric vehicle. Background technique [0002] In recent years, as the production and sales of automobiles have increased year by year, problems such as environmental damage, traffic congestion, energy shortages, and casualties have become increasingly prominent, forcing the automobile industry to develop in the direction of environmental protection, safety, and intelligence. Based on its own characteristics, electric vehicles are easier to achieve the above goals than traditional vehicles. Therefore, the research and development of electric vehicles with more intelligence, long battery life and low energy consumption is the research and development focus of the entire industry. The...

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Application Information

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IPC IPC(8): B60W30/16B60W40/04G06F17/50
CPCB60W30/16B60W40/04G06F30/367
Inventor 郭烈乔彦夫林肖李君臣李琳辉岳明杨彪许林娜赵一兵
Owner DALIAN UNIV OF TECH
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