Automotive self-adaptive cruising system with multi-mode switching system and control method thereof

Abstract

The invention discloses an automotive self-adaptive cruising system with a multi-mode switching system and a control method thereof. The system is divided into three layers of control structures including a mode switching layer, an upper-layer controller and a low-layer controller; a set of automobile traveling mode comprehensively arbitrating and switching mechanism is designed in the mode switching layer and is used for picking out the ideal working mode which is most suitable for the current traveling working condition from ten control modes. The ten control modes include the constant-speed cruising mode, the steady-state automobile following mode, the front automobile approaching mode, the urgent acceleration mode, the forcible deceleration mode, the curve mode, the lane changing assisting mode, the collision avoidance mode, the doubling mode and the switching-out mode. The upper-layer controller is responsible for specifically achieving the corresponding control mode and conducting continuous handling before an expected accelerated speed is output so as to avoid sudden change of the accelerated speed; the lower-layer controller is responsible for tracking the expected accelerated speed by controlling an execution mechanism of the automobile. According to the automotive self-adaptive cruising system with the multi-mode switching system and the control method thereof, the multi-mode switching system is adopted, in this way, the automotive self-adaptive cruising system can be better adapted to a complicated traveling environment, and the acceptability of drivers is improved.

Description

technical field [0001] The invention relates to an automobile driver assistance system, in particular to an automobile adaptive cruise system and a control method thereof, which has ten control modes and can adapt to complex driving modes and typical driver characteristics. Background technique [0002] As a typical representative of automotive driver assistance systems, adaptive cruise system (ACC) relies on on-board information sensors to obtain road traffic information ahead, and carries out corresponding longitudinal automatic driving control of the vehicle based on the movement of road targets, so it can replace the driver's Accelerator and brake operation. So far, the ACC system has gone through three stages of development: the first stage is mainly aimed at the simple highway environment, and only has the basic functions of maintaining a safe distance and cruising at a constant speed. In the second stage, the working range of ACC can be extended to urban low-speed mo...

AI Technical Summary

Problems solved by technology

How to establish the corresponding optimized control mode and its switching mechanism under the multi-mode hierarchical framework is the key to solve the applicability of the ACC system in complex road environments.

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