Low-speed self-adaptive cruise control system and method

Abstract

The invention discloses a low-speed self-adaptive cruise control system and a low-speed self-adaptive cruise control method. The low-speed self-adaptive cruise control system comprises an ultrasonic radar set, a central control module connected with the ultrasonic radar set as well as an electronic power-assisted steering system, a vehicle body electronic stabilization system, an engine management system, an automatic gearbox control unit, a human-computer interface module and a gradient sensor which are connected with the central control module. The central control module plans a running route of a vehicle according to obstacle information and information on rotation angles of a steering wheel, and judges whether or not the vehicle needs to be subjected to acceleration control or deceleration control. If the acceleration control is needed, the target torque is calculated and transmitted to the engine management system, and then the engine management system responds to torque control and controls the vehicle to accelerate; and if the deceleration control is needed, a target deceleration rate is calculated and transmitted to the vehicle body electronic stabilization system, and then the vehicle body electronic stabilization system outputs corresponding brake master cylinder pressure and controls brake discs to brake and decelerate. According to the low-speed self-adaptive cruise control system and the low-speed self-adaptive cruise control method, the low-speed (the vehicle speed is smaller than 5km / h) self-adaptive cruise of the vehicle can be realized.

Description

technical field [0001] The invention belongs to an automobile cruise system, and in particular relates to a low-speed self-adaptive cruise control system and method. Background technique [0002] Adaptive cruise control system (ACC) is based on constant speed cruise control technology plus distance control logic, and adaptively adjusts the vehicle speed according to the vehicle distance measured by the radar to adapt to different traffic conditions. Typically, existing adaptive cruise control systems can only operate above a certain vehicle speed, eg 25mph, or above. [0003] Therefore, it is necessary to develop a low-speed adaptive cruise control system and method. Contents of the invention [0004] The purpose of the present invention is to provide a low-speed adaptive cruise control system and method, which can realize the adaptive cruise of the vehicle at low speed (vehicle speed<5KM / H). [0005] A low-speed adaptive cruise control system according to the present...

AI Technical Summary

Problems solved by technology

Typically, existing adaptive cruise control systems can only operate above a certain vehicle speed, eg 25mph, or above

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