Driving assistance system and brake control unit and brake control method thereof

Abstract

The invention provides a driving assistance system and a brake control unit and a brake control method thereof. A brake control unit (130) according to the present invention includes: an acquisition module (131) configured to acquire driving states of a preceding vehicle and a host vehicle during a climbing period, with the driving states including at least speeds of the preceding vehicle and thehost vehicle and a distance between the preceding vehicle and the host vehicle; a processing module (132) configured to determine whether or not a driving assistance system (100) of the vehicle needsto perform braking on the vehicle based on the acquired driving state, when the vehicle is judged to be braked, acquire the target deceleration of the vehicle, calculate a first braking force item according to the target deceleration, and calculate a second braking force item according to the slope value of the road where the vehicle is located; and a braking force determining module (133) configured to determine a target braking force required by the driving assistance system (100) to brake the vehicle according to the first braking force item and the second braking force item.

Description

technical field [0001] The present application relates to the technical field of driving assistance, in particular to a driving assistance system, a braking control unit and a braking control method thereof. Background technique [0002] The driving assistance system uses various sensors installed on the vehicle to sense the surrounding environment at any time during the driving process of the vehicle, collect data, and perform systematic calculation and analysis, thereby effectively increasing the comfort and safety of vehicle driving. [0003] Adaptive Cruise Control (ACC) is an intelligent automatic control system in the driver assistance system. According to the technical solution of ACC, when the vehicle is running, the vehicle distance sensor (radar) installed in the front of the vehicle continuously scans the road ahead of the vehicle, and the wheel speed sensor obtains the vehicle speed signal at the same time. Controls the braking process of the vehicle. However, ...

AI Technical Summary

Problems solved by technology

However, existing ACCs usually suffer from poor noise, vibration and harshness (NVH) performance when controlling vehicle braking

Moreover, when the existing ACC controls the braking of the vehicle, it usually does not recognize whether the road the vehicle is on is a flat road or a sloped road, so that it cannot provide suitable braking control for the vehicle when the vehicle climbs and stops.

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