07-01-2021 дата публикации
Номер: US20210001851A1
Принадлежит:
A method for vehicle following control based on the real-time calculation of dynamic safe following distance. A preset vehicle deceleration model with three preset behavior adjustment parameters is used to obtain the absolute braking distance models of the leading and following vehicles, then to further establish the dynamic safe following distance model for calculating the dynamic safe following distance between the following vehicle and the leading vehicle in real time. In the process of vehicle following operation, the current dynamic safe following distance is compared with the current actual following distance to determine whether to adjust the following behavior of the following vehicle and how to control the following vehicle to move in safety, efficiency and smoothness. 2. The method of claim 1 , wherein in step (3) claim 1 , the dynamic safe following distance model established in step (1.5) is used to calculate in real time the current dynamic safe following distance between the following vehicle and the leading vehicle; the dynamic safe following distance model is described as follows:{'br': None, 'i': S', 'v', 't', 'v', 't', 'g', 'v', 't', 'cg', 'v', 't', 's, 'sup': f', 'p', 'f', 'p, 'sub': f', 'p, '((),())=(())−(())+Δ\u2003\u2003(3);'}{'sup': f', 'p', 'f', 'p', 'f', 'f', 'p', 'p, 'sub': f', 'p, 'wherein S(v(t), v(t)) is a function which can be used to calculate in real time the current safe following distance between the following vehicle and the leading vehicle under the current preset control requirement; v(t) is the current velocity of the following vehicle; v(t) is the current velocity of the leading vehicle; g(v(t)) is an absolute braking distance model of the following vehicle when it starts to brake at an initial velocity v(t); g(v(t)) is an absolute braking distance model of the leading vehicle when it starts to brake at an initial velocity v(t); Δs is a distance margin designed for eliminating calculation error to keep the following vehicle ...
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