A car-following control method for high-speed trains based on real-time calibration of safe vehicle distance

Abstract

The invention relates to a high speed train following operational control method based on safe interval real-time calibration. The method comprises the following steps of: (1) calculating an absolute safe interval through a rear train; (2) adjusting the safe interval according to an adopted braking mode; (3) comparing the safe interval with an actual interval, and judging whether an optimum following state exists or not, if yes, returning to the step (1), and executing circularly, and if no, carrying out a step (4); (4) selecting an optimum control strategy according to the actual interval and the safe interval; and (5), controlling a train according to the optimum control strategy, adjusting the actual interval to be behind the safe interval, returning to the step (1), and executing circularly. Compared with the prior art, according to the method, the dynamic information of high speed train following operation can be utilized to scientifically adjust following action within a full speed region range, and through dynamic control over the interval of the trains, the aims of safety and efficiency in following operation of the train are achieved.

Description

technical field [0001] The invention relates to the technical field of railway transport train operation control, in particular to a high-speed train follow-up operation control method based on real-time calibration of safe vehicle distances. Background technique [0002] At present, the train operation control (hereinafter referred to as "train control") technology in the field of rail transit around the world mainly includes two modes: hierarchical speed control and target distance speed control in terms of speed control methods. [0003] In the hierarchical speed control mode, a block partition is used as a unit, and the speed of the train is controlled according to the speed of the train. In this mode, the train tracking interval is mainly related to the division of block partitions, train performance and speed. Since the length of block partitions is determined by train performance and line parameters, subsequent trains may be allowed only when the block partition is fr...

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Problems solved by technology

[0014] (1) The continuous primary braking curve under the target distance speed control mode adheres to the principle of "safety first" and puts "braking" in the primary position of train operation control, but does not take into account the acceleration when driving efficiency should be improved operating conditions;

[0015] (2) The intelligent subject status of high-speed train behavior adjustment has not been fully reflected, which is a very important part of the train-following operation control in the moving block system

If the distance between the rear vehicle and the target point shows a trend of "expanding" again during the deceleration operation, it is obviously difficult to realize the scientific adjustment of the running state of the rear vehicle by only relying on the "continuous primary braking curve under the target distance speed control mode". To achieve the purpose of safe and efficient car-following operation

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