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Automatic train control method
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A train automatic control and train technology, applied in the direction of automatic systems, etc., can solve problems such as increasing energy consumption, reducing parking accuracy, destroying ride comfort, etc., to avoid emergency operations, improve driving efficiency, and facilitate smooth operation.
Active Publication Date: 2012-07-11
TRAFFIC CONTROL TECH CO LTD
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However, this method also has certain defects: because the speed control is carried out according to the pre-arranged driving curve, and the fixed coasting, traction and braking control modes are added to control the train operation
However, this method also has some defects: ① The acquisition of empirical knowledge mainly relies on manual transplantation. Sometimes people have a superficial understanding of the control process, and it is difficult to sum up a complete experience. The control rules and empirical knowledge obtained in this way are very rough and incomplete. ;②Intelligent control belongs to predictive control, with a certain hysteresis. For systems with large delays, the control algorithm has certain defects
The hysteresis shown by this control is not conducive to the smooth operation of the train, and the sudden braking also destroys the ride comfort, while increasing energy consumption and reducing parking accuracy
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Embodiment 1
[0077] The two sides of train and ground set communication period as 200ms, and the threshold threshold threshold that continuous packet loss can account for the maximum allowable continuous packet loss is set as 1 / 2, assuming that the train is accelerating under the effect of secondary traction at this moment; then use the train of the present invention to automatically The control method controls the train, comprising the following steps:
[0078] Step 11. According to the distance information of the target ahead received by the train in the latest cycle, combined with its current driving speed, traction acceleration and line data information, the train calculates the maximum allowable communication interruption time that does not trigger the emergency braking trigger line at present as t 1 ;
[0079] The route data information includes road condition information, such as whether the driving road is flat or uphill or downhill;
[0080] Step 12. According to the communicatio...
Embodiment 2
[0091] Both the train and the ground set the communication cycle to 200ms in advance, and the threshold threshold of continuous packet loss that can account for the maximum allowable continuous packet loss is set to 1 / 2, assuming that the train is coasting in the section at this time;
[0092] Step 31. According to the distance information of the target ahead received by the train in the latest cycle, combined with the current driving speed, running deceleration and line data information, the train calculates that the maximum communication interruption time allowed when the emergency braking trigger line is not triggered is t 1 ;
[0093] Step 32, corresponding to the communication period of 200ms, set t 1 Converted to the current maximum number of consecutive packet loss allowed is t 1 / 0.2=5t 1 indivual;
[0094] Step 33, when a communication interruption occurs at this time, the vehicle-mounted communication device records the communication interruption time, and converts ...
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Abstract
The invention discloses an automatic train control method, comprising the steps of: recording occurring communication interruption time, converting the communication interruption time to the number of continuous package loss according to a set communication cycle; computing the maximal tolerable communication interruption time within which emergency brake triggering line is not triggered, and converting the maximal tolerable communication interruption time to the maximal tolerable number of continuous package loss according to the set communication cycle; and in case that the proportion of the number of continuous package loss in the maximal tolerable number of continuous package loss reaches a set threshold value, adjusting the working condition of train. By means of the automatic train control method, timely warning and control can be given to trains behind in case of communication interruption to generate ampler tracking time for trains behind to wait for communication restoration,thereby reducing emergency and avoiding emergency brake and other operations, and since graded control is adopted subsequent to communication interruption, buffer course is achieved prior to train stoppage, reaching the purposes of favoring steady running, increasing comfort of passengers, reducing energy consumption of train and enhancing traveling efficiency.
Description
technical field [0001] The invention relates to the field of train control, in particular to an automatic train control method. Background technique [0002] During the operation of the train, the wireless communication for data transmission between the train and the ground is often interrupted due to the fading of the channel, the high-speed operation of the train, or the failure of the equipment, which brings hidden dangers to safe driving. In order to ensure driving safety and efficiency, the train needs to regularly obtain information about obstacles in front of it to ensure deceleration or parking in front of the obstacles. The ground control center also needs to obtain the location information of the train regularly so as to provide information about obstacles ahead to the train in a timely manner. [0003] When the delay of the position information transmitted by the train to the ground is too large, the position information reported by the ground will have a large er...
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Application Information
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