Improvement method of performance of train operation control system
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A technology for train operation control and system performance, which is applied in railway signaling and safety, and can solve problems such as performance degradation of train operation control systems.
Inactive Publication Date: 2013-10-02
BEIJING JIAOTONG UNIV
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[0007] The object of the present invention is to provide a method for improving the performance of a train operation control system, which is used to solve the problem of unexpected traction and braking caused by transmission delays during the transmission of train state information and movement authorization commands, which in turn leads to the failure of the train operation control system. The problem of slow performance
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Embodiment 1
[0039] Figure 4 It is a flowchart of a method for improving the performance of a train operation control system. Such as Figure 4 As shown, a method for improving the performance of a train operation control system provided by the invention comprises:
[0040] Step 1: At the beginning of the k period, the regional controller receives the status information of all trains in the jurisdiction area at the current moment; where k is an integer and k≥2. Wherein, the status information includes the position of the tail of the train and the speed of the train.
[0041] Such as Figure 5 As shown, the control system composed of n (n≥2) trains in the area under the jurisdiction of the regional controller, train 1 (T-1) is the first train, train 2 (T-2) is the second train, train n (T-n ) for the tail car. 1 1 ,1 2 ,…,1 n are the lengths of T-1, T-2,..., T-n respectively. Respectively, the position of the end of the k-th cycle start time T-1, T-2, ..., T-n. are the speeds o...
Embodiment 2
[0070] Such as Figure 6 As shown, the control system consists of 3 trains, train 1 (T-1) is the first train, train 2 (T-2) is the middle train, and train 3 (T-3) is the tail train. 1 1 ,1 2 ,1 3 They are the lengths of T-1, T-2, and T-3 respectively. Respectively, the position of the end of the k-th cycle start time T-1, T-2, T-3. They are the speeds of T-1, T-2, and T-3 at the beginning of the k-th cycle, respectively. is the distance from the tail of T-2 to the tail of T-1, is the distance from the tail of T-3 to the tail of T-2,
[0071] In the CBTC system, the time of the train and the regional controller is strictly synchronized, and the sampling period T of the train state is very short. The three-train control system can be regarded as a discrete linear non-time-varying system. Using the method of state space, the three-train control system is expressed as:
[0072] X k ...
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Abstract
The invention discloses an improvement method of performance of a train operation control system in the technical field of train operation control. The method comprises the steps that a zone controller receives current status information of all trains at the beginning of the kth period; when the set maximum allowable waiting time is not exceeded, the zone controller computes the total time delay for generating and sending a moving authority command during the kth period; the zone controller forecasts the status information of all the trains, and generates the moving authority command according to the status information of each train and the status information of all the trains in front of the train; a timestamp is inserted into the moving authority command and sent to all the trains; after each train receives the moving authority command, the timestamp is extracted, and the execution time of the moving authority command is computed according to the specified waiting time; after each train reaches the execution time of the moving authority command, the moving authority command is executed; the next period is entered; and the steps are continued. The method eliminates an influence of train uplink and downlink transmission time delay on the train operation control performance.
Description
technical field [0001] The invention belongs to the technical field of train operation control, in particular to a method for improving the performance of a train operation control system. Background technique [0002] The traditional track-based train control system (Track-based Train Control system, TBTC) uses the track circuit to detect the occupancy and emptying of the track section to realize the positioning of the train. The positioning accuracy depends on the length of the track circuit section. At the same time, the track circuit can also transmit the ground control command to the vehicle equipment in one direction. Information can only be transmitted at very low rates (several kilobits per second) due to the skin effect of the rails. Inaccurate positioning and low-speed one-way ground-to-train information transmission limit the further shortening of the train tracking interval. Usually, the departure interval of the train control system based on the track circuit i...
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