Method for searching braking point, acceleration point and coasting point of train traction calculation
A traction calculation and braking point technology, which is applied to locomotives, railway car body parts, and operation center control systems, etc., can solve the problems of inaccurate calculation results and low calculation efficiency, and achieve high efficiency in the search process and accurate calculation results Effect
Active Publication Date: 2012-08-15
ZHUZHOU CSR TIMES ELECTRIC CO LTD
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[0020] In the prior art, the trial and error method is generally used to search for feature points such as the braking point, acceleration point, and coasting point of the train, which has relatively low calculation efficiency and inaccurate calculation results
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[0082] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0083] The method described in the embodiment of the present invention divides the entire train operation interval into speed limit sections according to the number of speed limit value change points in the train operation interval, and processes them one by one. For each section, the actual running curve of the train is calculated according to the actual traction strategy of the train, and based on the actual running curve, a compromise search algorithm is used to obtain the ideal braking point, acceleration point, and coasting point corresponding to each section. By adopting the method of the invention, the search process is efficient and the calculation result is accurate.
[0084] refer to image 3 and Figure 4 , image 3 ...
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The invention provides a method for searching a braking point of train traction calculation, which comprises the following steps: searching and obtaining points of rate-limiting values from big to small in the train running interval; calculating the rate-limiting values of the points from big to small in sequence to obtain the ideal braking points corresponding to each point, wherein the calculation process comprises the following steps: acquiring the starting point mileage value and rate-limiting value as well as terminal point mileage value and rate-limiting value in the run zone as well asthe rate-limiting value in the zone corresponding to the rate-limiting values of the points from big to small; combining the mileage value and the speed value obtained by the calculation to calculatethe actual run curve in the run zone in accordance with the actual traction strategy adopted by the train; and adopting an eclectic searching method for the actual run curve to obtain the ideal braking point in the zone. The invention further provides a method for searching an acceleration point and a coasting point of train traction calculation. The method of the embodiment of the invention can effectively improve the accuracy and the computing efficiency of the train traction calculation.
Description
technical field [0001] The invention relates to the field of train traction calculations, in particular to a method for searching for train traction calculation braking points, acceleration points and coasting points. Background technique [0002] Train traction calculation is a practical subject that specializes in the study of train running along the track under the action of external force and related issues. Based on mechanics, based on scientific experiments and advanced control experience, it analyzes various phenomena and principles in the process of train operation, and is used to solve some technical and economic problems in train operation and design. For example, train running speed and running time, train energy consumption, etc. [0003] The train traction strategy is the method of manipulating the train during the running of the train. The quick pull strategy is the simplest one. The fast traction strategy is to allow the train to go through the entire secti...
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IPC IPC(8): B61C17/00B61L27/00
Inventor 许为李江红王坚邓家龙何海兴刘旭君
Owner ZHUZHOU CSR TIMES ELECTRIC CO LTD