Research and Application of Track Geometry Shape and Position Detection Method Based on Frame Motion State
The detection of track geometric state is crucial for ensuring the train operation safety.The detection system is equipped on the train to detect the line,which is low cost,timely and efficient.However,the inertial reference method based on acceleration is mostly used to calculate the track geo-metric shape and position,which is suitable for lines with good track quality,but not suitable for the heavy-haul railways with complex alignment and poor infrastructure.In this paper,a track geometry detection method based on the motion state of the frame was proposed,and the track geometry was solved by using the attitude angle and displacement of the frame.An on-board track dynamic inspection instrument based on this method was developed,which had simple structure and low cost.In a heavy-haul railway test,the system ran stably.The calculation results were analyzed for repeatability and compared with the test results of the track inspection vehicle.The test results are reliable and meet the needs of daily inspection of the line.
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维普
