The Study Of Position And Orientation Measurement Systerm Of The End Of Train

With the advent of the new century, China railway has full speeded up several times inrecent years, which announcesthe coming of Chinese High-speed Rail era. This also bringsnew opportunities for leaping development of Chinese railway construction. Understandingthe advance theory and design method, designingrail train creatively, are important means forthe development of high speed rail technology in China. At the same time, the rapiddevelopment of the high-speed train technology also allows thatthe requirements of eachpartand the relationship among the parts of the train are also improvingconstantly.It is the connection device of the end of the trainthat connects the different vehiclestogether. The end of the train and the bogie are the important parts of railway vehicle.Thestate of various components of the train through the curve has an important effect onthedynamic performance of the train, such as safety and stability. The coupler, the throughpassage, the windshield, the buffer, the electric connecting lines, the bridge line and thebrake hose are the important parts installed in the end of the train, so it is crucial for thedesign and optimization of train to studythe relation between the components and the bogiewhile thetrain through the curve.Trains in operation process, through a different road conditions, such as, after points,rail and the changing slope curve, or by the traction and braking force, between the adjacenttwo cars of the train, can produce different degree of relative motion. If the relative motion istoo large, extremely easy to cause the car side interference occurs between extremelyconnection device, light damage to the car and car end connection device, severe, evensafety accidents will happen. So it is necessary for car side parts in different trafficmovement posture for testing.Relationship for high speed railway car end, scholars at home and abroad have carriedout different levels of study, based on the research status at home and abroad, this paperproposes a new car end relationship test-bed and the corresponding test methods.The end of train in this paper, the relationship between the integrated test rig, is basedon changchun railway vehicle co., LTD. CNR group "high-speed Train System Integrationof National key project Laboratory (National Engineering Laboratory for the SystemIntegration of High-speed Train, NELSIHT)" railway Train platform and set up the basis ofparameters test-bed, and refer to the six degree-of-freedom Stewart platform. Compared withprevious car end relationship test bench, the bench can not only realize the motionsimulation of the single car side specimen, can also realize the motion simulation for twospecimens, which can be more realistic simulation of the actual road conditions. Due to thetest specimen is at the end of the car the car end of the flexible specimen, so you can fordifferent kinds of specimen size car end simulation.This article first to the structure of the relationship between the vehicle terminal test rig are introduced, including car end relationship system platform for the basis of the structureand the main structure, and then through the sensor installation and layout scheme ofmeasuring principle are introduced.In this paper, the space geometric point and the point distance and the relationshipbetween the spatial coordinates, through the specimen on the sensor layout in the end, set uptwo by the relationship between the test specimen between different test point, thus establishthe car side position measurement model of the inverse solution. Through iterative principlecombined with measuring system pose inverse solution of the mathematical model isestablished in measurement system of mathematical model of pose positive solutions.Position measurement on the finished car end after calculating model, this article isbased on MATLAB/Simulink platform, and set the pose measurement settlement model, anduse the Solidworks simulation test model, the test results show that this article build car endrelationship test model car end position can be accurately measured.To sum up, this paper proposes a measuring car end position car end relationship testrig, and established the calculating model of test bench, and through the Simulink simulationand verification of the model, thus for the test bench for car side relations pose measurementexperiment provides the theoretical basis.