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The Study of Track-Wheel Profile and Roundness Measuring

Author: ShenYuFei
Tutor: ZhouWenXiang
School: Southwest Jiaotong University
Course: Vehicle Operation Engineering
Keywords: Track wheels Tread shape measurement Roundness measurement Error
CLC: U213.2
Type: Master's thesis
Year: 2011
Downloads: 101
Quote: 1
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Abstract


Scrolling speed locomotive vibration test stand is an important vehicle research and test equipment, and its orbit round shape and roundness have a significant effect on the test results , so portable orbit round shape and roundness measuring instrument research work on the protection of rolling vibration test stand the normal functioning of great significance. This home and abroad railway vehicle wheel shape and roundness detection technology, the track wheel shape and roundness measurement system has been developed . First, the study measured the track wheel tread shape measurement model of five-link concept : five-link in the main measuring rod wheel drive rolling tread of the DUT optical encoder rotation angle information collected by the known structural parameters such as rod length , into a trajectory coordinates, through wheel radius compensation , access to the DUT tread shape curve . In the matlab environment simulation five linkage measure orbital wheel tread shape the process , the establishment of instruments to measure the orbital wheel tread shape of the principle model ; Taking a rolling test bed rail wheel tread shape as the basis for the agency parameter optimization , in order to designed based on the track wheel tread shape measuring the mechanical structure and the use of modern theory of error for error analysis instrument designed calibration experiments , given the uncertainty of the instrument measurement parameters . Instruments data acquisition module and data processing terminal PDA via Bluetooth wireless data transmission , the secondary development of the PDA , PDA and data acquisition modules to achieve serial communication , PDA data processing and interface display . Once again, developed a track wheel tread roundness measuring instrument, eddy current displacement sensor track wheel tread roundness variation ; photoelectric encoder shaft to shaft coupling with the track , collecting information on rail wheels rotate , thereby controlling the data DSP acquisition module for the storage of eddy current data collection ; data collection will be collected through the Bluetooth module after the data is sent to the PDA for data processing and display. This paper designs roundness measuring principle algorithm ; right system eddy current displacement sensor calibration experiments carried out to complete the data processing algorithms to the PDA transplantation ; measurement error of the system is analyzed, and completed a measurement lab report .

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CLC: > Transportation > Rail transport > Railway Line Project > Line constructed > Track
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