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Research on Control Intelligent Supension of High-Speed Train

Author: LeiYangPing
Tutor: LiZhongXue
School: Lanzhou Jiaotong University
Course: Vehicle Engineering
Keywords: Passive suspension Intelligent suspension ADAMS / Rail software Fuzzy Adaptive Control
CLC: U270.3
Type: Master's thesis
Year: 2011
Downloads: 36
Quote: 0
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Abstract

The increase in high-speed operation of the railway vehicle train vibration amplitude, which will not only damage the vehicle structure, and caused by the vibration of the wheel dynamic load changes and the acceleration effect, weakening the safety and comfort of the train running, at the same time in this state as the driving speed increased significantly increased. Therefore, the control of vehicle vibration is to improve the core technology of the trains running smoothly. The other hand, in order to ensure traffic safety and improve the ride comfort, on the one hand, by improving the quality status of the line; performance can improve vehicle suspension system. To this end, the design of a suitable suspension system to improve the performance of the vehicle, rolling stock research has important significance. Many vehicle suspension device program is still in the traditional passive structure based on a number of improvements to reach a reasonable cost control, the use of reliable and some of the features to improve the effect, but only confined to a certain power range, more than the range of effects tend to die, while difficult to adapt to the high-speed train runs smooth. The high-speed train suspension system must be based on real-time conditions can be adjusted in real time damping suspension system stiffness, as well as additional control its suspension system to achieve better damping effect. Therefore, carry out high-speed train smart suspension has high theoretical and practical importance. This article is the design of a high-speed train to the existing passive suspension, semi-active suspension and active suspension systems analysis of the characteristics, summarizes the advantages and disadvantages of each, based on the research locomotive vehicle suspension system to control the situation and development trend The intelligent suspension means in order to overcome the defects of the existing locomotive vehicle suspension system. On this basis, the following research: (1) draw on ergonomic principles, the controllable damping shock absorber damping principle of human legs and feet walking people, will be added to the suspension system and the restricted predicted external force, the establishment of intelligent vehicle suspension system bionic power model to meet intelligent suspension system damping, simulation results verify the establishment of the bionic principles on the basis of the intelligent vehicle suspension the effectiveness of the system dynamics model. (2) in ADAMS / Rail software environment, the establishment of an integrated model of the vehicle and its statics and dynamics simulation study the car physique heart bogie centroid vertical acceleration, displacement, suspension vertical displacement The first round on the vertical wheel-rail forces and derailment coefficient, a suspension system designed for the smart set of parameters needed. (3) MATLAB software ADAMS / Rail software combination, the adaptive control strategy based on fuzzy set theory, the vehicle suspension system. The simulation results show that, compared with the passive suspension, intelligent structural control of the suspension system can be good to improve the performance of vehicle dynamics, can effectively reduce the bodywork acceleration, reducing wheel dynamic load to improve high-speed trains running smooth, comfortable ride degrees, and traffic safety.

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