Vertical Coupled Vibration Mechanism of Bogie-body-seat System and Joint Optimization of Suspension Parameters for High-speed Train

2018 ◽  
Vol 54 (8) ◽  
pp. 57 ◽  
Author(s):  
Yuewei YU
Keyword(s):  
High Speed ◽  
Joint Optimization ◽  
High Speed Train ◽  
Coupled Vibration ◽  
Suspension Parameters ◽  
Vibration Mechanism

The Motor Active Flexible Suspension and Its Dynamic Effect on the High-Speed Train Bogie

2017 ◽  
Vol 140 (6) ◽  
Author(s):  
Yuan Yao ◽  
Yapeng Yan ◽  
Zhike Hu ◽  
Kang Chen
Keyword(s):  
Control System ◽  
Time Delay ◽  
High Speed ◽  
State Feedback ◽  
State Feedback Control ◽  
System Stability ◽  
High Speed Train ◽  
Suspension Parameters ◽  
Linear And Nonlinear ◽  
Hunting Stability

We put forward the motor active flexible suspension and investigate its dynamic effects on the high-speed train bogie. The linear and nonlinear hunting stability are analyzed using a simplified eight degrees-of-freedom bogie dynamics with partial state feedback control. The active control can improve the function of dynamic vibration absorber of the motor flexible suspension in a wide frequency range, thus increasing the hunting stability of the bogie at high speed. Three different feedback state configurations are compared and the corresponding optimal motor suspension parameters are analyzed with the multi-objective optimal method. In addition, the existence of the time delay in the control system and its impact on the bogie hunting stability are also investigated. The results show that the three control cases can effectively improve the system stability, and the optimal motor suspension parameters in different cases are different. The direct state feedback control can reduce corresponding feed state's vibration amplitude. Suppressing the frame's vibration can significantly improve the running stability of bogie. However, suppressing the motor's displacement and velocity feedback are equivalent to increasing the motor lateral natural vibration frequency and damping, separately. The time delay over 10 ms in control system reduces significantly the system stability. At last, the effect of preset value for getting control gains on the system linear and nonlinear critical speed is studied.

Suspension parameters optimum of high-speed train bogie for hunting stability robustness

2019 ◽  
Vol 8 (3) ◽  
pp. 195-214
Author(s):  
Yuan Yao ◽  
Guang Li ◽  
Guosong Wu ◽  
Zhenxian Zhang ◽  
Jiayin Tang
Keyword(s):  
High Speed ◽  
High Speed Train ◽  
Suspension Parameters ◽  
Stability Robustness ◽  
Hunting Stability

Research into the Parameter Influence on Coupled Vibration Analysis of High Speed Train and Bridge

2011 ◽  
Vol 90-93 ◽  
pp. 884-889
Author(s):  
Chang Jian Tan ◽  
Wen Hong Ji
Keyword(s):  
Dynamic Response ◽  
High Speed ◽  
Railway Track ◽  
Vertical Acceleration ◽  
High Speed Train ◽  
Coupled Vibration ◽  
Train Speed ◽  
Response Increase ◽  
Track Irregularity ◽  
Parameter Influence

To investigate the characteristic of coupled vibration of high speed train and bridge, the effect of the railway track irregularity, different train speeds were investigated based on analyzing the coupled vibration of the JR300 high speed train-bridge system The results show that the vertical acceleration of train will be influenced much when the railway track irregularity is considered. The study suggests that the dynamic response of the train and bridge decreases with an increase in the train speed, when the train speed is at a certain zone, and the dynamic response increase rapidly with the increased train speed when the train speed is out of this zone.

scholarly journals Suspension Parameters Matching Design for Robust Hunting Stability of High-speed Train

2021 ◽  
Author(s):  
Guang Li ◽  
Yuan Yao ◽  
Yadong Song ◽  
Guosheng Chen ◽  
Kang Chen
Keyword(s):  
High Speed ◽  
Dynamic Performance ◽  
Stability Margin ◽  
High Speed Train ◽  
Suspension Parameters ◽  
Performance Indexes ◽  
Parameter Matching ◽  
Matching Design ◽  
Matching Rules ◽  
Hunting Stability

Abstract Hunting stability of high-speed train is an important dynamic performance for the design of bogie suspension parameters. An appropriate hunting stability margin is required for high-speed train. Besides, a remarkable ability to weaken the influence caused by the disturbance of bogie suspension parameters and wheel-rail contact parameters on hunting stability is also required. The matching design of bogie passive suspension parameters is an important means to ensure the train comprehensive stability. In this paper, the concept of robust hunting stability is proposed, and the indexes for suspension parameter robustness and wheel-rail contact equivalent conicity robustness are defined and chosen as the dynamic performance indexes for the bogie suspension parameters design. Design of Experiment (DOE) is used to search the suspension parameters to satisfy the defined robust hunting stability indexes. Vehicle linear stability analysis is performed based on a large number of combined random suspension parameters, and then the parameters satisfying the performance requirements are designed, from which the parameter matching rules are concluded based on the discrete statistical analysis. Using this method, the suspension parameters can be designed to satisfy the defined multiple vehicle dynamic performance indexes, instead of engineering experiences.

scholarly journals Suspension Parameters Selection of Traction Motor Cooling Fan for High Speed Train

2020 ◽  
Vol 56 (4) ◽  
pp. 201
Author(s):  
HE Xiaolong ◽  
LUO Tianhong ◽  
WANG Shengxue ◽  
WU Guoguo ◽  
TANG Bangbei ◽  
...  
Keyword(s):  
High Speed ◽  
High Speed Train ◽  
Traction Motor ◽  
Suspension Parameters ◽  
Cooling Fan ◽  
Parameters Selection ◽  
Motor Cooling ◽  
Selection Of

Critical speed enhancement of a Korean high-speed train through optimization with measured wheel profiles

2016 ◽  
Vol 232 (1) ◽  
pp. 171-181 ◽  
Author(s):  
Chang-Sung Jeon ◽  
Hong-Shik Cho ◽  
Choon-Soo Park ◽  
Seog-Won Kim ◽  
Tae-Won Park
Keyword(s):  
High Speed ◽  
Critical Speed ◽  
Initial Condition ◽  
High Speed Train ◽  
Wheel Wear ◽  
Suspension Parameters ◽  
The Relationship

This study describes the critical speed enhancement of the KTX-Sancheon, a Korean high-speed train, using measured wheel profiles. The wheel wear shape of the commercial high-speed train was measured according to mileage, and the relationship between conicity and mileage was investigated. The critical speed of the KTX-Sancheon power car was analyzed numerically with the measured wheel profiles. The suspension parameters were optimized to increase the critical speed of the KTX-Sancheon. As a result, the critical speed of the power car increased by 34.1% compared to its initial condition. The results are being used for a new design of the power bogie.

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