西南交通大学学报

Development and Application of Tilting Trains Abroad

LIFu

2000, 13(6): 569-575.

[Abstract](1499)

Abstract:
In this paper the technique characters, development and application of tilting trains abroad are introduced in detail. By comparingwiththe transportation of aviation and highway, we knowthat it is urgent to increase the running speed of trains, and to short travelling time of passengers in the development of railway transportation. Many countries in the world have been developing railway systems of higher speed to the end ofthis century. Butthe costofthe engineeringof higherspeed railway is veryhigh and the period of its construction is long. In order to tap the latent power of the existing ordinary railway lines further, many countries have been developing the techniques of tilting trains in the past two decades. Tilting trains are gradually put into operation on the existing ordinary railway lines. It is obvious that the use of tilting trains increases the capacities of transportation of the old railway lines and the running speeds much under the existing conditions that are notto be changed. Therefore the development and application of tiltingtrains are effective methods to increase the capacities oftransportation ofthe old railway lineswith less investments that can be quickly returned.

Discussion on Some Technical Problems of Developing Tilting Train

WANGKai-wen

2000, 13(6): 576-579.

[Abstract](1456)

Abstract:
Using the experience of other countries as reference and based on the developing status of new and high-technique locomotives and vehicles in our country, the relative key technical problems such as radial bogie, curve detection, train control networks, tilting actuator,etc. in developing the tilting train of our country are discussed in this paper.

Supporting Measures for Railway Facilities of Tilting Trains

HAO Ying, YANJun-mao, LIUXue-yi

2000, 13(6): 580-584.

[Abstract](1549)

Abstract:
According to the existing condition and objective passenger car speed of mountain-area railway, common double track railway and busy double track railway, this paper discusses and presents a reasonable arrangement of railwayfacilities,e.g., vehicles, tracks and signal systems on the three type of railways for tilting trains with rising speed

Applicable Scope and Prospect of Tilting Train on Railways in China

ZHANG Wen-gui, HAO Ying, GUYan

2000, 13(6): 585-589.

[Abstract](1331)

Abstract:
This paper discusses the way of rising passenger train speed first, then analyzes the effect of rising speed with tilting train. According to the maximumspeed, the existing railways are divided into three types. Influences on track capacity, transportation cost and advantages of rising speed with tilting train on each type of railway are calculated. Finally, the conclusion about the applicable scope and prospect of tilting train on railways in China is derived.

Dynamic Analysis for Bogies of Locomotive Driving Tilting Train

ZHONG Wen-sheng, LUO Shi-hui

2000, 13(6): 590-594.

[Abstract](1580)

Abstract:
Curve negotiating performance of driving bogies with two or three axles, and with traditional or self-steeringwheel sets are analyzed in this article in order to prove the bogie concepts for the first prototype tilting train in China. It shows that two-axis bogie without steering wheel sets or three-axis bogie with steering mechanism both meet the increased curve negotiation speed requirements for tilting trains.

The Selection of the Bogie for Tilting Car in Our Country

FUMao-hai, LIFu, BUJi-ling

2000, 13(6): 595-599.

[Abstract](1348)

Abstract:
In this paper, the characters of several kinds of tilting car bogies abroad and the basic character of Chinese railways are introduced. According to the features of track and the special demands of tilting car to the bogie, the authors put forward the advice to use the steering bogie for the tilting car, discuss the feasibility and necessity, and at last, inquire into the basic structure of the bogie for the Chinese tilting cars.

The Design and Structural Optimization of a Self-Steering Radial Bogie for Tilting Train

WUPing-bo, TANG Yong-ming, CHUYong-ping

2000, 13(6): 600-603.

[Abstract](1555)

Abstract:
The selection of the tilting passenger train bogie is discussed in this paper. Aradial bogie that is suitable to tilting train is introduced, in which the bogie is a self-steering radial bogie, and the tilting mechanism of the car is composed of four swing bars and an electromechanical actuator. The optimization of the major parts such as the frame and tilting bolster of the bogie is also studied.

Tilting Mechanism Study and Dynamic Analysis of Self-Steering Bogie for Tilting Passenger Car

ZENGJing, LIUHong-you, WUPing-bo

2000, 13(6): 604-608.

[Abstract](1390)

Abstract:
The kinematics and kinetics of the tilting mechanism of the tilting passenger car are carefully studied and the control pattern of the car body tilting motion is given. Through numerical calculations the parameters of the driving actuator are determined. Then a nonlinear mathematical model of the tilting passenger carwith self-steering bogie is established and the curving performance of the car is investigated.

Design of the Force-Steering Radial Bogie of Tilting Train

JIARui-min

2000, 13(6): 609-613.

[Abstract](1440)

Abstract:
In this paper, the developing theoretic basis of the passenger car force-steering radial bogie used in the first diesel tiltingtrain in our country is explained, and the technical objects to be attained, principal parameters and the general structural style of the force-steering radial bogie are introduced. The structure and technologic characteristics of the force-steering radial bogie are analyzed too.

Research on the Steering Mechanism Parameters of Force-Steering Radial Bogie for Tilting Car

BUJi-ling, FUMao-hai, YANJun-mao

2000, 13(6): 614-618.

[Abstract](1495)

Abstract:
This paper briefly introduces the basic structure of the radial truck fortilting car and analyzes the primary principle of the force-steering bogie. It also builds a model for the whole car’s system dynamics analysis, based on the characteristics of the tilting car and the force-steering bogie. By using the computer simulation program, itoptimizes the key parameters ofthe mechanism. The results can supplythe theoretical arithmetic foundation for the engineering design of the force-steering bogie for the tilting car.

The Optimization of the Tilting Mechanism for the Tilting Car

BUJi-ling, FUMao-hai, XUEKai-min

2000, 13(6): 619-623.

[Abstract](1476)

Abstract:
This paper briefly introduces the forms of the tilting mechanism of tilting car. The models are developed for the kinematics and dynamics analyses also. On the bases of the influences to the tilting function, security, the selection of the tilting actor, space arrangement,etc., the conditions and target of the optimization are determined, and the characteristic parameters of the tilting mechanism are calculated. According to the optimization results, the paper puts forward the selection of the parameters for the tilting mechanism.

Stability Analysis of the Secondary Suspension System of Tilting Diesel Locomotive———Stiffness Method

MI Cai-ying, ZHANGKai-lin, ZHANGHong-jun

2000, 13(6): 624-628.

[Abstract](1665)

Abstract:
Amathematical model for elastic rod theory is applied according to the structure characteristic of the secondarysuspension systemoftilting locomotive, which is composed of screwflexicoil spring and rubber spring. The relationship between spring load and deformation is conducted in this paper. The authors also proposed a newestimation method for the stability of combined spring system-lateral stiffness method, which can avoid negative stiffness when this kind of suspension system is applied to engineering. It is shown that the newmethod have more accuracy and adaptability than other presented methods.

Network Communication System for the Tilting Diesel-Electric Train-Set

XIGuo-hua, LUXiang-yang, XIA Yin

2000, 13(6): 629-632.

[Abstract](1390)

Abstract:
This article describes the use and function of the network communication system which will be used to the tilting diesel-electric train-set and introduce the international standard for the train network system. In order to let the tilting diesel-electric train-set tilt correctly, the train-set needs the network communication systemwhich transmits the titling angle to each and let them tilt.

Experimental Research on Train Tilting Measurement-Control Network Based on LonWorks Technique

WANGXue-mei, JIANXiao-li

2000, 13(6): 633-636.

[Abstract](1401)

Abstract:
The paper has researched the application of the LonWorks technique to train tiltingmeasurement- control network. Experiment shows that the train tilting measurement-control network based on LonWorks is of high reliability and good real-time property, which provides theroretical and experimental bases for further research.

Research of Servo-Control System Based on Fuzzy Control Technology in Tilting Train

WUXue-jie

2000, 13(6): 637-641.

[Abstract](1539)

Abstract:
A multi-mode control method of Fuzzy-PI is designed based the characteristics of the tilting system in tilting train. The results of numerical simulation show that this multi-mode control method based on the Fuzzy Control Technology can meet the demand of fast dynamic response without overshoot and steady-state error, and has good robustness.

Tilting Control System of Tilting Train

NI Wen-bo, GENG Biao

2000, 13(6): 642-646.

[Abstract](1439)

Abstract:
The function and principle of all components of tilting control system such as detection subsystem, control subsystem, communication subsystemand tilting actuation subsystemare described in the paper. The algorithmfortilting system is given. Finally, the experimental results of each subsystemare also given. The results showthat they can satisfy the requirements of tilting system.

The Signal Processing of the Control System of Tilting Trains

DAIXiao-wen, WUXiao-xiong, YANJun-mao

2000, 13(6): 647-650.

[Abstract](1337)

Abstract:
The signal of the control systemof tilting trains is analyzed and compensated for time delay. FIR lowpass digital filter, which can be used to obtain control signal, is designed on the basis of Chebyshev approach. The reason why the time delay of signal is caused is given. The digital signal processor is introduced and the digital filter is achieved byTMS320C40.

Application of the Wavelet Transform to the Failure Diagnosis of Tilting Trains

DAIXiao-wen, ZHONG Gui-ying, WUHao-zhong

2000, 13(6): 651-655.

[Abstract](1435)

Abstract:
The probable failure of tilting mechanism control system is analyzed. Failures on actuator and sensor oftilting control systemare detected by checkingwhetherthere is a sudden change on the singularities in the wavelet transformof signal under the condition of multidimensional comprehensive behaviors, and the simulation of the gyroscope failure result shows that the detecting method proposed in this paper is fairly effective.

The UIO-Based Fault Detection in Actuator of Tilting Control System of Tilting Trains

WUHao-zhong, DAIXiao-wen, HUANG Yun-hua

2000, 13(6): 656-660.

[Abstract](1359)

Abstract:
This paper proposes aUIO-based fault detection approach to the actuator of tilting control system of tilting trains. The approach is the use of the disturbance de-coupling principle, in which the residual is designed to be insensitive to unknown disturbances, whilst sensitive to faults. This is done by using a full- order unknown input observer (UIO). The residual can be used to detect faults according to a simple threshold logic. Simulation results showthe efficiency of this method.

A Study on Electromechanical Actuator for Tilting Trains

ZHANG Wei-hua, MEIGui-ming, HUANGLi-xiang

2000, 13(6): 661-665.

[Abstract](1471)

Abstract:
Based on the analyzing of the advantage of electromechanical actuator for tilting train, the situations of development and application of electromechanical actuator are introduced. The schemes of electromechanical actuator are given and analyzed, and the electromechanical actuator has been designed on the basis of comparing. The technical design of electromechanical actuator, such as the selection and force analysis of planetary roller screws, is introduced. The technical parameters and the stress calculation results of the main components are presented.

The Real-Time Measurement and Signal Analysis of the Curve Parameter in Tilting Train

LINJian-hui, CHENJian-zheng, ZHANG Yu-ming

2000, 13(6): 666-669.

[Abstract](1453)

Abstract:
Using the filtered non-balanced centrifugal acceleration as control signal, the tilting angle can be controlled on real time. The choosingof the acceleration sensortype and the comparingof the fixing position are made from the view of reliability. The measurement precision of the gyroscope is verified, and the conclusion of getting the trigger signal and the polar judgment of the tilt according to the output of the gyroscope is proposed.

The Study on an Apparatus Measuring Uncompensated Acceleration of Tilting Train

ZHOUWen-xiang

2000, 13(6): 670-673.

[Abstract](1320)

Abstract:
A high precision digital measuring apparatus is introduced, which uses the structure of a single pendulumwith eddy current damping and an encorder measuring swing angle. It suits tilting trains in measuring gap between ideal and factual dipping angle, and measuring uncompensated acceleration of tilting train. This paper gives the measuring principle and examination results in laboratory.

Experimental Research on Power Modes of Tilting Mechanism of Tilting Train

NI Wen-bo, WANGXue-mei, ZHANGJi-min

2000, 13(6): 674-678.

[Abstract](1355)

Abstract:
The hydraulic and electromechanical tilting power modes adopted in tilting trains at present are analyzed in this paper. Under the same requirements of car-body tilting properties, the comparison test carried out in tilting car-body emulating rig shows that the electromechanical tilting mechanism has many good properties, such as smaller volume, lighter weighty, and less maintenance. It is more fit for the requirements of car-carried equipment, and represents the way of developing tilting mechanismof the tilting train.

Research on Active Control System for Tilting EMUs

SHIXian-kun, WANGKai-wen

2000, 13(6): 679-683.

[Abstract](1446)

Abstract:
In this paper, active control system for correcting the pantograph s offset caused by the car s tilting is given. And the system analyses on dynamics, force, geometry relations and control laws are given too.

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2000 Vol. 13, No. 6