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Title: Dynamics, stability, and control of maglev systems

Abstract

The dynamic response of maglev systems is important in several respects: Safety and ride quality, guideway design, and system costs. The dynamic response of vehicles is the key element in the determination of ride quality, and vehicle stability is one of the important elements relative to safety. To design a proper guideway that provides acceptable ride quality in the stable region, the vehicle dynamics must be understood. The trade-off between guideway smoothness and the levitation and control systems must be considered if maglev systems are to be economically feasible. This paper is a summary of our previous work on dynamics, stability and control of maglev systems. First of all, the importance of dynamics of vehicle/guideway of maglev systems is discussed. Emphasis is placed on the modeling vehicle/guideway interactions of maglev systems with a multicar, or multiload vehicle traversing on a single or double-span flexible guideway. Coupled effects of vehicle/guideway interactions in wide range of vehicle speeds with various vehicle and guideway parameters for maglev systems are investigated. Secondly, the alternative control designs of maglev vehicle suspension systems are investigated in this study to achieve safe, stable operation and acceptable ride comfort requires some form of vehicle motion control. Active andmore » semi-active control law designs are introduced into primary and secondary suspensions of maglev vehicles. Finally, this paper discusses the stability of maglev systems based on experimental data, scoping calculations, and simple mathematical models. Divergence and flutter are obtained for coupled vibration of a three-degree-of-freedom maglev vehicle on a guideway consisting of double L-shaped aluminum segments. The theory and analysis developed in this study provides basic stability characteristics and identifies future research needs for maglev systems.« less

Authors:
; ; ;
Publication Date:
Research Org.:
Argonne National Lab., IL (United States). Materials and Components Technology Div.
Sponsoring Org.:
USDOD; DOT; Department of Defense, Washington, DC (United States); Department of Transportation, Washington, DC (United States)
OSTI Identifier:
6315073
Report Number(s):
ANL/MCT/CP-79590; CONF-930550-5
ON: DE93015163
DOE Contract Number:  
W-31109-ENG-38
Resource Type:
Conference
Resource Relation:
Conference: 12. international conference on magnetically levitated systems and linear drives, Argonne, IL (United States), 19-21 May 1993
Country of Publication:
United States
Language:
English
Subject:
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; 99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE; LEVITATED TRAINS; DYNAMICS; CONTROL SYSTEMS; ELECTRONIC CIRCUITS; LEVITATION; MATHEMATICAL MODELS; RAILWAYS; STABILITY; MECHANICS; TRAINS; VEHICLES; 320202* - Energy Conservation, Consumption, & Utilization- Transportation- Railway; 990200 - Mathematics & Computers

Citation Formats

Cai, Y., Chen, S.S., Rote, D.M., and Coffey, H.T. Dynamics, stability, and control of maglev systems. United States: N. p., 1993. Web.
Cai, Y., Chen, S.S., Rote, D.M., & Coffey, H.T. Dynamics, stability, and control of maglev systems. United States.
Cai, Y., Chen, S.S., Rote, D.M., and Coffey, H.T. Fri . "Dynamics, stability, and control of maglev systems". United States. https://www.osti.gov/servlets/purl/6315073.
@article{osti_6315073,
title = {Dynamics, stability, and control of maglev systems},
author = {Cai, Y. and Chen, S.S. and Rote, D.M. and Coffey, H.T.},
abstractNote = {The dynamic response of maglev systems is important in several respects: Safety and ride quality, guideway design, and system costs. The dynamic response of vehicles is the key element in the determination of ride quality, and vehicle stability is one of the important elements relative to safety. To design a proper guideway that provides acceptable ride quality in the stable region, the vehicle dynamics must be understood. The trade-off between guideway smoothness and the levitation and control systems must be considered if maglev systems are to be economically feasible. This paper is a summary of our previous work on dynamics, stability and control of maglev systems. First of all, the importance of dynamics of vehicle/guideway of maglev systems is discussed. Emphasis is placed on the modeling vehicle/guideway interactions of maglev systems with a multicar, or multiload vehicle traversing on a single or double-span flexible guideway. Coupled effects of vehicle/guideway interactions in wide range of vehicle speeds with various vehicle and guideway parameters for maglev systems are investigated. Secondly, the alternative control designs of maglev vehicle suspension systems are investigated in this study to achieve safe, stable operation and acceptable ride comfort requires some form of vehicle motion control. Active and semi-active control law designs are introduced into primary and secondary suspensions of maglev vehicles. Finally, this paper discusses the stability of maglev systems based on experimental data, scoping calculations, and simple mathematical models. Divergence and flutter are obtained for coupled vibration of a three-degree-of-freedom maglev vehicle on a guideway consisting of double L-shaped aluminum segments. The theory and analysis developed in this study provides basic stability characteristics and identifies future research needs for maglev systems.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1993},
month = {1}
}

Conference:
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