Maglev-Girder Interaction for Centralized and De-Centralized Controllers

2010 ◽  
Author(s):  
Thomas Alberts ◽  
Mohamed Aly ◽  
Ashraf Omran
Keyword(s):  
Vehicle Dynamics ◽  
Levitation Force ◽  
Electromagnetic Levitation ◽  
Ride Quality ◽  
Realistic Simulation ◽  
Vehicle Velocity ◽  
Magnetically Levitated

This paper presents a comparison between the centralized and de-centralized controllers of a magnetically levitated vehicle. The simulation accounts for the interaction between the vehicle and girder through the control electromagnetic levitation force of the vehicle. In this way, the effects of: controller dynamics, electrodynamics, vehicle dynamics, and vehicle velocity are considered in order to provide a more realistic simulation. The main purpose of this work is to qualify the performance of each controller in sustaining an acceptable ride quality referred to ISO2631.

Dynamic Characteristics of Magnetically-Levitated Vehicle Systems

1997 ◽  
Vol 50 (11) ◽  
pp. 647-670 ◽  
Author(s):  
Y. Cai ◽  
S. S. Chen
Keyword(s):  
Dynamic Characteristics ◽  
Transportation Systems ◽  
Design Guidelines ◽  
Ride Quality ◽  
Electrodynamic System ◽  
Control Laws ◽  
Analysis And Design ◽  
Maglev Vehicle ◽  
Magnetically Levitated ◽  
Force Components

The dynamic response of magnetically-levitated (maglev) ground transportation systems has important consequences for safety and ride quality, guideway design, and system costs. This article, which reviews various aspects of the dynamic characteristics, experiments and analysis, and design guidelines for maglev systems, discusses electrodynamic system (EDS) maglev vehicle stability, motion-dependent magnetic force components, guideway characteristics, vehicle/guideway interaction, ride quality, suspension control laws, aerodynamic loads and other excitations, and research needs. This review article includes 157 references.

Analysis of ride quality of repulsive type magnetically levitated vehicles

1981 ◽  
Vol 17 (2) ◽  
pp. 1221-1233 ◽  
Author(s):  
O. Tsukamoto ◽  
Y. Iwata ◽  
S. Yamamura
Keyword(s):  
Ride Quality ◽  
Magnetically Levitated

Low-speed vehicle dynamics and ride quality using controlled D.C. electromagnets

Automatica ◽  
1977 ◽  
Vol 13 (6) ◽  
pp. 605-610 ◽  
Author(s):  
B.V. Jayawant ◽  
P.K. Sinha
Keyword(s):  
Vehicle Dynamics ◽  
Ride Quality ◽  
Low Speed

scholarly journals Experimental Study on a Test Stand for Magnetically Levitated Vehicle Dynamics Evaluation

2013 ◽  
Vol 79 (799) ◽  
pp. 507-518 ◽  
Author(s):  
Shuichiro OTA ◽  
Toshiaki MURAI ◽  
Hiroshi YOSHIOKA ◽  
Yoshiaki TERUMICHI
Keyword(s):  
Experimental Study ◽  
Vehicle Dynamics ◽  
Test Stand ◽  
Magnetically Levitated

scholarly journals Model of a magnetically levitated train's levitation forc

2017 ◽  
Vol 3 (3) ◽  
pp. 5-24
Author(s):  
Vladislav A Polyakov ◽  
Nicholas M Hachapuridze
Keyword(s):  
Levitation Force ◽  
Electric Circuit ◽  
Field Theories ◽  
Practical Significance ◽  
Research Paradigm ◽  
Correct Description ◽  
Present Stage ◽  
Model Account ◽  
Analysis And Synthesis ◽  
Magnetically Levitated

The implementation of the magnetically levitated train’s (MLT) levitation force (LF) occurs during the interaction between fields of superconductor train (STC) and short-circuited track contours (SCTC), which are the elements of levitation module (LM). Purpose. Based on above, the purpose of this study is to obtain a correct description of such interaction. At the present stage, the main and the most universal tool for the analysis and synthesis of processes and systems is their mathematical and, in particular, computer modeling. At the same time, the radical advantages of this tool make even more important the precision of choosing a specific methodology for research conducting. Methodology. This is particularly relevant in relation to such large and complex systems as MLT. For this reason, the work pays special attention to the reasoned choice of the selective features of the research paradigm. The analysis of existing versions of LF implementation’s models show that each of them, along with the advantages, also has significant drawbacks. Results. In this regard, one of the main result of the study should be the construction of this force implementation’s mathematical model, which preserves the advantages of the mentioned versions, but would be free from their shortcomings. The rationality of application, for the train’s LF researching, of an integrative holistic paradigm, which assimilates the advantages of the electric circuit and magnetic field theories, is reasonably justified in work. The scientific novelty of the research. The priority of creation of such a paradigm and the corresponding version of the implementation of LF’s model account for the novelty of the research. Practical significance of the work. The practical significance consists in the possibility, in case of using its results, of significantly increasing the efficiency of dynamic MLT research while reducing their resource costs.

scholarly journals Design and Experimental Study of Progressive Spring for Formula Student Race Car

2021 ◽  
Author(s):  
Anmol Shripad Patil ◽  
Eshita Nandi ◽  
Prasad Nanasaheb Punekar ◽  
Suyash Wagh
Keyword(s):  
Vehicle Dynamics ◽  
Design Procedure ◽  
Ride Quality ◽  
Linear Rate ◽  
Spring Rate ◽  
Roll Control ◽  
Race Car ◽  
Linear Spring ◽  
Design Calculations ◽  
Major Factors

Abstract The purpose of carrying out the present work is to design, manufacture & test the progressive springs on an FS vehicle. This is one type of helical spring with a variable spring rate. The main purpose of designing progressive springs is to avail all the advantages of the variable spring rate over the linear spring rate and better ride quality along with roll control, compared to linear rate springs. We took several factors of vehicle dynamics under consideration before settling on progressive springs. Before starting with the design procedure, we had set objectives and followed the standard methodology of spring design to get the required output. Along with that, we took design philosophy under consideration. We reviewed all the parameters before finalizing the spring material as it is one of the major factors. We carried out all the necessary design calculations to complete the dimensions and stiffness of the spring. The conclusion helped us to achieve better ride quality and roll control accompanying the optimized spring design satisfying all the necessities such as load, stiffness, and deflection of progressive springs.

Eigenvalue Analysis of Multibody Models of Railroad Vehicles Including Track Flexibility

2011 ◽  
Author(s):  
Jose´ L. Escalona ◽  
Rosario Chamorro ◽  
Antonio M. Recuero
Keyword(s):  
Vehicle Dynamics ◽  
Equations Of Motion ◽  
Steady Motion ◽  
Differential Algebraic Equations ◽  
Eigenvalue Analysis ◽  
Ride Quality ◽  
Algebraic Equations ◽  
Essential Information ◽  
Railroad Vehicles ◽  
The Stability

The stability analysis of railroad vehicles using eigenvalue analysis can provide essential information about the stability of the motion, ride quality or passengers comfort. The system eigenvalues are not in general a vehicle property but a property of a vehicle travelling steadily on a periodic track. Therefore the eigenvalue analysis follows three steps: calculation of steady motion, linearization of the equations of motion and eigenvalue calculation. This paper deals with different numerical methods that can be used for the eigenvalue analysis of multibody models of railroad vehicles that can include deformable tracks. Depending on the degree of nonlinearity of the model, coordinate selection or the coordinate system used for the description of the motion, different methodologies are used in the eigenvalue analysis. A direct eigenvalue analysis is used to analyse the vehicle dynamics from the differential-algebraic equations of motion written in terms of a set of constrained coordinates. In this case not all the obtained eigenvalues are related to the dynamics of the system. As an alternative the equations of motion can be obtained in terms of independent coordinates taking the form of ordinary differential equations. This procedure requires more computations but the interpretation of the results is straightforward.

scholarly journals MODEL OF A MAGNETICALLY LEVITATED TRAIN'S LEVITATION FORCE

2017 ◽  
Vol 3 (2) ◽  
pp. 14-16
Author(s):  
Vladislav A Polyakov ◽  
Nikolay M Hachapuridze
Keyword(s):  
Levitation Force ◽  
Magnetically Levitated

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