TY - JOUR
T1 - Decoupled-control method for levitation and propulsion in amphibious train marine-express
AU - Yoshida, Kinjiro
AU - Takami, Hiroshi
AU - Shi, Liming
N1 - Copyright:
Copyright 2004 Elsevier Science B.V., Amsterdam. All rights reserved.
PY - 1995/12
Y1 - 1995/12
N2 - Computer simulations with the JR's MLU002 has made simply clear a feasibility of the Marine-Express (ME), which is an amphibious superconducting Maglev train able to run on land and under the water. This paper presents a unique method for levitation and propulsion suitable for the ME which can be applied quite independently of train speeds. The method is based on a new combined levitation and propulsion which is due to lift and thrust forces produced in linear synchronous motor (LSM). This paper also presents decoupled-control method for the combined system in which levitation and propulsion commands should be satisfied independently. Decoupled-control method for levitation and propulsion is derived from analytical formulas for lift and thrust forces in which armature-current and mechanical load-angle are included explicitly. ME02 is the second model of a unique LSM car which is designed to travel underwater based on the new theory for the ME proposed here. ME02 is a simulator for the ME running on land and under the water. In order to carry out real-time calculation control at high speed, DSP is applied in the experimental system. An approximation method suitable for DSP is presented which is based on 2-dimensional interpolation for armature-current and mechanical load-angle. The proposed decoupled-control method is verified from dynamics simulations in ME02.
AB - Computer simulations with the JR's MLU002 has made simply clear a feasibility of the Marine-Express (ME), which is an amphibious superconducting Maglev train able to run on land and under the water. This paper presents a unique method for levitation and propulsion suitable for the ME which can be applied quite independently of train speeds. The method is based on a new combined levitation and propulsion which is due to lift and thrust forces produced in linear synchronous motor (LSM). This paper also presents decoupled-control method for the combined system in which levitation and propulsion commands should be satisfied independently. Decoupled-control method for levitation and propulsion is derived from analytical formulas for lift and thrust forces in which armature-current and mechanical load-angle are included explicitly. ME02 is the second model of a unique LSM car which is designed to travel underwater based on the new theory for the ME proposed here. ME02 is a simulator for the ME running on land and under the water. In order to carry out real-time calculation control at high speed, DSP is applied in the experimental system. An approximation method suitable for DSP is presented which is based on 2-dimensional interpolation for armature-current and mechanical load-angle. The proposed decoupled-control method is verified from dynamics simulations in ME02.
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M3 - Article
AN - SCOPUS:0029490160
VL - 55
SP - 467
EP - 489
JO - Memoirs of the Graduate School of Engineering, Kyushu University
JF - Memoirs of the Graduate School of Engineering, Kyushu University
SN - 0023-6160
IS - 4
ER -