Affiliations: [a] Railway Technical Research Institute, 2-8-38
Hikari-cho, Kokubunji-shi, 185-8540 Tokyo, Japan | [b] Tokyo University of Agriculture and Technology,
2-24-16 Naka-cho, Koganei-shi, 184-8588 Tokyo, Japan
Abstract: The superconducting Maglev system is conceptualized as the next
generation high-speed public transportation system. For practical use, it is
important to improve the ride comfort particularly in high-speed running. The
Maglev vehicle is composed of lightweight car bodies and bogies which are
mounted with SCMs (superconducting magnets), on-board refrigerating system,
etc. The vibration isolation performance is lower than in conventional
railways, since the mass ratio of sprung mass to un-sprung mass in the Maglev
vehicle is lower than in the typical railway car. In this magnetically
levitated system, the passive electromagnetic damping between the SCMs and
ground coils is very small. Therefore, it is important to add active
electromagnetic damping to the primary suspension between the SCMs and ground
coils, and to adjust the secondary suspension between the car body and
bogie. This paper examines lateral and rolling vibration control of the
Maglev vehicle using LQ (linear quadratic) control theory. Moreover, the
estimated electromagnetic damping, which interacts between the SCMs and the
guideway, is also considered in the model to improve the ride comfort.
