Vehicle/guideway interaction in maglev systems

Dynamics and controls in maglev systems

“…This is applicable in a system in which passenger-compartment vertical accelerations are limited to less than 0.05 g and in which vehicle unsprung mass (i.e., mass associated with the primary suspension) inertia forces are low compared to vehicle weight. Thus, the influence of vehicle heave acceleration, which is of particular interest because it is used as a measure of passenger comfort, can be determined in this simplified model (Cai et al 1992a(Cai et al , 1992cRichardson and Wormley 1974).…”

“…In general, at least a two-suspension vehicle model is necessary to model primary and secondary suspensions of maglev vehicles (Cai et al 1992a(Cai et al , 1992cRichardson and Wormley 1974;Vu-Quoc and Olsson 1989). Lumped masses and passive parameters, such as linear springs and dashpots, are used to represent these suspensions.…”

“…An optimized guideway design will be important for a high-speed maglev system that offers good ride quality. As maglev vehicle speeds increase to 200-300 mi/hr, or as guideways become lighter and more flexible to reduce costs, the dynamic interactions between vehicle and guideway become an important problem and will play a dominant role in establishing vehicle suspension requirements and specifications for guideway stiffness, weight, and span length (Cai et al 1992a(Cai et al , 1992cChiu et al 1971;VuQuoc and Olsson 1989;Zicha 1986). …”

“…Thus, reliable analytical and simulation techniques are needed in the design of vehicle/ guideway systems (Cai et al 1992a(Cai et al , 1992cChen et al 1992;Richardson and Wormley 1974). Furthermore, the coupled vehicle/guideway dynamic model with multiple cars and multiple loads must be developed to meet the design requirements of maglev systems.…”

“…Furthermore, the coupled vehicle/guideway dynamic model with multiple cars and multiple loads must be developed to meet the design requirements of maglev systems. This analytical model should also be easily incorporated into the computer code for dynamic simulation of maglev systems (Cai et al 1992a(Cai et al , 1992c.…”