This study investigates alternate designs for control of maglev vehicle suspension systems. Active and semiactive control-law designs are introduced into primary and secondary suspensions of maglev vehi cles. A one-dimensional vehicle with two degrees of freedom, simulating the German Transrapid Magiev System, is used. The transient and frequency responses of suspension systems and power spectral densities of vehicle accelerations are calculated to evaluate different control designs. The results show that both active and semiactive control designs improve vehicle response and provide acceptable ride comfort for maglev systems.
Alonoly, J. and Sankar, S., 1987, "A new concept in semi-active vibration isolation ," ASME Transactions,Journal of Mechanisms, Transmissions, and Automation Design109(2), 242-247.
2.
Alonoly, J. and Sankar, S., 1988, "Semi-active force generators for shock isolation ," Journal of Sound and Vibration126(1), 145-156.
3.
Bernard, J., Vanderploeg, M., and Shanan, J., 1987, "Literature review: Recent developments in vehicle dynamics ," Shock and Vibration Digest19(4), 10-17.
4.
Bohn, G. and Alscher, H., 1986, "The magnetic train Transrapid 06," in Proceedings of the International Conference on Maglev and Linear Drives, Vancouver, B.C., Canada, May 14-16, 1986, published by IEEE, 86CH2276-4, 233-242.
5.
Bohn, G. and Steinmetz, G., 1985, "The electromagnetic suspension system of the magnetic train 'TRANSRAPID'," in Proceedings of the International Conference of Maglev Transport '85, Keidanren Kaikan, Tokyo, Japan, September 17-19, 1985, published by IEEE, Japan, 107-114.
6.
Brock, B.J., 1973, "Determination of guideway roughness from construction tolerances" in Proceedings of the 44th Shock and Vibration Symposium, December 1973, 83-90.
7.
Cai, Y., Chen, S.S., and Rote, D.M., 1992, "Dynamics and controls of maglev systems," Report ANL- 92/43, Argonne National Laboratory, Argonne, IL.
8.
Chalasani, R.M., 1987, "Ride performance potential of active suspension systems - Part I: Simplified analysis based on a quarter-car model," ASME Publication AMD-Vol.80, New York, 187-204.
9.
Chen, S.S., Rote, D.M., and Coffey, H.T., 1992, "A review of vehicle/guideway interactions in maglev systems ," ASME Publication PVP-Vol.231, New York, 81-95.
10.
Dukkipati, R.V., Osman, M.O.M., and Vallurupalli, S.S. , 1992, "Real time adaptive control compared with stochastic optimal control of active suspension," in Proceedings CSME Forum 1992 "Transport 1992+," Vol.I, Montreal Canada, June 1-4, 192-198.
11.
Elmadany, M.M., 1990, "Optimal linear active suspensions with multivariable integral control," Vehicle System Dynamics19, 313-329.
12.
Faye, I., Kortum, W., and Schwartz, W., 1989, "Modeling, control design, and performance evaluation of high speed ground vehicle dynamics," Mechanical Structures and Machinery17(2), 259-281.
13.
Gottzein, E., Lange, F., and Ossenberg-Franzes, F., 1974, "Control system concept for a passenger carrying maglev vehicle," High Speed Ground Transportation Journal9(1), 435-447.
14.
Hrovat, D., Margolis, D.L., and Hubbard, M., 1988, "An approach toward the optimal semi-active suspension ," ASME Transactions,Journal of Mechanisms, Transmissions, and Automation Design, 110, 288-296.
15.
Johnson, L.R., Rote D.M., Hull, J.R., Coffey H.T., Daley J.G., and Giese R.F., 1989, "Maglev vehicles and superconductor technology: Integration of high-speed ground transportation into the air travel system ," Report ANL/CNSV-67, Argonne National Laboratory, Argonne, IL.
16.
Karnopp, D., Crosby, M.J., and Harwood R.A., 1974, "Vibration control using semi-active force generators ," ASME Transactions,Journal of Engineering for Industry96, 619-626.
17.
Karnopp, D.C. and Margolis, D., 1984, "Adaptive suspension concepts for road vehicles ," Vehicle System Dynamics13, 145-160.
18.
Katz, R.M., Nene, V.D., Ravera, R.J., and Skalski, C.A., 1974, "Performance of magnetic suspensions for high speed vehicles operating over flexible guideways," ASME Transactions,Journal of Dynamic System, Measurement and Control96, 204-212.
19.
Kortum, W., Schwartz, W., and Faye, I., 1988, "Dynamic modeling of high speed ground transportation vehicles for control design and performance evaluation," in Dynamics of Controlled Mechanical Systems, IUTAM/IFAC Symposium , Zurich, Switzerland, May 31-June 3, 336-350.
20.
Kortum, W. and Utzt, A., 1984, "Control law design and dynamic evaluations for a maglev vehicle with a combined lift and guidance suspension system," ASME Transactions,Journal of Dynamic Systems, Measurement, and Control106, 286-292.
21.
McCormac, A.W., Wilson J.N., and Klassen, N.D., 1992, "Active seat suspension systems for off-road vehicles ," in Proceedings CSME Forum 1992 "Transport 1992+ ," Vol.I, Montreal, Canada, June 1-4, 180-185.
22.
Zicha, J.H., 1986, "Civil aspects of maglev design," International Conference on Maglev and Linear Drives, Publication IEEE 86CH2276 , 69-87.
