Electricity: electrical systems and devices – Control circuits for electromagnetic devices – Systems for magnetizing – demagnetizing – or controlling the...
Patent
1987-07-23
1989-09-19
Gellner, Michael L.
Electricity: electrical systems and devices
Control circuits for electromagnetic devices
Systems for magnetizing, demagnetizing, or controlling the...
104284, 318135, B61B 1308
Patent
active
048687081
ABSTRACT:
A method for controlling a magnet of a magnetically levitated railroad, wherein at least three variables are used which are acquired in an observer unit (support circuit) based on the measured magnitudes for the magnetic gap width s, as well as the magnetic acceleration b; to improve the following behavior of the magnetically levitated vehicle without increasing the background noise component, an additional rail signal is feed to the controller of the individual magnets, which rail signal is respectively obtained by a rail observer unit from the measured magnitudes of the magnet gap width and the magnet acceleration of one of the magnets which is leading in a travel direction in such a way that it represents a noiseless rail signal with a correct phase in the useful frequency range as referred to the respectively trailing magnets.
REFERENCES:
patent: 4505206 (1985-03-01), Gottzein
[Introduction to the Theory of Observer Units, Regulation Technology] "Regelungstechnik, Einfuehrung in die Theorie der Beobachter", J. Ackermann, Issue 7, 1976, pp. 217-226.
[Regulation of an Electromagnetic Levitating Vehicle with Integrated Drive-, "Regelung Eines Elektromagnetischen Schwebefahrzeuges Mit Integriertem An-Support & Guidance System, Reg. Tech., 1978, Issue 8, pp. 258-265] Triebs, Trag-und Fuehrungssystem", W. Vollstedt & G. Kaupert, Regelungstechnik.
[Appln. of the Magnetic Wheel in High Speed Magnetic Levitation Trains] "Anwendung des Magnetischen Rades in Hochgeschwindigkeitsmagnetschwebebahnen" W. Gottzein et al., ZEV-GLAS. Ann 103, 1979, No. 5, pp. 227-232.
Gellner Michael L.
Gray David M.
Messerschmitt-Bolkow-Blohm GmbH
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