Method of controlling moving element of magnetic levitation and

Details Method of controlling moving element of magnetic levitation and Method of controlling moving element of magnetic levitation and

1993-10-22

1994-10-25

Pellinen, A. D.

Electricity: electrical systems and devices

Control circuits for electromagnetic devices

Systems for magnetizing, demagnetizing, or controlling the...

361146, H02N 1500

Patent

active

053594908

ABSTRACT:
A magnetic levitation and transport system has a plate-like moving element (SFT) which is moved by a linear motor disposed in a stator (STT). The moving element is moved vertically by first through fourth electromagnetic devices (MGV.sub.10 -MGV.sub.41), and fifth and sixth electromagnetic devices (MGH.sub.10 -MGH.sub.21) exert forces on the moving element in a horizontal direction perpendicular to the direction in which the moving element is moved. Gaps between the moving element and the electromagnetic devices are detected by gap sensors which produce gap data. In the vertical direction, for example, attractive force commands (f.sub.V1 -f.sub.V2) are produced from the outputs from a circuit for calculating the amount of feedback (10) which is supplied with the gap data (XV.sub.1 -XV.sub.4) and also with the output from a variable gain g.sub.V (l) generator (60) to which the position (l) of the center of gravity of the moving element is supplied. The attractive force commands are then linearized by linearizing circuits (71-74), and linearized outputs are applied to the electromagnetic devices. With this arrangement, the variable gains can be established by an analog circuit, and control gains in the respective control directions can be given independently of each other.

REFERENCES:
patent: 4392693 (1983-07-01), Habermann et al.
patent: 4629262 (1986-12-01), Hamilton
patent: 4868708 (1989-09-01), Bohn
patent: 4967670 (1990-11-01), Morishita et al.
patent: 4999534 (1991-03-01), Andrianos
patent: 5156093 (1992-10-01), Azukizawa et al.
patent: 5157296 (1992-10-01), Trumper
patent: 5160877 (1992-11-01), Fujiwara et al.
patent: 5168183 (1992-12-01), Whitehead
patent: 5208522 (1993-05-01), Griepentrog et al.
patent: 5243491 (1993-09-01), Van Eijk et al.

Affiliated with

Also associated with

Rating

Method of controlling moving element of magnetic levitation and does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of controlling moving element of magnetic levitation and , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of controlling moving element of magnetic levitation and will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-139791