Elevator active guidance system having a coordinated controller

Details Elevator active guidance system having a coordinated controller Elevator active guidance system having a coordinated controller

1994-08-18

1997-07-29

Nappi, Robert

Elevator, industrial lift truck, or stationary lift for vehicle

Having specific load support drive-means or its control

Includes control for power source of drive-means

187394, 187409, B61B 134, B61B 704

Patent

active

056524145

ABSTRACT:
The invention features an elevator system including an elevator car (12) having a frame that operates on guide rails of an elevator shaft of a building. The elevator car (12) has a rigid body motion in a global coordination system (X, Y, Z) kinematically defined by five degrees of freedom including side-to-side translation along the X axis, front-to-back translation along the Y axis, a pitch rotation about the X axis, a roll rotation about the Y axis, and a yaw rotation about the Z axis. The elevator system includes local parameter sensing means (14), responsive to local parameter sensed in each of the five degrees of freedom in the global coordination system (X, Y, Z), for providing local parameter signals (G.sub.m, A.sub.m); coordinated control means (16), responsive to the local parameter signals (G.sub.m, A.sub.m), for providing coordinated control signals (CC.sub.x1, CC.sub.x2, CC.sub.y1, CC.sub.y2, CC.sub.y3); and local force generating means (18), responsive to the local force coordinated control signals (CC.sub.x1, CC.sub.x2, CC.sub.y1, CC.sub.y2, CC.sub.y3), for providing coordinated local forces (F.sub.x1, F.sub.x2, F.sub.y1, F.sub.y2, F.sub.y3) to maintain desired gaps between the frame and the guide rails to coordinate the position of the elevator car (12) with respect to the elevator shaft of the building.

REFERENCES:
patent: 4750590 (1988-06-01), Otala
patent: 4754849 (1988-07-01), Ando
patent: 5117946 (1992-06-01), Traktovenko et al.
patent: 5294757 (1994-03-01), Skalski et al.
patent: 5329077 (1994-07-01), Skalski et al.
patent: 5379864 (1995-01-01), Colby
Hiromi Inaba et al., Attitude Control System of a Super High SApeed Elevator Car Based Upon Magnetic Guides, IECON '94, Bologna Italy, Sep. 5-9, 1994 Sep. 1994.

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