Elevator – industrial lift truck – or stationary lift for vehicle – Stationary lift for roadway vehicle or required component... – Having specific drive means for support
Patent
1989-07-03
1991-07-30
Pellinen, A. D.
Elevator, industrial lift truck, or stationary lift for vehicle
Stationary lift for roadway vehicle or required component...
Having specific drive means for support
B66B 130
Patent
active
050353012
ABSTRACT:
The present invention is directed to an elevator speed dictation system for use in controlling the acceleration and deceleration of an elevator. During the acceleration phase, the speed dictation system of the present invention calculates a dictated acceleration value and a dictated velocity value, as well as a position value representative of where the elevator should be, based on the dictated acceleration and velocity values. The system provides a table for storing values of acceleration, velocity and position based on the dictated velocity values. The stored values of acceleration and velocity are used by the system for decelerating the elevator, with position being the index into the table. Since acceleration values are available from the table, system computation time, otherwise required for calculating acceleration from velocity, is saved. The system begins to decelerate the elevator upon the issuance of a stop control command (SCC). The present invention employs, inter alia, a distance error calculation in determining the SCC. The distance error calculation is based on the dictated position value and the actual distance traveled by the elevator. In this way, the distance error calculation compensates for various system errors.
REFERENCES:
patent: 4594536 (1986-06-01), Tamagaki
patent: 4751984 (1988-06-01), Williams et al.
Duncanson Jr. W. E.
Otis Elevator Company
Pellinen A. D.
LandOfFree
Elevator speed dictation system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Elevator speed dictation system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Elevator speed dictation system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1537529