Title:
METHOD AND DEVICE FOR GENERATING SPEED PATTERN OF ELEVATOR
Document Type and Number:
Japanese Patent JPS59108675
Kind Code:
A
Abstract:
A speed pattern generator, and method of generating a speed pattern, for use by an elevator car during a run to a target floor. The speed pattern includes a time based portion and a distance-to-go based portion. Calculations during the time based portion are minimized by calculating spaced points or decision speeds on the acceleration portion of the desired speed pattern. The points selected are those points at which decisions must be made as to whether the acceleration portion of the pattern should be continued. The pattern is changed at a predetermined jerk limited rate between the decision points, until a decision is made which indicates acceleration should be reduced to zero, either because the maximum desired magnitude of the speed pattern is being approached, or because the advanced floor position (AVP floor) of the elevator car has reached the target floor. A final and single calculation during the time based portion is then made, which uses the latest decision speed to calculate the desired slowdown distance for the elevator car. When the elevator car reaches the calculated slowdown distance, a distance-to-go speed pattern is generated, which is substituted for the time based pattern when the two patterns have a predetermined relationship.
Inventors:
ARAN RUISU FUTSUSON
Application Number:
JP22781783A
Publication Date:
June 23, 1984
Filing Date:
November 30, 1983
Export Citation:
Assignee:
WESTINGHOUSE ELECTRIC CORP
International Classes:
B66B1/16; B66B1/24; B66B1/30; B66B1/28; B66B1/36; B66B3/00; (IPC1-7): B66B1/28; B66B1/36; B66B3/00
Domestic Patent References:
| JPS56159705A | 1981-12-09 | |||
| JPS52106547A | 1977-09-07 |
Attorney, Agent or Firm:
Koichiro Kato