Elevator hover mode operation using sensor-based potential load change detection
US-2018170710-A1 · Jun 21, 2018 · US
Elevator control apparatus
US10266371B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10266371-B2 |
| Application number | US-201415514540-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 22, 2014 |
| Priority date | Oct 22, 2014 |
| Publication date | Apr 23, 2019 |
| Grant date | Apr 23, 2019 |
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Abstract
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An elevator control apparatus that can estimate an error of a governor encoder caused by expansion and contraction of a governor rope without need to add new governor speed detectors. The elevator control apparatus includes: a governor rope expansion/contraction amount estimating device that estimates an error of a governor encoder caused by expansion and contraction of a governor rope on the basis of a governor encoder counter signal according to a rotation of a governor around which the governor rope connected to a car of an elevator provided in a building is wound, when a landing plate detector of the car is switched from a state in which a landing plate provided at a position corresponding to a floor of the building is detected to a state in which the landing plate is not detected.
First claim
Opening claim text (preview).
The invention claimed is: 1. An elevator control apparatus comprising: a governor rope expansion/contraction amount estimating device that estimates an error of a governor encoder caused by expansion and contraction of a governor rope on the basis of a governor encoder counter signal according to a rotation of a governor around which the governor rope connected to a car of an elevator provided in a building is wound, when a landing plate detector of the car is switched from a state in which a landing plate provided at a position corresponding to a floor of the building is detected to a state in which the landing plate is not detected; a governor rope expansion/contraction amount storage device that stores information about an error of the governor encoder that is linked to information about a floor on which the landing plate is provided, the error of the governor encoder being caused by the expansion and contraction of the governor rope estimated by the governor rope expansion/contraction amount estimating device; and a car position calculator that corrects a position of the car on the basis of the information about the error caused by the expansion and contraction of the governor rope, when the landing plate detector is switched from the state in which the landing plate is not detected to the state where the landing plate is detected during deceleration of the car, the information about the error being linked to the information about the floor on which the landing plate is provided. 2. The elevator control apparatus according to claim 1 , wherein the governor rope expansion/contraction amount estimating device estimates, at each floor, an error of the governor encoder caused by the expansion and contraction of the governor rope, and the governor rope expansion/contraction amount storage device stores, linked to each other, information about an error of the governor encoder caused by the expansion and contraction of the governor rope estimated by the governor rope expansion/contraction amount estimating device at each floor and information about the floor. 3. The elevator control apparatus according to claim 1 , wherein the governor rope expansion/contraction amount storage device stores, linked to each other, information about an error of the governor encoder caused by the expansion and contraction of the governor rope estimated by complementation based on information about a plurality of floors on which the error of the governor encoder caused by the expansion and contraction of the governor rope is estimated, and information about the floors, for the floors on which the error of the governor encoder caused by the expansion and contraction of the governor rope is not estimated. 4. The elevator control apparatus according to claim 1 , wherein the governor rope expansion/contraction amount storage device re-stores information about an error of the governor encoder caused by the expansion and contraction of the governor rope, every time the governor rope expansion/contraction amount estimating device estimates the error of the governor encoder caused by the expansion and contraction of the governor rope, the information about the error being linked to the floor. 5. The elevator control apparatus according to claim 1 , wherein the governor rope expansion/contraction amount storage device is configured to transmit information about an error of the governor encoder that is linked to information about the floor, the error being caused by the expansion and contraction of the governor rope estimated by the governor rope expansion/contraction amount estimating device.
Assignees
Inventors
Classifications
- B66B1/28Primary
electrical (detecting excessive speed B66B5/04 {; control of electrical motor H02P}) · CPC title
Position or motion detectors or driving means for the detector (B66B1/40, B66B1/50 take precedence; length measuring G01B; speed measuring G01P) · CPC title
- B66B5/0018Primary
Devices monitoring the operating condition of the elevator system · CPC title
Position or depth indicators · CPC title
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Frequently asked questions
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- What does patent US10266371B2 cover?
- An elevator control apparatus that can estimate an error of a governor encoder caused by expansion and contraction of a governor rope without need to add new governor speed detectors. The elevator control apparatus includes: a governor rope expansion/contraction amount estimating device that estimates an error of a governor encoder caused by expansion and contraction of a governor rope on the b…
- Who is the assignee on this patent?
- Mitsubishi Electric Corp
- What technology area does this patent fall under?
- Primary CPC classification B66B1/28. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Apr 23 2019 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 6 related publications on this page (citations in our corpus or others sharing the same primary CPC).