IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
UP-0919981
(2006-02-10)
|
등록번호 |
US-7801641
(2010-10-11)
|
우선권정보 |
JP-2005-135416(2005-05-06) |
국제출원번호 |
PCT/JP2006/302331
(2006-02-10)
|
§371/§102 date |
20080722
(20080722)
|
국제공개번호 |
WO06/120783
(2006-11-16)
|
발명자
/ 주소 |
- Yoshikawa, Takeru
- Uchimura, Keiichi
- Hu, Zhencheng
- Kandabashi, Tsugumitsu
|
출원인 / 주소 |
- Hirata Corporation
- Hirata Software Technology Co., Ltd.
|
대리인 / 주소 |
Buchanan Ingersoll & Rooney PC
|
인용정보 |
피인용 횟수 :
4 인용 특허 :
9 |
초록
▼
A route setting method according to the present invention sets, in a work transfer system including a plurality of work transfer units which connect a plurality of loading places to a plurality of unloading places, a route of the work transfer units to pass a work between a planned loading place and
A route setting method according to the present invention sets, in a work transfer system including a plurality of work transfer units which connect a plurality of loading places to a plurality of unloading places, a route of the work transfer units to pass a work between a planned loading place and a planned unloading place which are required to transfer the work in the plurality of loading places and the plurality of unloading places. The route setting method includes the steps of setting, based on layout information representing a layout of the plurality of work transfer units, a plurality of candidates of the route between the planned loading place and the planned unloading place, and selecting, based on a predetermined condition, one route from the plurality of candidates of the route set in the candidate setting step.
대표청구항
▼
The invention claimed is: 1. A work transfer system including a plurality of work transfer units which connect a plurality of loading places to a plurality of unloading places, the system comprising: a layout information database which stores layout information representing a layout of the pluralit
The invention claimed is: 1. A work transfer system including a plurality of work transfer units which connect a plurality of loading places to a plurality of unloading places, the system comprising: a layout information database which stores layout information representing a layout of the plurality of work transfer units; and route setting means implemented within a computer for setting, based on the layout information, a route of the work transfer units to pass a work between a planned loading place and a planned unloading place which are required to transfer the work in the plurality of loading places and the plurality of unloading places, wherein the plurality of work transfer units are constituted from a plurality of first work transfer units which transfer the work in one direction and a plurality of second work transfer units capable of changing a work transfer direction, the first and second work transfer units transferring the work by receiving and sending the work between two adjacent work transfer units, said route setting means comprising: candidate setting means for setting a plurality of candidates of the route between the planned loading place and the planned unloading place; and route selection means for selecting, based on a predetermined condition, one route from the plurality of candidates of the route set by said candidate setting means, said route selection means calculating a route selection evaluated value by Route selection evaluated value={2/(1+e−a(Tw/Tnw−1))}−1 where Tnw is a transfer time without interference with another work, Tw is a transfer time including the wait time for avoiding interference with another work which has an already set route, and a is a slope of a sigmoid function; and said candidate setting means sets, as a via point, each of the plurality of work transfer units capable of passing the work between the planned loading place and the planned unloading place and sets a shortest route as the candidate of the route for each via point. 2. The work transfer system according to claim 1, characterized by further comprising determination means for determining whether to start transferring the work at a planned transfer start time through the route set by said route setting means, wherein said determination means sets transfer start when the route selection evaluated value of the route set by said route setting means is not larger than a predetermined value and sets transfer wait when the route selection evaluated value of the route set by said route setting means is larger than the predetermined value. 3. The work transfer system according to claim 1, further comprising a database which stores, for each work whose route is set by said route setting means, a planned transfer start time of the work and a planned passage time of the work in each of the work transfer units on the route. 4. A route setting method of, in a work transfer system including a plurality of work transfer units which connect a plurality of loading places to a plurality of unloading places, setting a route of the work transfer units to pass a work between a planned loading place and a planned unloading place which are required to transfer the work in the plurality of loading places and the plurality of unloading places, the plurality of work transfer units being constituted from a plurality of first work transfer units which transfer the work in one direction and a plurality of second work transfer units capable of changing a work transfer direction, the first and second work transfer units transferring the work by receiving and sending the work between two adjacent work transfer units, the method comprising the steps of: setting, in a computer, based on layout information representing a layout of the plurality of work transfer units, a plurality of candidates of the route between the planned loading place and the planned unloading place; and selecting, in a computer, based on a predetermined condition, one route from the plurality of candidates of the route set in the candidate setting step, said route selection means calculating a route selection evaluated value by: Route selection evaluated value={2/(1+e−a(Tw/Tnw−1))}−1 where Tnw is a transfer time without interference with another work, Tw is a transfer time including the wait time for avoiding interference with another work which has an already set route, and a is a slope of a sigmoid function, wherein in the candidate setting step, each of the plurality of work transfer units capable of passing the work between the planned loading place and the planned unloading place is set as a via point, and a shortest route is set as the candidate of the route for each via point.
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