PLAN EXECUTION CONTROL APPARATUS, PLAN EXECUTION CONTROL METHOD, AND PLAN EXECUTION CONTROL PROGRAM

• US 20090287530A1
• Filed: 05/14/2009
• Published: 11/19/2009
• Est. Priority Date: 05/16/2008
• Status: Active Grant

• Current Assignee: Hitachi, Ltd.
• Original Assignee: Hitachi, Ltd.
• Inventors: WATANABE, Tohru, HORI, Hiroyuki
• Granted Patent: US 8,650,060 B2
• Time in Patent Office: Days
• US Class Current: 705/9
• CPC Class Codes: G06Q 10/06 Resources, workflows, human or project management; Enterprise or organisation planning; Enterprise or organisation modelling
• CPC Class Codes: G06Q 10/0631 Resource planning, allocation, distributing or scheduling for enterprises or organisations
• CPC Class Codes: G06Q 10/0639 Performance analysis of employees; Performance analysis of enterprise or organisation operations

Abstract

The invention provides a plan execution control apparatus, a plan execution control method and a plan execution control program capable of giving instructions for sensitively and efficiently maintaining even installations located in a wide range. The plan execution control apparatus includes a linkage reliability calculating section for calculating a target reliability of a single or a plurality of mutually related installations, a damaged state transition control section that provides a damaged state transition structure of the installations, a maintenance time limit calculating section for calculating a time limit related to the maintenance work to meet the target level of reliability of each key point and section, the constraint control section for recognizing and recording the constraints related to traveling of maintenance personnel, the traveling workload and the acceptable workload, and the itinerary maintenance determining section for calculating the itinerary schedule indicating the assignment to the object to be maintained.

Claims

1. A plan execution control apparatus for giving an instruction for maintaining installations, comprising:

a linkage reliability calculating section for calculating a target reliability indicating a probability that a target installation among one or a plurality of mutually related installations is normally used;

a damaged state transition control section that provides a damaged state transition structure of the installation;

a maintenance time limit calculating section for calculating a time limit related to a maintenance work to meet a target value of reliability of each key point and section;

a constraint control section for recognizing and recording constraints related to traveling of maintenance personnel, a traveling workload, and a workload; and

an itinerary maintenance determining section for calculating an itinerary schedule indicating an assignment to an object to be maintained among the installations.

2. The plan execution control apparatus according to claim 1, wherein the linkage reliability calculating section determines the target reliability of the installation or a target soundness which is a target value of soundness indicating a probability that the installation is not faulty from at least either one of information related to a relationship of connection with the other installation, reliability of the other installation, or information on the soundness.

3. The plan execution control apparatus according to claim 1, wherein the damaged state transition control section categorizes the damaged state of the installation by a plurality of stages or by continuous values and holds a probability of shifting from each stage to another stage as information, and the probability changes corresponding to intervals of the maintenance of the installations.

4. The plan execution control apparatus according to claim 1, wherein the maintenance time limit calculating section determines a maintenance time limit of each installation so as to meet the target reliability or target soundness of the installation based on the target reliability calculated by the linkage reliability calculating section and the transition structure of the damaged state of the installation given in the damaged state transition control section.

5. The plan execution control apparatus according to claim 1,

wherein the constraint control section records and updates the maintenance time limit, traveling of the maintenance personnel and the acceptable workload as constraints, and

wherein the itinerary maintenance determining section divides the installations into a predetermined number of sets based on information related to at least positions, ranks the sets, based on a representative value of the maintenance time limits within the respective sets and determines a maintenance itinerary route so as to carry out maintenance in order from the high rank set.

6. A plan execution control method for giving an instruction for maintaining installations, comprising:

a linkage reliability calculating step for calculating a target reliability indicating a probability that a target installation among one or a plurality of mutually related installations is normally used;

a damaged state transition control step that provides a damaged state transition structure of the installation;

a maintenance time limit calculating step for calculating a time limit related to a maintenance work to meet a target value of reliability of each key point and section;

a constraint control step for recognizing and recording constraints related to traveling of maintenance personnel, a traveling workload, and a workload; and

an itinerary maintenance determining step for calculating an itinerary schedule indicating an assignment to an object to be maintained among the installations.

7. The plan execution control method according to claim 6, wherein the linkage reliability calculating step determines the target reliability of the installation or a target soundness which is a target value of soundness, indicating a probability that the installation is not faulty from at least either one of information related to a relationship of connection with the other installation, reliability of the other installation, or information on the soundness.

8. The plan execution control method according to claim 6, wherein the damaged state transition control step categorizes the damaged state of the installation by a plurality of stages or by continuous values and holds a probability of shifting from each stage to another stage as information, and the probability changes corresponding to intervals of the maintenance of the installations.

9. The plan execution control apparatus according to claim 6, wherein the maintenance time limit calculating step determines a maintenance time limit of each installation so as to meet the target reliability or target soundness of the installation based on the target reliability calculated in the linkage reliability calculating process and the transition structure of the damaged state of the installation given in the damaged state transition control process.

10. The plan execution control method according to claim 6,

wherein the constraint control step records and updates the maintenance time limit, traveling of the maintenance personnel and the acceptable workload as constraints, and

wherein the itinerary maintenance determining step divides the installations into a predetermined number of sets based on information related to at least positions, ranks the sets based on a representative value of the maintenance time limits within the respective sets, and determines a maintenance itinerary route so that maintenance is carried out in order from the high rank set.

11. A plan execution control program for executing the plan execution control method described in claim 6 by a computer.