SYSTEMS AND METHODS FOR THE SOLUTION TO THE JOINT PROBLEM OF PARTS ORDER SCHEDULING AND MAINTENANCE PLAN GENERATION FOR FIELD MAINTENANCE
First Claim
1. ) A method for minimizing the cost of a maintenance plan for correcting a failure mode of a casualty in a complex machine, comprising:
- receiving a plurality of maintenance actions related to the failure mode, wherein one of the maintenance actions of the plurality is likely to repair the failure mode, each maintenance action having an associated cost equal to a waiting time cost, an execution time cost and a material cost, wherein the waiting time of each maintenance action is the time required to requisition and receive material required to perform the maintenance action;
constructing a plurality of different maintenance plans each comprising a sequence of the maintenance actions by assigning zero or more of the maintenance actions of the sequence with the longest of the waiting times to a second requisition, wherein each maintenance plan includes a first requisition and the second requisition;
calculating an associated cost of each maintenance plan; and
determining which of the associated cost maintenance plans is lowest.
3 Assignments
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Accused Products
Abstract
Methods and apparatus are provided for selecting a maintenance plan such that the cost of the maintenance plan is the lowest or near the lowest. The method comprises receiving a set of maintenance actions, wherein one of the repair actions is likely to repair the failure mode. The set of maintenance actions is sequenced in the increasing order of their waiting times. Each maintenance action has an associated cost equal to a waiting time cost, an execution time cost and a material cost, wherein the waiting time of each maintenance action is the time required to requisition and receive material required to perform the maintenance action. The method also constructs a maintenance plan comprising a first requisition and a second requisition by assigning each of the sequence of maintenance actions to one of the first or the second requisition.
16 Citations
20 Claims
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1. ) A method for minimizing the cost of a maintenance plan for correcting a failure mode of a casualty in a complex machine, comprising:
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receiving a plurality of maintenance actions related to the failure mode, wherein one of the maintenance actions of the plurality is likely to repair the failure mode, each maintenance action having an associated cost equal to a waiting time cost, an execution time cost and a material cost, wherein the waiting time of each maintenance action is the time required to requisition and receive material required to perform the maintenance action; constructing a plurality of different maintenance plans each comprising a sequence of the maintenance actions by assigning zero or more of the maintenance actions of the sequence with the longest of the waiting times to a second requisition, wherein each maintenance plan includes a first requisition and the second requisition; calculating an associated cost of each maintenance plan; and determining which of the associated cost maintenance plans is lowest. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. ) A method for determining a minimum cost maintenance plan for correcting a failure mode in a complex machine, comprising:
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receiving a sequence of maintenance actions in an increasing order of a waiting time for each maintenance action, wherein one of the maintenance actions is likely to repair the failure mode, each maintenance action having an associated cost equal to a waiting time cost, an execution time cost and a material cost, wherein the waiting time of each maintenance action is the time required to requisition and receive resources required to perform the maintenance action; and constructing a maintenance plan comprising a first requisition and a second requisition by assigning each of the maintenance actions in the sequence of maintenance actions to the first or second requisition. - View Dependent Claims (11, 12, 13, 14, 15)
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16. ) A computer readable medium with instructions stored thereon that when executed by a computing device causes acts to be performed, the acts comprising:
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receiving a sequence of maintenance actions in an order of a waiting time for each maintenance action, wherein one of the maintenance actions is likely to repair the failure mode, each maintenance action having an associated cost equal to a waiting time cost, an execution time cost and a material cost, wherein the waiting time of each maintenance action is the time required to requisition and receive material required to perform the maintenance action; constructing a plurality of different maintenance plans from the sequence of maintenance actions, each maintenance plan including a first requisition and a second requisition, by assigning zero or more of the maintenance actions of the sequence with the longest of the waiting times to the secondary requisition; calculating an associated cost of each maintenance plan; and determining which of the associated cost maintenance plan is lowest. - View Dependent Claims (17, 18, 19, 20)
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Specification