United States Patent 7,620,561

7,620,561

On-demand repair planning

Issued:  November 17, 2009

Assignee:  i2 Technologies US, Inc. (Dallas, TX)

Inventors:  Adgaonkar; Amol B. (Arlington, TX), Rammohan; Deepak (Irving, TX), Som; Pradip (Corinth, TX), Burkhardt; Thomas (Dallas, TX)

Abstract:  In one embodiment, a method is provided for planning repairs in response to demand in a multi-level repair network of locations at which parts may be repaired. Modeled for a location are: (1) an unserviceable buffer for parts inspected at the location and repairable at the location, and (2) a serviceable buffer for parts inspected at the location and serviceable without repair. A forecasted demand, for a quantity of serviceable parts at a future time at the location, is accessed. In a push planning phase, for each inspected part in the unserviceable buffer, the earliest time at which repair can begin for the part at the location is estimated. In a pull planning phase, if the forecasted demand cannot be satisfied using parts in the serviceable buffer: (1) a quantity of parts in the unserviceable buffer repairable at the location and available to help satisfy the forecasted demand is estimated; (2) the latest time at which repair can begin with respect to these parts at the location to help satisfy the forecasted demand is estimated; and (3) repair for these parts is planned at the estimated latest time to pull these parts from the unserviceable buffer, from which they cannot be put to service to help satisfy the forecasted demand, into the serviceable buffer, from which they can be put to service to help satisfy the forecasted demand.