摘要:
Computer-implemented systems and methods generate forecasts or estimates with respect to one or more attributes contained in an attribute-based hierarchy. Physical hierarchical data and attribute input data are received so that an attribute-based hierarchy can be created. A mapping table is created that indicates relationships between the attribute-based hierarchy and the physical hierarchy, wherein the attribute-based hierarchy is accessed during model forecasting analysis or model estimation analysis.
摘要:
Computer-implemented systems and methods generate forecasts or estimates with respect to one or more attributes contained in an attribute-based hierarchy. Physical hierarchical data and attribute input data are received so that an attribute-based hierarchy can be created. A mapping table is created that indicates relationships between the attribute-based hierarchy and the physical hierarchy, wherein the attribute-based hierarchy is accessed during model forecasting analysis or model estimation analysis.
摘要:
Systems and methods are provided for determining a plurality of pack configurations to make available for distribution to a plurality of stores, wherein a pack configuration contains a particular number of units of each of a plurality of variations of a product. An allowable pack size constraint, a maximum pack configuration constraint, mismatch cost data, and product demand data for the plurality of stores are received. A first pack and a second pack for the store are determined, wherein the first pack contains a particular number of each of the variations of the product, wherein the first pack meets the allowable pack size constraint and minimizes mismatch costs for the store. Stores are clustered based on similarity of their demand data until the total pack configuration amount across all clusters meets the maximum pack configuration constraint.
摘要:
Systems and methods are provided for determining a distribution of each of a plurality of inner packs to a plurality of stores. Mismatch cost data and product demand data are received for the plurality of stores. A first inner pack quantity for distribution is determined based on the product demand data. A supply difference amount is determined, where the supply difference amount is a difference between the first inner pack quantity and the number of first inner packs available for distribution. A determination is made that adjusting the first inner pack quantity for the particular store based on the supply difference amount would have less effect on mismatch costs than other stores, and the first inner pack quantity is adjusted for the particular store based on the supply difference.
摘要:
In an internal combustion engine, at a first operating point using no exhaust gas recirculation, a first measured value of a load variable is detected. As a function of a further operating variable, a first model value of the load variable is determined using a suction pipe model. At least one parameter of the suction pipe model is adapted such that the first model value approaches or corresponds to the first measured value. A first value of the parameter adjustment is stored. At a second operating point, using exhaust gas recirculation a second value corresponding to the first value of the parameter adjustment, is determined and stored. The first and second values of the parameter adjustment are compared and a parameter value of an exhaust gas recirculation model is adapted such that the first and the second values of the parameter adjustment approach each other or correspond to each other.
摘要:
Systems and methods are provided for determining a quantity of each of a plurality of inner pack configurations to purchase for a plurality of stores. Available inner pack configurations are received along with a particular number of each inner pack configuration contained in an outer pack and mismatch cost data. A first inner pack configuration is identified from the available inner pack configurations for a store, where the first inner pack configuration best matches the demand profile for the store. Quantities of the first inner pack configuration across purchase orders of the stores are summed to generate a first total to be included in the purchase order. Inner pack configurations are added or subtracted to the purchase order so that an adjusted first total is a multiple of the particular number of inner packs that the outer pack contains.
摘要:
A method is disclosed for checking a valve on an exhaust gas turbocharger of an internal combustion engine, wherein an exhaust gas flow exits the internal combustion engine, a first portion of said flow flowing through a turbine of the exhaust gas turbocharger into an exhaust gas system and a second portion flowing through the valve into the exhaust gas system, wherein said method includes the steps of varying a fuel-to-air ratio in a fresh gas supplied to the internal combustion engine, determining a residual oxygen content in the exhaust gas system, and determining that the valve is defective if a variation of the residual oxygen content occurs in a manner different than a predetermined manner of the variation of the fuel-to-air ratio in the fresh gas. A device for checking the valve can be integrated into an integrated engine control unit of the internal combustion engine.
摘要:
In a method and device for operating an internal combustion engine with an intake tract, a switching device for modifying an effective intake pipe length and/or an effective intake tract volume is arranged. By a dynamic intake tract model an estimated intake pipe pressure is determined. The dynamic model is adapted dependent on a trimming value. If a switching position modification is controlled, an estimated old position intake pipe pressure on the one hand is determined with the previous switching position and preventing of the adaptive trimming value adjustment and on the other hand an estimated new position intake pipe pressure is determined with the modified switching position and prevention of the adaptive trimming value adjustment and dependent on a correlation check of the estimated old position pressure and the estimated new position pressure with respect to the measured pressure an actual switching position of the switching device is identified.
摘要:
Position/displacement measuring system, comprising a sensor head and an encoded scale body, the scale body extending in a first direction and in a second direction lying transversely to the first direction, and the scale body having a region for incremental position determination with an encoding in the first direction and a region for absolute position determination with an encoding in the second direction, the sensor head having a first sensor device with a sensor resolution parallel to the first direction, which is associated with the region for incremental position determination, and the sensor head having a second sensor device with a sensor resolution in a second direction, which is associated with the region for absolute position determination.
摘要:
In an embodiment, a method for on-demand repair planning includes modeling for a repair location: a good parts buffer; a first buffer for unserviceable parts determined to be serviceable without repair; and a second buffer for unserviceable parts determined to be repairable. A forecasted demand, for a specified quantity of serviceable parts, is accessed. Parts available in the first buffer to help satisfy the forecasted demand is estimated. If a part is available, an operation plan is generated for a use-as-is operation. If the forecasted demand is not fully satisfied, a quantity of parts available in the second buffer to help satisfy the forecasted demand is estimated and, if one or more parts are available: the latest time at which a repair operation can begin is estimated; a repair order is planned; and an operation plan is generated for the repair operation.