Multi-leg collaborative stowage optimization method capable of reducing operation times of intermediate airport container
An optimization method and ULD technology, applied in the field of shipping stowage, can solve the problems of flight delay, large deviation of the center of gravity, inconvenient operation of the ULD, etc., and achieve the effect of improving operation and reducing repetitive operations.
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[0211] Example: such as figure 1 , 2 As shown, a multi-segment collaborative stowage optimization method that can reduce the number of ULD operations at intermediate airports includes:
[0212] Overall optimization process S101: Multi-segment long-distance flight is based on the principle of optimal airborne target center of gravity and ULD loading optimization principle S201;
[0213] ULD operation optimization process S102: Multi-segment long-distance flights are loaded according to the principle of the least number of ULD operations at intermediate airports S202;
[0214] Optimization process without considering the operation of intermediate ULDs S103: collaborative stowage optimization for multi-segment long-distance flights based on the principle of optimal airborne target center of gravity without considering the operation of intermediate airport ULDs S203.
[0215]Due to the adoption of the overall optimization process, the ULD operation optimization process, and the ...
Embodiment 1
[0566] The solution of the present invention also includes: inputting the target center of gravity CGtarget into the integer programming model, using a new generation of commercial solver Gurobi to solve the model to obtain the target loading solution.
[0567] Specific steps include:
[0568] (1) coding the integer programming model;
[0569] (2) Input the target center of gravity CGtarget;
[0570] (3) call the solver to solve;
[0571] (4) Outputting the loading information.
[0572] Specifically, the Gurobi solver can be called through Python to solve the problem.
[0573] In order to further illustrate the method of this application, take the Boeing B757-200F model of a domestic airline as an example, and select 20 optional ULDs and 200 bulk cargoes to load the aircraft;
[0574] By getting as Figure 12 , 13 The weight W of the ULD shown and the weight w of the bulk cargo are used to obtain the available position j of the aircraft; Figure 9 , 11 , the model data...
Embodiment 2
[0582] Concrete technical scheme of the present invention is as follows:
[0583] S1: Obtain the weight and quantity information of direct and interline ULDs and the weight and quantity of bulk cargo;
[0584] S2: Select the research model and obtain model data at the same time. The model data is mainly stowage-related data including the original center of gravity envelope, cargo compartment layout, basic parameters such as take-off weight, fuel-free weight and landing weight, etc.;
[0585] S3: Acquiring the available location of the aircraft for placing the ULD;
[0586]S4: With the goal of minimizing the sum of the center of gravity deviations of the two flight segments and loading the non-stop ULD near the hatch door as much as possible, and keeping the position of the interline ULD as unchanged as possible, construct a multi-segment collaborative stowage integer programming model;
[0587] S5: Determine the target center of gravity CG target ;
[0588] S6: CG the cente...
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