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Double-layer programming solving method and device based on grey wolf optimizer

A two-level programming and optimizer technology, applied in the field of optimization, can solve problems such as limited computational efficiency, achieve the effect of ensuring the correctness of convergence and improving optimization efficiency

Active Publication Date: 2021-08-06
ZHEJIANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This structure requires a large number of calculations for the optimization of the underlying objectives, so the computational efficiency is still limited

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  • Double-layer programming solving method and device based on grey wolf optimizer
  • Double-layer programming solving method and device based on grey wolf optimizer
  • Double-layer programming solving method and device based on grey wolf optimizer

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Embodiment Construction

[0021] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, and do not limit the protection scope of the present invention.

[0022] In structural design, it involves the high-level objective problem of minimum structural cost or minimum structural weight, and also involves the low-level objective problem of minimum structural potential energy. Among them, the structure can be the architectural structure of a house, or various transportation structures such as airplanes, ships, trains, etc., or various daily life structures outside the exhibition hall or indoors, such as fitness equipment, tables, chairs and benches. In order to simultaneously solve the bi-level programming problem formed by th...

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Abstract

The invention discloses a double-layer programming solving method and device based on a grey wolf optimizer, and the method comprises the steps that a structural design problem is initialized into a double-layer programming problem solved by the grey wolf optimizer, and elite particles are screened through a redefined dominating relation in order to solve the double-layer programming problem; and meanwhile, a gray wolf optimizer in a position updating mode is combined to efficiently solve a bilevel planning problem, an original nested structure is broken, optimization efficiency is improved, convergence correctness is guaranteed, and then a design structure with the quality meeting the requirement is rapidly obtained.

Description

technical field [0001] The invention belongs to the technical field of optimization, and in particular relates to a method and device for solving a two-level programming based on a gray wolf optimizer. Background technique [0002] In structural design optimization problems, two levels of optimization tasks are usually included, called Mathematical Programming Problems with Equilibrium Constraints (MPEC). High-level goals for these problems might involve cost minimization or weight minimization, subject to displacement, stress, and contact forces. The high-level decision variables are usually the shape of the structure, the choice of material, the amount of material, etc. However, for any given set of high-level variables, the optimal state variables (displacements, stresses, and contact forces) need to be solved by solving an underlying energy minimization problem that manifests itself as a lower-level minimization task for the upper-level problem. However, relevant resea...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/17G06F30/27G06N3/00G06F111/04G06F111/06G06F111/10G06F119/14
CPCG06F30/17G06F30/27G06N3/006G06F2111/04G06F2111/06G06F2111/10G06F2119/14Y04S10/50
Inventor 刘玉生王冠
Owner ZHEJIANG UNIV