A Lightweight Design Method of Gearbox Based on Improved Particle Swarm Optimization Algorithm

Abstract

The invention relates to a gearbox lightweight design method based on an improved particle swarm optimization algorithm. The method includes the steps of S1, initializing three swarms including a first slave swarm, a second slave swarm and a third slave swarm; S2, with the minimum shell mass being a target, establishing adaptability functions by taking the thicknesses of a shell bottom surface wall, a shell axial wall and shell lateral walls as constraint conditions; S3, computing adaptability values of all the swarms according to speed and position updating formulas of a standard particle swarm optimization algorithm; S4, comparing the adaptability values of swarm particles, and selecting out an optimum particle and a worst particle from each swarm, wherein the optimum particles of the swarms form a virtual master swarm; S5, performing exchange among the swarms according to the result obtained in the step S4; S6, iterating sequentially until a maximum iteration number is reached, outputting an optimum value, or otherwise, skipping to the step S3. By adopting symbiosis in biology, the gearbox lightweight design method improves the defects that the standard particle swarm optimization algorithm is prone to falling into local optimum and difficult to find an optimum solution, thereby being used for better achieving gearbox lightweight design.

Description

technical field [0001] The invention relates to a lightweight design method for a gearbox based on an improved particle swarm algorithm, and belongs to the field of mechanical components. Background technique [0002] With the continuous development of science and technology, the use of automobiles is becoming more and more popular, which greatly facilitates people's lives, but what follows is that the environmental, energy and safety issues brought by automobiles are becoming more and more prominent year by year. The lightweight design of automobiles It has become an important direction for the development of the automobile industry. From the current point of view, there are three main approaches and methods for the implementation of automotive lightweight design. Lightweight design, such as aluminum alloy, magnesium alloy, plastic, powder metallurgy, ecological composite materials and ceramics; the third is to realize the lightweight design of automobiles through structur...

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Problems solved by technology

[0004] The purpose of the present invention is to propose a gearbox lightweight design method based on the improved particle swarm algorithm, focusing on solving the problem of lightweight design of gearboxes for automobiles,

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