基于蚁群算法的工程机械再制造优化选配方法研究

发布时间：2019-01-08 08:06

【摘要】：针对工程机械再制造装配效率低、装配精度差以及不匹配零件较多等问题,提出一种面向再制造的优化选择装配方法。分析工程机械再制造不确定性因素和装配质量的影响因素,构建了基于多元质量损失函数和装配偏差度的数学模型;同时针对再制造装配在满足装配精度的条件下应减少不匹配零件的剩余和尽可能优先使用重用件、修复件的特点,提出装配成功率和再制造资源利用率两个新的选配质量评价指标,建立以装配精度和再制造资源利用率为目标的综合选配模型。根据再制造选配模型的特点,改进蚁群算法的信息素更新方式,设计启发信息函数,以便输出较优的装配组合方案,减少再制造过程中不确定性因素对装配质量的影响。通过某发动机曲柄连杆机构的装配实例验证了该方法的可行性和有效性。
[Abstract]:Aiming at the problems of low assembly efficiency, poor assembly precision and many mismatched parts of construction machinery, an optimal assembly method for remanufacturing is proposed. The uncertain factors of remanufacturing and the influencing factors of assembly quality are analyzed, and a mathematical model based on multivariate mass loss function and assembly deviation is constructed. At the same time, the remanufacturing assembly should reduce the surplus of mismatched parts and give priority to reuse parts and repair parts under the condition of satisfying assembly accuracy. Two new quality evaluation indexes of assembly success rate and remanufacturing resource utilization are proposed, and a comprehensive selection model aiming at assembly accuracy and remanufacturing resource utilization is established. According to the characteristics of the remanufacturing selection model, the pheromone updating method of ant colony algorithm is improved, and the heuristic information function is designed to output a better assembly combination scheme and reduce the influence of uncertainty factors on assembly quality. The feasibility and effectiveness of the method are verified by an assembly example of an engine crank and connecting rod mechanism.
【作者单位】：湖南大学机械与运载工程学院;
【基金】：国家高技术研究发展计划资助项目(863计划,2013AA040206)
【分类号】：TU605

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