中国机械工程 ›› 2026, Vol. 37 ›› Issue (2): 383-389.DOI: 10.3969/j.issn.1004-132X.2026.02.013

• 机械基础工程 • 上一篇    

基于两阶段灰云模型的工件加工精度异常评估

冉琰1(), 律永新2   

  1. 1.重庆大学高端装备机械传动全国重点实验室, 重庆, 400044
    2.比亚迪汽车工业有限公司, 深圳, 518118
  • 收稿日期:2024-12-02 出版日期:2026-02-25 发布日期:2026-03-13
  • 通讯作者: 冉琰
  • 作者简介:冉琰*(通信作者),女,1988年生,教授、博士研究生导师。研究方向为数控机床可靠性、机电产品质量。发表论文100余篇。E-mail: ranyan@cqu.edu.cn
  • 基金资助:
    国家自然科学基金(52275473);国家自然科学基金(51835001);中央高校基本科研业务费专项资金(2025CDJZKZCQ-04)

Abnormal Evaluation of Machining Accuracy of Workpieces Based on a Two-stage Grey Cloud Model

RAN Yan1(), LYU Yongxin2   

  1. 1.State Key Laboratory of Mechanical Transmission for Advanced Equipment,Chongqing University,Chongqing,400044
    2.BYD Auto Industry Company Ltd. ,Shenzhen,Guangdong,518118
  • Received:2024-12-02 Online:2026-02-25 Published:2026-03-13
  • Contact: RAN Yan

摘要:

针对工件加工精度异常程度难分析评定的问题,提出一种基于两阶段灰云模型的评价方法。提取工件精度偏差数据,从偏差的动态波动规律、异常数据的精准识别、异常程度的定量表征三个层面,建立工件加工精度异常评估体系。结合自回归差分移动平均模型与统计过程控制方法检测异常数据,基于马尔科夫转移矩阵评估异常可信度。通过云模型改进的层次分析法与熵值法确定综合权重,构建两阶段正态灰云模型来评估各精度项。齿轮加工验证了所提方法的正确性和可行性。

关键词: 加工精度, 云模型, 工件, 灰色系统理论

Abstract:

To address the difficulty in analyzing and evaluating the degree of abnormal machining accuracy of workpieces, an evaluation method was proposed based on a two-stage grey cloud model. Workpiece accuracy deviation data were extracted, and an abnormal evaluation system for machining accuracy of workpieces was established from the dynamic fluctuation law of deviations, the accurate identification of abnormal data, and the quantitative characterization of the abnormal degree. The autoregressive integrated moving average model and statistical process control method were combined to detect abnormal data, and the Markov transition matrix was used to evaluate the credibility of anomalies. The analytic hierarchy process improved by the cloud model and the entropy weight method, was employed to determine the comprehensive weights, and a two-stage normal grey cloud model was constructed to evaluate each accuracy items. Correctness and feasibility of the proposed method were verified through gear machining experiments.

Key words: machining accuracy, cloud model, workpiece, grey system theory

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