• CN:11-2187/TH
  • ISSN:0577-6686

机械工程学报 ›› 2018, Vol. 54 ›› Issue (23): 185-191.doi: 10.3901/JME.2018.23.185

• 数字化设计与制造 • 上一篇    下一篇

大数据驱动的晶圆工期预测关键参数识别方法

汪俊亮1,2, 张洁1   

  1. 1. 东华大学机械工程学院 上海 201620;
    2. 上海交通大学机械与动力工程学院 上海 200240
  • 收稿日期:2017-12-05 修回日期:2018-03-05 出版日期:2018-12-05 发布日期:2018-12-05
  • 通讯作者: 张洁(通信作者),男,1963年出生,博士,教授,博士研究生导师。主要研究方向为智能制造系统、工业大数据。E-mail:mezhangjie@dhu.edu.cn
  • 作者简介:汪俊亮,男,1991年出生,博士,讲师。主要研究方向为大数据驱动的智能制造系统运行与优化。E-mail:wjlwhut@163.com
  • 基金资助:
    国家自然科学基金(51435009)和上海市经信委(201602018)资助项目。

Big Data Driven Key Factor Identification for Cycle-time Forecasting of Wafer Lots in Semiconductor Wafer Fabrication System

WANG Junliang1,2, ZHANG Jie1   

  1. 1. College of Mechanical Engineering, Donghua University, Shanghai 201620;
    2. School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240
  • Received:2017-12-05 Revised:2018-03-05 Online:2018-12-05 Published:2018-12-05

摘要: 工期是晶圆制造中的重要性能指标,对其进行精准预测可促进系统运行优化,保证订单的准时交付率。针对晶圆工期影响参数多、数据体量大且作用机理复杂的特点,提出数据驱动的晶圆工期关键参数过滤方法,识别影响晶圆工期波动的关键参数。分析晶圆工期潜在影响参数,构建候选参数集;基于信息熵方法设计关键参数的入选测度,综合度量参数间的相关性、冗余性与互补性;提出过滤式的关键参数识别算法,滤取影响工期波动的关键参数子集。采用实例数据,从1 202个候选参数中过滤得到78个关键参数,并采用神经网络模型进行工期预测,结果表明,该方法在预测精度和稳定性上都优于采用全局参数的多元线性回归与神经网络方法。

关键词: 参数筛选, 大数据, 工期预测, 晶圆制造

Abstract: The semiconductor wafer fabrication system (SWFS) should make changes on the product mix and manufacturing process control frequently to meet customers' fluctuating demands, and the cycle time (CT) forecasting is crucial in the promise of a good delivery-time. A data driven method is proposed to select key factors by estimating the correlation between candidate factors and wafer lots' CT. Firstly, all candidate factors are collected for correlation analysis. Subsequently, a mutual information based method is designed to determine key factors as the input of the forecasting model. Eventually, 78 CT-related factors stood out from 1 202 candidates and replaced 5 global factors (used as reference) to predict CTs of wafer lots. To evaluate the performance, a back propagation network is designed to forecast the CT of wafer lots by using the selected key factors. The results indicate that the proposed approach had higher accuracy than linear regression and FCM-BPN in CT forecasting in large scale dataset.

Key words: big data, cycle-time forecasting, factor selection, Wafer manufacturing

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