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A novel predict-prevention quality control method of multi-stage manufacturing process towards zero defect manufacturing 被引量:1
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作者 Li-Ping Zhao Bo-Hao Li Yi-Yong Yao 《Advances in Manufacturing》 SCIE EI CAS CSCD 2023年第2期280-294,共15页
Zero defection manufacturing (ZDM) is the pursuit of the manufacturing industry. However, there is a lack of the implementation method of ZDM in the multi-stage manufacturing process (MMP). Implementing ZDM and contro... Zero defection manufacturing (ZDM) is the pursuit of the manufacturing industry. However, there is a lack of the implementation method of ZDM in the multi-stage manufacturing process (MMP). Implementing ZDM and controlling product quality in MMP remains an urgent problem in intelligent manufacturing. A novel predict-prevention quality control method in MMP towards ZDM is proposed, including quality characteristics monitoring, key quality characteristics prediction, and assembly quality optimization. The stability of the quality characteristics is detected by analyzing the distribution of quality characteristics. By considering the correlations between different quality characteristics, a deep supervised long-short term memory (SLSTM) prediction network is built for time series prediction of quality characteristics. A long-short term memory-genetic algorithm (LSTM-GA) network is proposed to optimize the assembly quality. By utilizing the proposed quality control method in MMP, unqualified products can be avoided, and ZDM of MMP is implemented. Extensive empirical evaluations on the MMP of compressors validate the applicability and practicability of the proposed method. 展开更多
关键词 Zero defection manufacturing(ZDM) Multi-stage manufacturing process(mmp) Moving window Deep supervised long-short term memory(SLSTM)network Assembly quality optimization
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发动机缸体多工序加工变形误差传递的建模与分析 被引量:6
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作者 李贵龙 杜世昌 《上海交通大学学报》 EI CAS CSCD 北大核心 2017年第4期385-392,共8页
定义了发动机缸体多工序加工过程(MMP)中涉及的4类坐标系,分析了基准误差、夹具误差和刀具误差等误差源在多工序之间的传递、耦合关系.采用有限元法对发动机缸体加工过程中由于切削力引起的变形进行仿真分析,将被加工表面的变形量与刀... 定义了发动机缸体多工序加工过程(MMP)中涉及的4类坐标系,分析了基准误差、夹具误差和刀具误差等误差源在多工序之间的传递、耦合关系.采用有限元法对发动机缸体加工过程中由于切削力引起的变形进行仿真分析,将被加工表面的变形量与刀具误差进行耦合;利用多个特征点的微分运动矢量(DMV)来表征一个尺寸特征,对单点DMV误差流(SoV)的状态空间模型进行扩展,建立了基于点集DMV描述、考虑切削力所致变形的SoV模型.同时,通过B12型发动机缸体加工过程中的实测数据对理论模型进行验证.结果表明,所建立的变形SoV模型具有较好的实用性和有效性. 展开更多
关键词 发动机缸体 多工序加工过程 切削力 变形 误差流
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基于ML估计的汽缸盖加工过程故障诊断
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作者 于凌波 张秋菊 《机电一体化》 2008年第1期61-63,共3页
根据现有的故障—质量模型,为模型建立估计法则以估计过程均值与方差,并得到假设检验模型以验证误差是否显著存在,从而达到辨识故障是否发生的目的。结合汽缸盖的加工过程,对这一理论进行实验验证。
关键词 多工序加工 故障诊断 ML估计
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