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基于LSTM的PCBA批次质量预测

控制工程 2024年第3期31卷 497-502页

作者：王德新俞胜平徐昌国冉海周苏玮东北大学流程工业综合自动化国家重点实验室辽宁沈阳110819 浙江达峰科技有限公司浙江杭州311199

PCBA生产手工插件线产品质量易受人工操作水平等因素影响,且多个产品质量检测环节均在手工插件线末端,导致难以在生产过程中及时把控产品质量。为了及早发现手工插件线的产品质量问题,提出了基于LSTM的PCBA产品批次质量多步预测控制策略... 详细信息

PCBA生产手工插件线产品质量易受人工操作水平等因素影响,且多个产品质量检测环节均在手工插件线末端,导致难以在生产过程中及时把控产品质量。为了及早发现手工插件线的产品质量问题,提出了基于LSTM的PCBA产品批次质量多步预测控制策略,将手工插件线上的FCT质量检测数据经过处理后作为模型的输入特征,建立了基于LSTM的PCBA批次质量预测模型。最后,将所建立的预测模型与BP、RNN和SVR模型以及目前在数据特征分析拟合上表现较好的CNN模型进行比较,仿真结果表明,所提出的模型在电子产品质量的预测中具有更好的效果,可以为PCBA的质量调控提供指导。

关键词：组装印刷电路板质量预测长短期记忆网络双列直插封装

Air pressure law of a reservoir constructed in karst sinkholes

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Journal of Mountain Science 2024年第3期21卷 1048-1057页

作者： yu Bo TAI shengping ZHENG Kexun CHEN Shiwan HAN Xiao WANG Senlin ZUO Shuangying Power China Guiyang Engineering Corporation Limited Guiyang 550081China College of Resources and Environmental Engineering Key Laboratory of Karst Georesources and EnvironmentMinistry of EducationGuizhou UniversityGuiyang 550025China

Karst sinkholes with natural negative landform provide favorable conditions for the pumped storage reservoir construction for less excavation ***,the construction of the reservoir would plug the natural karst channels for water and air,which would cause remarkable air pressure in karst channels when the groundwater level fluctuates.A large laboratory simulation test was carried out to study the air pressure variation of a reservoir built on the karst *** air pressure in the karst channel and inside the model was monitored during the groundwater rising and falling *** showed that the variation of air pressure in the karst channel and the surrounding rock exhibited a high degree of *** air pressure increased rapidly at the initial stage of water level rising,followed by a slight decrease,then the air pressure increased sharply when the water level approached the top of the karst *** initial peak of air pressure and the final peak of air pressure were defined,and both air pressure peaks were linearly increasing with the water level rising *** negative air pressure was also analyzed during the drainage process,which was linearly correlated with the water level falling *** causes of air pressure variation in karst channels of a pumped storage reservoir built on the karst sinkhole were *** initial rapid increase,then slight decrease and final sudden increase of air pressure were controlled by the combined effects of air compression in karst channel and air seepage into the surrounding *** the drainage process,the instant negative air pressure and gradual recovering of air pressure were controlled by the combined effects of negative air pressure induced by water level falling and air supply from surrounding *** work could provide valuable reference for the reservoir construction in karst area.

关键词： Simulation test Karst sinkhole Pumped storage reservoir Air pressure Flow rate

Reconstruction clipping of ruptured anterior circulation aneurysms via supraorbital lateral keyhole approach

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Chinese Neurosurgical Journal 2022年第2期8卷 82-91页

作者： yuzhang Wu Yan Zhao shengping yu Fan Li Shifei Cai Chao Peng Zhen Wang Yifan Yang Bangyue Wang Xinyu Yang Tianjin Medical University General Hospital 154 Anshan RoadHeping DistrictTianjinChina

Background:Intracranial aneurysm(IA)is a serious *** and review the cases of anterior circulation ruptured IA by supraorbital lateral keyhole approach,and summarize the experiences of this ***:Retrospective analysis of 16 cases of ruptured anterior circulation IA in our department from January 2019 to June 2020,CT angiography(CTA)was performed before *** the IA’s parameters by 3D-CT *** IA was clipped by supraorbital lateral keyhole approach combined with the 3D-skull *** drainage was performed before *** neurophysiological monitoring was performed during the *** operation,fluorescein angiography and vascular ultrasound were performed to check the clipping *** pressure monitor was performed *** was reexamined one week after *** modified Rankin Scale(MRS)was performed 6 months after ***:There were 7 males(43.8%)and 9 females(56.2%),and the average age is 52.31±11.12 years *** them,11 patients(68.8%)were anterior communicating artery aneurysms and 5(31.2%)were middle cerebral artery *** patients were out of hospital within 10 days without any death,without cerebral infarction,cerebrospinal fluid leakage and neurological *** mRS score,after 6 months follow-up,8 cases(50%)had 0 point,4 cases(25%)had 1 point,and 4 cases(25%)had 2 ***:For ruptured anterior circulation IA,the supraorbital lateral keyhole approach combined with ventricular drainage,intraoperative electrophysiological monitoring,and intraoperative vascular ultrasound is a safe and minimally invasive *** application of reconstruction clipping can reconstruct the diameter of parent vessel and reduce the recurrence rate of IA.

关键词： Intracranial aneurysm Subarachnoid hemorrhage Clipping

Optimization and Application of Flexible Production Line Production Scheduling

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Optimization and Application of Flexible Production Line Pro...

Scheduling Method for Tire Building Based on Heuristic Algorithm

第三十九届中国控制会议

作者： Yefeng Liu yuan Zhao Kangju Li shengping yu Liaoning Key Laboratory of Information Physics Fusion and Intelligent Manufacturing for Grade CNC Machine Shenyang Institute of Technology School of mechanical engineering and automation Shenyang Institute of Technology State Key Laboratory of Synthetical Automation for Process Industries Northeastern University

The production planning of bearing cap directly affects whether the production rhythm of the process is coordinated or not. Based on the analysis of production scheduling objectives and constraints of flexible automatic production line for bearing cap, a mathematical model for production planning of bearing cap is established, and the mathematical model is solved. On the premise of defining the production date and corresponding production volume of production orders on each production line, the method of production planning for on-site day is improved based on heuristic method. The production planning optimization algorithm divides the production order and determines the order of the production order. According to the sorting result, the delivery time can be calculated to determine whether the work order is produced or not. The validity of the mathematical model and the optimization algorithm are proved by experiments.

关键词： Bearing cap Heuristic algorithm Production planning Mathematical mode

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Scheduling Method for Tire Building Based on Heuristic Algor...

炼钢-连铸过程钢水存储设备脱碳钢包选配方法

第25届中国控制与决策会议

作者： shengping yu Diancai Yang Kehui Zhu Shaowen Lu Key Laboratory of Process Industry Automation of Ministry of Education Northeastern University Mesnac Co. Ltd National Tire Technology and Control Engineering Technology Research Center

ISBN: (纸本)9781467355339

There are more product specifications, great production and much equipment over the whole process of tire building. The actual complex scheduling problem of tire building is described in detail. To solve the complex multi-objective, large-scale production scheduling problem of tire building, a heuristic algorithm is proposed from the experience of the experts. The algorithm was tested by online data. Results show that the heuristic algorithm can quickly workout the optimal production scheduling of tire building, reduce the production cost, and improve productivity. The algorithm will lay the firm groundwork for application to production process in the future.

关键词： Tire Building Scheduling Heuristic Algorithm

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系统工程理论与实践 2019年第12期39卷 3129-3138页

作者：刘炜庞新富俞胜平柴天佑东北大学流程工业综合自动化国家重点实验室沈阳110819 沈阳工程学院自动化学院沈阳110136

炼钢-连铸过程是一个复杂的过程,钢水需要选择符合工艺要求的钢包作为存储设备,并按照生产计划进行.钢包选配时,钢包的属性众多,选配目标相互冲突难以同时满足;钢水的钢种属性众多导致脱碳钢包选配的约束复杂,选配优化是一个具有多冲突... 详细信息

炼钢-连铸过程是一个复杂的过程,钢水需要选择符合工艺要求的钢包作为存储设备,并按照生产计划进行.钢包选配时,钢包的属性众多,选配目标相互冲突难以同时满足;钢水的钢种属性众多导致脱碳钢包选配的约束复杂,选配优化是一个具有多冲突目标优化问题.首先,采用一阶规则学习法提取关键属性作为性能指标,包括钢包温度最高、钢包使用次数最多、钢包材质等级最低和钢包下水口数量,以钢包温度、使用次数、钢包材质、钢包水口使用次数、滑板和框架使用次数为约束,建立钢包选配模型.然后,采用最小一般泛化规则学习法提取钢包选配规则,针对多种调度顺序策略和选配优先级组合进行了仿真实验;最后,给出了基于规则优先级的启发式钢包选配方法,并进行了工业应用.结果表明:提高了钢包选配准确度,减少了在线钢包数量和日钢包维护次数,提升了炉次生产效率.

关键词：炼钢-连铸钢包选配一阶规则学习最小一般泛化启发式方法

数据视角下神经网络增量学习支持的涡轮盘多目标优化

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计算机集成制造系统 2021年第8期27卷 2393-2404页

作者：冯国奇崔东亮代学武俞胜平东北大学工商管理学院辽宁沈阳110819 东北大学流程工业综合自动化国家重点实验室辽宁沈阳110819

针对航空发动机涡轮盘多目标优化计算密集、案例需求大、分析费用高的问题,提出一种基于混合样本管理的人工神经网络训练方法,以辅助多目标粒子群优化算法处理这类计算密集问题。通过均匀设计的偏差控制,设计面向混合精度数值仿真的试验... 详细信息

针对航空发动机涡轮盘多目标优化计算密集、案例需求大、分析费用高的问题,提出一种基于混合样本管理的人工神经网络训练方法,以辅助多目标粒子群优化算法处理这类计算密集问题。通过均匀设计的偏差控制,设计面向混合精度数值仿真的试验表;在误差分析基础上,通过联合优化“虚拟样本噪声强度—隐含层节点数—虚拟样本量”,确定混合样本集的构造方法和神经网络拓扑结构,以提高模型的精度和泛化能力;多目标优化过程中,采用基于网格邻域信息的拥挤指标提高Pareto前沿的收敛性、多样性和均匀性;通过遗忘式增量学习提高寻优目标的导向性。以某型涡轮盘的多目标优化设计为例验证该体系的有效性。实验表明,所提方法在保证涡轮盘多目标优化质量的前提下,能够显著降低设计费用。

关键词：涡轮盘混合样本人工神经网络多目标粒子群优化算法增量学习

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基于能量解偶联的膜法污泥减量及膜污染控制

给水排水 2020年第S2期46卷 96-102页

作者：余笙平张柔柔丁安李圭白哈尔滨工业大学环境学院城市水资源与水环境国家重点实验室哈尔滨150090

以2,4-二硝基酚(DNP)作为解偶联剂,研究了能量解偶联技术联合重力流膜生物反应器对污泥减量、上清液回收效能及回收过程中的膜污染控制问题的影响。长期运行结果表明,DNP投加后能够实现17%~50%的污泥减量效果,并改变污泥形态,使絮体松... 详细信息

以2,4-二硝基酚(DNP)作为解偶联剂,研究了能量解偶联技术联合重力流膜生物反应器对污泥减量、上清液回收效能及回收过程中的膜污染控制问题的影响。长期运行结果表明,DNP投加后能够实现17%~50%的污泥减量效果,并改变污泥形态,使絮体松散。研究表明,能量解偶联作用使细胞破裂,SMP含量增加,污泥上清液回收过程中COD去除率降低2%~5%。此外,较低浓度的DNP(10~30mg/L)抑制EPS产生,降低了滤饼层阻力,从而缓解污泥上清液回收过程中的膜污染,最终达到较高且稳定的出水通量。

关键词：污泥减量能量解偶联超滤膜膜污染胞外聚合物

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一种基于案例的交互式多准则决策方法

黑龙江大学自然科学学报 2015年第2期32卷 195-200页

作者：余胜平熊文涛雍龙泉湖北工程学院数学与统计学院孝感432000 陕西理工学院数学与计算机科学学院汉中723001

针对已知方案部分偏好序的多准则决策问题,考察方案两两比较的2种弱偏好关系:必然偏好关系和可能偏好关系,在可能偏好关系基础上给出方案两两比较的支持度定义;基于这一概念,提出一种交互式多准则排序方法,它需要决策人根据支持度的大... 详细信息

针对已知方案部分偏好序的多准则决策问题,考察方案两两比较的2种弱偏好关系:必然偏好关系和可能偏好关系,在可能偏好关系基础上给出方案两两比较的支持度定义;基于这一概念,提出一种交互式多准则排序方法,它需要决策人根据支持度的大小来不断调整方案间的必然偏好关系,实现人机交互决策,从而使构造的加性效用函数不仅能完全支持决策人提供的偏好关系,而且能最大限度地发挥决策人的主观能动性,最终得到决策人满意的排序。算例说明了该方法的有效性和可行性。

关键词：可能偏好关系必然偏好关系加性效用函数多准则决策