A hybrid framework for process monitoring: Enhancing data-driven methodologies with state and parameter estimation

In this study we bridge traditional standalone data-driven and knowledge-driven process monitoring approaches by proposing a novel hybrid framework that exploits the advantages of both simultaneously. Namely, we design a process monitoring system based on a data-driven model that includes two different data types: i) “actual” data coming from sensor measurements, and ii) “virtual” data coming from a state estimator, based on a first-principles model of the system under investigation. We test the proposed approach on two simulated case studies: a continuous polycondensation process for the synthesis of poly-ethylene terephthalate, and a fed-batch fermentation process for the manufacturing of penicillin. The hybrid monitoring model shows superior fault detection and diagnosis performances with respect to conventional monitoring techniques, even when the first-principles model is relatively simple and process/model mismatch exists.     

A wireless reconfigurable modular manipulator and its control system

As the core of Industry 4.0, the intelligent manufacturing technology requires robotic arms to be networked, customized and flexible. Traditional industrial robots have a large number of electrical cables. The end effectors cannot be easily replaced. In this paper, a reconfigurable modular arm with quick replacement of tools and its neural adaptive control system are developed. It consists of an anthropomorphic 7 degree-of-freedom (DOF) manipulator, a reconfigurable connection mechanism (RCM) and a wireless controller. Based on the modular design ideas, each joint is integrated with a motor, a harmonic reducer, two encoders and a servo controller to achieve high torque capacity but keep light weight. Shape Memory Alloy (SMA) wires and steel spheres are used in the RCM to provide mechanical and electrical connections between the arm and the end effector for rapid replacement. The central controller communicates with each servo controller through wireless communication links. Furthermore, the neural adaptive control method compensating position and force tracking errors caused by the model uncertainty and time delay is addressed. Finally, the prototype is fabricated and experiments are carried out. The developed arm has high position accuracy, force control accuracy, and reliable reconfigurable capability.     

土工格栅加筋边坡极限荷载影响因素的灵敏度分析

本文利用专业岩土软件FLAC4.0进行建模、运算,采用正交试验方法安排试验方案和处理试验数据。对于影响加筋边坡的各种因素(第一层埋深、筋材长度、坡角等等),试验前后进行了全面的数值分析,得出了各种影响因素对极限荷载的灵敏度。最后,利用数值试验的数据画出各种因素作用下的极限荷载对比图。     

微软最新浏览器IE4.0的新特性

本文简要介绍微软公司最新发布的网络浏览器ＩＥ４．０的新特性,如动态桌面、活动频道、安全功能等。     

Android智能求救系统的设计与实现

针对人们遇到突发事件得不到及时救助的难题,设计并实现一种基于Android的智能求救系统.该系统由穿戴式智能手环和Android客户端组成,融合蓝牙4.0和移动通信技术.通过智能手环激活手机应用程序,利用移动通信技术发送求救信息,使用百度地图进行定位、兴趣点搜索、路径规划.利用蓝牙4.0技术设计智能手环,降低了功耗和成本;基于百度地图API开发客户端,提供了准确、及时的位置服务.实验结果证明,该系统实时可靠,提供了求救和自救双重保障,可以有效减少突发事故造成的伤亡,对生命安全保障具有重要意义.     

工业4.0时代下智能造纸工业的构建及其关键技术

结合造纸工业资金密集、技术密集、能源密集等产业特点,利用"互联网+""工业4.0"理念,探讨"互联网+传统造纸工业"即"智能造纸工业"发展新模式,旨在为探索传统造纸工业新的产业增长点献计献策,推动传统造纸工业向智能制造、绿色制造、柔性制造转型升级,进入互联网经济新兴业态。     

iFIX与西门子PLC通过SI7的通讯配置

通过例证,详细介绍了西门子S7-PLC与iFIX通过SI7的通讯配置.     

Understanding the implications of digitisation and automation in the context of Industry 4.0: A triangulation approach and elements of a research agenda for the construction industry

In recent years, Industry 4.0 has been introduced as a popular term to describe the trend towards digitisation and automation of the manufacturing environment. Despite its potential benefits in terms of improvements in productivity and quality, this concept has not gained much attention in the construction industry. This development is founded in the fact that the far-reaching implications of the increasingly digitised and automated manufacturing environment are still widely unknown. Against this backdrop, the primary objective of this paper is to explore the state of the art as well as the state of practice of Industry 4.0 relating technologies in the construction industry by pointing out the political, economic, social, technological, environmental and legal implications of its adoption. In this context, we present the results of our triangulation approach, which consists of a comprehensive systematic literature review and case study research, by illustrating a PESTEL framework and a value chain model. Additionally, we provide recommendations for further research within a research agenda.     

基于蓝牙4.0的微型核辐射剂量计设计

针对目前个人核辐射剂量监测手段便携性差、实时性较差和持续监测能力不足等问题,设计了一种基于蓝牙4.0模块的微型低功耗核辐射剂量计;系统使用计数管探测辐射粒子,充分利用了MSP430混合信号处理器和蓝牙4.0模块的低功耗特性,体积小巧、续航能力强、运行稳定可靠;该剂量计配合手机APP即可单独使用,又可多台组网使用,可为人员提供持续可靠地实时剂量率监测和个人剂量分析,在核工业及核医学个人防护领域具有广阔的应用前景。