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首页> 外文会议>IEEE Conference on Control Applications >Developing web TwinCAT PLC-based remote Control laboratories for modern web-browsers or mobile devices
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Developing web TwinCAT PLC-based remote Control laboratories for modern web-browsers or mobile devices

机译：为现代Web浏览器或移动设备开发基于Web和TwinCAT PLC的远程控制实验室

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This paper describes a new approach to develop remote Control laboratories accessible from modern web-browsers and student devices (PCs, laptops, tablets and smartphones) based on TwinCAT Programmable Controllers (PLCs), Easy JavaScript Simulations (EJsS) webpages, and a Node.js laboratory web-server. On the one hand, implementing the laboratory back-end application (responsible of closing the feedback loop over the plant under study) using a TwinCAT PLC provides the laboratory controllers with standard/industrial automation methodologies, real-time support and connectivity to a wide range of input/output signals. On the other hand, defining the controller front-end (graphical/interactive interface used by the students to parametrize the PLC behavior and observe the evolution of the plant and PLC signals) with EJsS facilitates the organization of its visual/interactive elements and allows the generation of a JavaScript and HTML5 webpage that is accessible from modern web-browsers and various types of students devices running different operating systems. Last, but not least, developing the laboratory web-server (in charge of managing the student access to the lab and of hosting its different webpages, including the controller frontend) within the JavaScript development and runtime platform Node.js ensures a lightweight behavior of the remote lab, provides a robust connectivity to the students, and supports efficient (real-time) communication between the controller back & front-ends. This paper also shows how the new strategy is used to update and overcome the current accessibility limitations of some existing (and published) experiences with Proportional/Integral/Differential (PIDs) and Estimator and State Feedback (ESF) Controllers based on TwinCAT PLCs and Easy Java Simulations (EJS) applets front-ends.
机译：本文介绍了一种新方法，该方法可开发基于TwinCAT可编程控制器（PLC），Easy JavaScript Simulation（EJsS）网页和Node的可从现代Web浏览器和学生设备（PC，笔记本电脑，平板电脑和智能手机）访问的远程控制实验室。 js实验室网络服务器。一方面，使用TwinCAT PLC实施实验室后端应用程序（负责关闭所研究工厂的反馈回路），可为实验室控制器提供标准/工业自动化方法，实时支持以及广泛的连接性输入/输出信号。另一方面，使用EJsS定义控制器前端（学生用来图形化PLC行为并观察工厂和PLC信号演变的图形/交互界面）有助于组织其视觉/交互元素，并允许可以从现代网络浏览器和运行不同操作系统的各种学生设备中访问JavaScript和HTML5网页。最后但并非最不重要的一点是，在JavaScript开发和运行时平台Node.js中开发实验室网络服务器（负责管理学生对实验室的访问并托管其不同的网页，包括控制器前端）可确保以下行为的轻量级行为：远程实验室，为学生提供了强大的连接性，并支持控制器后端与前端之间的高效（实时）通信。本文还展示了如何使用新策略来更新和克服一些现有（和已发布）使用基于TwinCAT PLC和Easy的比例/积分/微分（PID）和估计器和状态反馈（ESF）控制器的现有（和已发布）体验的可访问性限制。 Java Simulation（EJS）小程序的前端。

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