MagnetoShield: A Novel Open-Source Magnetic Levitation Benchmark Device for Mechatronics Education and Research

This article presents an open-source device illustrating the well-known magnetic levitation experiment. The uniqueness of this particular device lies in its exceptionally small dimensions, affordability and availability, which makes it a perfect design for take-home experiments for education but it can also serve as a referential design for testing various control algorithms in research. In addition, this paper provides a comprehensive hardware design for reproducibility along with the detailed derivation of the mathematical model, system identification and validation. Moreover, the introduced hardware comes with an easy-to-use open-source application programming interface in C/C++ for the Arduino IDE, Simulink and CircuitPython. REXYGEN, another environment similar to Simulink, had also been used to demonstrate the capabilities of the MagnetoShield.

Teaching Control during the COVID-19 Pandemic

This paper aims to analyze some different solutions that were adopted in control education activities during the pandemic. The authors of this paper are educators in the control education field from different countries on all the continents, who have developed a questionnaire with the idea of collecting data about the COVID-19 pandemic impact on the control education activities. The main objective is to study the diverse alternatives that were used worldwide to perform the online educational activities during that period, such as methodologies, tools, learning management systems (LMS), theoretical exercises, laboratory experiments, types of exams, simulators, software for online lecturing, etc. As a result, comparisons between pre-and during-pandemic educational resources and methods are performed, where useful ideas and discussions are given for the control education community.

Hybridization of automation practical courses

Since 2020, the Covid-19 pandemic has led universities around the world to hybridize courses (i.e., replacement of classroom time by online activities), most often as a matter of urgency. The difficulty of hybridization depends on the kind of course (lectures, tutorials, practical works) and the type of course (mathematics, chemistry, engineering, informatics…). ET-LIOS is a 2 year project started in November 2020, led by the GIS S.mart (scientific interest French grouping for Industry 4.0) and 14 French universities. The objective is to propose solutions and resources to hybridize higher education courses dedicated to the Industry of the Future. In this paper, firstly, we present the problems to be solved to hybridize practical works. One of the challenges is to carry out solutions which can be used easily and adapted by all partners of the ET-LIOS. Secondly, for combinatorial logic practical work, we propose to use simulation softwares (HOME I/O and CONNECT I/O) installed on the students' computer, conjointly with customizable SCORM (Sharable Content Object Reference Model) packages which can be integrated in existing learning platforms of course management (LMS) like Moodle. This SCORM package enables students to test and to get feedback of their proposed solutions. The approach has been tested with Bachelor students in a combinatorial logic practical work. First results are very encouraging.

Java simulations of embedded control systems

This paper introduces a new Open Source Java library suited for the simulation of embedded control systems. The library is based on the ideas and architecture of TrueTime, a toolbox of Matlab devoted to this topic, and allows Java programmers to simulate the performance of control processes which run in a real time environment. Such simulations can improve considerably the learning and design of multitasking real-time systems. The choice of Java increases considerably the usability of our library, because many educators program already in this language. But also because the library can be easily used by Easy Java Simulations (EJS), a popular modeling and authoring tool that is increasingly used in the field of Control Education. EJS allows instructors, students, and researchers with less programming capabilities to create advanced interactive simulations in Java. The paper describes the ideas, implementation, and sample use of the new library both for pure Java programmers and for EJS users. The JTT library and some examples are online available on http://lab.dia.uned.es/jtt.