From a research point of view, the TELMA platform aims to allow the development and validation of the work of the members of the ISET department and more specifically of the SdF-PHM2 project and its Prognostics and Health Management (PHM) axis.
The TELMA platform allows the physical simulation, in a controlled manner, of failures and degradations on a process, image of an industrial process (see next paragraph). The platform is therefore a support for research work in maintenance in general and more particularly in predictive maintenance and PHM. The specific themes using the platform are prognosis (e.g. calculation of RUL, Remaining Useful Life, but also of REEL, Remaining Energy-Efficient Lifetime, in relation to energy efficiency – Thesis of A. Hoang), the development of health assessment indicators, maintenance decision support and evaluation of maintenance strategies (e.g. dynamic grouping of maintenance actions – Thesis of S. Nguyen) and the evaluation of the contribution of ambient technologies to maintenance.
These developments and validations at TRL4 level then allow the work to be taken to higher TRLs; this is notably the case with CIFRE theses such as with RENAULT (Theses of T. Laloix and A. Drissi) or ArcelorMittal (Thesis of A. Gay). The platform has also been used in the context of the LabCOM PHM factory with the company PREDICT. Indeed, TELMA is equipped with PREDICT's CASIP and KASEM tools. Thus, the integration of algorithms developed in the laboratory into these tools could be done smoothly, as they had already been partially tested with these tools.
The platform should also be used to experiment with some algorithms developed as part of the H2020 AI-PROFICIENT project.
TELMA is a TELéMAintenance integration platform for training and research located at S.mart – AIPL. Indeed, the initial genesis of the project was to provide teachers and researchers with a laboratory platform to experiment and validate practices, tools, software. . . in support of the needs expressed by industry in the fields of advanced maintenance (e.g. predictive) and functional safety. This platform is therefore intended to be close to industrial reality since it represents on a reduced scale a semi-continuous production process of the type of metal side cutting line to feed presses (PSA case). This industrial credibility is also ensured in its operating modes (possible 24/7, remote or local mode), its failure modes and their consequences. However, for safety reasons, this process has been transposed to a continuous strip process (the strip replacing the metal sheet) consisting of 4 units: a coil change unit, a strip advance unit, a strip accumulation unit and a strip punching unit. Each unit is controlled by actuators (cylinder or motor type) and instrumented with sensors to provide numerous data. These field level units are considered in an Enterprise vision, i.e. integrated by data/information with ERP and MES levels.
These three levels were built from a set of digital technologies that have evolved into ambient technologies. Indeed, the platform has existed for about 15 years but has been modified over time to adapt to the changing technologies required to meet the evolutions of the corresponding concepts: from remote maintenance to e-maintenance. This perpetual adaptation project coordinated by S.mart – AIPL in connection with teachers/researchers is called AmbiMaint.
These digital technologies are exploited both for the platform itself and for its maintenance support system, both in terms of engineering and operation. For example, on the maintenance support engineering aspect, the platform provides, in addition to the system engineering tools common to the entire S.mart – AIPL (e.g. Rhapsody), the safety/maintenance software packages CASIP Engineering, PREDICT's KASEM, APSYS' SIMFIA-SIMLOG and SPHEREA T&S' eXpress.
In its current version (up to mid-2021), the overall architecture of the TELMA platform is mainly structured around common field components communicating via open wired networks (industrial Ethernet) open to the enterprise level (AIPL Ethernet) and its environment (Ethernet). A “wireless” version of the architecture (towards IoT communication) has already been tested and should soon replace this wired version. The platform in its wired version is composed for the automation part, mainly of the following elements (beyond the 4 physical units):
— 2 Schneider TSX Premium PLCs (with Web server), a remote I/O module (Momentum);
— light beacons, control panel, Magélis touch screen, WebCam;
— Industrial Ethernet networks, enterprise network, Web server, OPC server;
— 2 Altivars ATV58, 2 motors, 1 Cylinder unit;
— software packages X3-SAGE, FlexNet, SuiteVoyager. . .
To these initial components are added in the more ambient version, RFID Tags to track tools, MEMS type wireless sensors (e.g. Crossbow), energy measurement sensors, a digital tablet (or PDA) equipped with a microphone. This platform has already been highlighted in European projects (e.g. DYNAMITE) and in relations with national academics (e.g. LAMIH) or international (e.g. Pr. Jay Lee) by the fact that it is in “remote access”.
In the E-Maintenance theme of cyber-physical production systems, since November 2020 and for 18 months, the ET-LIOS project “Enseignements Technologiques de niveau LIcence Ouverts pour une industrie du futur compétitive et Soutenable”, funded by the PIA ANR and carried by a consortium from the scientific interest group S.mart (formerly AIP-PRIMECA network), has started with the objective of retrofitting and upgrading the Nancy platform as well as the twin platforms of Valenciennes and Nantes (module C of the project).
The objective is to equip the platform with the latest industrial automation, sensor and actuator technologies and make it representative of the industry of the future. This upgrade, initially funded for teaching (and managed by M. LOMBARD), is done in consultation with the teachers/researchers of the CRAN (notably Eric LEVRAT, Phuc DO, Alexandre VOISIN, Benoît IUNG) and will also benefit the research part. This retrofitting part has a budget of 133 k€‚ including 53 k€‚ in investment, 20 k€‚ in operating and small equipment and 60 k€‚ in personnel. More generally, the ET-LIOS project has a total budget of 2.5 million euros including 270 k€ for the Lorraine pole.
