Residual life management of cyber-physical transport systems

The article deals with the problem of assessing the residual life of robotic agricultural vehicles. This problem is inextricably linked to the organization of effective vehicle maintenance. The robotic vehicle has a multifunctional remote diagnostics system, which makes it possible to assess the probability of component failure in real-time. In virtual commissioning, simulation is the most appropriate tool for researching and finding effective maintenance solutions. A simulation model based on timed colored Petri nets is proposed. The structure of the model is given, and its modules are described. Research is carried out by the method of statistical tests on a simulation model. An example of evaluating the delays in executing a production task, depending on the maintenance procedures and the probabilities of robotic vehicle unit failures, is given.

VIRTUAL COMMISSIONING IN MACHINE TOOL MANUFACTURING: A SURVEY FROM INDUSTRY

Virtual commissioning has acquired a major interest with the introduction of Industry 4.0. It is demonstrated that virtual commissioning can significantly reduce the commissioning time, error rate and costs. However, industry is still experiencing difficulties with the integration of these new technologies. This paper is one of the first empirical surveys conducted in the industry that aims at understanding the challenges and current practices with respect to virtual commissioning, with special focus on the machine tool manufacturing sector. The survey contextualizes the practice of virtual commissioning and the digital twin in industry, and benchmarks the results with academia, in which main gaps are identified. Keywords: empirical survey, virtual commissioning, digital twin, machine tool manufacturing, testing

A GEMMA-GRAFCET Generator for the Automation Software of Smart Manufacturing Systems

Within the Industry 4.0 revolution, manufacturing enterprises are transforming to intelligent enterprises constituted by Smart Manufacturing Systems (SMSs). A key capability of SMSs is the ability to connect and communicate with each other through Industrial Internet of Things technologies, and protocols with standard syntax and semantics. In this context, the GEMMA-GRAFCET Methodology (GG-Methodology) provides a standard approach and vocabulary for the management of the Operational Modes (OMs) of SMSs through the automation software, bringing a common understanding of the exchanged data. Considering the lack of tools to implement the methodology, this work introduces an online tool based on Model-Driven Engineering–GEMMA-GRAFCET Generator (GG-Generator)–to specify and generate PLCopen XML code compliant with the GG-Methodology. The proposed GG-Generator is applied to a case study and validated using Virtual Commissioning and Dynamic Software Testing. Due to the consistency obtained between the GG-Methodology and the generated PLC code, the GG-Generator is expected to support the adoption of the methodology, thus contributing to the interoperability of SMSs through the standardization of the automation software for the management of their OMs.

Improving The Efficiency of Well Intervention Project Trial, Commissioning and Management Walk Through During Pandemic with Virtual Based Synergy of Engineering, Operation & Planning Division

A new and efficient practice on digitally distanced inspections & management walk through following the introduction of stringent global travel restrictions due to the COVID-19 pandemic is presented in this paper. To successfully implement this practice, Well Intervention Team identified the problem and challenge including personnel's count & travel restriction, virtual method to be used, special PPE and infrastructure to deal with COVID-19. Fishbone diagram is used to analyze many possible causes for the problem & challenge stated before. Planning, scheduling, and execution to comply with problem and challenge then is performed. The virtual commissioning is executed with minimum personnel from service provider that physically onsite to gather required data and witness the process, followed by verification of the documented data and approval of the commissioning from the Well Intervention Team. The project performed with no major safety issues during operation. Two projects (Micro Coiled Tubing and Slickline – Electricline Combo Unit) are successfully executed within projected working window due to quicker inspection & survey activities, shorter response time, and greater scheduling flexibility. Four Virtual Management Walk Through are done within period 2020. Travel and accommodation costs spent is reduced for online commissioning and Virtual Management Walk Through. Instant and greater access to many network of experts to analyze the stored data that improve the decision-making. Minimum travel activities that reduced risk in transporting personnel to site and accommodating visitors from the company and service provider at site, removed the risk of delay, and also reduced carbon footprint.