This work addresses the control design problem for Cyber-Physical Systems under the presence of denial-of-service (DoS) attacks. The system under attack is modeled as a switching system constructed following the limitation of the malicious agent of launching continuous DoS attacks. Different actions are proposed to mitigate the effects of the attack on the system. To illustrate the efficacy of the method in stabilizing the system under the existence of DoS attacks, a numerical experiment is presented.
Labour in most agro-industrial plants accounts for a significant part of the cost structure. Even though fully automated processing facilities can be built, a lower initial cost solution involves training the personnel to increase their efficiency in the plant. Advances in VR technologies enables the creation of immersive virtual environments that simulates different contexts. A VR experience is proposed in order to simulate the work environment for fruit processing line personnel. In this manner, the workers can be trained without using the physical resources of the processing plant. A usability test was performed, showing that participants felt a high degree of immersion and realism. They were able to complete the assigned tasks, indicating that the software meets the objective of instructing the participants in the selection process of IQF berries.
The main complaint of people who start in the automation area is usually that what is seen in an educational classroom is usually far from reality, it starts with simulations, and some educational units have little material and prefer not to risk it to make modifications that may damage the cell or control equipment. In this work, a low-cost manufacturing cell is taken, engineering is carried out such as electrical and pneumatic plans, the arrangement of the cell is reorganized, various components are added or replaced to make the most similar to what that might be found in an industrial area.
The robotic mobile system Robotino, developed by FESTO, is a robotic platform oriented towards research and education, which is why it has a reduced amount of actuators of limited real functionality. This article proposes the integration of a Raspberry Pi 4 to a Robotino FESTO with the purpose of expanding the number of digital inputs this robot has, in addition to allow the input of analog signals by serving as a communication interface between devices through an ethernet connection. In this way, the installation of robotic arm Lynxmotion AL5 with 5 degrees of freedom to the Robotino through the Raspberry Pi 4 is proposed so that it performs additional functions and applications without interfering with the digital inputs of the Robotino, that are already used by the sensors and accessories installed by default. By establishing the connection between both devices (Robotino and Lynxmotion AL5 robotic arm),a mobile system of 7 degrees of freedom of great versatility will be obtained. Results validation was made with the Robotino View simulation software and through real tests.
In 2023, the partners of the ITAIPU Binational Entity, Paraguay and Brazil, will have to review Annex C of the ITAIPU Treaty, which relates to the conditions of the tariff structure and commercialization of the energy produced by the power plant. The governments must define strategies for the negotiation based on the diversity of interests of the different segments of society, particularly in Paraguay, where the debate on these negotiations extends to society in general. Given the location and importance of ITAIPU for the region, the negotiation to be held should devote considerable effort to the revision of Annex C of ITAIPU. This article evaluates the implications of the components of the Cost of Electricity Service (CSE) in terms of what Paraguayan society considers important, using a multiple criteria type methodology called Perceptor Hierarchical Decision (PHD). For this purpose, surveys were carried out to know what the respondents want according to their needs. We evaluated the influence of the CSE components on the fulfillment of the PND 2030, taking into account the preferences of society. The results show that the component that relates to Energy Assignment is the one that could help to achieve greater objectives of the National Development Plan (PND) 2030. These results suggest that this component should be taken into account when preparing the negotiation strategy, taking into account the considerations.
