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The increasing number of vehicles are one of the causes of accidents, exhaust pollution and traffic congestion in urban areas. These pressing problems force human to looking for the approach for a higher car flow on highways in less time and with fewer accidents. In that context, one of the approach growing roadway capacity is to make a car/truck grouping moving in a strings in order to follow short...
The paper proposes a technical procedure for modeling the parameters variation of a fluid flowing through a transport structure. The determined models are used to identify more accurately the leakage points / faults occurring in this infrastructure. The procedure considers faults / leaks that are variable, with minimum and maximum limits being defined. The validation of the procedure is done by implementation...
This article presents a real-time control system for an experimental model of a water distribution system. The hardware and software implementation follows the latest trends in IoT and proves that such an architecture can be used for real-time process control in distributed systems. The control of flow is implemented using a multiple-model control algorithm for the pumping station. A method which...
Most of real processes operate in nonlinear behavior or multi operating conditions and from this point many studies are presented for the purpose of maintaining specific performances to controlled processes with nonlinear conditions and uncertainties. One of these studies is the multiple models strategy which is considered as a direct adaptive method. One of the important issues in this strategy is...
This paper describes the implementation of high performance process simulator clusters based on modern graphical processing unit architectures. Graphics rendering is basically just an intensive session of complex mathematical calculations, reading and writing memory buffers and computing bitmap matrixes. This is extremely similar to what system simulation software actually does: some mathematics -...
The public interest in finding affordable solutions for multiple purpose autonomous robots has increased in the last years. The main features are recognition of defined targets and autonomous navigation between them. Human input is only required for defining the main objectives. The case study is represented by the implementation of an automated robotic system for watering indoor plants. Here we present...
The challenges related to the monitoring, diagnosis and control of a wind farm are presented. First, Wireless Sensors Networks are investigated, from an Internet of Things point of view: the most used and recent routing protocols, and the methods which can secure the network against attacks. As the volume of collected information is very large and diverse, big data processing frameworks needed to...
Leak or fault detection in the energy and fluids utilities distribution networks represents a topic with important implications, where the safety of life and pollution are the covered priorities. Scientific literature and industry practices include dedicated solutions, suggested by theory and verified by actual use over long periods. Beginning with some of them, this article suggests and improves...
A real – time fire and explosion detection system is presented in this paper. The data being used was acquired by a Wireless Sensor Network, residing in a room. Noise is first rejected from the acquired samples, using an appropriate filter. Next, a model of the stochastic process is computed in real time using a robust – adaptive method. It will be used to predict the temperature's future evolution...
This paper describes a method for leak detection in a water distribution system based on detecting discrepancies between measured data and estimations obtained from the simulation of a water distribution network model. Using this method, the effect of a leak on measured data can be estimated at each node and the deviation from nominal values can be used to find the most probable location of the leak...
Leaks and faults detection in the energy fluids and utilities distribution networks represents an objective with significant implications, where the safety of life and pollution are the included priorities. Reality and scientific literature contains dedicated solutions, validated in time by theory and industry. Starting from a few of these, this paper proposes and analyses several applicative solutions...
The structural identifiability analysis of linear lossy Port Controlled Hamiltonian(PCH) systems is proposed in this paper, by means of the observability and controllability concepts, which characterize a dynamic system. A general result is proved and proposed for the observability of linear lossy PCH systems. As example for the structural identifiability analysis, a DC motor is considered.
Fault or leak detection in the utilities distribution and energy fluids networks represents an objective with significant implications, where, the pollution and safety of life are priorities included. Reality and scientific literature contain dedicated solutions, proposed by theory and validated in time, and industry. Starting from a few of these, this paper proposes and analyzes some applicative...
The main issue of paper consist in proposing a few algorithms and control structures for PV grids which can increase predictability and flexibility degrees with respect to specific disturbances. The starting point of our model is the division of the PV grid in subgroups of optimal dimension and pairings that offer minimal variation between the quantity of energy needed and the one prognosticated....
The paper proposes and implements a performance control structure as a answer to cascade reservoir processes. It is elaborated by relying on the combined decentralized/distributed - decoupled method specific to processes with multiple variables. In every important designing step for the structure parts, we show a few illustrative numerical examples. The intended means is set against the well-known...
The adaptive-robust control strategy, proposed in this paper, combines the advantages of robust and adaptive control, while minimizing the computational load. Usually, a lot of mathematical operations are necessary, which limit the real time applicability of such strategies. By developing a simple, yet useful rule, the number of operations needed to determine if a new controller is needed has been...
The proposed approach presents a real time control structure for managing a photovoltaic grid so as to obtain a stabilized output load, in case of charge and functioning disturbances. Its applicability is validated on a control structure of multiple PV (sub) groups, connected in parallel to provide energy, a situation usually encountered in the renewable energy industry, Virtual Power Plants (VPP),...
This paper describes the implementation of a surveillance, monitoring and teleconference system used by the TELEDIM telemedicine system. Windows tablets and smart phones are used to capture audio and video data and send them through an ad-hoc wireless internet network to surveillance servers.
A novel real time approach structure implementation to manage multiple sources and/or generator systems on supporting the global load, in case of charge and functioning disturbances is proposed. Its applicability is validated on a control structure of two and four constant and variable load sources (with parallel connection), a situation usually encountered these days in the renewable energy branch...
Detection of melanoma in early stages is critical in terms of life expectancy of the patient and, also, in terms of treatment costs. In this context, we investigate the feasibility of implementing an algorithm that uses nonstandardized color images of skin lesions for risk assessment. In this paper we present a methodology for real-time acquisition of quality verified images using smartphones. We...
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