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Browsing International Conference on Electronics, Communications and Computing (IC|ECCO) by Author "COJUHARI, Irina"

Browsing International Conference on Electronics, Communications and Computing (IC|ECCO) by Author "COJUHARI, Irina"

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  • The algoritm of tuning the PID controller to the unstable model of object with inertia second order 
    IZVOREANU, Bartolomeu; POTLOG, Mihail; COJUHARI, Irina; FIODOROV, Ion; MORARU, Dumitru; POPOVICI, Nadejda; SECRIERU, Adrian (Tehnica UTM, 2019)
    The unstable model of the control object with inertia second order with known parameters is given. In order to tune the PID algorithm to these types of control models, several methods can be used as the root-locus ...
  • Analysis and treatment of risks in information systems 
    LISNIC, Inga; SCROB, Sergiu; COJUHARI, Irina (Tehnica UTM, 2019)
    The risk is the mathematical estimation of the probability of human loss, material damage, environmental damage, social and psychological damage, over a reference period, respectively future and in a given area, for a ...
  • Automatic control system for crop cultivation 
    FIODOROV, Ion; COJUHARI, Irina; IZVOREANU, Bartolomeu; MORARU, Dumitru; BALABAN, Eugeniu (Tehnica UTM, 2019)
    Nowadays, greenhouses are widely used, they permit to exclude the influence of climatic factors and to ensure a stable crop of fresh vegetables. For the large scale in the greenhouses is used the automation, that suppose ...
  • Comparative analysis of the PID algorithm synthesis at the object model with astatism and dead time 
    IZVOREANU, Bartolomeu; SECRIERU, Adrian; FIODOROV, Ion; COJUHARI, Irina; MORARU, Dumitru; POTLOG, Mihail (Technical University of Moldova, 2021)
    The paper presents the comparative analysis of the synthesis methods of the PID tuning algorithm for the model of the object with first degree astatism and dead time. In the practice of industrial and technological process ...
  • Context Free Grammar Representation by the Colored Petri Net 
    LISNIC, Inga; COJUHARI, Irina (Technical University of Moldova, 2021)
    Specification technique like Colored Petri Net (CPN) allows for the formal description and analysis of the discrete event systems. In this paper, it is presented the methodology for Context Free Grammar design, specification ...
  • Decision-making processes for intelligent agents 
    LISNIC, Inga; SCROB, Sergiu; COJUHARI, Irina (Tehnica UTM, 2019)
    The purpose of this article is to harmonize decision-making processes. The theory of decision-making is a totality of methods (mathematical, intuitive or otherwise) designed to find the best possible variants that allow ...
  • Identification of the mathematical model of the control object based on the genetic algorithm 
    COJUHARI, Irina; FIODOROV, Ion; IZVOREANU, Bartolomeu; MORARU, Dumitru; LISNIC, Inga (Tehnica UTM, 2019)
    In industrial automation is widely used the PID control algorithm and there are many tuning methods of typical controllers as: the empirical methods based on the classical methods of finding the tuning parameters developed ...
  • Implementation of dual education at Technical University of Moldova 
    SUDACEVSCHI, Viorica; BUGAIAN, Larisa; CIORBĂ, Dumitru; FIODOROV, Ion; COJUHARI, Irina; MUNTEANU, Silvia (Technical University of Moldova, 2022)
    The article analyses the implementation of the dual study model for higher education at the Technical University of Moldova. This goal was one of the basic ones within the Erasmus+ COOPERA project "Integrating Dual Higher ...
  • Monitoring software for crop cultivation 
    FIODOROV, Ion; COJUHARI, Irina; IZVOREANU, Bartolomeu; MORARU, Dumitru; VASILIU, Gheorghe (Tehnica UTM, 2019)
    On the large scale, there is used the greenhouses, which are providing the most comfortable conditions for the growing of plants in limited space. The microclimate of a greenhouse must be balanced and it should be taking ...
  • The PBL model implementation within the Software Engineering Study Program 
    CIORBĂ, Dumitru; COJUHARI, Irina (Tehnica UTM, 2019)
    PBL (Problem Based Learning) is the learning philosophy that involves students in finding problems and identifying solutions to overcome them. There is no one PBL model suitable for all purposes. However, the PBL-based ...
  • The PID Tuning Procedure for Performance Optimization of the Underdamped Second-Order Processes 
    COJUHARI, Irina (Technical University of Moldova, 2022)
    In this work, it is proposed the procedure for tuning the PID controller to the underdamped second-order systems, that offers the possibility to optimize the performance of the system. The analytical expressions for ...
  • Synthesis of the auto-tuned pid controller to the inertial object 
    BALABANOV, Anatolii; IZVOREANU, Bartolomeu; POTLOG, Mihail; FIODOROV, Ion; COJUHARI, Irina; MORARU, Dumitru (Tehnica UTM, 2019)
    In the paper, it was developed the mechanism for adaptation of the transfer coefficient of PID controller to the model of object with inertia first order and time delay; schema for simulation of the control system with ...
  • Synthesis of the PID Algorithm for Models of Objects with Double Astatism and Dead Time 
    IZVOREANU, Bartolomeu; FIODOROV, Ion; COJUHARI, Irina; SECRIERU, Adrian; MORARU, Dumitru; POTLOG, Mihail (Technical University of Moldova, 2021)
    The paper summarizes the tuning algorithm for models of objects with inertia and astatism of the second degree and dead time, which describe the dynamics of various technical objects and technological processes. These ...
  • Synthesis of the PID controller to the system with maximum stability degree based on the genetic algorithm 
    COJUHARI, Irina; IZVOREANU, Bartolomeu; FIODOROV, Ion; MORARU, Dumitru; LISNIC, Inga (Tehnica UTM, 2019)
    The control problem in the various industrial applications is one of the most important problem, on which depends the high performance of the automatic control system. At the automation of the industrial processes in a ...
  • Synthesis the PID Control Algorithm for Speed Control of the DC Motor based on the Genetic Algorithm 
    MELNIC, Vladimir; COJUHARI, Irina (Technical University of Moldova, 2021)
    In this paper, it is proposed to use the genetic algorithm for synthesis the PI and PID control algorithms for speed control of the DC motor, according to the imposed performance, namely settling time. The obtained results ...
  • The tuning method of the PID controller to the underdamped systems 
    COJUHARI, Irina (Technical University of Moldova, 2021)
    In this work, it is proposed the method for tuning the PID controller to the second order underdamped systems. The method was developed based on the maximum stability degree criterion and there are obtained the analytical ...
  • Tuning the Fuzzy Controller for Speed Control of the DC Motor 
    MELNIC, Vladimir; COJUHARI, Irina (Technical University of Moldova, 2022)
    In this paper, it is developed the fuzzy controller for speed control of the DC motor. The obtained results of tuning the controller were compared with maximum stability degree method with iterations and genetic algorithm. ...
  • Tuning the PID Controller to the Object Model with Second-Order Inertia with Identical Elements and Time Delay by the Modified Polynomial Method 
    IZVOREANU, Bartolomeu; SECRIERU, Adrian; FIODOROV, Ion; COJUHARI, Irina; MORARU, Dumitru; POTLOG, Mihail (Technical University of Moldova, 2022)
    The paper presents the procedure for tuning the PID control algorithm to the object model with secondorder inertia with identical elements and time delay according to the modified polynomial method. Methods that can be ...

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