Stankovski, Mile

Preferred name
Stankovski, Mile
Official Name
Stankovski, Mile
Main Affiliation
Email
milestk@feit.ukim.edu.mk

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    Experimental Realization of the Coupling Function Secure Communications Protocol and Analysis of Its Noise Robustness
    (Institute of Electrical and Electronics Engineers (IEEE), 2018-10)
    Nadzinski, Gorjan
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    Dobrevski, Matej
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    Anderson, Christopher
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    McClintock, Peter V. E.
    ;
    Stefanovska, Aneta
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    EXTENDED comparative analysis of different heliostat field control algorithms
    (Ss. Cyril and Methodius University in Skopje, Faculty of Electrical Engineering and Information Technologies, 2021-12)
    Andonov, Ivan
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    Ojleska Latkoska, Vesna
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    Modern SCADA Solution for Mitigation of Water Losses in Water Distribution Network
    (ETAI 2024, 2024-09)
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    Stefan Boshkovski
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    This paper explores the optimization and management of a water distribution network using a SCADA system integrated with DMAs (District Metered Areas) and PMAs (Pressure Management Areas) to improve hydraulic characteristics. The study demonstrates the importance of early fault detection, real-time monitoring, and effective pressure management within high-pressure zones to reduce water loss, enhance operational efficiency, and extend the lifespan of infrastructure. It recommends future improvements, including the addition of a new PMA to further regulate pressure, reduce faults, and decrease water consumption. By implementing these strategies, the network can achieve significant financial and environmental benefits, ensuring sustainable and efficient water supply management.
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    Quadratic Model-Based Dynamically Updated PID Control of CSTR System with Varying Parameters
    (Algorithms, 2021-01)
    Stavrov, Dusko
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    Nadzinski, Gorjan
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    Deskovski, Stojche
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    In this paper, we discuss an improved version of the conventional PID (Proportional– Integral–Derivative) controller, the Dynamically Updated PID (DUPID) controller. The DUPID is a control solution which preserves the advantages of the PID controller and tends to improve them by introducing a quadratic error model in the PID control structure. The quadratic error model is constructed over a window of past error points. The objective is to use the model to give the conventional PID controller the awareness needed to battle the effects caused by the variation of the parameters. The quality of the predictions that the model is able to deliver depends on the appropriate selection of data used for its construction. In this regard, the paper discusses two algorithms, named 1D (one dimensional) and 2D (two dimensional) DUPID. Appropriate to their names, the former selects data based on one coordinate, whereas the latter selects the data based on two coordinates. Both these versions of the DUPID controller are compared to the conventional PID controller with respect to their capabilities of controlling a Continuous Stirred Tank Reactor (CSTR) system with varying parameters in three different scenarios. As a quantifying measure of the control performance, the integral of absolute error (IAE) metric is used. The results from the performed simulations indicated that the two versions of the DUPID controller improved the control performance of the conventional PID controller in all scenarios.
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    Dynamic Modeling and Flight Control Design for Multicopter
    (International Review of Aerospace Engineering, 2018-10)
    Bunjaku, Drilon
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    Nadzinski, Gorjan
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    This paper presents a step by step dynamic modeling of the multicopter – quadcopter based on Newton Euler formalism, including the dynamics of the motor and the propellers. The linearization of the nonlinear mathematical model of the quadrotor is derived systematically when yaw angle is not 0 . Consequently, the simulation model of the flight controller based on the cascade control has been designed, which ensures a stabilization of the quad rotor and a robust-like trajectory tracking performance. The proposed cascade control strategy including the outer inverse dynamics provides controlling of the yaw orientation angle. The comparison of a use of a linear cascade PID-PD and the combination of PID-MPC is performed on 3D referent trajectories tracking with and without the presence of periodic external torque disturbances. The results are obtained from the MATLAB simulation model.
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    Comparative Analysis of Different Heliostat Field Control Algorithms
    (Society for Electronics, Telecommunications, Automatics and Informatics of the Republic of Macedonia - ETAI, 2021-09)
    Andonov, Ivan
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    ;
    This study presents the use of various algorithms for control of a field of heliostats, through which a thermal power plant with concentrated solar energy is controlled. The design of the control algorithms consists of several steps. First, in order to obtain the mathematical model of the system, the real system is identified according to the gray box and the least-square method. The data used to identify the system is generated by step excitation on the real system, for a specific sampling period. The resulting mathematical model is used to design and simulate a continuous and discrete PID controller, Mamdani and Sugeno fuzzy logic controllers, as well as ANFIS based fuzzy logic controller. The results of the applied controllers are analyzed and compared, based on the output overshoot, the rise and settling time. It can be concluded that we got best results (least settling time and the least overshoot) when fuzzy logic controller with ANFIS was used, while in terms of speed and rise time, the best results were obtained when discrete PID control algorithm was used.