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Browsing by Author "Ates, Muhammet"

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    Article
    Measurement and Simulation of Power Factor Using Pic16f877
    (Wydawnictwo Sigma-n O T Sp Z O O, 2012) Rustemli, Sabir; Ates, Muhammet
    The aim of the study is to develop a prototype of power factor measurement circuit. In the designed circuit, the power factor is measured using PIC16F877. This paper focuses to design the simple circuit and low-cost. The current and voltage signals of the load are measured at the same phase. Those signals are inserted into PIC16F877 by means of analog circuit. The power factor is calculated by the algorithm written on the PIC16F877. The measurement value of the power factor is displayed on the LCD screen.
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    Article
    Stability and Passivity Analysis of Higher-Order Differential Systems Inspired by Rlc Circuits
    (Wiley, 2024) Ates, Muzaffer; Ates, Muhammet
    This paper discusses the global asymptotic stability and strong passivity analysis of fourth-order nonlinear and time-varying dynamical systems by utilizing the Lyapunov direct method. The mathematical model of the main system is obtained from a non-linear and aging RLC circuit that we have designed before. RLC circuits play an excellent role in the stability of modern system theory. Without the concept of storage elements, the construction of Lyapunov or energy functions for nonlinear and time-varying systems may be difficult. Because of this, although there are many studies on the stability concept, but the subject has not been completed yet. Therefore, this study may present some mathematical technicalities to the Lyapunov stability with physical considerations. The Lyapunov functions obtained from RLC circuits are natural storage functions, and they satisfy the dissipation inequality. The theoretical stability results of the system are also discussed by Lyapunov's linearization method. The relationship between stability and passivity is also given. Meanwhile, we realized that linear system analysis is not a guaranteed way for determining the stability properties of a full system. Finally, the correctness and availability of the proposed approach are verified through simulation results.