Classification of Automatic Controllers Diagrams

Klos, Sviatoslav; Fedoryshyn, Roman; Savytskyi, Volodymyr; Pistun, Yevhen; Матіко, Федір

doi:10.2507/28th.daaam.proceedings.134

Cited by 2 publications

(2 citation statements)

References 4 publications

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“…In order to remove the self-oscillations in ACL a PID controller with PWM is applied [8], [9]. In this case the period of pulses at the input of the controlled plant is much smaller than that in case of a two-point switch controller application.…”

Section: Application Of Pwm For Controlling a Thermal Plantmentioning

confidence: 99%

Improvement of Pulse-Width Modulation Algorithm for Thermal Plant Control

Fedoryshyn¹,

Klos²,

Savytskyi³

et al. 2017

Energy eng. control syst.

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The results of the pulse-width modulation algorithms analysis are presented in the paper. The following two algorithms are analyzed: pulse-width modulator (PWM) based on the sawtooth waveform generator and PWM based on an integrator and a switch element. Mathematical formulae for designing the tuning parameters of PWM algorithms are presented. An improved PWM algorithm is suggested for a programmable logic controller (PLC) operating with integer variables without a filter of the input signal. The improved algorithm provides elimination of the influence of the input signal's noise on the PLC output signal. PLC output relay contact bouncing is eliminated by means of the improved algorithm. The reliability of PLC is improved and the operation time of PLC output relay contact is prolonged thanks to the improved PWM algorithm. The example of PWM application in an automatic controller for controlling a thermal plant is presented. The advantages of the improved PWM algorithm application are demonstrated. The technique for PWM pulses period defining with taking into account the dynamical properties of the controlled plant is presented.

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Section: Application Of Pwm For Controlling a Thermal Plantmentioning

confidence: 99%

Improvement of Pulse-Width Modulation Algorithm for Thermal Plant Control

Fedoryshyn¹,

Klos²,

Savytskyi³

et al. 2017

Energy eng. control syst.

Self Cite

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“…Automatic control is an inseparable part of our daily life [1], [2], [3], and robust stability is one of the most fundamental requirements of practical control systems. It means that the stability must be guaranteed not only for one (nominal) system but also for a whole family of systems.…”

Section: Introductionmentioning

confidence: 99%

Robust Stability of Fractional-Order LTI Systems with Independent Structure of Ellipsoidal Parametric Uncertainty

Matušů¹,

Senol²,

Vašek³

2019

DAAAM Proceedings

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This example-oriented contribution deals with the investigation of robust stability for fractional-order linear timeinvariant (LTI) systems with the independent structure of parametric uncertainty and ellipsoid-shaped uncertainty bounding set. Even though the ellipsoidal uncertainty is dependent by definition, its combination with the independent uncertainty structure is studied in this paper. The robust stability is tested via the application of the value set concept in combination with the zero exclusion condition. An example is elaborated for the family of fractional-order polynomials with a three-dimensional ellipsoidal uncertainty bounding set in order to demonstrate the effectivity of the applied graphical method.

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Classification of Automatic Controllers Diagrams

Cited by 2 publications

References 4 publications

Improvement of Pulse-Width Modulation Algorithm for Thermal Plant Control

Improvement of Pulse-Width Modulation Algorithm for Thermal Plant Control

Robust Stability of Fractional-Order LTI Systems with Independent Structure of Ellipsoidal Parametric Uncertainty

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