Kompenzatorji mrtvega časa regulacija procesov z dolgim mrtvim časom

diplomsko delo univerzitetnega študijskega programa I. stopnje

Blaž Vidovič (Author), Miloš Bogataj (Mentor), Sanja Potrč (Co-mentor)

Abstract

Namen diplomske naloge je bil ugotoviti vpliv različno dolgih mrtvih časov na regulacijo procesov 1. in 2. reda. Mrtvi čas, v dinamičnih sistemih, predstavlja časovni zamik med dejansko spremembo vhodnega signala in spremembo izhodne spremenljivke, ki je posledica časa, potrebnega za prenos informacije skozi sistem. V delu smo izvedli simulacije v računalniškem orodju Simulink, za servo in regulacijske probleme. Izvedli smo tudi regulacijske simulacije sistema z motnjo šuma. Primerjali smo učinkovitost regulacije sistema, reguliranega z navadno PID povratnozančno shemo, s shemo regulirano s Smithovim prediktorjem. Rezultati kažejo, da je Smithov prediktor primernejša rešitev za regulacijo sistemov z dolgim mrtvim časom tako v pri sledenju referenčne vrednosti, kot tudi v primeru regulacijskih problemov in regulacijskih problemov z dodano motnjo šuma, saj z njim dosežemo manjše oscilacije in hitrejšo vzpostavitev stacionarnega stanja. Iz rezultatov je razvidno tudi, da so regulacijske sheme v sistemih z mrtvim časom učinkovitejše pri blaženju nizkofrekvenčnega šuma kot visoko frekvenčnega šuma.

Keywords

regulacija procesov;PID regulator;Smithov prediktor;mrtvi čas;diplomske naloge;

Data

Language:	Slovenian
Year of publishing:	2024
Typology:	2.11 - Undergraduate Thesis
Organization:	UM FKKT - Faculty of Chemistry and Chemical Engineering
Publisher:	[B. Vidovič]
UDC:	681.5.033:66.012(043.2)
COBISS:	216339459
Views:	40
Downloads:	22
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	English
Secondary title:	Dead time compensators control of processes with long dead-time
Secondary abstract:	The purpose of this thesis was to determine the impact of varying dead times on the control of first and second-order processes. In dynamic systems, dead-time represents the time delay between the actual change in the input signal and the resulting change in the output variable, which is due to the time required for information to be transmitted through the system. The work involved conducting simulations in the Simulink software for both servo and control problems, as well as performing control simulations for a system with disturbance in the form of noise. We compared the quality of system control using a standard PID feedback control scheme with a scheme incorporating the Smith predictor. The results show that the Smith predictor is a more suitable solution for controlling systems with long dead-time, both in tracking the reference value and in control problems and control problems with added noise disturbance. It achieves fewer oscillations and a faster steady-state. The results also show that control schemes in systems with dead-time are more effective at damping low-frequency noise compared to high-frequency noise.
Secondary keywords:	process control;PID controller;Smith predictor;dead-time;Simulink;
Type (COBISS):	Bachelor thesis/paper
Thesis comment:	Univ. v Mariboru, Fak. za kemijo in kemijsko tehnologijo
Pages:	1 spletni vir (1 datoteka PDF (VIII, 30 f.))
ID:	24819315