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Industrial PID controller with visualization and bumpless switching
Kupčík, Michal ; Chomát, Luděk (referee) ; Pivoňka, Petr (advisor)
This work informs reader about different program implementation of PID controller. Next it contains description of four basic events, which cause bump switching. For each of these four events is made analysis, why bump is caused and subsequently is made description, how to eliminate these bumps. The result is set of equations, which properly adjust regulators parameters. On big number of graphs there is proved, that after application of these equations, switching become bumpless. Another part of this dokument is a description, how to illustrative demonstrate bumpless switching in MATLAB's script, in B&R's virtual control system AR000 and on real system, whitch will be controled by B&R's control system type Power Panel.
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Brushless dc motor control under power loss condition
Šedivý, Jozef ; Veselý, Libor (referee) ; Blaha, Petr (advisor)
Táto diplomová práca sa zaoberá implementáciou bezpečnostnej funkcie pre elektrický aktuátor, ktorá spočíva v riadení BLDC motora, po výpadku napájacieho napätia, keď je aktuátor poháňaný vstavanou pružinou.. Celé riadenie motora je navrhnuté v prostredí Matlab-Simulink technikou nazývanou návrh systému z modelu. Následne pomocou automatického generovania kódu bol získaný zdrojový kód, ktorý bol použitý v reálnom aktuátore a odtestovaný v reálnych podmienkach. Cieľom týchto testov bolo overiť reálnu možnosť nasadenia vyvinutých algoritmov v reálnych, komerčne dostupných produktoch.
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Simulation models of human operator.
Boháč, Petr ; Horák, Karel (referee) ; Havlíková, Marie (advisor)
This paper deals with simulation models of the human operator controlling lateral position of simulated vehicle. I am comparing parameters and quality of the McRuer human driver model and the PID controller. Simulated system is single-track vehicle model. Simulated driver is tasked to pass a Moose test with this vehicle model. I am using the simulated annealing method to find optimal parameters of the driver model and then I visualize realized test in 2D and 3D visualization. In the end of this paper I compare simulations of the driver models and assess achieved results.
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Performance, robustness and implementation of controllers
Buchta, Luděk ; Michal, Mrázek (referee) ; Pivoňka, Petr (advisor)
This master‘s thesis deals with the design of modern process control algorithms suitable for SISO industrial control equipments. In this thesis the analysis of the controller design methodology using Mixed-sensitivity function is described. This method consists in shaping frequency characteristics of the sensitivity function and complementary sensitivity fiction using the weighting functions. The proposed H controllers are compared with the classical structure of a discrete PID controller with filtered derivative part. The proposed controllers are compared in terms of robustness, performance, complexity of the design and requirements necessary for their practical application (anti-windup, smooth switchover). Robustness of the controller is evaluated on the basis of modulus stability margin. Estimation of model´s parameters is solved least-square method. The proposed control system consists of an industrial PC and Automation Panel from the company B&R, decentralized system I/O and the real plant. Visualization for control workplace was created in the program Automation studio. This visualization is used to the easy transfer of information from a controlled process.
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Industrial PID controller with autotuning and visualisation
Vávra, Pavel ; Dvořáček, Martin (referee) ; Pivoňka, Petr (advisor)
This thesis deals with implementation of industrial used controlling block into Power Panel equipment of B&R in integrated development environment Automation Studio 3.0.71. It is PID controller with autotuner and visualization, which allowed bumpless transfer among controlling algorithms and manual control. PID and I-PD controllers with filtering of derivative action and dynamic antiwindup were implemented. Parameters of PID controller is possible to tune with the aid of ultimate gain and ultimate period according rules of Ziegler-Nichols. Ultimate parameters of controlled plant is possible to acquire with the aid of two identification methods, recursive least squares method and relay feedback. Recursive least squares method was implemented with directional forgetting. For relay feedback were used two types of relays: ideal and saturation relay for improving accuracy of searched ultimate values. The whole solution is programmed in ANSI C which Automation Studio supports. Created controller is control with the aid of touchscreen which is integrated in Power Panel. Trends of process values are viewed on the screen too. For comparison adaptive controller by B&R was implemented. This contoller is standardly supplied with Automation Studio in LoopConR library. All created algorithms were first validated on mathematical model of plant and then on real model in laboratory. The first part of thesis deals with theoretic analysis of used methods. The practical realization is described in the second part of this diploma thesis.
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Suitability Assessment of Learning for Heuristic Adaptive Control of Drives
Kerek, Milan ; Krejsa, Jiří (referee) ; Březina, Tomáš (advisor)
The bachelor thesis is aimed to explore the possibilities of using artificial neural network in order to controll nonlinear dynamic systems. In addition the document shows the options to combine neural controllers with linear controllers, such as PID regulator, state space regulator with compensation error. Simulation models were designed in environment of Matlab/Simulink. Neural networks were exploit with the help of Neural Network Toolbox-u. Designed regulators were tested on regulating angular velocity of nonlinear system of 2nd order – wound DC motor.
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Instruction for prepartions of fatigue experiment on testing device Instron
Fröhlich, Vladislav
Whith regard absence resonable and short operating instructions of testing device Instron on our workplace, I am decision to creation operating instructions for software accessories this testing device. Manual should by operator. The operator must competent make up composition block examination to device or should the unschooled engineer as short instruction for disposition harmonic loading and for creation complicated block examination. This operating instructions includes process settings PID controller and optional setting calibration of sensors.
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