Identification of Controlled Plant and Development of Its Model by Means of PLC
Journal Title: Energy Engineering and Control Systems - Year 2016, Vol 2, Issue 2
Abstract
The results of experimental and theoretical investigation of dynamic and static characteristics of a thermal object (electric oven) as a controlled plant are presented in the paper. The up-to-date microprocessor instruments were applied during the investigation. The experimental study of the plant was made by obtaining the step response curves for the controlling action channel and for the disturbance channel. Fifteen step response curves were recorded during the study. These curves were applied for development of the mathematical model of the plant in the form of static characteristics equations, transfer functions and differential equations. The structure of the model was chosen. The numerical values of the model parameters were calculated. The adequacy of the model was verified. The relative errors of the calculated values of the static characteristics points do not exceed 5 %. The maximum reduced error of the simulated step response curve in comparison to the experimental curve is 7% for the proposed combined method of defining the time constants. The developed model was implemented in a programmable logic controller in order to provide the possibility of studying the automatic control loop with various control laws.
Authors and Affiliations
Roman Fedoryshyn, Sviatoslav Klos, Volodymyr Savytskyi, Oleh Masniak
Keywords
Related Articles
- EP ID EP256970
- DOI 10.23939/jeecs2016.02.069
- Views 94
- Downloads 0
Design of Optimal Filter for Analog Signal
The technique for designing the optimal value of the filter time constant for analog signal is presented in the paper. This technique is based on the objective function which takes into account the quality index of the f...
Evaluation of Influence of Wall Slip on Measurement of Rheological Parameters by Means of a Hydrodynamic Measuring System
The technique for processing the output signals of hydrodynamic measuring system of rheological parameters of non-Newtonian fluids is presented in the paper. Hydrodynamic measuring system is built on four serially connec...
Modeling of Hydraulic Load of Electric Drive in Electrical Complex of Pumping Station
The paper analyses the contemporary state of the electric drive hydraulic load modelling in the pumping stations’ electrotechnical complex applications. It was found that in the vast majority of cases, mathematical model...
Peculiarities of Non-Stationary Pressure Measurement in Real Time
Nowadays, industrial development creates new and more complex processes leading to emergence of specific conditions for use of sensors and therefore specific measurement tasks. These circumstances lead to new requirement...
Efficiency of Modern Wind Turbines in Real Conditions
One of the problems of wind energy is determined insufficient information available about the effectiveness of wind farms in the real life conditions, due in particular to commercial issues of use. On the one hand it is...