The implementation of a digital system for automatic continuous control object, based on a physical model of the object using a thermal Scada Zenon system

Purpose. Develop a methodology for the implementation of digital control systems for continuous objects on a personal computer, which should provide: bringing the temperature in the chamber to a given value at a given range of air flow in the system; maintaining the temperature in the chamber at a given level at a given range of air flow in the system; visualization and control of the stand of the thermal object; control of fan speed in order to create a disturbing effect; registration of process parameters in the thermal object. The methods. The development is carried out through the phased implementation of a digital control system for a continuous object, implemented on a personal computer. The proposed approach consists of the main stages: a controller is synthesized in a continuous form, which implements the proportional-integral-differential (PID) control law. The simulation of the obtained system is performed in the mathematical package MATLAB. At the next stage on the personal computer the software implementation of the synthesized digital regulator is executed. At the last stage, the hardware elements of the control system were developed and implemented. Findings. The use of this approach in the development of a system of automatic control of a continuous object on the basis of a thermal object allows you to effectively create a complete hardware and software part of digital SAC using Scada system Zenon. This will significantly reduce the duration and cost of commissioning of ACS in production conditions at the actual control facility. Which makes it possible to significantly reduce the duration and cost of commissioning of ACS in production conditions at the actual control facility. The originality. For the first time, a method of creating a control system for thermal objects, based on programmable logic controller with the synthesis of the system in the mathematical package MATLAB. Practical implimintation. The obtained data allow to bring the model as close as possible to the real control system and to perform effective testing of its functioning in non-production conditions.

COMPARATIVE ANALYSIS OF THE MODIFIED MRAC-MIT SYSTEM AND MRAC-LYAPUNOV SYSTEM

The article deals with the comparative analysis of the quality of adaptive thermal object control systems with reference models using the modified MIT rule and Lyapunov rule, implemented in MATLAB-Simulink software complexes (PCs). The proposed control algorithms were tested in laboratory condi-tions and provided the required quality of transition process in a thermal object.

CASCADE CONTROL OF A MULTI INPUT AND MULTI OUTPUT (MIMO) THERMAL CONTROL SYSTEM

Cascade control of a “Multi Input and Multi Output (MIMO) Thermal Control System” is developed for better speed, better reduction of noise, lower overshoot. The thermal object consists of 4 thermally connected modules (three with a heater and one with a cooler), which is a MIMO object – 4 inputs and 4 outputs. The control system is realized with CPU and contains developing of PID control, Autotune system, history data.