Комбинированный регулятор температуры термостата стенда для исследования термопар

Abstract

Предложены алгоритм работы и методика настройки комбинированного регулятора температуры термостата, обеспечивающего существенное сокращение времени установления температуры в сравнении с классическим ПИД-регулятором. Запропоновано алгоритм роботи та методика налаштування комбінованого регулятора температури термостата, що забезпечує істотне скорочення часу встановлення температури у порівнянні з класичним ПІД-регулятором. The pur-pose of the work is to develop a simple temperature regulator of stand thermostat for thermo-couples research, which will reduce the time of temperature establishment. Tubular ceramic resis-tor was used as a working element. First the PID-regulator of thermostat temperature was imple-mented and studied. For the setup of the PID-regulator on the basis of the experimentally removed acceleration curve with input action in the form of leap, as a result of solving the identification problem, the thermostat dynamic model was obtained. This model was investigated in the interac-tive program for modeling, imitation and analysis of dynamic MATLAB&SIMULINK systems for the purpose of regulator’s speed optimization with a given temperature tolerance. As a result we found the speed limit of the classical thermostat PID-regulator. The combined P-PID-regulator of temperature and the algorithm of its work were developed to increase thermostat speed. The P-regulator is used for forced heating at thermostat start. Then the main PID-regulator providing a zero error of regulation and effective temperature stabilization at a set level turns on. A corres-ponding transition criterion was developed to find the moment of transition from P- to PID-regulator. The suggested technique of the regulator setup provides the adaptability of its parameters to the difference between setting and room temperature. Natural tests showed that the devel-oped work algorithm, transition criterion and combined P-PID-regulator’s setup technique provide an increase in thermostat speed by 2,3 times in comparison with the classical PID-regulator. In this case the time of temperature establishment in the thermostat does not exceed 1,5 minutes at the set tolerance 0,2 0C.