IMPLEMENTATION OF THE TEMPERATURE CONTROL CONTROLLER AND MONITORING OF THE MICROCLIMATE WITH FRACTIONAL DERIVATIVES IN THE CONTROL LAWIN THE GERMINATION CHAMBER
One of the main problems in the development and implementation of automatic systems is the complexity of controlled technological processes, manifested in various uncertainties of external influences, in particular, the spectral composition of the perturbations acting on the controlled object, which do not allow correctly apply the optimal filtering methods, which is typical for ACS in the systems of protected of the soil. Traditionally, it is customary to solve problems of optimal synthesis of automatic control systems with the help of integro-differential equations in ordinary derivatives. It has been established comparatively long ago that a number of objects and processes do not fully correspond to integer models, when, for example, optimization of the controller's transfer functions reveals the need for power dependencies on time and frequencies with weekly exponents. Known work in this area is simulation modeling with the formation of frequency response with a specified cutoff frequency and the oscillation coefficient M in the Mathcad environment with the "Optim- MGA" application. In the proposed paper, the root method is used to calculate the settings of a controller of the form where the exponents, are always less than unity, in order to reduce the noise components in the feedback system and simultaneously increase the controller's speed. Transfer function of the temperature control object-germination chamber in the greenhouse farm of the RGAU - TSA named after K.A. Timiryazev, needed to adjust the operating mode of the controller, was obtained experimentally by recording the characteristics of the so-called. the acceleration curve in the recording function mode in the developed WEB site of the controllers. Arduino is an application in the Arduino controller. Based on the results of recording the temperature function from time to digital sensors with the activation of the graphic interface, the necessary time constant and transport delay were obtained. It is shown that the root method makes it possible at the engineering level of the maintenance personnel to carry out the necessary adjustment of the controller, depending on the temperature conditions and degree of adiabaticity of the germination chamber walls.