Krikhovetskyy G. Parametric synthesis of digital regulators of control systems of temperature electrical and gas furnaces

The thesis is devoted to rise of quality (decrease of dynamic errors and rise of speed) of digital-analogue automatic control systems of parameters of electrical and gas furnaces by application digital optimum on speed, fuzzy (working on the basis of fuzzy logic) and PID-controllers. The techniques of parametric synthesis fuzzy (working on the basis of fuzzy logic) and PID- controllers used together with predictor of Smith, for automatic control systems of parameters of electrical and gas furnaces in view of a dead time in controlled objects. For systems with objects of a dead time the technique of parametric synthesis of digital optimum on speed controllers is advanced, by which operation there is no necessity for usage predictor of Smith. The digital controllers for systems of automatic control of parameters electrical and one and two-line gas furnaces are synthesized. On the basis of a technique of synthesis of digital optimum on speed controllers in the interactive system MATLAB for systems of automatic control of parameters electrical and one and two-line gas furnaces the block diagrams of optimum on speed controllers, “approximating” input effect by linearly changed functions of time, with the additional block designed which after generation of “controlling” impulses by the mainframe, generates impulses of “support” on time slices of a dead time. The researches of digital-analogue systems of automatic control of parameters of electrical and gas furnaces with synthesized digital optimum on speed, fuzzy and PID- controllers are carried out at step and arbitrary input effects. The comparative numerical estimates of an overall performance of controllers of different types are given with the purpose of the guidelines to practical application in concrete systems of autocontrol by parameters of electrical and gas furnaces.