Параметрична оптимізація умовно стійких електромеханічних систем методом діаграм якості керування

Abstract

The dissertation for the degree of technical sciences candidate by specialty 05.09.09 – electrical complexes and systems. – NTU "KhPI". – Kharkiv, 2016. The dissertation is devoted to researching and solving parameter optimization problems for multiple-integration system astatic regulators with minimax criterion application. Parametric optimization and control efficiency enhancement methods are analyzed as applied to conditionally stable multiple-integration electromechanical systems through control quality diagram technique. Existence of the optimal solution for conditionally stable electromechanical system control on the basis of a complex control efficiency criterion – Q-factor maximum and stability margin - is theoretically substantiated. Computer-aided techniques are worked out to develop and analyze conditionally stable system control quality diagrams in time and frequency domains in which zones of enhanced Q-factor and stability margin are marked. An engineering technique is validated for control quality diagram application to optimization synthesis of systems with astatism of the 2nd and 3rd order using the control quality diagram technique criterion. Control quality diagram technique criterion based parametric optimization of different conditionally stable electromechanical systems with series and parallel compensation is performed taking into account the control object structure features, including nonminimum phase links as its components. Specific examples of electromechanical system control enhancement via the control quality diagram technique application are considered with the system parameter optimization on the control quality diagram technique minimax criterion. Feasibility of 20% system Q-factor enhancement and 10% increase in the stability margin for a given Q is proved.