Kotlyarov V. Synthesis of stable electromechanical systems with negative viscous friction and observers

Subject of research - stability of control processes in electrical drives with friction loading. Aim of research - maintenance of stability of 2-mass electromechanical systems with a negative viscose friction which provide removal of self-excited oscillations. Research techniques - modal, optimal and robust control methods, control systems identification and analysis of stability methods, computer and physic simulation. Theoretical and practical results - synthesis of controllers and observers is executed which provide the stability of 2-mass electromechanical systems with a negative viscose friction. The influence of regulators and observers on the control systems stability areas are explored. The methods and means of decreasing a negative influence of observers are proposed. Microprocessor observer realization is made. Novelty - methods of synthesis of the closed electromechanical systems with negative viscous friction have received development, conditions of full observability of electromechanical systems with friction loading and conditions of observers invariancy to frictional loading for the first time are established, application of the reduced and in parallel connected observers for such systems for the first time is proved, the method of placement of observers characteristic polynom roots is advanced. Degree of apply - in Institute for gas transportation of "UKRTRANSGAZ" company, educational process. Branch of application - electrotechnical, metallurgical and metalcutting, gas transport.