Control of precision positioning of low rigid high inertia objects

The article focuses on the problem of control of precision angle positioning of low rigid and high inertia objects, such as steam turbine. Analysis includes mathematical modeling dynamics of positioning and control system. It is based on computing calculation in Matlab & Simulink. The problems of identification of dynamic system parameters are considered. This paper considers the mathematical model and steps required to identify the dynamic model of the positioning system with the method of least squares. In its turn, it is based on series of experiments at the angular positioning of the power turbine rotor. Identification was performed by the method of least squares with dummy variables modification. Some nonlinear features of considered system depending on the boundary friction (Striebeck curve) were revealed with the use of dummy variables.