DOI 10.17586/0021-3454-2019-62-3-199-207
UDC 62-506
SYNTHESIS OF ROBUST CONTROLLERS FOR AN OBJECT WITH DELAY USING TRADITIONAL CONTROL LAWS
; St. Petersburg State Technological Institute, Department of Processes Automation in Chemical Industry; Post-Graduate Student
O. A. Remizova
St. Petersburg State Institute of Technology (Technical University), Department of Automation of Processes in Chemical Industry;
V. V. Syrokvashin
St. Petersburg State Institute of Technology (Technical University), Department of Automation of Processes in Chemical Industry; Cand. Techn. Sci.
A. L. Fokin
St. Petersburg State Institute of Technology (Technical University), Department of Automation of Processes in Chemical Industry; Professor
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Abstract. A method is proposed for synthesis of robust controllers based on PI and PID control laws for linear object with delay in the presence of parametric uncertainty of the inertial part and the uncertainty of setting the delay value. The method is based on robust Nyquist stability criterion and dynamic compensation technique. It is argued that the use of the proposed approach allows for a compromise between the rudeness of the control system and its performance.
Keywords: disturbance compensation, robust control, delay in control, transfer function, nominal system, system accuracy, steady-state mode, servo system, predictor
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