摘要：AbstractA simple and optimal method is suggested for the calculation of the set point weighting parameter in PID controllers for unstable FOPTD systems. This method requires equating the coefficients of s and s3both in numerator and denominator of closed loop transfer function for a servo problem. This method gives an uncomplicated equation for the set point weighting parameters (β) and (γ). The performance of the proposed set point weighted controller that uses the β and γ is then compared with that of a method in which the β and y values are obtained by two degrees of freedom controller design technique. The proposed method provides significantly improved closed loop performances when compared to the methods in the literature.
关键词：KeywordsSet point weightingDelay systemsProcess controlinstrumentationunstable systemsH2minimization
