Transactions of the Society of Instrument and Control Engineers
Online ISSN : 1883-8189
Print ISSN : 0453-4654
ISSN-L : 0453-4654
Design of Sub-Optimal Digital Control System Tracking Polynomial-Type Reference Input
Kazuo AIDA
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1984 Volume 20 Issue 8 Pages 677-684

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Abstract
In this paper a procedure for designing a multivariable control system to track a polynomialtype reference input.
The optimal state feedback gains for augmented system incorporating integrators are designed using the usual linear regulator technique. The added feedforward control loops for the reference input and initial state variables are designed using another time-multiplied performance index.
This control system has faster response and shorter settling time than that with only feedback control loops. Moreover we can prevent reset windup even if the control signal exceeds the upper or lower bounds of the actuator. An illustrative example demonstrates the efficiencies of this control system.
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