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    Item type:Publication,
    Discrete time robust integral servo with PID × (n-2)/2 Stage PDA Controllers for unstable systems
    (2012-12-01) ;
    Achariyapagon, Prachaya
    ;
    Trisuwannawat, Thanit
    This paper presents a design method for robustness stability results of unstable systems using forward controller employed to PID × (n-2)/2 Stages PDA Controllers which applied to integral servo problem, both continuous and discrete-time control systems, the root loci of this design method are shown the robustness results with the excellence transient response of this closed loop systems, moreover, in case of increasing controller loop gain, the system is still robustly stabilizable with better performance. © 2012 ICROS.
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    Item type:Publication,
    Discrete robust PIDx(n-2) stage PD cascade controller
    (2010-12-01) ;
    Achariyapagon, Prachaya
    ;
    Trisuwannawat, Thanit
    This paper presents a design method for discrete-time parallel with continuous-time design for the two degree of freedom (2DOF) control system using PID (Proportional-Integral-Derivative)x(n-2) stage PD as a cascade controller for a class of n<sup>th</sup> order plant. Both, transient and steady state response specifications are suddenly met when the forward controller is employed. The root loci of this method are shown that the closed loop system is robustly stable with excellence. ©ICROS.