d) Ysp Problem 6. In the direct synthesis method (section 12,2,1), desired close-loop transfer function, is used for con

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D Ysp Problem 6 In The Direct Synthesis Method Section 12 2 1 Desired Close Loop Transfer Function Is Used For Con 1 (76.42 KiB) Viewed 37 times

d) Ysp Problem 6. In the direct synthesis method (section 12,2,1), desired close-loop transfer function, is used for controller tuning. The derived PID settings, such as Kc, T, and tp, normally work very well for set point tracking, but not for disturbance rejection. In fact, in the control of a chemical process, the disturbance rejection is more important than set point tracking. Hence, it has been proposed to use d a as the desired close-loop transfer function instead. Assume that Y 1 Da = TCS +1 Ĝ(s) Ga(s) = Ĝ(s) K = TS+1 Here, Tc is the desired closed-loop time constant, and Ĝ(s) is the transfer function of process model. Use the direct synthesis method to derive the expressions of PID controller settings.