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  3. 1 a feedback control loop is represented by the block...

Question: 1 a feedback control loop is represented by the block...

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1. A feedback control loop is represented by the block diagram of Fig. 7-2.2. The process transfer function is given by GI (S) = (tjs + 1)(T2s + 1)(3s+ 1) where the process gain is K-: 2.5 %TO/%CO and the time constants are T] 5 min τ2 0.8 min τ3_:0.2 min Determine the controller tuning parameters for quarter decay ratio response by the ultimate gain method for (a) A proportional (P) controller. (b) A proportional-integral (PI) controller. (c) A proportional-integral-derivative (PID) controller.
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