Lab 06-Closed Loop -SIMULINK Rev1

Lab 06-Closed Loop -SIMULINK Rev1 - ECH 4323L Lab 6 –...

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Unformatted text preview: ECH 4323L Lab 6 – Closed-Loop Simulations 2 Use the following tuning parameters known as ITAE (set-point) settings for a PI Chemical Engineering Department University of Florida controller: Kc = 1.2 ECH 4323L / ECH 6326 / COT 3502 / ECH4123 !I = 14.1 !D = 0 LABORATORY 6 where the ideal PID controller is defined by the standard formula " % 1 G c (s) = K c $1 + + !d s ' $ ' # ! Is & COMPUTER SIMULATION STUDIES OF THE DYNAMICS OF A CLOSED-LOOP SYSTEM Use these values to specify the parameters of the PID Controller block in the SIMULINK diagram, which are defined as follows: USING SIMULINK P = Kc Student Name:______________________________ " = Kc/ !I D = Kc !D Download the file available in the link entitled SIMULINK MINIGUIDE (UT-AUSTIN/UCSanta Barbara Tutorial) from the course web site. You will find the link in the Matlab where the ideal PID controller is defined by the equivalent formula 1 G c (s) = P + I + Ds s Resources page. Follow the instructions given in steps 2.1 to 2.10, which follow the subtitle “Construction of a Closed-Loop Block Diagram (Chapters 11 and 12)” found on page 6 of the document. Note: Your figure may not be identical to Figure 9, because the PID settings listed NOTE: The Miniguide refers to a textbook example, a table, and to figures that are no longer above may be somewhat different from those used to generate Figure 9. Furthermore, Figure 9 in the UTA-UCSB Miniguide is apparenty created using ITAE (load) controller settings, and we are using the ITAE (set-point) settings instead. included in the current edition. More specifically, Example 12.7 and Table 12.5 mentioned in the Miniguide have been removed from the textbook. Please ignore all such references. All information missing from the Miniguide that may be needed to complete the assignment is given in this handout. 3.0 A printed copy of the closed-loop load response (regulation test) plot shown in Figure 10 of the SIMULINK Miniguide document, created by your own SIMULINK simulation. The title of the figure should also include your name. Your deliverables are the following: Use the following tuning parameters known as ITAE (load) settings for a PI controller: 1.0 A printed copy of a SIMULINK model identical to the one shown in Figure 8 of the SIMULINK Miniguide document. 2.0 Kc = 1.9 A printed copy of the the closed-loop set-point response (servo test) plot shown in Figure 9 !D = 0 of the SIMULINK Miniguide document, created by your own SIMULINK simulation. The title of the figure should also include your name. © Oscar D. Crisalle 1997-2010 !I = 7.3 and then use these values to specify the equivalent P, I, and D parameters of the PID Controller block in the SIMULINK diagram. ECH 4323L Lab 6 – Closed-Loop Simulations 3 Note: Your figure may not be identical to Figure 10, because the PID settings listed above may be somewhat different from those used to generate Figure 10. 4.0 Use your SIMULINK simulation software to produce a printed copy of a comparison of the responses obtained by PID controllers adjusted using the ITAE PI settings optimized for the set-point (controller parameters values given in part 2 above) and load (values given in part 3) modes. The figure should be presented in a fashion similar to that of Figure 11 of the SIMULINK Miniguide document. The title of the top figure should also include your name. NOTE: the top plot in Figure 11 contains two curves, each one representing the results of a servo test where the controller is tuned using (1) the ITAE (set-point) parameters of part 2 of this exercise (solid line), and (2) the ITAE (load) parameters of part 3 of this exercise (dashed line). Analogously, the bottom plot in Figure 11 contains two curves, each one representing the results of a regulation test where the controller is tuned using (1) the ITAE (set-point) parameters of part 2 of this exercise (solid line), and (2) the ITAE (load) parameters of part 3 of this exercise (dashed line). Note: Your figure may not be identical to Figure 11, because the PID settings used above may be somewhat different from those used to generate Figure 11. ...
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