Week #12: (4/11-15) Parallax Process Control Ch. 8

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rjagodowski
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Joined: Fri Sep 04, 2015 6:59 pm

Week #12: (4/11-15) Parallax Process Control Ch. 8

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This week we're going leave the regular Control Systems text in order to jump ahead a bit to Chapter 8 in the Parallax Process Control Text discussing PID Control. Specifically, we're going to emphasize the processes through which a microcontroller can perform Proportional, Integral and Differential calculations. I've attached a pdf of Chapter 8 here for your convenience:
Process-Control-Text-Chapter 8_v1.0.pdf
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Figure 8-1 on page 249 shows a block diagram of a PID Control System and Figure 8-4 on page 252 shows a typical analog circuit showing the PID control elements (op-amps, R's & C's mostly).

Our focus will be on Table 8-1 on page 272. It's attached here and printed copies will be distributed in class on 4/11.
Table 8-1_p272.jpg
Table 8-1_p272.jpg (65.06 KiB) Viewed 1387 times
This table is based upon the Classical PID Formula presented on page 248 of the Process Control Text:
Classical PID Formula.jpg
Classical PID Formula.jpg (147.74 KiB) Viewed 1387 times
Our task on Monday, 4/11, will be to complete this chart and hopefully understand the calculations the BS2 will use to perform the PID calculations required in Chapter 8 experiments.

A pdf containing the above formula and graph is attached below and a hardcopy will be distributed in class on 4/11.
PID Controller Handout Worksheet v16.1.pdf
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