Suggestions to Food for Thought Questions
Chapter 1
Section 1.2.6. 1
could be both positive and negative,
positive, and
positive. 3 Its main role is to compensate steady-state errors, however, it also increases dynamic response speed. 5 Yes. This is a quite simple and effective approach to reduce overshoot in the reference response.
Section 1.3.3. 2 No, because it is not safe to conduct open-loop experiments for unstable systems and the tuning rules are derived for stable systems. 4 System could easily become unstable. 6 Time delay, time constant and steady-state gain. 8 Cohen-Coon tuning rules produce larger
, smaller
and
.
Section 1.4.4. 1 Decrease. 3 No, decrease.
Chapter 2
Section 2.2.3. 1 Not oscillatory. 3 Because the coefficients of the denominator are real. 5 No.
Section 2.3.3. 2 Yes. 4 Combination of , and .
Section 2.4.4. 1 Yes. 3 It is simpler for ...
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