Cascade control means _______________?
Correct answer: B. More than one feed-back loop
- A. Feed forward control
- B. More than one feed-back loop
- C. On-off control
- D. One feed-back loop
Explanation
Cascade control uses a primary feedback loop whose controller sets the target for a secondary feedback loop. Thus it contains more than one nested feedback loop, improving rejection of disturbances entering the secondary process section.
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