Question

PID controllers can affect the culture medium.

(a) True

(b) False

This question was addressed to me during an internship interview.

I'm obligated to ask this question of Monitoring and Control of Bioreactors in division Reactor Engineering of Bioprocess Engineering

Answer 1

Correct answer is (a) True

Easy explanation: Proper adjustment of PID controllers usually provides excellent regulation of the measured variable. However, poorly tuned controllers can de stabilize a process and cause continuous or accentuated fluctuations in culture conditions.