Project ForgeInstrumentation & Process Control
Controller Modes
GATE 2018
Medium
A first-order process Gp=2/(7s+1) is controlled by a proportional controller (gain 3.2). Adding integral control action (integral time 5 min) leads to an increase in
- Aoffset
- Bspeed of response
- order of the closed loop system
- Dproportional band
Explanation
Adding integral action introduces an extra integrator (pole), increasing the order of the closed-loop system by one, while eliminating offset.
Source: GATE CH 2018 (2018)
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