Chemical Engineering > GATE 2011 > Control System Stability
A PID controller output p(t), in time domain, is given by p(t)=30+5e(t)+1.25∫0te(t)dt+15(de(t)/dt) where e(t) is the error at time t. The transfer function of the process to be controlled is Gp(s)=10/(200s+1). The measurement of the controlled variable is instantaneous and accurate.
The characteristic equation of the closed loop is
The characteristic equation of the closed loop is
Correct : b
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