Compare open loop control system with closed loop control system. Also explain closed loop system with appropriate example.
[7 marks]Determine the overall transfer function of the block diagram shown in fig.1 using block diagram reduction techniques. H1 o/p i/p G1 G2 G3 G4 H2 H3 Fig.1
[7 marks]Define following terms: (1) Delay time (2) Rise Time (3) Settling time (4) Peak time (5) Maximum overshoot (6) Steady state error (7) Damping ratio
[7 marks]Obtain the transfer functions X (s)/F(s) for the mechanical system shown in2 Fig.2. Fig.2
[7 marks]Explain standard test signals used in the control system.
[7 marks]Using Routh’s Criterion determine the stability of s6 + 4s5 + 12s4 + 16s3 + 41s2 + 36s + 72 = 0.
[7 marks]Explain the step by step procedure for obtaining Nyquist plot.
[7 marks]Sketch the root locus for the system with K(S+3) G(S)H(S) = S(S+1)(S+2)(S+4)1
[7 marks]Consider a Type-0 system with open loop transfer function G(S) = 1/(1+Ts), Where T= time constant. Obtain its polar plot.
[7 marks]Aunity feedback control system has G(S)H(S) = 80 . Draw the bode S(S+2)(s+20) plot and determine the value of Phase margin, Gain Margin, ω and ω . pc gc
[7 marks]Explain lead compensator in details. Also derive the transfer function equation for lead compensator.
[7 marks]Explain Proportional Integral (PI) controller in details. Also write the characteristics of PI controller.
[7 marks]Define following terms: State variables, State, state space and state vector. Explain the advantages of state variable methods over conventional one.
[7 marks]Obtain the state model of electrical system given in fig.3 Fig.3
[7 marks]