Briefly explain the essential differences between open and dosed loop control an

Question

Briefly explain the essential differences between open and dosed loop control and give an example of each type of system. In Fig Q8. illustrates a block diagram of a general closed loop control system. Prove that the system's closed loop transfer function is given by: Briefly explain the importance of the characteristic equation 1+G(s)H(s) = 0 The characteristic equation of a closed loop a control system is given as s 2+6s + kp =0. What value of gain kp would you choose if the closed loop system is to possess a fast response with no oscillation in the output? Briefly discuss your choice.

Explanation / Answer

s^2+6s+kp = 0

in order to get faster response and no oscillations

roots should be real and negative thus

take determinent

6^2-4*1*kp = 0

36 - 4kp = 0

kp = 36/4 = 9

thus ans

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