The characteristic equation for the control system with a closed loop transfer function G1/1 + G2 is given by 1 + G2 = 0. The characteristic equation for the control system_________________?
Correct answer: D. All A , B & C.
- A. Depends only upon the open loop transfer function
- B. Determines its stability
- C. Is the same for set point or load changes
- D. All A , B & C.
Explanation
The characteristic equation comes from the denominator of the closed-loop transfer function, and its roots determine stability. For a fixed feedback system it is independent of whether the input is a set-point change or a load disturbance, so all three statements apply.
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