Question: E6.4 A control system has the structure shown in Figure E6.4. Determine the gain at which the system will become unstable. FIGURE E6.4 Feedforward system.

E6.4 A control system has the structure shown in Figure E6.4. Determine the gain at which the system will become unstable.

FIGURE E6.4 Feedforward system. + 3 R(s) s+1 + K Y(s) s(s+4)

FIGURE E6.4 Feedforward system. + 3 R(s) s+1 + K Y(s) s(s+4)

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