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Output system steam valve valve angle output steam

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Unformatted text preview: to another Laplace transform of system output “System” Steam Valve Valve Angle “Output” Steam Flow Steam Engine Laplace transform of system input Engine Speed Flyball Sensor A system is assumed to be at rest. (Zero initial system condition) “Feedback” Pivot Setpoint “Input” 9 10 Models of electrical elements: (constitutive equations) Impulse response Suppose that u(t) is the unit impulse function Suppose and system is at rest. Resistance Inductance v(t) v(t) The output g(t) for the unit impulse input is called The impulse response. impulse Since U(s)=1, the transfer function can also be Since defined as the Laplace transform of impulse response: 11 i(t) i(t) i(t) i(t) i(t) i(t) System Capacitance R v(t) v(t) L v(t) v(t) C Laplace transform 12 Impedance Kirchhoff’s Voltage Law (KVL) Generalized resistance to a sinusoidal Generalized alternating current (AC) I(s) I(s) I(s) Z(s): V(s)=Z(s)I(s) Z(s Z(s) Z(s) Element Time domain The algebraic sum of voltage d...
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