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## PowerPoint Slideshow about ' Control Theory' - waylon

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### ControlTheory

Session6 – Transfer Functions

Standard form of first order TF

We willconsider changes

with respect to a giveninitial

equilibrium

Step response:

Second order processes

Typicalexample: mass-spring-damper

z(t)

u(t)

(set-up in a horizontal plane, spring in rest positionwhen x=0, initialvelocity v=0: equilibrium!)

Step respones of 2nd order processes

>1: Overdamped

=1: Critically damped = fastest without oscillations

<1: Underdamped: Oscillations!

+

Group Task 2

m=1 [kg]

k=1 [N/m]

Can we nowadd a P controller and calculate the

transfer function of the closed loop?

(by the way, what’s the transfer function of a P controller?)

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