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- 1 - Übung 6 Aufgabe 1 ([FrPE10] Aufg. 3.19) Finden Sie die ...

- 1 - Übung 6 Aufgabe 1 ([FrPE10] Aufg. 3.19) Finden Sie die ...

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Institut für Chemie und Bioingenieurwissenschaften Dr. Robert N. Grass<br />

Regelungstechnik FS 12<br />

<strong>Übung</strong> 6<br />

<strong><strong>Aufg</strong>abe</strong> 1 ([<strong>FrPE10</strong>] <strong>Aufg</strong>. <strong>3.19</strong>)<br />

<strong>Finden</strong> <strong>Sie</strong> <strong>die</strong> Übertragungsfunktionen folgender Diagramme:<br />

<strong><strong>Aufg</strong>abe</strong> 2 ([<strong>FrPE10</strong>] <strong>Aufg</strong>. 3.22)<br />

Verwenden <strong>Sie</strong> <strong>die</strong> Blockdiagrammalgebra, um für das System <strong>die</strong> Übertragungsfunktion von R(s)<br />

nach Y(s) zu bestimmen.<br />

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<strong><strong>Aufg</strong>abe</strong> 3 ([SeEM11] <strong>Aufg</strong>. 3.9)<br />

For each of the following functions X(s), what can you say about x(t) (0≤t≤∞) without solving for x(t)?<br />

In other words, what are x(0) and x(∞)? Is x(t) converging or diverging? Is x(t) smooth or oscillatory?<br />

a) X s <br />

b) X s <br />

6s2<br />

2 s9s20s4 10s<br />

16s 5<br />

c) X s 2<br />

s 9<br />

2<br />

3<br />

2 s6s10s2 <br />

<strong><strong>Aufg</strong>abe</strong> 4 ([SeEM11] <strong>Aufg</strong>. 3.11)<br />

Which solutions of the following equations will exhibit convergent behaviour? Which oscillatory<br />

behaviour?<br />

3<br />

2<br />

d x d x dx<br />

a) 2 2 x 3<br />

3<br />

2<br />

dt dt dt<br />

b)<br />

2<br />

d x<br />

x 2e<br />

2<br />

dt<br />

3<br />

d x<br />

c) x sin t<br />

3<br />

dt<br />

2<br />

d x dx<br />

d) 4<br />

2<br />

dt dt<br />

t<br />

Note: All of the differential equations above have one common factor in their characteristic equations.<br />

Literatur<br />

[<strong>FrPE10</strong>] G. F. Franklin, J. D. Powell, and A. Emami-Naeini. Feedback Control of Dynamic Systems.<br />

Prentice Hall, Upper Saddle River, 6th edition, 2010.<br />

[SeEM11] D. E. Seborg, T. F. Edgar, and D. A. Mellichamp. Process Dynamics and Control. John<br />

Wiley & Sons, New York, 2011.<br />

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