1 1 0 -1 0 -1 æ(t) + 0 u(t) ¿(t) : 1 = -1 1 v(t) = [ 0 0 1]=(t) a) Find the modes of the system. b) For each mode, determine whether or not that mode is (i) controllable; (ii) observable. Explain your answers. c) Determine whether or not the system is (i) stabilizable; (ii) detectable. Explain your answers.

Advanced Engineering Mathematics
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ISBN:9780470458365
Author:Erwin Kreyszig
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Chapter2: Second-order Linear Odes
Section: Chapter Questions
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2. Consider the system described by
1 0
0 -1
0 -1
1
i(t)
x(t) +
0 u(t)
1
-1
1
y(t) = [ 0 0 1]r(t)
0 0 1]r(1)
a) Find the modes of the system.
b) For each mode, determine whether or not that mode is (i) controllable; (ii) observable.
Explain your answers.
c) Determine whether or not the system is (i) stabilizable; (ii) detectable. Explain your answers.
d) Determine whether or not the system is (i) stable in the sense of Lyapunov; (ii) asymptotically
stable; (iii) globally asymptotically stable; (iv) bounded-input bounded-output stable; (v)
critically stable. Explain your answers.
e) Is it possible to asymptotically stabilize this system by using
(i) Static output feedback of the form u(t) = Ky(t), where K is a constant gain.
(ii) Dynamic output feedback of the form û(s) = C(s)ŷ(s), where C(s) is a proper and
rational transfer function.
(iii) State feedback of the form u(t) = K«(t), where K is a constant matrix.
(iv) Repeat part (i) for the case when the output equation is changed to:
v(t) = [ 1 0 0]¤(t)
In each case, if your answer is positive, design such a controller; if your answer is negative,
explain the reason.
Transcribed Image Text:2. Consider the system described by 1 0 0 -1 0 -1 1 i(t) x(t) + 0 u(t) 1 -1 1 y(t) = [ 0 0 1]r(t) 0 0 1]r(1) a) Find the modes of the system. b) For each mode, determine whether or not that mode is (i) controllable; (ii) observable. Explain your answers. c) Determine whether or not the system is (i) stabilizable; (ii) detectable. Explain your answers. d) Determine whether or not the system is (i) stable in the sense of Lyapunov; (ii) asymptotically stable; (iii) globally asymptotically stable; (iv) bounded-input bounded-output stable; (v) critically stable. Explain your answers. e) Is it possible to asymptotically stabilize this system by using (i) Static output feedback of the form u(t) = Ky(t), where K is a constant gain. (ii) Dynamic output feedback of the form û(s) = C(s)ŷ(s), where C(s) is a proper and rational transfer function. (iii) State feedback of the form u(t) = K«(t), where K is a constant matrix. (iv) Repeat part (i) for the case when the output equation is changed to: v(t) = [ 1 0 0]¤(t) In each case, if your answer is positive, design such a controller; if your answer is negative, explain the reason.
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