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Unformatted text preview: Lecture S13 Muddiest Points General Comments In todays lecture, we began considering circuits with sources. We saw that the statespace equations for such a system generally have the form x = Ax + Bu (32) This is the state equation . In Lecture S14, we will look at the measurement equation, which will complete the description of the relationship between input and output. Responses to MuddiestPartoftheLecture Cards (46 cards) 1. General confusion about the last PRS question. (5 students) I will try to post a discussion. Im running behind updating the PRS questions. 2. For the PRS question, I got different signs than in your solution. I got ( u ( t ) v 1 ( t )) dv 1 R C dt + i 2 = 0 (33) (1) I think that the only term you got wrong is the capacitor current. You drew it as up it should be down, since the + sign is on top. 3. Given the eigenvalues, I can find eigenvectors. How do I find the eigenvalues? (1) Please see the reading assignment. The short answer is to solve det( sI A ) = 0 (34) 4. When dealing with states, can you just focus on the states and ignore everything else in between. . . ? (1) Not sure what you mean. The notes have a stepbystep procedure which you can follow. 5. Can you go over specific differences in calculating information about a capacitor vs. and inductor? (1) The question is vague enough that Im not sure that I...
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 Fall '05
 MarkDrela

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