final04 - ECE 147A FEEDBACK CONTROL SYSTEMS - THEORY AND...

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Unformatted text preview: ECE 147A FEEDBACK CONTROL SYSTEMS - THEORY AND DESIGN F04 Final Exam Closed book and notes. No calculators. Show all work. Name: Problem 1: /20 Problem 2: /20 Problem 3: /20 Problem 4: /20 Problem 5: /20 Total: /100 Miscellaneous: tan- 1 (1 / 3) 18 degrees, tan- 1 (1) = 45 degrees. tan- 1 (2) 63 degrees, tan- 1 (5) 78 degrees, tan- 1 (10) 84 degrees, tan- 1 (20) 87 degrees, sin(45 ) = 2 / 2 . 7, sin(50 ) . 77, sin(55 ) . 82, sin(60 ) = 3 / 2 . 87. Name: Problem 1 1. For the unity negative feedback configuration, describe the three properties that typically characterize a good choice for the function 7 | C ( ) P ( ) | and explain why these three properties are important. 2. What are the typical motivations for using a pole at the origin in a feedback controller? 3. The loop gain for a given unity negative feedback system is shown as the solid curve in the figure below. (The dashed curve is a circle of radius one.) (a) Label on the plot the crossover frequency of the open-loop. (b) Estimate the phase margin....
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final04 - ECE 147A FEEDBACK CONTROL SYSTEMS - THEORY AND...

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