Assignment 8-Questions

Assignment 8-Questions - ECE3085 - Homework #7 Due: Mar....

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ECE3085 - Homework #7 Due: Mar. 26, 2009 Problem 1. (10 pts) Consider the simplified version of a satellite orientation control system whose closed-loop system as is Figure 1(a), where P ( s ) = 1 Js 2 C ( s ) = K (1 + s T ) . where T = 3 sec and K/J = 2 / 3 . (a) What is the damping coefficient ζ ? (b) What is the % overshoot and the 5% settling time? Problem 2. (10 pts) A DC-motor speed losed-loop system is given by the following plant ˙ Ω + 60Ω = 600 V a - 1500 T L , and feedback control law is V a = - K p Ω + 1 T i t Ω d τ P , where Ω is the motor speed, V a is the armature voltage (the input), and T L is the load torque. The parameters K and T are control parameters/gains. (a) Draw the equivalent closed-loop block diagram for this system. Which of the two from Figure 1 does it resem- ble? (b) Find the closed-loop transfer function of T L to Ω . (c) What should
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Assignment 8-Questions - ECE3085 - Homework #7 Due: Mar....

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