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Unformatted text preview: + MASSACHUSETTS INSTITUTE OF TECHNOLOGY Department of Aeronautics and Astronautics 16.060: Principles of Automatic Control Fall 2003 PROBLEM SET 1 Due: Thursday 9/11/2003 Reminder: The MATLAB/Simulink tutorials will take place on Monday (9/8) at 7pm and 8pm, and Tuesday (9/9) at 7pm Each session will last about one hour. Problem 1: Why Feedback Pick an example of a closed-loop system that you are familiar with (e.g. temperature control system in an oﬃce, cruise control in a car). Draw a simple block diagram of that system, similar to the one shown in Figure 1. For the system you choose, specify the physical input, the physical output, and a possible source of disturbance and noise. Also write down the physical devices that constitute the “controller”, the “plant”, and the “sensor”, but don’t worry about writing any transfer functions! Discuss brieﬂy (in one paragraph) how effective or ineffective the control system would be without feedback....
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