Lect2 - Lecture 2 Lecture 2 OpenLoop vs Feedback(Ch1...

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Lecture 2: Open Loop vs. Feedback (Ch1) Response of Dynamic Systems (Ch2) AE 353, Spring 2010 Prof. Soon Jo Chung Prof. Soon Jo Chung ([email protected])
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What is Feedback Control? Control is the process of making a system variable adhere to a particular value (Reference Value Reference Trajectory) (Reference Value, Reference Trajectory). Tracking control: following a time varying reference signal Regulating control: maintain an output fixed dl f h di b regardless of the disturbances present.
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Why Feedback Control? Robust to Uncertain Plant Dynamics Robust to External Disturbances S bili bl S Stabilize Unstable System Better Performance! Chapter 1 and Chapter 4 discuss these in detail
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Automatic Cruise Control input output Disturbance
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1.2 Illustrative Example: Automatic Cruise Control f Disturbance road grade Input Filter Controll er Actuator Engine Process Auto body + reference: r desired speed output: y actual speed Plant throttle Sensor speedometer Sensor Noise
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