美国麻省理工大学：《航空系统的估计与控制》教学资源（讲义，英文版）Handout 5：Control System Design Principles.pdf_大学文库

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Handout 5: Control System Design Principles Eric Feron Feb20,2004 The standard feedback loop Draw the feedback loop here Tracking requirements:

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Handout 5: Control System Design Principles Eric feron Feb20.2004 The standard feedback loop Draw the feedback loop here Tracking rec

Handout 5: Control System Design Principles Eric Feron The standard feedback loop Draw the feedback loop here Tracking requirements: 1 Feb 20, 2004

Unmodelled dynamics: Gtrue(s=(1+L(s)Gnom(s) Show typical Bode diagram here Insensitivity to unmodelled dynamics requires Fundamental equality that requires trade between tracking and 2

Unmodelled dynamics: Gtrue(s) = (1 + L(s))Gnom(s) Show typical Bode diagram here Insensitivity to unmodelled dynamics requires: Fundamental equality that requires trade between tracking and insensitivity | + | = 1 2

Desirable Bode Plot for loop gain 3

What happens at crossover frequency? (KG 1)?

What happens at crossover frequency? (|KG| 1)? 4

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