User`s guide

9 Design Case Studies
9-6
Supposeyou wantto designa compensatorthatincreasesthe dampingof these
poles, so tha t the resulting complex poles have a damping ratio with
natural frequency rad/sec. You can do this using the Control System
toolbox analysis tools.
Open-Loop Analysis
First perform so me open-loop analysis to deter mine possible control strategies.
Startwiththetimeresponse(youcoulduse
step or impulse here).
impulse(sys)
Theimpulse responseconfirms thatthe system islightly damped. But thetime
frame i s much too long because t he passengers and the pilot are more
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