Seite - (000052) - in Control Theory Tutorial - Basic Concepts Illustrated by Software Examples

44 DesignTradeoffs Stabilizationconcernsaspectsofdesignthatprotectagainst instability.Anunsta- ble systemmay lead to failureordeath.Often, theprimarydesigngoal is toprotect against instability. Tracking concerns how well the system follows changes in environmental or reference input signals.A system that rapidly adjusts to changesmay track closely to reference inputsbutmaysuffer fromsensitivity toperturbationsor instability. Thenext sectionsbriefly illustrate theseconcepts. I usemodifiedexamples from theexcellent articlebyQiuandZhou(2013).