User`s guide

ix
8
The Root Locus Design GUI
Introduction .......................................... 8-2
A Servomechanism Example ........................... 8-4
Controller Design Using the Root Locus Design GUI ..... 8-6
OpeningtheRootLocusDesignGUI ..................... 8-6
ImportingModelsintotheRootLocusDesignGUI.......... 8-7
OpeningtheImportLTIDesignModelWindow .......... 8-9
ChoosingaFeedbackStructure ...................... 8-10
SpecifyingtheDesignModel......................... 8-11
ChangingtheGainSetPointandZooming ............... 8-13
Dragging Closed-loop Poles to Change the Gain Set Point . 8-14
Zooming ......................................... 8-15
StoringandRetrievingAxesLimits ................... 8-19
DisplayingSystemResponses.......................... 8-20
DesigningaCompensatortoMeetSpecifications .......... 8-22
Specifying Design Region Boundaries on the Root Locus . . 8-24
Placing Compensator Poles and Zeros:
GeneralInformation..............................
8-26
Placing Compensator Poles and Zeros
UsingtheRootLocusToolbar ......................
8-27
Editing Compensator Pole and Zero Locations . . . . . . . . . . 8-31
SavingtheCompensatorandModels .................... 8-36
Additional Root Locus Design G UI Features ............ 8-38
SpecifyingDesignModels:GeneralConcepts.............. 8-38
CreatingModelsManuallyWithintheGUI............. 8-38
DesignatingtheModelSource ....................... 8-39
GettingHelpwiththeRootLocusDesignGUI ............ 8-39
UsingtheHelpMenu .............................. 8-40
UsingtheStatusBarforHelp ....................... 8-40
Tooltips.......................................... 8-40
ErasingCompensatorPolesandZeros ................... 8-41
ListingPolesandZeros ............................... 8-41
PrintingtheRootLocus............................... 8-44
DrawingaSimulinkDiagram.......................... 8-44
Converting Between Continuous and Discrete Models . . . . . . 8-45