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conicity    

compute the conicity stabity criterium

Syntax

Description

conicity(plant,range,params,controller) coputes the conicity stability criterium for the plant plant in the range specified by the array range with the static controller controller.

Remarks

This method is applicable only if the plant system is has single takagi sugeno mapping for all the outputs or it is a linear one. In addition the controller must be a static one. The outputs of the function are: CONICITY INDEX = CONIC DESVIATION / CONIC ROBUSTNESS CONIC DEVIATION = GAIN(CONTROLLER - CENTRE) CONIC ROBUSTNESS = 1 / GAIN(FEEDB((A,B,C,D),CENTRE) where centre is the center of the cone which is calculated with the method specified in the field search_method of the params structure. Possible values for this field are: if no search_method is specified the linearization techique is used.

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