www.gusucode.com > control 案例程序 matlab源码代码 > control/SpecifyDisturbanceResponseCharacteristicsExample.m
%% Specify First-Order or Second-Order Step Disturbance Response Characteristics % Create a requirement that specifies the step disturbance response in % terms of peak time-domain response, settling time, and damping of % oscillations. %% % Suppose you want the response at |'y'| to a disturbance injected at |'d'| % to never exceed an absolute value of 0.25, and to settle within 5 % seconds. Create a |TuningGoal.StepRejection| requirement that captures % these specifications and also specifies non-oscillatory response. Req1 = TuningGoal.StepRejection('d','y',0.25,5); %% % Omitting an explicit value for the damping ratio, |zeta|, is equivalent % to setting |zeta| = 1. Therefore, |Req| specifies a non-oscillatory % response. The software converts the peak value and settling time into a reference % transfer function whose step response has the desired time-domain profile. % This transfer function is stored in the |ReferenceModel| property of % |Req|. Req1.ReferenceModel %% % Confirm the target response by displaying |Req|. figure() viewSpec(Req1) %% % Suppose your application can tolerate oscillations provided the damping % ratio is less than 0.4. Create a requirement that specifies this % disturbance response. Req2 = TuningGoal.StepRejection('d','y',0.25,5,0.4); figure() viewSpec(Req2)