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Self-Tuning Control based on Modified Equivalent-Dynamic-Linearization Mode

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Document pages: 8 pages

Abstract: The current model-free adaptive control (MFAC) method is designed on thebasis of the equivalent-dynamic-linearization model (EDLM) with neglect of thetime delay and disturbance in practical. By comparisons with the current worksabout MFAC, i) a class of self-tuning controller is proposed based a new EDLMmodified by the introduction of time delay and disturbance so as to reflect thereal system more objectively. Thereafter, we classify the proposed controllerinto four cases to enable easier applications; ii) the controller design andstability analysis of system are achievable by analyzing the function of theclosed-loop poles. In addition, the issue of how to choose the parameter lambda in current MFAC by quantity is firstly finished by the analysis ofzeros-poles placement and static error of system, whereas this can hardly berealized by the previous contraction mapping method; iii) the study on theproposed method is focused on linear model for easily mastering its workingbehavior; At last, two examples are used to demonstrate the effectiveness ofthe proposed method and to point out the deficiencies in the current MFACtheory.

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