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Dynamic scaling based adaptive controllers for aeroelastic systems

This paper formulates a new dynamic scaling based adaptive control design for a class of mth-order cascade integrator systems. In order to circumvent the integrability obstacle, often inherent to the Immersion and Invariance (I&I) scheme, a scaled off-the-manifold coordinate is introduced. This...

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Bibliographic Details
Main Authors: Sungpil Yang, Hashemi, Kelley E., Akella, Maruthi R.
Format: Conference Proceeding
Language:English
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Summary:This paper formulates a new dynamic scaling based adaptive control design for a class of mth-order cascade integrator systems. In order to circumvent the integrability obstacle, often inherent to the Immersion and Invariance (I&I) scheme, a scaled off-the-manifold coordinate is introduced. This scalar factor is designed such that its dynamics are driven by the system states and known reference signals. Then, controllers with and without state filters are proposed such that the states track predefined reference trajectories and the scaling factor is both bounded and nonzero for all time. The proposed method has a simple closed-loop structure and requires a lower-order dynamic extension than other existing methods. An important feature is that the dynamic gain no longer monotonically increases but instead converges, often in the vicinity of the initial value. Numerical simulations are carried out to demonstrate the performance of the proposed controller using a model of an aircraft wing's aeroelastic behavior.
ISSN:2378-5861
DOI:10.1109/ACC.2016.7525000