Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: An Output Feedback Stabilizer for MIMO Nonlinear Systems with Uncertain
  Input Gain: Nonlinear Nominal Model   This paper deals with the output feedback stabilization problem of nonlinear
multi-input multi-output systems having an uncertain input gain matrix. It is
assumed that the system has a well-defined vector relative degree and that the
zero dynamics is input-to-state stable. Based on the assumption that there
exists a state feedback controller which globally asymptotically stabilizes the
origin of the nominal closed-loop system, we present an output feedback
stabilizer which recovers the stability of the nominal closed-loop system in
the semi-global practical sense. Compared to previous results, we allow that
the nominal system can have a nonlinear input gain matrix that is a function of
state and this is done by modifying the structure of the disturbance
observer-based robust output feedback controller. It is expected that the
proposed controller can be well applied to the case when the system's
nonlinearity is to be exploited rather than canceled.

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The categories of this paper are: solv-int
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The categories of this paper are: chao-dyn
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The categories of this paper are: econ
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The categories of this paper are: stat
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The categories of this paper are: patt-sol
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The categories of this paper are: chem-ph
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The categories of this paper are: mtrl-th
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The categories of this paper are: cmp-lg
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The categories of this paper are: hep-ex
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The categories of this paper are: q-fin
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The categories of this paper are: alg-geom
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The categories of this paper are: hep-lat
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The categories of this paper are: atom-ph
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The categories of this paper are: adap-org
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The categories of this paper are: math-ph
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The categories of this paper are: hep-th