direct adaptive compensation control of mechanical systems with unknown actuator failures and dead-zone nonlinearities

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ID: 184111
2018
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Abstract
In this paper, a new tuning function backstepping control scheme is proposed for a class of parametric strict feedback nonlinear systems to accommodate actuator failures/faults and dead-zone constraints, where the failures/faults are uncertain in time, pattern, and values, and the dead-zone parameters are not available. Roughly speaking, such a scheme is developed in two steps below. First, by using an adaptive smooth inverse function to compensate for the dead-zone nonlinearity, we separate the coupling actuator dynamics into two parts, i.e., the dead-zone compensation errors and the nominal failure dynamics. Afterward, we further handle these two parts based on the techniques of robust adaptive approach and parametrization method. With our scheme, the global boundedness of the signals in the closed-loop system are ensured, and the tracking error is steered to zero asymptotically. These results have also been verified through simulation studies.
Reference Key
xiaohang2018matecdirect Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Su Xiaohang;Liu Zhi
Journal acta botânica brasílica
Year 2018
DOI
10.1051/matecconf/201816702006
URL
https://doi.org/10.1051/matecconf/201816702006
Keywords
engineering (general) civil engineering (general)

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