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      Control of uncertain sampled-data systems: An Adaptive posicast control approach

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      Author(s)
      Abidi K.
      Yildiz, Y.
      Annaswamy A.
      Date
      2017
      Source Title
      IEEE Transactions on Automatic Control
      Print ISSN
      0018-9286
      Electronic ISSN
      1558-2523
      Publisher
      Institute of Electrical and Electronics Engineers Inc.
      Volume
      62
      Issue
      5
      Pages
      2597 - 2602
      Language
      English
      Type
      Article
      Item Usage Stats
      208
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      210
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      Abstract
      This technical note proposes a discrete-time adaptive controller for the control of sampled-data systems. The design is inspired from the Adaptive Posicast Controller (APC) which was designed for time-delay systems in continuous time. Due to the performance degradation caused by digital approximation of continuous laws, together with the problem of assuming time-delays as integer multiples of sampling intervals, the benefits of APC could not be fully realized. In this technical note, these approximations/assumptions are eliminated. In addition, a disturbance observer is incorporated into the controller design which minimizes the effect of disturbances on the system. Extension to the case of uncertain input time-delay is also presented. The proposed approach is verified in simulation studies. © 1963-2012 IEEE.
      Keywords
      Adaptive control
      Delay systems
      Digital control
      Uncertain systems
      Permalink
      http://hdl.handle.net/11693/37111
      Published Version (Please cite this version)
      http://dx.doi.org/10.1109/TAC.2016.2600627
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