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An observer for a velocity-sensorless VTOL aircraft with time-varying measurement delay

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  • Qing He
  • Jinkun Liu

Abstract

This paper presents a kind of state observer for a velocity-sensorless vertical take-off and landing (VTOL) aircraft with bounded time-varying delay in its measurement outputs. The proposed observer predicts current state variables based on the delayed outputs, and the estimated state variables can be considered as the actual state variables for feedback control scheme design. Since the delay is time-varying, compared to the constant delay case, different analysis theory must be employed. Under the assumption that the delays are identical for different outputs and bounded input, the asymptotic convergence property of the estimation error based on Lyapunov–Razumikhin theorem is proved. A relative large time delay for the VTOL aircraft in the outputs has been tested in the numerical simulation, and the simulation results show the effectiveness of the proposed observer.

Suggested Citation

  • Qing He & Jinkun Liu, 2016. "An observer for a velocity-sensorless VTOL aircraft with time-varying measurement delay," International Journal of Systems Science, Taylor & Francis Journals, vol. 47(3), pages 652-661, February.
    • Handle: RePEc:taf:tsysxx:v:47:y:2016:i:3:p:652-661
    DOI: 10.1080/00207721.2014.900135
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