Nonlinear phase shift compensator for pilot-induced oscillations prevention

Boris Andrievsky, Nikolay Kuznetsov, Olga Kuznetsova, Gennady Leonov, Svetlana Seledzhi

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

7 Scopus citations

Abstract

The pilot-induced oscillation (PIO) is denoted as unintended steady fluctuation of the piloted aircraft, generated due to the efforts of the pilot to control the aircraft. The main non-linear factor leading to the PIO is, generally, rate limitations of the aircraft control surfaces, resulting in a delay in the response of the aircraft to pilot commands. Due to the tight relationship between magnitude and phase frequency responses for linear systems, applicability of the linear compensator for mentioned aim is highly restricted. This leads to the idea of employing the nonlinear phase shift compensator. In the control theoretic literature, various nonlinear corrective devices (NCD) are elaborated, which make it possible to change the phase-frequency and amplitude-frequency responses independently on each other. In the paper, a novel phase shift compensator based on nonlinear correction technique is presented and numerical comparative study for two models of a pilot for PIO prevention during the flight is given. The results obtained demonstrate that the proposed method in several times increases the admissible gain of the 'airplane-pilot' loop as compared with non-corrected system.

Original languageEnglish
Title of host publicationProceedings - EMS 2015
Subtitle of host publicationUKSim-AMSS 9th IEEE European Modelling Symposium on Computer Modelling and Simulation
EditorsGregorio Romero, Alessandra Orsoni, David Al-Dabass, Athanasios Pantelous
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages225-231
Number of pages7
ISBN (Electronic)9781509002061
DOIs
StatePublished - 29 Sep 2016
Event9th UKSim-AMSS IEEE European Modelling Symposium on Computer Modelling and Simulation, EMS 2015 - Madrid, Spain
Duration: 6 Oct 20158 Oct 2016

Publication series

NameProceedings - EMS 2015: UKSim-AMSS 9th IEEE European Modelling Symposium on Computer Modelling and Simulation

Conference

Conference9th UKSim-AMSS IEEE European Modelling Symposium on Computer Modelling and Simulation, EMS 2015
CountrySpain
CityMadrid
Period6/10/158/10/16

Scopus subject areas

  • Computer Science Applications
  • Control and Optimization
  • Modelling and Simulation

Keywords

  • Actuator modeling
  • Compensator
  • Nonlinear
  • Oscillations
  • Phase shift
  • Pilot-aircraft model
  • Rate limitations

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