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Autopilot design for an aircraft by using Luenberger observer design.

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Title: Autopilot design for an aircraft by using Luenberger observer design.
Authors: Taimoor, Muhammad1 muhtaimoor123@hotmail.com, Aijun, Li1 liaijun@nwpu.edu.cn, Amin, Rooh ul1 rooh@mail.nwpu.edu.cn, Lu, Hongshi1 luhs@mail.nwpu.edu.cn
Source: Aircraft Engineering & Aerospace Technology. 2018, Vol. 90 Issue 5, p858-868. 11p.
Subjects: Automatic pilot (Airplanes), Airplane design, Aerodynamics, Flight testing of airplanes, Flight control systems
Abstract: Purpose The purpose of this paper is to design linear quadratic regulator (LQR) based Luenberger observer for the estimation of unknown states of aircraft.Design/methodology/approach In this paper, the LQR-based Luenberger observer is deliberated for autonomous level flight of unmanned aerial vehicle (UAV) which has been attained productively. Various modes like phugoid and roll modes are exploited for controlling the rates of UAV. The Luenberger observer is exploited for estimation of the mysterious states of the system. The rates of roll, yaw and pitch are used as an input to the observer, while the remaining states such as velocities and angles have been anticipated. The main advantage of using Luenberger observer was to reduce the cost of the system which has been achieved lucratively. The Luenberger observer proposes sturdiness at the rate of completion to conquest over the turmoil and insecurities to overcome the privileged recital. The FlightGear simulator is exploited for the endorsement of the recital of the Luenberger observer-based autopilot. The level flight has been subjugated lucratively and has been legitimated by exploiting the FlightGear simulator. The authenticated and the validated results are offered in this paper. Microsoft Visual Studio has been engaged as a medium between the MATLAB and FlightGear Simulator.Findings The suggested observer based on LQR ensures the lucrative approximation of the unknown states of the system as well as the successful level flight of the system. The Luenberger observer is used for approximation of states while LQR is used as controller.Originality/value In this research work, not only the estimation of unknown states of both longitudinal and lateral model is made but also the level flight is achieved by using those estimated states and the autopilot is validated by using the FlightGear, while in most of the research work only the estimation is made of only longitudinal or lateral model. [ABSTRACT FROM AUTHOR]
Copyright of Aircraft Engineering & Aerospace Technology is the property of Emerald Publishing Limited and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
An: 132400852
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
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  Data: Autopilot design for an aircraft by using Luenberger observer design.
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  Data: <searchLink fieldCode="AR" term="%22Taimoor%2C+Muhammad%22">Taimoor, Muhammad</searchLink><relatesTo>1</relatesTo><i> muhtaimoor123@hotmail.com</i><br /><searchLink fieldCode="AR" term="%22Aijun%2C+Li%22">Aijun, Li</searchLink><relatesTo>1</relatesTo><i> liaijun@nwpu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Amin%2C+Rooh+ul%22">Amin, Rooh ul</searchLink><relatesTo>1</relatesTo><i> rooh@mail.nwpu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Lu%2C+Hongshi%22">Lu, Hongshi</searchLink><relatesTo>1</relatesTo><i> luhs@mail.nwpu.edu.cn</i>
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  Data: <searchLink fieldCode="JN" term="%22Aircraft+Engineering+%26+Aerospace+Technology%22">Aircraft Engineering & Aerospace Technology</searchLink>. 2018, Vol. 90 Issue 5, p858-868. 11p.
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  Data: <searchLink fieldCode="DE" term="%22Automatic+pilot+%28Airplanes%29%22">Automatic pilot (Airplanes)</searchLink><br /><searchLink fieldCode="DE" term="%22Airplane+design%22">Airplane design</searchLink><br /><searchLink fieldCode="DE" term="%22Aerodynamics%22">Aerodynamics</searchLink><br /><searchLink fieldCode="DE" term="%22Flight+testing+of+airplanes%22">Flight testing of airplanes</searchLink><br /><searchLink fieldCode="DE" term="%22Flight+control+systems%22">Flight control systems</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Purpose The purpose of this paper is to design linear quadratic regulator (LQR) based Luenberger observer for the estimation of unknown states of aircraft.Design/methodology/approach In this paper, the LQR-based Luenberger observer is deliberated for autonomous level flight of unmanned aerial vehicle (UAV) which has been attained productively. Various modes like phugoid and roll modes are exploited for controlling the rates of UAV. The Luenberger observer is exploited for estimation of the mysterious states of the system. The rates of roll, yaw and pitch are used as an input to the observer, while the remaining states such as velocities and angles have been anticipated. The main advantage of using Luenberger observer was to reduce the cost of the system which has been achieved lucratively. The Luenberger observer proposes sturdiness at the rate of completion to conquest over the turmoil and insecurities to overcome the privileged recital. The FlightGear simulator is exploited for the endorsement of the recital of the Luenberger observer-based autopilot. The level flight has been subjugated lucratively and has been legitimated by exploiting the FlightGear simulator. The authenticated and the validated results are offered in this paper. Microsoft Visual Studio has been engaged as a medium between the MATLAB and FlightGear Simulator.Findings The suggested observer based on LQR ensures the lucrative approximation of the unknown states of the system as well as the successful level flight of the system. The Luenberger observer is used for approximation of states while LQR is used as controller.Originality/value In this research work, not only the estimation of unknown states of both longitudinal and lateral model is made but also the level flight is achieved by using those estimated states and the autopilot is validated by using the FlightGear, while in most of the research work only the estimation is made of only longitudinal or lateral model. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Aircraft Engineering & Aerospace Technology is the property of Emerald Publishing Limited and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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      – Type: doi
        Value: 10.1108/AEAT-11-2016-0224
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      – Code: eng
        Text: English
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      Pagination:
        PageCount: 11
        StartPage: 858
    Subjects:
      – SubjectFull: Automatic pilot (Airplanes)
        Type: general
      – SubjectFull: Airplane design
        Type: general
      – SubjectFull: Aerodynamics
        Type: general
      – SubjectFull: Flight testing of airplanes
        Type: general
      – SubjectFull: Flight control systems
        Type: general
    Titles:
      – TitleFull: Autopilot design for an aircraft by using Luenberger observer design.
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          Name:
            NameFull: Taimoor, Muhammad
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            NameFull: Aijun, Li
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            NameFull: Amin, Rooh ul
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            NameFull: Lu, Hongshi
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            – D: 01
              M: 09
              Text: 2018
              Type: published
              Y: 2018
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            – TitleFull: Aircraft Engineering & Aerospace Technology
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