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Flight Testing a Linear Parameter Varying Control Law on a Passenger Aircraft

Weiser, Christian and Ossmann, Daniel and Kuchar, Richard and Müller, Reiko and Milz, Daniel and Looye, Gertjan (2020) Flight Testing a Linear Parameter Varying Control Law on a Passenger Aircraft. In: AIAA SciTech Forum, 2020. AIAA Scitech Forum 2020, 06.-10. Jan. 2020, Orlando, USA. doi: 10.2514/6.2020-1618.

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To improve performance and efficiency of future aircraft generations, multi-objective control design problems considering effects such as over-actuation and lowly damped flexible modes arise from new materials in the wing design. A candidate method, which delivers a solution to this problem for the whole flight envelope is linear parameter varying (LPV) control synthesis. It already incorporates the controller scheduling in the synthesis process, guaranteeing stability and robustness over the entire scheduling envelope, and enables intuitive multi-objective, multiple-input multiple-output (MIMO) controller designs. To prove the concept of LPV controllers in a realistic environment, the flight test campaign results of LPV inner loop control laws on a Cessna Citation II (550) aircraft are presented in this paper. The implemented inner loop controllers are inspired by classical flight controllers used on state-of-the-art fly-by-wire airliners. The longitudinal motion is augmented with load-factor command and the lateral motion controller, which is inherently of MIMO type, features a roll rate command with attitude hold behavior. The control laws are validated in flight by the pilot with respect to functionality, flying and handling qualities. Furthermore, auto generated input signals are used to excite the aircraft without pilot in the loop to allow for a comparability with simulation results.

Item URL in elib:https://elib.dlr.de/134004/
Document Type:Conference or Workshop Item (Speech)
Title:Flight Testing a Linear Parameter Varying Control Law on a Passenger Aircraft
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Weiser, ChristianChristian.Weiser (at) dlr.dehttps://orcid.org/0000-0002-2968-6961
Kuchar, RichardRichard.Kuchar (at) dlr.deUNSPECIFIED
Müller, ReikoReiko.Mueller (at) dlr.deUNSPECIFIED
Milz, DanielDaniel.Milz (at) dlr.deUNSPECIFIED
Looye, GertjanGertjan.Looye (at) dlr.deUNSPECIFIED
Date:January 2020
Journal or Publication Title:AIAA SciTech Forum, 2020
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
DOI :10.2514/6.2020-1618
Keywords:LPV, Robust Control, Flight Test
Event Title:AIAA Scitech Forum 2020
Event Location:Orlando, USA
Event Type:international Conference
Event Dates:06.-10. Jan. 2020
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Systems and Cabin (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of System Dynamics and Control > Aircraft System Dynamics
Deposited By: Weiser, Christian
Deposited On:26 Feb 2020 11:47
Last Modified:01 Dec 2020 18:56

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