Title:
AIRCRAFT CONTROL DEVICE, AIRCRAFT, AND METHOD FOR COMPUTING AIRCRAFT TRAJECTORY
Document Type and Number:
WIPO Patent Application WO/2017/014085
Kind Code:
A1
Abstract:
In the present invention, an aircraft control device computes the trajectories of a plurality of formation-flying aircraft using a calculation method; e.g., direct collocation with nonlinear programming (DCNLP), in which the optimal solution is obtained by discretizing continuous variables. Trajectory-indicating nodes are computed and set by plugging discretized aircraft control variables into an aircraft motion equation or by using another method. Using discretization to address aircraft trajectories reduces complexity and allows the trajectories to computed more rapidly than with computations involving chronologically contiguous aircraft trajectories. The aircraft control device determines the optimal trajectory, among trajectories that comply with constraints corresponding to the role of the aircraft, on the basis of an assessment value obtained by an objective function corresponding with the role. Accordingly, the aircraft control device is capable of performing computations more rapidly on more suitable trajectories corresponding with the role of the aircraft.
Inventors:
YAMASAKI KOICHI (JP)
Application Number:
PCT/JP2016/070413
Publication Date:
January 26, 2017
Filing Date:
July 11, 2016
Export Citation:
Assignee:
MITSUBISHI HEAVY IND LTD (JP)
International Classes:
F41H13/00; B64C19/02; G08G5/00
Domestic Patent References:
| WO2014083993A1 | 2014-06-05 |
Foreign References:
| JP2004025966A | 2004-01-29 |
Other References:
YOKOYAMA, NOBUHIRO ET AL.: "Decentralized Flight Trajectory Planning of Multiple Aircraft", PROCEEDINGS OF LECTURES AND WORKSHOP INTERNATIONAL -RECENT ADVANCES IN MULTIDISCIPLINARY TECHNOLOGY AND MODELING-, JAPAN AEROSPACE EXPLORATION AGENCY, February 2008 (2008-02-01), pages 88 - 97, XP055349005
GEIGER, BRIAN: "Unmanned Aerial Vehicle Trajectory Planning with Direct Methods", THE PENNSYLVANIA STATE UNIVERSITY, August 2009 (2009-08-01), pages 13 - 17, XP055408517
RAIVIO, T. ET AL.: "Aircraft Trajectory Optimization using Nonlinear Programming", SYSTEM MODELLING OPTIMIZATION, 1996, pages 435 - 441, XP055349007
See also references of EP 3255371A4
GEIGER, BRIAN: "Unmanned Aerial Vehicle Trajectory Planning with Direct Methods", THE PENNSYLVANIA STATE UNIVERSITY, August 2009 (2009-08-01), pages 13 - 17, XP055408517
RAIVIO, T. ET AL.: "Aircraft Trajectory Optimization using Nonlinear Programming", SYSTEM MODELLING OPTIMIZATION, 1996, pages 435 - 441, XP055349007
See also references of EP 3255371A4
Attorney, Agent or Firm:
FUJITA, Takaharu (JP)
Download PDF: