Loading...
Please wait, while we are loading the content...
Handling qualities of model reference adaptive controllers with varying complexity for pitch-roll coupled failures
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Hanson, Curt Schaefer, Jacob Johnson, Marcus A. Nguyen, Nhan |
| Copyright Year | 2011 |
| Description | Three model reference adaptive controllers (MRAC) with varying levels of complexity were evaluated on a high performance jet aircraft and compared along with a baseline nonlinear dynamic inversion controller. The handling qualities and performance of the controllers were examined during failure conditions that induce coupling between the pitch and roll axes. Results from flight tests showed with a roll to pitch input coupling failure, the handling qualities went from Level 2 with the baseline controller to Level 1 with the most complex MRAC tested. A failure scenario with the left stabilator frozen also showed improvement with the MRAC. Improvement in performance and handling qualities was generally seen as complexity was incrementally added; however, added complexity usually corresponds to increased verification and validation effort required for certification. The tradeoff between complexity and performance is thus important to a controls system designer when implementing an adaptive controller on an aircraft. This paper investigates this relation through flight testing of several controllers of vary complexity. |
| File Size | 3018598 |
| Page Count | 42 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20110015953 |
| Archival Resource Key | ark:/13960/t80k7c744 |
| Language | English |
| Publisher Date | 2011-08-08 |
| Access Restriction | Open |
| Subject Keyword | Aircraft Stability And Control Flight Tests Control Systems Design Tradeoffs Inversions Roll Fighter Aircraft Adaptive Control Failure Pitch Inclination Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
