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An experimental evaluation of generalized predictive control for tiltrotor aeroelastic stability augmentation in airplane mode of flight
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Langston, Chester W. Kvaternik, Raymond G. Bennett, Richard L. Piatak, David J. Singleton, Jeffrey D. Brown, Ross K. Nixon, Mark W. |
| Copyright Year | 2001 |
| Description | The results of a joint NASA/Army/Bell Helicopter Textron wind-tunnel test to assess the potential of Generalized Predictive Control (GPC) for actively controlling the swashplate of tiltrotor aircraft to enhance aeroelastic stability in the airplane mode of flight are presented. GPC is an adaptive time-domain predictive control method that uses a linear difference equation to describe the input-output relationship of the system and to design the controller. The test was conducted in the Langley Transonic Dynamics Tunnel using an unpowered 1/5-scale semispan aeroelastic model of the V-22 that was modified to incorporate a GPC-based multi-input multi-output control algorithm to individually control each of the three swashplate actuators. Wing responses were used for feedback. The GPC-based control system was highly effective in increasing the stability of the critical wing mode for all of the conditions tested, without measurable degradation of the damping in the other modes. The algorithm was also robust with respect to its performance in adjusting to rapid changes in both the rotor speed and the tunnel airspeed. |
| File Size | 1220341 |
| Page Count | 15 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20010059025 |
| Archival Resource Key | ark:/13960/t5p89793x |
| Language | English |
| Publisher Date | 2001-01-01 |
| Access Restriction | Open |
| Subject Keyword | Aircraft Stability And Control Degradation Tilt Rotor Aircraft Helicopters Predictions Wind Tunnel Tests Stability Augmentation Time Domain Analysis Rotor Speed Control Stability Aeroelasticity Adaptive Control Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
