Presented By: Aerospace Engineering
AE Dissertation Defense: Modeling, Simulation, and Control of Very Flexible Aircraft
Zi Yang Pang (PhD Candidate) Professor Carlos E. S. Cesnik (chair)
Zi Yang Pang
PhD Candidate
Aerospace Engineering
This dissertation presents research on modeling, simulation, and control of very flexible aircraft (VFA). This work includes theoretical and numerical developments, as well as experimental validations.
On the theoretical front, aero elastic equations of motions are derived to model a VFA as well as sensor measurements. Two state estimation and reconstruction algorithms are explored, extracting structural deformation from noisy measurements.
Next, model predictive control (MPC) is applied to maneuver load alleviation of a representative VFA. Numerical studies are performed and MPC demonstrates both control and state constraints are successfully enforced.
On the experimental front, two aero elastic testbed vehicles (ATV-6B and RRV-6B) are constructed. On ATV-6B, an extensive set of sensors measuring structural, flight dynamic, and aerodynamic information is integrated on-board. A new stereo-vision measurement system mounted on the body center tracks high brightness LEDs markers embedded on the wing surface.
Finally, flight tests are conducted using the RRV-6B to collect aero elastic data.
System identification was applied to the experimental data to obtain VFA characteristics. Finally, using this identified plant, a yaw stabilization autopilot was designed and flight tested, demonstrating significant improvements in handling qualities.
Publications
Pang, Z. Y., Cesnik, C. E. S., and Atkins, E. M., “In-Flight Wing Deformation Measurement System for Small Unmanned Aerial Vehicles,” 55th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, AIAA 2014.
Pang, Z. Y., and Cesnik, C. E. S., “Flight Shape Estimation of Very Flexible Unmanned Aerial Vehicle,” 57th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, AIAA, 2016.
Köthe, A., Luckner, R., González Ramirez, P. J., Silvestre, F. J., Pang, Z. Y., and Cesnik, C. E. S., “Development of Robust Flight Control Laws for a Highly Flexible Aircraft in the Frequency Domain,” AIAA Atmospheric Flight Mechanics Conference, AIAA, 2016
Gonzalez, P. J., Silvestre, F. J., Paglione, P., Köthe, A., Pang, Z. Y., and Cesnik, C. E. S., “Linear Control of Highly Flexible Aircraft based on Loop Separation,” AIAA Atmospheric Flight Mechanics Conference, AIAA, 2016.
PhD Candidate
Aerospace Engineering
This dissertation presents research on modeling, simulation, and control of very flexible aircraft (VFA). This work includes theoretical and numerical developments, as well as experimental validations.
On the theoretical front, aero elastic equations of motions are derived to model a VFA as well as sensor measurements. Two state estimation and reconstruction algorithms are explored, extracting structural deformation from noisy measurements.
Next, model predictive control (MPC) is applied to maneuver load alleviation of a representative VFA. Numerical studies are performed and MPC demonstrates both control and state constraints are successfully enforced.
On the experimental front, two aero elastic testbed vehicles (ATV-6B and RRV-6B) are constructed. On ATV-6B, an extensive set of sensors measuring structural, flight dynamic, and aerodynamic information is integrated on-board. A new stereo-vision measurement system mounted on the body center tracks high brightness LEDs markers embedded on the wing surface.
Finally, flight tests are conducted using the RRV-6B to collect aero elastic data.
System identification was applied to the experimental data to obtain VFA characteristics. Finally, using this identified plant, a yaw stabilization autopilot was designed and flight tested, demonstrating significant improvements in handling qualities.
Publications
Pang, Z. Y., Cesnik, C. E. S., and Atkins, E. M., “In-Flight Wing Deformation Measurement System for Small Unmanned Aerial Vehicles,” 55th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, AIAA 2014.
Pang, Z. Y., and Cesnik, C. E. S., “Flight Shape Estimation of Very Flexible Unmanned Aerial Vehicle,” 57th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, AIAA, 2016.
Köthe, A., Luckner, R., González Ramirez, P. J., Silvestre, F. J., Pang, Z. Y., and Cesnik, C. E. S., “Development of Robust Flight Control Laws for a Highly Flexible Aircraft in the Frequency Domain,” AIAA Atmospheric Flight Mechanics Conference, AIAA, 2016
Gonzalez, P. J., Silvestre, F. J., Paglione, P., Köthe, A., Pang, Z. Y., and Cesnik, C. E. S., “Linear Control of Highly Flexible Aircraft based on Loop Separation,” AIAA Atmospheric Flight Mechanics Conference, AIAA, 2016.
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