Attitude control of tiltwing aircraft using a wing-fixed coordinate system and incremental nonlinear dynamic inversion

Nonlinear Dynamic Inversion Control of a Miniature Morphing Aircraft

Cascaded Incremental Nonlinear Dynamic Inversion Control for MAV Disturbance Rejection

Micro Aerial Vehicles (MAVs) are limited in their operation outdoors near obstacles by their ability to withstand wind gusts. Currently widespread position control methods such as Proportional Integral Derivative control do not perform well under the influence of gusts. Incremental Nonlinear Dynamic Inversion (INDI) is a sensor-based control technique that can control nonlinear systems subject ...

Agile Flight Control Techniques for a Fixed-Wing Aircraft

As unmanned aerial vehicles (UAVs) become more involved in challenging mission objectives, the need for agility controlled flight becomes more of a necessity. The ability to navigate through constrained environments as well as quickly maneuver to each mission target is essential. Currently, individual vehicles are developed with a particular mission objective, whether it be persistent surveilla...

Aircraft Flight Control in Wind Shear Using Sequential Dynamic Inversion

Longitudinal wind shear flight control laws are developed for the dynamics of a twin-jet transport aircraft using nonlinear dynamic inversion. Time-scale decomposition simplifies controller design by partitioning it into slow and fast time scales. The effects of time-varying winds are explicitly considered in the derivation of the controllers. Three inverting controllers are developed and evalu...

Fixed-Wing Attitude Estimation Using Computer Vision Based Horizon Detection

The last decade has seen a dramatic expansion in the deployment of Unmanned Airborne Vehicles (UAVs) as witnessed by deployments to Bosnia, Afghanistan and Iraq. Many low-cost UAVs operate without redundant attitude sensors and are therefore highly vulnerable to the failure of such sensors. It is common for low-cost UAVs to carry a vision sensor as its primary payload. Given that a human pilot ...