This paper deals with a nonlinear adaptive autopilot design for agile missile systems. In advance of the autopilot design, an investigation of the agile turn maneuver, based on the trajectory optimization, is performed to determine state behaviors during the agile turn phase. This investigation shows that there exist highly nonlinear, rapidly changing dynamics and aerodynamic uncertainties. To ...

High-performance computing is rapidly expanding to include distributed collections of heterogeneous sequential and parallel systems and irregular applications with complex, data dependent execution behavior and time varying resource demands. To provide adaptive resource management for dynamic applications, we are developing the Autopilot toolkit. Autopilot provides a exible set of performance s...

Conflict resolution, namely avoidance of aircraft crushes, is one of the main problems to be solved in a free flight based air traffic system. The researches on conflict resolution are mainly performed in simulative environments. In the work presented here, a simple lateral director autopilot is designed for conflict resolution studies. Using such a simple autopilot, real aircraft dynamics can ...

This paper describes the application of Lyapunov stability theory to automatic steering of ships. The motivation for using nonlinear control theory is that nonlinearities can be compensated for in a systematic manner. For instance, this allows the designer to design the autopilot system for a ship described by the nonlinear models of Norrbin (1963) and Bech and Wagner Smith (1969) both utilizin...

BACKGROUND Eye tracking is an accurate and objective means of measuring an instrument scan pattern. The purpose of this study was to determine if prior aircraft experience, phase of flight, and autopilot mode modified the instrument scan pattern of F-117A pilots. METHODS There were 23 F-117A pilots, grouped by prior aircraft experience, who flew an instrument approach manually and with autopi...

The main goal here is to design a proper and efficient controller for a ship autopilot based on the sliding mode control method. A hydrodynamic numerical model of CyberShip II including wave effects is applied to simulate the ship autopilot system by using time domain analysis. To compare the results similar research was conducted with the PD controller, which was adapted to the autopilot syste...

The optimisation by Genetic Algorithm (GA) of a non-linear autopilot for ship course changing is studied in this paper. The theory of the optimisation technique is presented from its basis in Darwinian evolution to the development of the form of optimisation algorithm used in the application. This application involves a Sliding Mode (SM) controller for use as a course changing autopilot for a s...

This paper presents a trajectory tracking fault-tolerant control strategy inside an autonomous emergency landing architecture to quadrotor in case of partial rotor fault. The proposed architecture, which is composed required hardware and subsystems, aims ensure fully safe the impaired suitable site. controller strategy, tried be coincident with Pixhawk autopilot contains cascade three-loop stru...

This paper presents the guidance algorithm for circular formation flight of multiple fixed-wing UAVs. The law aims at reducing both radial and phase angle error with respect to moving reference point located a fixed distance from leader UAV. To this end, proposed generates desired course inertial speed commands each follower control are then converted roll airspeed autopilot. theoretical stabil...