The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
This paper considers the problem of convoy protection missions using a fixed-wing Unmanned Aerial Vehicle (UAV) in scenarios where the radius of the circular region of interest around the convoy is smaller than the UAV minimum turning radius. Using the Moving Path Following (MPF) method, we propose a guidance algorithmic strategy where a UAV moving at constant ground speed is required to converge...
This paper presents a method for generating three-dimensional paths for a vehicle with a bounded maximum curvature in both yaw and pitch rotations. We build upon the two-dimensional time-optimal path generation for constant speed vehicles with bounded steering that produces the socalled Dubins curves. We formulate a similar problem in three-dimensional space and solve it with the additional constraints...
The increasing prospect of electric drive vehicles has led many different control schemes to apply on the driving system. Differential speed steering which do not use traditional steering mechanism is studied on a four-wheel-driving vehicle. By comparison with the traditional Ackerman-steered vehicle, differential-steered method shown its advantage on the simple structure. However, since the steering...
Motion planning for a formation of nonholonomic fixed-wing UAVs in environments with obstacles is a challenge especially when the operating envelope of the platform's is considered in the planning problem. This paper presents a rapid formation motion planning algorithm to determine a formation leader trajectory between a start pose and a final pose in the presence of stationary obstacles (static no-fly-zones)...
This paper proposes an extremum-seeking approach for source tracing problems with vehicles subjected to minimum turning radius and nonholonomic constraints. The admissible area for the vehicles is confined within boundary constraints. Extremum-seeking control with sliding mode is utilized for direction finding, and variable structure control is designed to address the constraints on vehicle kinematics...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.