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.
The tilt tri-rotor UAV which combines the advantages of both rotary wing and fixed wing vehicle, offers the capability of hover, vertical take-off and landing and fast forward movement. Because of the complex structure and aerodynamics, the modeling and control of tilt tri-rotor UAV reamians a problem. In this paper, precise model of a tilt tri-rotor UAV is developed by combing system identification...
With regard to the objective of stealthy optimization in control surface deflection, the stealth-based multi-effectors distribution scheme is presented for flying wing in this paper. The radar cross section (RCS) of each control surface is calculated and analyzed. The stealthy efficiency data curves are obtained through comparing the deflection values with the normal state. Taking the objective of...
This paper focuses on the transition flight control for a small tilt rotor unmanned aerial vehicle (UAV). Aiming at the longitudinal model of a tilt rotor UAV, a novel sliding mode control (SMC) method is proposed to guarantee that the states converge to the desired sliding surfaces in finite time. Moreover, extended state observers (ESOs) are provided to enhance the system's robustness to the uncertainties...
In order to improve the performance of the integrated navigation system, a new navigation resource management method based on an efficiency function is proposed in this paper. Firstly, the framework of the navigation resource management method is established. Secondly, the representation of the efficiency function is given, which based on the navigation accuracy, the sensor accuracy and the navigation...
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.