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.
Altitude regulation is a fundamental control problem of quadrotor UAVs (unmanned aerial vehicles) to ensure required performance for hovering and autonomous navigation. In this paper, under the assumption that the attitude inter loop has been well designed, the stability features of linear P+D+DD controller for altitude control are investigated. To handle the difficulty that the altitude velocity...
This paper proposes a linearised state-space technique to accelerate the simulation of tunable vibration energy harvesting systems by at least two orders of magnitude. The paper provides evidence that currently available simulation tools are inadequate for simulating complete energy harvesting systems where prohibitive CPU times are encountered due to disparate time scales. In the proposed technique,...
Trifocal tensor encapsulates the geometric constraints between three views. It plays an important role in computer vision. However elements in measurement matrix of existing linear trifocal tensor estimation algorithms are products of several measurement data, which can amplify measurement error. The factorization algorithm of trifocal tensor estimation is presented, which can overcome this shortcoming...
During the interruption process of SF6 circuit breaker, electrode erosion will occur inevitably, which leads to the contamination of pure SF6 and the alteration of arc characteristics. In the paper, to one puffer type circuit breaker, simulation studies are focused on the application of Spalart-Allmaras model for turbulence and species transport model for metallic vapour diffusion. In addition, the...
Dynamic matrix controllers (DMC) and model predictive controllers (MPC) have found wide application in the process industries. In order to design such a controller, a step response model of the process is often used. This paper will provide an algorithm for obtaining the step response model of a process based on closed-loop operating data generated by a step change in the setpoint. This algorithm...
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.