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.
Under the condition of low short circuit capacity and high grid impedance of weak grid, the grid voltage is easily fluctuated due to the load change, affecting the power quality of the grid. In view of this problem, firstly, this paper analyzes the principle of the grid-connected voltage change caused by the load change. Secondly, an improved voltage-power control method (PQ-U) for three-phase grid-connected...
In the integrated navigation system, unscented Kalman filter (UKF) has been widely used. Compared to traditional Kalman filter and extended Kalman filter, the UKF algorithm has improved in accuracy than Kalman filter. However, UKF has no strict mathematical proof, and when the order of the system increases, the error of UKF becomes larger, even cause divergence. In this paper higher order cubature...
Subgriding is much desirable for FDTD modeling of small structures in large structures. However, it has remained to be very challenging for its instability. In this paper, we propose a simple subgridding scheme that takes advantage of the explicit unconditionally stable finite-difference time-domain (FDTD) method free of unstable modes: it is applied to the coarse mesh regions with larger space steps...
In this paper, we consider the problem of stabilization control for a kind of hybrid systems. Based on the double regulation control mechanisms (DRCM), because of the robustness of the control method, the systematic method for the stabilization control of hybrid systems is proposed. Firstly, inspired by the concept of mean value in probability theory, we introduce the mean function, and we can regard...
In this paper the closed-loop model of a novel MEMS inertial sensor with the actuators drived by Lorentz force for increasing the initial sensing capacitance is established and the simulations are finished by using Matlab/Simulink. By comparing the different results between the open-loop and closed-loop, the performance of the sensor is analyzed. The results show that in closed-loop state, when the...
Interest in the UAVs technology has grown tremendously over the years because of their usefulness in applications ranging from military to scientific research because of their ability to perform dangerous missions without risking human life. Flying quality criteria are currently being formulated for the UAVs. This may result in high loss rates, reduced efficiency and increased developmental cost....
In this paper, we analyze the stability of a class of interconnected systems with subsystem unmodeled dynamics and dynamic interactions employing decentralized adaptive controllers designed in [Wen, C., et al.] in the presence of actuator failures. It will be shown that the global stability of rest closed-loop system can still be achieved and the outputs can be regulated to zeros when some subsystems...
A novel approach of multi-perspective panorama (route panorama) auto-generating is presented, which is based on the integration of pushbroom model and perspective projection model. This method can avoid objects distortion and information loss caused by the rate change of the moving camera and/or the camera carrier. Further more, this method has overcome various unstabilizing factors through stability...
A self-tuning controller is presented for the process described by a controlled auto-regressive integrated moving average model in the presence of bounded disturbances. The bounded-input bounded-output stability is proven and a upper bound of the tracking error is also given. The controller produces an integral control term in a natural way, so the offset can be avoided.
In this paper a proof of bounded-input bounded-output stability of a discrete-time self-tuning control system in the presence of bounded disturbances is given. The controller considered in the paper minimizes a quadratic cost function and can be used for nonminimum phase systems, and its parameter estimation scheme employs a recursive least-squares with a dead zone.
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.