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Smart grids (SGs), which can fully detect and monitor electrical parameters and user behaviours, have become a development trend of power networks. With larger scale and access of new energy, SGs become more vulnerable and unstable. Under this circumstance, unexpected line outages may cause more harm in SGs than in traditional power grids. Thus, accurate and fast localization of line outages is one...
Narrowband interference (NBI) is a major concern that constrains the performance and development of wireless local area network (WLAN) systems. Compressed sensing (CS) is a new and powerful signal processing technique that is applied to solve this problem in this paper. In the framework of structured CS (SCS), we investigated the multiple input multiple output (MIMO) WLAN system, and proposed a novel...
Golgi outposts (GOPs) that transport proteins in both the anterograde and retrograde directions play an important role in determining the dendritic morphology in developing neurons. To obtain their heterogeneous motion patterns, we present a data association based framework that first detects the GOPs and then links the detection responses. In the GOP detection stage, we introduce a multi-scale Markov...
A robust adaptive type-2 fuzzy logic controller is designed for the longitudinal dynamics of a flexible air-breathing hypersonic vehicle. The aircraft's pitch motion and flexible vibration are strongly coupled explicitly in the dynamic equations. The throttle setting is designed to control the velocity by dynamic inversion control method. The elevator deflection is designed to stabilize the pitch...
A seamless spectrum handover considering differential frequency channels is proposed to reduce the number of inter-cell handoff and to reduce the blocking/dropping probability of unlicensed secondary users (SUs). A two-dimensional markov chain model is proposed to evaluate the performance of the proposed handoff spectrum scheme. The proposed scheme can reduce the blocking rate and dropping rate of...
This paper follows IEEE 802.22 proposed coexistence beacon protocol (CBP), the mechanism carry the information of dynamic resource renting and offering to solve the problem of spectrum sharing for inter-BS (Base Station) coexistence mechanism. Due to high flexibility and low complexity, fuzzy rules based on empirical laws can dynamically adjust parameters to control the radio resources. The fuzzy...
The longitudinal motion model of a winged-cone configuration near space hypersonic flight vehicle is presented. Then the constituted nonlinear motion equations are linearized under different flight height and velocity to form a series of linear systems by small disturbance method. Each linear model is considered as a mode of a Markov jump system, which in whole make up a Markov jump system for the...
The reliability of Electro-mechanical Actuator (EMA) is extremely important in industrial, commercial, aerospace, and military applications. Fault diagnosis and location of the brushless DC motor (BLDCM) system used in the EMA offer a means of improving reliability and security of the EMA. In this paper normal model as well as three fault models of the BLDCM system, which are stator winding inter-turn...
In this paper, a 1/4 turns quadrifilar helix antenna is designed and analyzed by NAKANO equation with MOM. Radiation pattern is given as well as the current distribution on one arm. 3dB beam is wider than 180deg, which proves that the radiation character of the antenna is satisfactory. Then the working condition of the antenna is studied by attaching it to a satellite model. It is seen that after...
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