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Minimizing the thermal gradients is extremely important in a planar solid oxide fuel cell (SOFC) for improving the cell life. The estimation of the temperature distribution in the cell is necessary since it is difficult and costly to measure the temperature inside a high temperature, well-sealed cell directly. In this paper, a nonlinear Luenberger observer has been designed for estimating the temperature...
First, motion characteristics of near space hypersonic targets are given and the moving model for aircrafts is built. Then, according to the disadvantage which time sample is a constant when tracking hypersonic targets, an adaptive tracking algorithm of time samples is proposed. This algorithm used the recursion formula method in real time and mixed Singer model with algorithm of IMM. Simulation shows...
This paper studies a speed sensorless permanent magnet synchronous motor (PMSM) drive system based on the adaptive observer method, analyzes the problem of instability in the low-speed electric mode according to the observer linearization method. To solve this problem, the observer augmented with a signal injection technique is researched. The simulation results show that the method is effective to...
Providing reliable and quality of service (QoS) guarantee service is basic requirement for communication system. However, the intrinsic features of high-speed railway communication (HSRC), such as serious channel distortion, lack of perfect channel state information (CSI), severe Doppler effect, and sensitive to algorithm computation complexity, make this requirement hard to be met. In this paper,...
In high-speed railway communication system, due to its intrinsic features, on-going services are more prone to drop than in common communication systems. Therefore, existing admission control (AC) schemes designed for common communication systems cannot be directly used, otherwise the service dropping probability (SDP) requirement cannot be guaranteed. In this paper, a cross-layer AC scheme is designed...
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