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In LTE-Advanced or 802.16m WiMAX-based relay networks, the downlink broadcast of massive amounts of data is a crucial application. To help the application save the radio resource consumption significantly, it is necessary to find the minimum resource allocation such that the Base Station (BS) and all designated Mobile Stations (MSs) are connected via a subset of Relay Stations (RSs). In this context,...
In the medium frequency voltage source paralleled inverters, the paralleled diodes in IGBTs run as rectifier before the inverter starts, and the DC capacitor could be damaged by over voltage because of the transient of the circuit. This paper analyzed the characteristics of medium-frequency inverter in parallel operation, compared to the 50Hz inverter. The simplified system model is setup, and the...
This paper proposed Multiple-Models Adaptive Estimation (MMAE) for Failure Detection and Identification (FDI) of aircraft components, i.e, flaps, landing gears. The MMAE FDI consists of parallel Kalman filters and each Kalman filter is constructed to represent a specific failure mode including the nominal mode. The Kalman filter residuals are post processed to produce the log-likelihood function values...
Focusing on adaptive control problems of nonlinear industrial processes, this paper proposes an modified iterative scheme of the closed-loop identification and design a δ-model adaptive controller based on plant-parameterization. The modification enables to identify the whole plant using only one coefficient and without the necessity of reducing the order of a new plant model. Moreover, instead of...
Water hydraulic servo system is attractive technology for safety environment. This paper presents a design method of a robust rotational velocity controller of water hydraulic servomotor for the uncertain parameters and the load fluctuation. To overcome the highly nonlinearity of flow equation, we linearize and parametrize it. Considering the effect of uncertain parameter perturbation, e.g. load fluctuation...
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