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Independent component analysis (ICA) can obtain the harmonic current without the harmonic impendence parameters, but it's not capable of estimating the amplitude of harmonic current accurately. However, to effectively estimate the harmonic state of power network and analyze the harmoic distortion level, the amplitude of harmonic current is very important. In order to solving the problem abrove, a...
In order to improve the reliability of gas monitoring in coal mine, we design a wireless sensor networks with the piezoelectric gas sensors, The wireless sensor networks is suitable for gas monitoring in the severe environment of coal mine. The networks' topology is sub-cluster type, and the cluster head node is selected in competitive method. Data fusion and routing of the cluster nodes are controlled...
In order to solve capacity increasing of solar power system and the system's paralysis caused by the failure of host controller, a new controller was designed in this paper. Control system adopted two-level architecture which consisted of host controller and power modules. CAN bus technology was used for communication. It was easy to form solar power system of different capacities through combination...
The continuous improvement on the design methodologies and processes has made possible the creation of huge and very complex digital systems. Design verification is one of the main tasks in the design flow, aiming to certify the system functionality has been accomplished accordingly to the specification. A simulation based technique known as functional verification has been followed widely. In recent...
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