Jiajun Yu

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We investigate the implementation of field-weakening control for interior permanent magnet synchronous motor (IPMSM), and analyze the algorithm of field-weakening control in d-q axes. To deal with the problem that the dc-link voltage is not fully utilized when the voltage regulation is employed, we propose a new field-weakening scheme based on the(More)
In Cognitive Radio Networks (CRNs), a fundamental operation for the secondary users (SUs) is to establish communication through choosing a common available channel at the same time slot, which is referred to as rendezvous. In this paper, we study fast rendezvous for two SUs. The channel availability for SUs is subject to temporal and spatial variation.(More)
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