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将国内外同步器建模与仿真方法归纳总结为3类:基于简单数学模型的方法、基于分阶段机理分析的方法及基于虚拟样机技术的方法。详细阐述了3类方法的基本原理、研究进展及各自优缺点;从建模精度、建模难度、运算速度、应用范围等多维度对3类方法进行了量化对比分析,为选用合适的同步器建模与仿真方法提供了参考。 相似文献
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This paper proposes a detecting and tracking scheme for automatic checking attendance of traffic controllers in level crossing by recognizing their warning waistcoats. Considering of the actual requirement of rapidity and validity, this paper employs techniques of motion detection, color segmentation and feature matching to deal with the challenging problems of illumination varying, light reflection and disturbance. Therefore, the task of distinguishing the target from candidates can be fulfilled accurately. Once a target being detected, the established color models are modified through learning color of the detected target, and then Cam-shift algorithm is employed to track this target smoothly. The experiments in real scenes demonstrate that this method has a great capability to detect and track traffic controllers in complex level crossing environment accurately, and the comparisons further demonstrate the validity of the proposed method. 相似文献
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