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基于模糊控制理论集的自适应数据融合与修正研究
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作者 欧志新 李继侠 邓春兰 《电气传动》 2023年第12期55-61,共7页
电网电能传输的可靠性和稳定性是行车安全的保障,由于外部干扰波动和电流电弧对电网结构的影响,其参数获取和动态建模变得困难。首先,分析电网结构失真度和模型结构变化的特点,采用基于理论集的模糊控制分析电网动态电能传输的特点。其... 电网电能传输的可靠性和稳定性是行车安全的保障,由于外部干扰波动和电流电弧对电网结构的影响,其参数获取和动态建模变得困难。首先,分析电网结构失真度和模型结构变化的特点,采用基于理论集的模糊控制分析电网动态电能传输的特点。其次,对于采样电流的多变模型进行数据融合,结合自适应控制的策略,在线修正误差超调和抑制波动,并寻求模糊控制约束保持其局部最小的误差均方值稳定。最后,通过实验参数建立Simulink模糊仿真模型验证了自适应数据融合技术能有效地修正误差和波动,保证良好的行车电能传输。 展开更多
关键词 电网系统 模糊控制理论集 自适应控制 数据融合
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Trust Management Mechanism for Internet of Things 被引量:4
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作者 GU Lize WANG Jingpei SUN Bin 《China Communications》 SCIE CSCD 2014年第2期148-156,共9页
Trust management has been proven to be a useful technology for providing security service and as a consequence has been used in many applications such as P2P, Grid, ad hoc network and so on. However, few researches ab... Trust management has been proven to be a useful technology for providing security service and as a consequence has been used in many applications such as P2P, Grid, ad hoc network and so on. However, few researches about trust mechanism for Internet of Things (IoT) could be found in the literature, though we argue that considerable necessity is held for applying trust mechanism to IoT. In this paper, we establish a formal trust management control mechanism based on architecture modeling of IoT. We decompose the IoT into three layers, which are sensor layer, core layer and application layer, from aspects of network composition of loT. Each layer is controlled by trust management for special purpose: self-organized, affective routing and multi-service respectively. And the final decision-making is performed by service requester according to the collected trust information as well as requester' policy. Finally, we use a formal semantics-based and fuzzy set theory to realize all above trust mechanism, the result of which provides a general framework for the development of trust models of IoT. 展开更多
关键词 Internet of Things trustmanagement formal semantics trust decision-making
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