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基于分级模糊神经网络的水电机组故障诊断 被引量:2
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作者 张允 孟祥萍 +1 位作者 王瑾 梁春晖 《河海大学学报(自然科学版)》 CAS CSCD 北大核心 2009年第3期335-340,共6页
针对水电机组发生故障时,故障征兆与故障原因之间复杂的对应关系,提出了一种新型的基于低、中、高3级模糊神经网络的故障诊断结构模型和相应的学习算法,并以此方法对该分级模糊神经网络进行了仿真训练.仿真实验结果表明,该方法能有效地... 针对水电机组发生故障时,故障征兆与故障原因之间复杂的对应关系,提出了一种新型的基于低、中、高3级模糊神经网络的故障诊断结构模型和相应的学习算法,并以此方法对该分级模糊神经网络进行了仿真训练.仿真实验结果表明,该方法能有效地对水电机组单故障与多故障样本进行分类,可提高诊断准确率. 展开更多
关键词 分级模糊神经网络 故障诊断 水电机组
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A special hierarchical fuzzy neural-networks based reinforcement learning for multi-variables system
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作者 张文志 吕恬生 《Journal of Harbin Institute of Technology(New Series)》 EI CAS 2005年第6期661-666,共6页
Proposes a reinforcement learning scheme based on a special Hierarchical Fuzzy Neural-Networks (HFNN)for solving complicated learning tasks in a continuous multi-variables environment. The output of the previous layer... Proposes a reinforcement learning scheme based on a special Hierarchical Fuzzy Neural-Networks (HFNN)for solving complicated learning tasks in a continuous multi-variables environment. The output of the previous layer in the HFNN is no longer used as if-part of the next layer, but used only in then-part. Thus it can deal with the difficulty when the output of the previous layer is meaningless or its meaning is uncertain. The proposed HFNN has a minimal number of fuzzy rules and can successfully solve the problem of rules combination explosion and decrease the quantity of computation and memory requirement. In the learning process, two HFNN with the same structure perform fuzzy action composition and evaluation function approximation simultaneously where the parameters of neural-networks are tuned and updated on line by using gradient descent algorithm. The reinforcement learning method is proved to be correct and feasible by simulation of a double inverted pendulum system. 展开更多
关键词 hierarchical fuzzy neural-networks reinforcement learning double inverted pendulum
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