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基于仿射热模型的质子交换膜燃料电池电堆的热管理控制 被引量:2
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作者 李曦 曹广益 +1 位作者 朱新坚 邵庆龙 《动力工程》 EI CAS CSCD 北大核心 2006年第3期443-446,共4页
质子交换膜燃料电池(PEMFC)电堆工作温度对电堆的性能和运行寿命有很大影响。为了实现质子交换膜燃料电池电堆温度的有效控制,根据电堆能量守恒原理建立了电堆动态热管理模型。由于该模型是具有参数不确定和易受外界干扰的非线性模型,为... 质子交换膜燃料电池(PEMFC)电堆工作温度对电堆的性能和运行寿命有很大影响。为了实现质子交换膜燃料电池电堆温度的有效控制,根据电堆能量守恒原理建立了电堆动态热管理模型。由于该模型是具有参数不确定和易受外界干扰的非线性模型,为此,采用了线性二次型优化控制和李亚普诺夫函数的递推设计方法设计了具有强鲁棒性的自适应控制器两种控制算法对电堆温度进行控制,数字测试验证了该算法的有效性。 展开更多
关键词 能源系统工程 质子交换膜燃料电池 热管理模型 自校正控制 线性二次型优化控制
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Modeling and Analysis of Data Dependencies in Business Process for Data-Intensive Services 被引量:1
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作者 yuze huang jiwei huang +1 位作者 budan wu junliang chen 《China Communications》 SCIE CSCD 2017年第10期151-163,共13页
With the growing popularity of data-intensive services on the Internet, the traditional process-centric model for business process meets challenges due to the lack of abilities to describe data semantics and dependenc... With the growing popularity of data-intensive services on the Internet, the traditional process-centric model for business process meets challenges due to the lack of abilities to describe data semantics and dependencies, resulting in the inflexibility of the design and implement for the processes. This paper proposes a novel data-aware business process model which is able to describe both explicit control flow and implicit data flow. Data model with dependencies which are formulated by Linear-time Temporal Logic(LTL) is presented, and their satisfiability is validated by an automaton-based model checking algorithm. Data dependencies are fully considered in modeling phase, which helps to improve the efficiency and reliability of programming during developing phase. Finally, a prototype system based on j BPM for data-aware workflow is designed using such model, and has been deployed to Beijing Kingfore heating management system to validate the flexibility, efficacy and convenience of our approach for massive coding and large-scale system management in reality. 展开更多
关键词 data-aware business process data-intensive services data dependency linear-time temporal logic(LTL) services computing
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