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考虑电池衰退成本的HEV自适应等效能耗最小化策略
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作者 周彬 王代辉 +2 位作者 杨志峰 amir rezaei 董元发 《计算机集成制造系统》 北大核心 2025年第8期2983-2998,共16页
能量管理策略是混合动力汽车实现其综合经济性指标的关键技术。针对混合动力汽车电池损耗过快和由荷电状态限值引起的节能机会损失问题,提出了一种可在线实施考虑电池衰退成本的自适应等效能耗最小化策略。该策略基于车辆性能需求,考虑... 能量管理策略是混合动力汽车实现其综合经济性指标的关键技术。针对混合动力汽车电池损耗过快和由荷电状态限值引起的节能机会损失问题,提出了一种可在线实施考虑电池衰退成本的自适应等效能耗最小化策略。该策略基于车辆性能需求,考虑需求功率动态匹配下的燃油经济性与电池寿命博弈问题,构建包含电池衰退成本的哈密顿代价函数;然后基于人工势场法,以消弭荷电状态限值引起地节能机会损失为目标,在电荷维持模式中通过对电池寿命权重与燃油经济性的参数影响分析,设计考虑实时性的等效因子自适应控制策略。最后以典型并联式混合动力乘用车为例进行了仿真验证,结果表明:相较于仅考虑燃油经济性的自适应等效能耗最小化策略,本方法在相同道路工况下在基本持平燃油消耗的同时最高可改善21.7%的电池使用寿命。 展开更多
关键词 混合动力汽车 能量管理策略 电池寿命与燃油经济性
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Reflectivity/Impulsivity as an Important Individual Factor and Effectiveness of Awareness Raising Activities
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作者 amir rezaei Tahereh Boroghani Mohammad Ali Rahimi 《Sino-US English Teaching》 2013年第4期281-286,共6页
This paper is a summary of the studies done on the importance of the cognitive styles especially reflectivity/impulsivity on the process of language acquisition. It discusses the importance of this cognitive style as ... This paper is a summary of the studies done on the importance of the cognitive styles especially reflectivity/impulsivity on the process of language acquisition. It discusses the importance of this cognitive style as an important factor on the effectiveness of awareness raising activities. In the previous studies, the importance of awareness raising has been found as an effective and facilitating factor in the process of the L2 (second language) acquisition, but the effect of different individual factors on its being usefulness has not been focused on; therefore, this study is an attempt to review and explore the importance of one of the individual factors, i.e., being reflective/impulsive cognitive style on the effectiveness of awareness raising activities. It is gathered that learners with different cognitive styles (being reflective/impulsive) react differently to the awareness giving activities, and the study tries to emphasize the importance of this factor on the usefulness of awareness raising and emphasizes the fact that in the field of awareness giving this factor should be attached impotence and accounted for as an effective factor. 展开更多
关键词 IMPULSIVITY REFLECTIVITY awareness raising TLA (teachers' language awareness)
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Exploring EFL Learners Reading Comprehension Problems in Reading ESP Texts
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作者 amir rezaei Siavash Talepasand Mohammad Ali Rahimi 《Sino-US English Teaching》 2012年第3期982-987,共6页
By considering the fact that in EFL (English as foreign language) contexts learners need reading comprehension skill more than other skills in their academic studies, reading comprehension should be attached more im... By considering the fact that in EFL (English as foreign language) contexts learners need reading comprehension skill more than other skills in their academic studies, reading comprehension should be attached more importance especialy in ESP (English for specific purposes) classes in which reading ability plays a crucial role in the students' academic success. But in order to help learners in the best possible way, teachers need to identify their learners' problems in reading ESP texts. Detecting the problematic areas for the students will assist teachers better design and apply appropriate methods and strategies to solve their students' reading comprehension problems. Therefore, the following research was an attempt to explore the EFL learners' reading comprehension problmes in reading ESP texts in ESP classes. For the purpose of the study, five passages from their coursebook were selected and they were asked to underline the syntactically problematic parts in the passages. The subjects of the study were composed of 185 homogenous engineering students who were learning english as a foregin langauge. Chi-square analysis showed that 15 major syntactic categories are serious hurdle to reading comprehension of ESP texts. The results and implications are discussed in the light of TLA (teachers' language awareness). 展开更多
关键词 ESP (English for specific purposes) texts teachers' language awareness reading comprehension
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