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通过模拟渐近法设计2极和2/4极绕组
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作者 米歇尔·波洛杰多 黄振坤 《电机译文集》 2001年第71期19-24,共6页
本文的目的是对于利用模拟渐近法来确定多速3相绕组的可能性进行探索。它局限于p/2p极性质的非常简单的情况。这个方案已得出了非常著名的解决办法;于是,就可以着手研究更加困难的问题了。
关键词 模拟渐近法 双速感应电机 极数绕组 极幅调制
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The effect of diffusion loss on the time-varying giant Panda population
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作者 Meng Zhang Guohua Song 《International Journal of Biomathematics》 2016年第4期239-258,共20页
It has been certificated that corridors can help giant pandas to keep their habitat from fragmenting. However there are still losses during the process of moving along corridors. In this study, a mathematical model wi... It has been certificated that corridors can help giant pandas to keep their habitat from fragmenting. However there are still losses during the process of moving along corridors. In this study, a mathematical model with Allee effect is carried out to describe the diffusion of giant pandas between n patches. Some criteria are obtained to keep the system persisting. It is proved that the system has a unique positive w-periodic solution which is globally asymptotically stable. The ecological meanings of these findings are discussed following the results. And some numerical simulations in the Qinling Mountain giant panda nature reservation area are also presented in the end. 展开更多
关键词 Giant panda diffusion loss persisting ω-periodic solution.
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