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On the Problem of All Equal Positive Odd Number Solutions of the Dissemination of the Ends' Guess 被引量:1
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作者 刘元宗 《Chinese Quarterly Journal of Mathematics》 CSCD 2000年第2期108-109,共2页
The thesis is concerned with the problem of the dissemination of the Ends’ guess and offers the formula of all equal positive odd number solutions.
关键词 Ends’ guess DISSEMINATION all equal positive odd number solutions
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Products of Odd Numbers or Prime Number Can Generate the Three Members’ Families of Fermat Last Theorem and the Theorem Is Valid for Summation of Squares of More Than Two Natural Numbers
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作者 Susmita Pramanik Deepak Kumar Das Panchanan Pramanik 《Advances in Pure Mathematics》 2023年第10期635-641,共7页
Fermat’s last theorem, had the statement that there are no natural numbers A, B, and C such that A<sup>n</sup> + B<sup>n</sup> = C<sup>n</sup>, in which n is a natural number great... Fermat’s last theorem, had the statement that there are no natural numbers A, B, and C such that A<sup>n</sup> + B<sup>n</sup> = C<sup>n</sup>, in which n is a natural number greater than 2. We have shown that any product of two odd numbers can generate Fermat or Pythagoras triple (A, B, C) following n = 2 and also it is applicable A<sup>2</sup> + B<sup>2</sup> + C<sup>2</sup> + D<sup>2</sup> + so on =A<sub>n</sub><sup>2 </sup>where all are natural numbers. 展开更多
关键词 Fermat Last Theorem Generation of Fermat’s numbers Extension of Fermat’s Expression Fermat’s Expression from Products of odd numbers
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Five Consecutive Positive Odd Numbers None of Which Can Be Expressed as a Sum of Two Prime Powers Ⅱ
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作者 Yong Gao CHEN Min TANG 《Acta Mathematica Sinica,English Series》 SCIE CSCD 2008年第11期1883-1890,共8页
In this paper, we find two integers k0, m of 159 decimal digits such that if k ≡ k0 (mod m), then none of five consecutive odd numbers k, k - 2, k - 4, k - 6 and k - 8 can be expressed in the form 2^n ± p^α, ... In this paper, we find two integers k0, m of 159 decimal digits such that if k ≡ k0 (mod m), then none of five consecutive odd numbers k, k - 2, k - 4, k - 6 and k - 8 can be expressed in the form 2^n ± p^α, where p is a prime and n, α are nonnegative integers. 展开更多
关键词 Erdos problems covering systems odd numbers sums of prime powers
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Very Original Proofs of Two Famous Problems: “Are There Any Odd Perfect Numbers?” (Unsolved until to Date) and “Fermat’s Last Theorem: A New Proof of Theorem (Less than One and a Half Pages) and Its Generalization” 被引量:2
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作者 Demetrius Chr. Poulkas 《Advances in Pure Mathematics》 2021年第11期891-928,共38页
This article presents very original and relatively brief or very brief proofs about of two famous problems: 1) Are there any odd perfect numbers? and 2) “Fermat’s last theorem: A new proof of theorem and its general... This article presents very original and relatively brief or very brief proofs about of two famous problems: 1) Are there any odd perfect numbers? and 2) “Fermat’s last theorem: A new proof of theorem and its generalization”. They are achieved with elementary mathematics. This is why these proofs can be easily understood by any mathematician or anyone who knows basic mathematics. Note that, in both problems, proof by contradiction was used as a method of proof. The first of the two problems to date has not been resolved. Its proof is completely original and was not based on the work of other researchers. On the contrary, it was based on a simple observation that all natural divisors of a positive integer appear in pairs. The aim of the first work is to solve one of the unsolved, for many years, problems of the mathematics which belong to the field of number theory. I believe that if the present proof is recognized by the mathematical community, it may signal a different way of solving unsolved problems. For the second problem, it is very important the fact that it is generalized to an arbitrarily large number of variables. This generalization is essentially a new theorem in the field of the number theory. To the classical problem, two solutions are given, which are presented in the chronological order in which they were achieved. Note that the second solution is very short and does not exceed one and a half pages. This leads me to believe that Fermat, as a great mathematician was not lying and that he had probably solved the problem, as he stated in his historic its letter, with a correspondingly brief solution. To win the bet on the question of whether Fermat was telling truth or lying, go immediately to the end of this article before the General Conclusions. 展开更多
关键词 Perfect numbers odd Perfect numbers Fermat’s Last Theorem Generalization of the Fermat’s Last Theorem Prime number Problems Millennium Problems
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Generalized Central Factorial Numbers with Odd Arguments 被引量:1
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作者 Youmna H. Zaid F. A. Shiha B. S. El-Desouky 《Open Journal of Modelling and Simulation》 2020年第3期61-72,共12页
In this paper, we consider <i>r</i>-generalization of the central factorial numbers with odd arguments of the first and second kind. Mainly, we obtain various identities and properties related to these num... In this paper, we consider <i>r</i>-generalization of the central factorial numbers with odd arguments of the first and second kind. Mainly, we obtain various identities and properties related to these numbers. Matrix representation and the relation between these numbers and Pascal matrix are given. Furthermore, the distributions of the signless r-central factorial numbers are derived. In addition, connections between these numbers and the Legendre-Stirling numbers are given. 展开更多
关键词 Generalized Central Factorial numbers with odd Arguments Pascal Matrix Legendre-Stirling numbers
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棒棒糖图的奇圈扩张图的图兰数
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作者 耿若 娴徐静 《数学进展》 北大核心 2026年第1期35-44,共10页
给定图H,其图兰数ex(n,H)是指顶点数为n,并且不包含H作为子图的图的最大边数.给定图M和奇数q≥3,其奇圈扩张图M(q)是指将M中的每条边替换为长度在3到q之间的奇圈所得的图,这里所有奇圈中的新顶点是不同的.本文证明棒棒糖图的奇圈扩张图... 给定图H,其图兰数ex(n,H)是指顶点数为n,并且不包含H作为子图的图的最大边数.给定图M和奇数q≥3,其奇圈扩张图M(q)是指将M中的每条边替换为长度在3到q之间的奇圈所得的图,这里所有奇圈中的新顶点是不同的.本文证明棒棒糖图的奇圈扩张图的图兰数,并刻画极值图. 展开更多
关键词 图兰数 奇圈扩张 分解集 棒棒糖图
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On Sums of Powers of Odd Integers
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作者 Songbai GUO Youjian SHEN 《Journal of Mathematical Research with Applications》 CSCD 2013年第6期666-672,共7页
In this paper, by using superposition method, we aim to show that ∑^n i=1 (2/- 1)^2k-1 is the product of n2 and a rational polynomial in n2 with degree k- 1, and that ∑^ni=1 (2i - 1)^2k is the product of n(2n ... In this paper, by using superposition method, we aim to show that ∑^n i=1 (2/- 1)^2k-1 is the product of n2 and a rational polynomial in n2 with degree k- 1, and that ∑^ni=1 (2i - 1)^2k is the product of n(2n - 1)(2n + 1) and a rational polynomial in (2n - 1)(2n + 1) with degree k - 1. Moreover, recurrence formulas to compute the coefficients of the corresponding rational polynomials are also obtained. 展开更多
关键词 odd number sums of powers binomial theorem superposition method.
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The Nuclear Chemistry Odd-Even Periodic Table of the Elements
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作者 SHEN Yu-hua WU Zhi-fu +2 位作者 XIE An-jian DENG De-hua MA Ying 《Journal of Chemistry and Chemical Engineering》 2009年第4期59-65,共7页
Odd-Even Periodic Table of Chemical Elements designed by the authors settles the position of Hydrogen and Helium, Additionally, it yields no exceptional arrangements for neither the Lanthanides, Actinide and Super Act... Odd-Even Periodic Table of Chemical Elements designed by the authors settles the position of Hydrogen and Helium, Additionally, it yields no exceptional arrangements for neither the Lanthanides, Actinide and Super Actinides nor the six empty spots and the controversy on the positions of hydrogen and helium has been settled. It plays an important role in comparing the stability of nucleons and predicting the ordinal of the terminal element. 展开更多
关键词 nuclear chemistry Periodic Table odd number even number
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Study on the methods to calculate the numbers of elements in every period in the periodic table
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作者 WU Zhi-fu DENG De-hua +2 位作者 SHEN Yu-hua XIE An-jian CHEN Zhang-xu 《Journal of Chemistry and Chemical Engineering》 2008年第4期71-74,共4页
The previous methods of figuring the numbers of chemical elements is summed up in this paper. Based on that, another two creative calculative methods are introduced as well.
关键词 the periodic table of elements the odd number theeven number calculative methods
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Some Results of a Certain Odd Perfect Numb er 被引量:1
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作者 ZHANG Si-bao 《Chinese Quarterly Journal of Mathematics》 CSCD 2014年第2期167-170,共4页
Define the total number of distinct prime factors of an odd perfect number n asω(n). We prove that if n is an odd perfect number which is relatively prime to 3 and 5 and7, then ω(n) ≥ 107. And using this result, we... Define the total number of distinct prime factors of an odd perfect number n asω(n). We prove that if n is an odd perfect number which is relatively prime to 3 and 5 and7, then ω(n) ≥ 107. And using this result, we give a conclusion that the third largest prime factor of such an odd perfect number exceeds 1283. 展开更多
关键词 odd perfect numbers the total number of distinct prime factors the thirdlargest prime factor
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Gauss’ Problem, Negative Pell’s Equation and Odd Graphs
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作者 Aleksander Grytczuk 《Advances in Pure Mathematics》 2011年第4期133-135,共3页
In this paper we present some results connected with still open problem of Gauss, negative Pell’s equation and some type graphs.In particular we prove in the Theorem 1 that all real quadratic fields K=Q( ) , generate... In this paper we present some results connected with still open problem of Gauss, negative Pell’s equation and some type graphs.In particular we prove in the Theorem 1 that all real quadratic fields K=Q( ) , generated by Fermat’s numbers with d=Fm+1=22m+1+1,m≥2, have not unique factorization. Theorem 2 give a connection of the Gauss problem with primitive Pythagorean triples. Moreover, in final part of our paper we indicate on some connections of the Gauss problem with odd graphs investigated by Cremona and Odoni in the papper [5]. 展开更多
关键词 Fermat numbers Class-number Gauss’ PROBLEM odd GRAPHS
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The Proof of Goldbach’s Conjecture on Prime Numbers
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作者 Silviu Guiasu 《Natural Science》 2019年第9期273-283,共11页
Goldbach’s Conjecture (“Every even positive integer strictly larger than 4 is the sum of two primes”) has remained unproven since 1742. This paper contains the proof that every positive composite integer n strictly... Goldbach’s Conjecture (“Every even positive integer strictly larger than 4 is the sum of two primes”) has remained unproven since 1742. This paper contains the proof that every positive composite integer n strictly larger than 3, is located at the middle of the distance between two primes, which implicitly proves Goldbach’s Conjecture for 2n as well. 展开更多
关键词 PROOF of Goldbach’s CONJECTURE Hidden Symmetry of PRIMES Matching PRIMES and Composite INTEGERS Arranging odd INTEGERS in Frames The Existence and the number of GOLDBACH Solutions
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第Ⅴ类两态叠加多模叠加态光场的等阶N次方H压缩特性研究 被引量:26
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作者 杨志勇 董庆彦 +2 位作者 侯瑶 薛红 侯洵 《光子学报》 EI CAS CSCD 北大核心 2001年第7期769-779,共11页
本文构造了由多模真空态 |{ 0 j}〉q和多模虚相干态的相反态 |{ - i Zj}〉q这两者的线性叠加所组成的第 类两态叠加多模叠加态光场 |ψ( 2 )5〉q,利用多模压缩态理论详细研究了态|ψ( 2 )5〉q的广义非线性等阶 N次方 H压缩特性 .结果发... 本文构造了由多模真空态 |{ 0 j}〉q和多模虚相干态的相反态 |{ - i Zj}〉q这两者的线性叠加所组成的第 类两态叠加多模叠加态光场 |ψ( 2 )5〉q,利用多模压缩态理论详细研究了态|ψ( 2 )5〉q的广义非线性等阶 N次方 H压缩特性 .结果发现 :1 )态 |ψ( 2 )5〉q是一种典型的多模非经典光场 ;无论腔模总数 q与压缩阶数 N这两者之积 q· N取奇还是取偶 ,只要各模的初始相位之和 qj =1φj、态间的初始相位之差 (θ( I)nq- θ( o)0 q )等满足一定的量子化条件 ,态 |ψ( 2 )5〉q 总可分别呈现出周期性变化的、任意的奇数模 -奇数阶、奇数模 -偶数阶、偶数模 -偶数阶和偶数模 -奇数阶这四种不同形式的等阶 N次方 H压缩效应 .2 )上述四种不同形式的等阶 N次方 H压缩效应 ,其态间压缩条件完全相同 ,但模间压缩条件完全不同 ,结果使其压缩幅度、压缩结果和压缩特性等各不相同 .3 )无论 q· N取奇还是取偶 ,态 |ψ( 2 )5〉q的第一和第二这两个正交分量的等阶 N次方 展开更多
关键词 两态叠加 多模非经典光场 等阶N次方H压缩 奇数模-奇数阶等阶N次方H压缩 奇数模-偶数阶等阶N次方H压缩 偶数模-偶数阶等阶N次方H压缩 偶数模-奇数阶等阶N次方H压缩 量子光学 量子力学
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第V类两态叠加多模叠加态光场的广义非线性等阶N次方Y压缩 被引量:39
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作者 杨志勇 张书玲 +2 位作者 侯瑶 韩小卫 侯洵 《光子学报》 EI CAS CSCD 北大核心 2001年第6期641-650,共10页
本文构造了由多模真空态 |{ 0 j}〉q和多模虚相干态的相反态 |{ -i Zj}〉q 这两者的线性叠加所组成的第 V类两态叠加多模叠加态光场 |ψ( 2 )5〉q.利用多模压缩态理论 ,研究了态 |ψ( 2 )5〉q的广义非线性等阶 N次方 Y压缩特性 .结果发... 本文构造了由多模真空态 |{ 0 j}〉q和多模虚相干态的相反态 |{ -i Zj}〉q 这两者的线性叠加所组成的第 V类两态叠加多模叠加态光场 |ψ( 2 )5〉q.利用多模压缩态理论 ,研究了态 |ψ( 2 )5〉q的广义非线性等阶 N次方 Y压缩特性 .结果发现 :1 )态 |ψ( 2 )5〉q 是一种典型的多模非经典光场 ;无论压缩阶数 N取奇还是取偶 ,只要各模的初始相位φj( j=1 ,2 ,3 ,… ,… ,q)和态间的初始相位差 (θ( I)nq-θ( o)oq )等满足一定的取值条件 ,态 |ψ( 2 )5〉q 总可呈现出周期性变化的、任意奇数阶和任意偶数阶的广义非线性等阶 N次方 Y压缩效应 .2 )态 |ψ( 2 )5〉q所分别呈现的任意奇数阶和任意偶数阶的等阶 N次方 Y压缩效应 ,其压缩条件、压缩特征以及压缩程度和压缩深度等各不相同 .3 )无论压缩阶数 N取奇还是取偶 ,态 |ψ( 2 )5〉q的第一和第二这两个正交分量的等阶N次方 展开更多
关键词 两态叠加 多模非经典光场 多模振幅薛定谔猫态 等阶N次方Y压缩 光场
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煎炸时间与煎炸温度对花生油脂肪酸组成的影响 被引量:17
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作者 夏季亮 陈玎玎 吴晶 《中国油脂》 CAS CSCD 北大核心 2013年第7期76-81,共6页
研究了煎炸时间和煎炸温度对花生油脂肪酸组成的影响。结果表明:煎炸温度的升高与煎炸时间的延长都能导致花生油中的中碳链脂肪酸、奇数碳链脂肪酸和反式脂肪酸含量增加,同时导致多不饱和脂肪酸含量下降。在煎炸温度为150、180、210℃下... 研究了煎炸时间和煎炸温度对花生油脂肪酸组成的影响。结果表明:煎炸温度的升高与煎炸时间的延长都能导致花生油中的中碳链脂肪酸、奇数碳链脂肪酸和反式脂肪酸含量增加,同时导致多不饱和脂肪酸含量下降。在煎炸温度为150、180、210℃下,煎炸32 h后,花生油中饱和脂肪酸含量分别由未煎炸花生油中的15.41%增加至25.69%、28.71%、35.86%,单不饱和脂肪酸含量分别由未煎炸花生油中的44.75%增加至51.60%、52.82%、50.65%,多不饱和脂肪酸含量分别从未煎炸花生油中的39.81%下降至18.90%、14.10%、9.81%,相对不饱和度分别从未煎炸花生油中的5.49下降至2.74、2.33、1.69。 展开更多
关键词 煎炸 花生油 中碳链脂肪酸 奇数碳链脂肪酸 反式脂肪酸 相对不饱和度
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中医哲学的数学原理 被引量:10
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作者 王全年 吴世彩 李秀美 《中华中医药杂志》 CAS CSCD 北大核心 2019年第1期65-68,共4页
中医哲学潜在着透视宇宙万物演化统一的规律:宇宙万物以"通天一气"的元气为物质演化最终本原物质;宇宙任何相对独立的演化单元均围绕一个"中心"以"一阴一阳之谓道"向两个对待方向而演化;以"四象三元... 中医哲学潜在着透视宇宙万物演化统一的规律:宇宙万物以"通天一气"的元气为物质演化最终本原物质;宇宙任何相对独立的演化单元均围绕一个"中心"以"一阴一阳之谓道"向两个对待方向而演化;以"四象三元"为演化统一模式;以象数偶数律演化公式演化其象、象类奇数律演化公式演化其类,揭示了宇宙万物"象偶类奇"的演化同构规律。中医理论是以宇宙演化同构律提供的数学原理进行理论发生与构架的中医证的演化符合宇宙演化同构律。 展开更多
关键词 中医哲学 宇宙演化同构律 偶数律演化公式 奇数律演化公式
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第种非对称两态叠加多模光场的N次方H奇数压缩 被引量:7
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作者 韩小卫 曹大刚 +1 位作者 田来科 赵佩 《西北大学学报(自然科学版)》 CAS CSCD 北大核心 2002年第5期486-488,共3页
研究了态|Ψ(ab)I〉q的等幂次N次方H压缩特性。结果发现:当腔模总数q与压缩幂次数N这两者之积为奇数时,态|Ψ(ab)I〉q的第一或第二正交分量在一定条件下总可分别呈现出周期性变化的奇数模-奇次幂的N次方H压缩效应。
关键词 多模叠加态光场 压缩效应 奇数模-奇数次幂的N次方H压缩
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κ-卡拉胶固相酸降解及其寡糖结构分析 被引量:2
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作者 郝翠 于广利 +5 位作者 赵峡 杨波 李广生 郇培 郝杰杰 曾洋洋 《中国海洋大学学报(自然科学版)》 CAS CSCD 北大核心 2010年第5期19-22,共4页
以κ-卡拉胶为原料,采用正交实验法建立了1种固相酸降解制备κ-卡拉胶寡糖方法。结果表明,当阳离子交换树脂(732#)用量为100 mg/mL、κ-卡拉胶的质量浓度为3%时,在60℃下降解3 h后,寡糖分布宽度较窄,经PAGE和电喷雾离子化质谱(ESI-MS)分... 以κ-卡拉胶为原料,采用正交实验法建立了1种固相酸降解制备κ-卡拉胶寡糖方法。结果表明,当阳离子交换树脂(732#)用量为100 mg/mL、κ-卡拉胶的质量浓度为3%时,在60℃下降解3 h后,寡糖分布宽度较窄,经PAGE和电喷雾离子化质谱(ESI-MS)分析,表明所得寡糖为聚合度小于25的系列奇数寡糖。 展开更多
关键词 固相酸降解 Κ-卡拉胶 奇数寡糖 结构
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中子照射法合成新型富勒烯C_(121) 被引量:2
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作者 陈振玲 屈力 +4 位作者 程悦 邢更妹 袁慧 赵宇亮 柴之芳 《核技术》 EI CAS CSCD 北大核心 2005年第2期101-104,共4页
利用反应堆中子照射富勒烯混合物 C60合成了新型 C121的三个同分异构体。实验结果表明较低的热快中子注量比率、原料照射前适当的氧化处理和较长的中子照射时间有利于 C121 的形成。此研究首次合成了 C121的三种同分异构体并且拓展了核... 利用反应堆中子照射富勒烯混合物 C60合成了新型 C121的三个同分异构体。实验结果表明较低的热快中子注量比率、原料照射前适当的氧化处理和较长的中子照射时间有利于 C121 的形成。此研究首次合成了 C121的三种同分异构体并且拓展了核技术的应用领域。 展开更多
关键词 C121 富勒烯 奇数高富勒烯 中子辐照
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五相容错式磁通切换永磁电机及其控制 被引量:38
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作者 赵文祥 唐建勋 +1 位作者 吉敬华 刘国海 《中国电机工程学报》 EI CSCD 北大核心 2015年第5期1229-1236,共8页
提出一种具有奇数转子极的新型五相容错式磁通切换永磁(fault-tolerant flux-switching permanent-magnet,FT-FSPM)电机。该电机结构通过引入容错齿设计,增强了各相之间的独立性,提高了电机容错性能。运用有限元方法,对所设计的10/19极F... 提出一种具有奇数转子极的新型五相容错式磁通切换永磁(fault-tolerant flux-switching permanent-magnet,FT-FSPM)电机。该电机结构通过引入容错齿设计,增强了各相之间的独立性,提高了电机容错性能。运用有限元方法,对所设计的10/19极FT-FSPM电机的磁场、气隙磁密、反电势及齿槽转矩等电磁性能进行计算,分析奇数转子极结构对反电势和齿槽转矩的影响。在此基础上,研究电机故障时的容错控制策略。运用电路、磁路瞬态联合仿真的方法,对电机的转矩进行计算,并设计加工了FT-FSPM实验样机,仿真和实验结果验证了理论分析的正确性。 展开更多
关键词 容错电机 容错控制 磁通切换 永磁电机 奇数转子极
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