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A Kind of Multiverse?Traces of a Forgotten Modernity Inside Yang Fudong’s Black and White Work
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作者 Mariagrazia Costantino 《Cultural and Religious Studies》 2025年第5期219-232,共14页
After graduating from the China Academy of Arts(Department of Oil Painting)in Hangzhou in 1995,Yang Fudong(1971)moved to Shanghai to work as a graphic designer.Inspired by his daily job in Pudong,he started producing ... After graduating from the China Academy of Arts(Department of Oil Painting)in Hangzhou in 1995,Yang Fudong(1971)moved to Shanghai to work as a graphic designer.Inspired by his daily job in Pudong,he started producing photographic series that closely resembled the advertising campaigns he worked on.Glossy images of stylish young people or dishevelled white collars in highly saturated colours,defined“intellectuals”in cryptic accompanying captions.Conversely,his body of work in black and white,almost entirely shot on 35mm film,portrays a suspended reality out of the historical time:a ghostly dimension akin to a drowsy vigil,a uchronia,an“estranged paradise”-to borrow the title of his earliest film set in Hangzhou.But it is Shanghai’s elusiveness and material relationship with the past that has contributed the most to form Yang’s trademark imagery and aesthetic.What he conjures up in his still and moving images,is a dimension with a distinctive oneiric quality,an“in-between”universe where all the circumstances are justified and have an inner logic,just like in dreams,or just like in the China of his childhood.The research of Yang Fudong is somewhat unique in the universe of contemporary Chinese art and sets him apart from a plethora of artists that have used the video in a much more“didactic”and quotational way.I will illustrate some specific aspects of his black and white body of work,trying to show how a certain self-orientalist trait can be interpreted as strategy to regain narrative agency and bring to the surface a series of removed instances:the main of which being,in my opinion,the fate of Shanghai’s(perhaps of China's Mainland in its ungraspable entirety?)modernity. 展开更多
关键词 multiverse China SHANGHAI multimedia art film PHOTOGRAPHY modernity ORIENTALISM Cultural Revolution
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Multiverse and the Time State 被引量:2
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作者 Khaled (Moh'd Khalaf) Suleiman Alnobani 《Journal of Energy and Power Engineering》 2017年第3期160-163,共4页
This article is not inspired by any religion or quantum many-worlds interpretation. The mathematics of multiverse is presented here. The mass operator was introduced earlier by Alnobani. This operator is used here to ... This article is not inspired by any religion or quantum many-worlds interpretation. The mathematics of multiverse is presented here. The mass operator was introduced earlier by Alnobani. This operator is used here to deduce the time state. It is found that time has four states and those four states are orthogonal. Time is the constitution of any verse. Time has direction. Every orthogonal direction of time belongs to a verse. Past and future belong to opposite directions of time and they are arbitrary. Other verses are there by their own and not a probabilities of any other verse and if any similarity it is only a coincidence. Among applications of this thesis is travelling through groups of galaxies, or more or less. 展开更多
关键词 TIME MASS multiverse.
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Multiverse Theory 被引量:1
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作者 Khaled 《Journal of Energy and Power Engineering》 2018年第4期186-191,共6页
In this paper it is answered why the imaginary number is not used in the equal operator presented earlier by Ahiobani. The life criterion is presented here. The concept of energy conservation is assumed to be held wit... In this paper it is answered why the imaginary number is not used in the equal operator presented earlier by Ahiobani. The life criterion is presented here. The concept of energy conservation is assumed to be held within the gates between verses. The Hamiltonian for entry is the some when exiting, this concept is discussed. Within this concept suvat equations are discussed. Ahiobani' s generalized factor is presented instead of Planck's constant as proportionality factor between energy and frequency. A closer physical look for multiverse mathematics as tensor product is performed. 展开更多
关键词 TIME MASS multiverse.
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Hidden Multiverse Extraterrestrial Super Civilizations 被引量:1
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作者 Alexander Alexandrovich Antonov 《Natural Science》 2017年第3期43-62,共20页
Theoretical and experimental evidence of physical reality of imaginary numbers using interpretation of Ohm’s law for electrical AC circuits proposed in 1897 by Steinmetz was presented. Other pieces of evidence are me... Theoretical and experimental evidence of physical reality of imaginary numbers using interpretation of Ohm’s law for electrical AC circuits proposed in 1897 by Steinmetz was presented. Other pieces of evidence are mentioned as well. The use of the general scientific principle of the physical reality of imaginary numbers allowed to prove that the relativistic formulas in the existing version of the special relativity theory are wrong, as well as to deny the principle of non-exceeding the speed of light and the hypothesis of monoverse. Corrected relativistic formulas are given and on their basis a theory of hidden Multiverse is proposed, parallel universes of which are mutually invisible. Using data obtained by the spacecrafts WMAP and Planck, it is proved that the hidden Multiverse has a quaternion structure, exists in the six-dimensional space, and forms Hyperverse together with other Multiverses. It is shown that the parallel universes of the hidden Multiverse are continuously drifting in multidimensional space, touch each other in many places and are even partially immersed in each other, forming portals. It is alleged that the search for extraterrestrial life in deep space is devoid of meaning, as you can even walk to the adjacent parallel universes through portals, which are anomalous zones on Earth. Moreover, extraterrestrial super civilizations have already found us long time ago and are located on Earth. The attempts to contact these super civilizations are meaningless as well, because such contacts are possible only at their wish. Consequently, to make the contacts possible, we need to convince super civilizations that human civilization is of interest to them and that it has a sufficiently high intelligence. It is shown how the human super intelligence over can be realized. 展开更多
关键词 Imaginary Numbers Special RELATIVITY Theory DARK Matter DARK Energy multiverse Hyperverse PORTALS CIVILIZATION Intelligence Technological Singularity
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Antimatter Multiverses 被引量:2
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作者 Ardeshir Irani 《Journal of High Energy Physics, Gravitation and Cosmology》 CAS 2022年第3期677-680,共4页
The probability of creating Antimatter Multiverses is the same as the probability of creating Matter Multiverses since the Laws of Physics do not differentiate between matter and antimatter. The interaction of Matter ... The probability of creating Antimatter Multiverses is the same as the probability of creating Matter Multiverses since the Laws of Physics do not differentiate between matter and antimatter. The interaction of Matter and Antimatter Multiverses would destroy all the lower dimensions of both Multiverses allowing only the higher dimensions of the bigger Multiverse to survive. Energy within the void builds both types of Multiverses. Entropy within the void ends the building process to send all the mass back into the original levels of the void as Energy that is continuously being exchanged between the void and the two kinds of Multiverses. 展开更多
关键词 Antimatter multiverses Matter multiverses VOID Two Kinds of multiverses
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Hypothesis of the Hidden Multiverse Explains Dark Matter and Dark Energy 被引量:5
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作者 Alexander Alexandrovich Antonov 《Journal of Modern Physics》 2016年第10期1228-1246,共20页
Analysis of WMAP and Planck spacecraft data has proved that we live in an invisible Multiverse, referred to as hidden, that has a quaternion structure. It explains the reason for the mutual invisibility of parallel un... Analysis of WMAP and Planck spacecraft data has proved that we live in an invisible Multiverse, referred to as hidden, that has a quaternion structure. It explains the reason for the mutual invisibility of parallel universes contained in the hidden Multiverse. It is shown that the hidden Multiverse includes most likely twenty parallel universes from different dimensions, six of which are adjacent to our universe. Besides, edges of the hidden Multiverse are connected to other (from one to four) Multiverses, which are observable neither by electromagnetic nor by gravitational manifestations. The Multiverse described contains four matter-antimatter pairs, annihilation of which is prevented by relative spatial position of the universes. The experimental proof of existence of the hidden Multiverse is explained to be the phenomenon of dark matter and dark energy that correspond to other invisible parallel universes, except ours, included in the hidden Multiverse. General scientific principle of physical reality of imaginary numbers, refuting some of the statements of the existing version of the special theory of relativity, is a physical and mathematical foundation of the outlined conception of the hidden Multiverse. The article presents relativistic formulas of the theory of special relativity adjusted in accordance with the principle. It also offers appropriate interpretation of multidimensional space of the hidden Multiverse. 展开更多
关键词 multiverse Imaginary Numbers Dark Matter Dark Energy Special Theory of Relativity
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Dark Energy, Dark Matter, and the Multiverse 被引量:1
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作者 Ardeshir Irani 《Journal of High Energy Physics, Gravitation and Cosmology》 2021年第1期172-190,共19页
Our third spatial dimension (3-D) is currently in the process of building the fourth spatial dimension. Dark Energy is being used to create higher dimensions of space from the first to the nth, and it is also responsi... Our third spatial dimension (3-D) is currently in the process of building the fourth spatial dimension. Dark Energy is being used to create higher dimensions of space from the first to the nth, and it is also responsible for the formation and the rotation of the fourth dimension from the point singularities of the vacuum space of the third dimension. To start the creation up to the nth dimension, <i>n</i>! zero dimensional singularities arise simultaneously from the <i>n</i> = 0 level of the void. Once the creation of an n dimensional ellipsoidal matter Universe has been completed, the outward Dark Energy force ends, and then the inward force of gravity takes over to crush the n dimensional Universe into the center of the nth dimensional singularity of the void. The system is now in a non-equilibrium state because the entropy of the system has attained its lowest possible value. To bring the system back to equilibrium there will arise out of the nth dimensional void an antimatter Universe which will reverse the process to deposit all the Dark Energy back into the original levels of the void so that the net change in entropy of the system becomes zero. Dark Matter is the matter that exists in the fourth spatial dimension as 4-D matter spewed there through the Black Hole singularities of our third dimension. Ellipsoidal matter and antimatter Multiverses rotating in opposite directions are a natural byproduct of this new theory of Physics which also solves certain particle Physics problems of the Standard Model. 展开更多
关键词 Dark Energy Dark Matter multiverse ANTIMATTER ENTROPY Particle Physics
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The Void and the Multiverse 被引量:2
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作者 Ardeshir Irani 《Journal of High Energy Physics, Gravitation and Cosmology》 2022年第2期254-258,共5页
The Void is different from the vacuum space of our Universe because it has “nothing” in it, no space, no time, no mass, and no charge. It only has Pure Energy. The only particles that have no space, no time, no mass... The Void is different from the vacuum space of our Universe because it has “nothing” in it, no space, no time, no mass, and no charge. It only has Pure Energy. The only particles that have no space, no time, no mass, and no charge are photons and hence the Void is filled with photons of different Energy levels separated from one another by quantum numbers n. The Energy from within the Void is the source of all creation and annihilation. Each Universe of the Multiverse is created in parts that are joined together by gravity. Dark (Photon) Energy creates one part of the first dimension, two parts of the second dimension, three parts of the third dimension, four parts of the fourth dimension and so on, parts that are brought together to complete the formation of that dimensional Universe by means of a Big Bang;just as the Big Bang brought 3, 3-D parts created by 3, 2-D Universes together to form our 3-D Universe. 展开更多
关键词 The Void The multiverse Pure Energy GRAVITY
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Multiverse Spacetime 被引量:2
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作者 K_haled (Moh'dKhalaf) Suleiman Alnobani 《Journal of Energy and Power Engineering》 2017年第9期584-588,共5页
A theological train of reasoning is avoided in this paper. The properties of the equal operator presented earlier by Alnobani are given here. A view of the present time is given. As a consequence of the presence of ti... A theological train of reasoning is avoided in this paper. The properties of the equal operator presented earlier by Alnobani are given here. A view of the present time is given. As a consequence of the presence of time state, the verses are arranged in couples and every verse including in which we live is a live verse in the same context of human life. This paper interferes with and changes the procedures and philosophy of mathematics itself. Space, mass and time are parts of one whole which is called simply time. The aim of this paper is to make the knowledge of its subject public, so other researchers can contribute to it. The concept of a gate between verses is investigated. 展开更多
关键词 TIME SPACE multiverse gate.
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Amalgamated Geometric Structure of the Local Multiverse 被引量:1
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作者 Igor Yu Potemine 《Journal of High Energy Physics, Gravitation and Cosmology》 2021年第4期1213-1218,共6页
We consider <i>multiverses</i> as time-amalgamated multiply warped products of Lorentzian (Einstein) manifolds. We define the Local Multiverse as a time-connected component associated with our physical (3 ... We consider <i>multiverses</i> as time-amalgamated multiply warped products of Lorentzian (Einstein) manifolds. We define the Local Multiverse as a time-connected component associated with our physical (3 + 1)-spacetime. It is a collection of “parallel universes” with (mutually) synchronized timelines. Metaphysical considerations suggest that the Local Multiverse could be an extremely complex agglomeration with, at least, several hundred parallel universes in the Solar neighbourhood (and many thousands in galaxy bulks). In this paper we study a simplified time-almagamated globally hyperbolic model. Our picture implies the multiversality of elementary particles which are, actually, transcosmic (super)strings with multiple endpoints on parallel universes considered as D-branes. 展开更多
关键词 Einstein Manifold Lorentzian Manifold multiverse
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Derivation of Multiverse from Universal Wave Function Interpretation of String Theory
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作者 Zhi Gang Sha Rulin Xiu 《Journal of Physical Science and Application》 2017年第6期1-5,共5页
The multiverse is a hypothesis created to solve certain problems in cosmology. Currently, this scheme is still largely ad hoc, rather than derived from fundamental laws and principles. Because of this, the predictive ... The multiverse is a hypothesis created to solve certain problems in cosmology. Currently, this scheme is still largely ad hoc, rather than derived from fundamental laws and principles. Because of this, the predictive power of this theory is rather limited. Furthermore, there are concerns that this theory will make it impossible to calculate some measured quantities, such as the masses of quarks and the electron. In this paper, we will show that a new development in string theory, the universal wave function interpretation of string theory, provides a way to derive the mathematical expression of the multiverse. We will demonstrate that the Weyl invariance existing in string theory indicates that our observed universe is a projection from a hologram. We will present how the laws of physics can be derived from this fact. Furthermore, we suggest it may also provide a way to calculate the masses of fundamental particles such as quarks and the electron. 展开更多
关键词 String theory multiverse grand unification theory cosmology holographic universe universal wave function interpretation of string theory.
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The Reversible Cyclic Universe in the Reversible Multiverse and the Reversible String Theory
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作者 Ding-Yu Chung 《Journal of Modern Physics》 2015年第9期1249-1260,共12页
The paper posits that the multiverse is reversible, so all universes in the multiverse are reversible cyclic universes which have the inexhaustible resources of space-time to expand. The collision of expanding univers... The paper posits that the multiverse is reversible, so all universes in the multiverse are reversible cyclic universes which have the inexhaustible resources of space-time to expand. The collision of expanding universes is permanently irreversible, forbidden in the reversible multiverse, so every universe is surrounded by the zero-energy interuniversal void as the permanent gap among universes to keep universes apart. A zero-sum energy dual universe of positive energy universe and negative energy universe can be created in the interuniversal void, and the new dual universe is again surrounded by the interuniversal void. This paper also posits the reversible string theory with oscillating space-time dimension number oscillating between 11D (space-time dimension) and 4D without the conventional compactization of string. Dimension number decreases with decreasing speed of light, decreasing vacuum energy, and increasing rest mass. The 4D and the 11D have zero and the highest vacuum energies, respectively. The universes in the reversible multiverse oscillate reversibly between high and low dimension numbers. Under symmetry breaking as in our universe, the positive energy universe as our observed universe absorbed the interuniversal void, while the negative energy universe did not. The interuniversal void has zero vacuum energy, so the absorption of the interuniversal void by the positive energy universe forced the positive energy 10D universe with high vacuum energy to be transformed into the positive energy 4D universe with zero vacuum energy, resulting in the inflation followed by the Big Bang. The negative energy universe undergoes dimension number oscillation between 4D and 10D dimension by dimension. The negative energy >4D universe is hidden, and the negative energy 4D universe appears as dark energy. The calculated percentages of dark energy, dark matter, and baryonic matter and the calculated time for dark energy to start are in good agreements with the observed values. 展开更多
关键词 CYCLIC UNIVERSE multiverse Interuniversal Void String Theory Cosmology Big Bang INFLATION DARK Energy DARK Matter
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Multiverse/Hyperverse Models: (4 + 1)-Dimensional Landscape (Black Saturns, Bousso-Hawking Nucleation, Gogberashvili Multiverses, Schwarzschild-De Sitter Nurseries) and a (3 + 1)-Dimensional Model for Dark Energy
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作者 Igor Yu. Potemine Werner Krause 《Journal of High Energy Physics, Gravitation and Cosmology》 CAS 2024年第4期1866-1877,共12页
We consider the Hyperverse as a collection of multiverses in a (4 + 1)-dimensional spacetime with gravitational constant G. Multiverses in our model are bouquets of thin shells (with synchronized intrinsic times). If ... We consider the Hyperverse as a collection of multiverses in a (4 + 1)-dimensional spacetime with gravitational constant G. Multiverses in our model are bouquets of thin shells (with synchronized intrinsic times). If gis the gravitational constant of a shell Sand εits thickness, then G~εg. The physical universe is supposed to be one of those thin shells inside the local bouquet called Local Multiverse. Other remarkable objects of the Hyperverse are supposed to be black holes, black lenses, black rings and (generalized) Black Saturns. In addition, Schwarzschild-de Sitter multiversal nurseries can be hidden inside those Black Saturns, leading to their Bousso-Hawking nucleation. It also suggests that black holes in our physical universe might harbor embedded (2 + 1)-dimensional multiverses. This is compatible with outstanding ideas and results of Bekenstein, Hawking-Vaz and Corda about “black holes as atoms” and the condensation of matter on “apparent horizons”. It allows us to formulate conjecture 12.1 about the origin of the Local Multiverse. As an alternative model, we examine spacetime warping of our universe by external universes. It gives data for the accelerated expansion and the cosmological constant Λ, which are in agreement with observation, thus opening a possibility for verification of the multiverse model. 展开更多
关键词 5-Dimensional Gravity Black Hole Black Saturn Cosmological Constant Dark Energy multiverse Spacetime Warping Thin Shell
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Hyperverse, 5-Dimensional Gravity and Multiverses as Nested Gogberashvili Shells
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作者 Igor Yu. Potemine 《Journal of High Energy Physics, Gravitation and Cosmology》 CAS 2022年第4期983-989,共7页
We consider the Hyperverse as a collection of multiverses in 5-dimensional spacetime with gravitational constant G. Each multiverse in our simplified model is a bouquet of nested spherical Gogberashvili shells. If g&l... We consider the Hyperverse as a collection of multiverses in 5-dimensional spacetime with gravitational constant G. Each multiverse in our simplified model is a bouquet of nested spherical Gogberashvili shells. If g<sub>k</sub> is the gravitational constant of a thin shell S<sub>k</sub> and ε<sub>k</sub>, its thickness then G ~ ε<sub>k</sub>g<sub>k</sub>. The physical universe is supposed to be one of those shells inside the local nested bouquet called Local Multiverse. We relate this construction to Robinson-Trautman metrics describing expanding spacetimes with spherical gravitational waves. Supermassive astronomical black holes, located at cores of elliptic/spiral galaxies, are also conjecturally described within this theory. Our constructions are equally consistent with the modern theory of cosmological coupling. 展开更多
关键词 5-Dimensional Gravity Black Hole multiverse Spherical Shell
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Multiverse Model: External Universe(s) as Source of Dark Energy
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作者 Werner Krause 《Journal of High Energy Physics, Gravitation and Cosmology》 2021年第4期1306-1314,共9页
The Lambda Cold Dark Matter (ΛCDM) model is currently the best model to describe the development of the Universe from the Big Bang to the present time. It is composed of six parameters, two of them, Dark Energy (DE) ... The Lambda Cold Dark Matter (ΛCDM) model is currently the best model to describe the development of the Universe from the Big Bang to the present time. It is composed of six parameters, two of them, Dark Energy (DE) and CDM, with unknown physical explanations. DE, leading to accelerated expansion of the Universe, is considered a scalar field characterized by exerting its force by repulsive gravity. We examined whether DE can be explained as the warping of spacetime in our Universe by external universes as components of a Multiverse or, in other words, as the gravitational pull exerted by other universes. The acceleration, the resultant kinetic energy, E<sub>kin</sub>, and the cosmological constant, Λ, were calculated for one to four external universes. The acceleration is approx. 10<sup>-11</sup> m/s<sup>2</sup>, which is in agreement with observations. Its value is dependent upon the numbers and relative positions of external universes. DE density is approx. 10<sup>-29</sup> kg/m<sup>3</sup> and Λ is in the range of 10<sup>-38</sup> s<sup>-2</sup> and 10<sup>-55</sup> m<sup>-2</sup>, respectively. Warping of spacetime by external universes as a physical explanation for DE seems feasible and warrants further considerations. 展开更多
关键词 Accelerated Expansion of the Universe Dark Energy Gravitational Pull Warping of Spacetime multiverse
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Multiverse Fundamental Equation
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作者 Khaled(Moh’d Khalaf)Suleiman Alnobani 《Journal of Energy and Power Engineering》 2019年第5期205-208,共4页
A discussion of nature is given.Time is discussed with respect to certain other factors of nature.A potential energy equation is given which holds all relevant information about any system at equilibrium or non-equili... A discussion of nature is given.Time is discussed with respect to certain other factors of nature.A potential energy equation is given which holds all relevant information about any system at equilibrium or non-equilibrium state with no restriction on number of phases.A differential form of the fundamental equation is also given,and it gives the amount of energy released if one or more of the variables are changed.The states of different distances in coupled verses are derived.There is no system of measurements outside the human mind,every verse calculates dynamically for itself.Vessel design using sub-verses and gates is discussed.The fundamental equation has important application for human self-development(martial arts). 展开更多
关键词 TIME MASS multiverse
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自动化物流生产线故障诊断虚拟仿真教学系统研究
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作者 王珊珊 《自动化与仪器仪表》 2025年第5期211-217,共7页
为提升自动化物流生产线故障诊断准确率,辅助学生快速掌握故障诊断知识与流程,为相关技术人员培养提供支持。提出基于多元宇宙优化算法(MVO)-概率神经网络(PNN)的故障诊断方法,并将其应用于故障诊断虚拟仿真教学系统。通过MVO对PNN平滑... 为提升自动化物流生产线故障诊断准确率,辅助学生快速掌握故障诊断知识与流程,为相关技术人员培养提供支持。提出基于多元宇宙优化算法(MVO)-概率神经网络(PNN)的故障诊断方法,并将其应用于故障诊断虚拟仿真教学系统。通过MVO对PNN平滑因子进行优化,构建故障诊断模型。详细阐述了MVO与PNN的优化融合过程,包括参数初始化、宇宙膨胀率计算、虫洞机制下的变量更新等步骤。在虚拟仿真教学系统中,设计了故障数据库、教学培训、故障诊断等功能模块。实验结果表明:在算法验证方面,MVO-PNN故障诊断模型在训练集与测试集上准确率达98.76%,验证集准确率为96.67%,显著优于标准PNN模型和PSO-PNN模型。在教学效果上,学生对故障诊断知识掌握程度平均提升15%,实际操作考核平均成绩从70分提高到85分,故障诊断任务平均完成时间从30分钟缩短至20分钟,达到了辅助学生快速掌握故障诊断知识与流程的目的。 展开更多
关键词 故障诊断 自动化物流 虚拟仿真 教学系统 概率神经网络 多元宇宙优化算法
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多反向学习机制的多元宇宙算法
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作者 李克文 崔雪丽 +1 位作者 李国庆 牛小楠 《计算机仿真》 2025年第5期270-278,共9页
针对多元宇宙优化算法(MVO)收敛速度慢、寻优精度低和易陷入局部最优的问题,提出了一种多反向学习机制的元宇宙优化算法(MOBLMVO)。使用佳点集初始化种群,使初始种群覆盖更加均匀;加入整体性随机引导策略,增强全局搜索能力;最后,提出多... 针对多元宇宙优化算法(MVO)收敛速度慢、寻优精度低和易陷入局部最优的问题,提出了一种多反向学习机制的元宇宙优化算法(MOBLMVO)。使用佳点集初始化种群,使初始种群覆盖更加均匀;加入整体性随机引导策略,增强全局搜索能力;最后,提出多反向学习机制,根据个体适应度选择适当的反向学习策略,增强种群多样性,避免陷入局部最优,使算法更快收敛。本文选取12个基准测试函数与主流优化算法上进行比较实验,结果表明,所提算法的平均寻优精度、标准差、收敛曲线以及稳定性均优于对比算法,并进行Wilcoxon秩和检验,检验结果显示所提算法与对比算法的差异性显著。 展开更多
关键词 多元宇宙优化算法 群智能优化算法 佳点集 整体性随机引导 反向学习
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基于互补集合经验模态分解的相位敏感光时域反射计系统降噪方法 被引量:1
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作者 岳新博 高旭 +2 位作者 高阳 王海涛 鲁秀娥 《红外与激光工程》 北大核心 2025年第2期134-148,共15页
为了提高相位敏感光时域反射计(Φ-OTDR)系统测量振动信号信噪比,提出了一种基于互补集合经验模态分解(CEEMD)的新型去噪方法。CEEMD算法对数字正交(I/Q)解调算法获取的瑞利后项散射光幅值信号和相位信号进行分解,经多尺度排列熵(MPE)... 为了提高相位敏感光时域反射计(Φ-OTDR)系统测量振动信号信噪比,提出了一种基于互补集合经验模态分解(CEEMD)的新型去噪方法。CEEMD算法对数字正交(I/Q)解调算法获取的瑞利后项散射光幅值信号和相位信号进行分解,经多尺度排列熵(MPE)算法筛选后,通过改进的小波阈值算法进行去噪,并设计采用多元宇宙优化(MVO)算法对参数进行优化。实际搭建了外差式Φ-OTDR系统,经仿真和实际测试验证文中算法有效性。最后,将设计算法与以往的经验模态分解-皮尔逊相关系数(EMD-PCC)、自适应噪声完备集合经验模态分解(CEEMDAN)及变分模态分解-改进小波阈值(VMD-NWT)去噪方法进行了对比。结果表明,在10.14 km的传感光纤位置上,该方法对于低频10 Hz、中频200 Hz以及高频1 200 Hz的振动事件,其位置信息信噪比分别可达8.88、30.26、11.90 dB,对不同频率段的振动信号均具备有效的去噪能力,且系统定位精度更高。该方法在提高系统信噪比的同时,成功地对振动信号进行了解调,且解调效果比其他三种算法效果更好,为Φ-OTDR系统降噪研究提供了新思路。 展开更多
关键词 相位敏感光时域反射仪 互补集合经验模态分解算法 多尺度排列熵 改进的小波阈值算法 多元宇宙优化算法
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基于多元宇宙优化算法的带式输送机智能控制系统研究
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作者 张润华 孟巧荣 +2 位作者 辛佳龙 张琛 马志坤 《矿业研究与开发》 北大核心 2025年第9期176-183,共8页
为实现龙泉煤矿4205工作面采区巷道带式输送机的煤流均衡控制及节能提效的目标,通过建立该带式输送机的数学模型,采用多元宇宙算法(MVO)优化模糊PID控制器,并基于MATLAB进行仿真与现场实际数据对比验证。结果表明:(1)相较于传统PID控制,... 为实现龙泉煤矿4205工作面采区巷道带式输送机的煤流均衡控制及节能提效的目标,通过建立该带式输送机的数学模型,采用多元宇宙算法(MVO)优化模糊PID控制器,并基于MATLAB进行仿真与现场实际数据对比验证。结果表明:(1)相较于传统PID控制,MVO算法优化模糊PID控制使调节时间和超调量分别下降了46.4%和34.49个百分点,适应度值从初始迭代的1 022收敛至901.8,表明系统的响应速度、稳定性和抗干扰能力显著提升;(2)对比分析带式输送机上5个时间段300 s内带式输送机的实际带速与MVO-Fuzzy-PID的调控带速,验证调控带速能更准确地接近设定值;(3)从功率角度分析,MVO-Fuzzy-PID调控后所对应的电动机总功率显著降低。因此,MVO算法优化带速实现了节能控制与煤流量快速匹配。 展开更多
关键词 带式输送机 智能控制 多元宇宙优化算法 带速
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