火电机组再热汽温时间序列的混沌特性分析
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摘要
根据混沌理论及其相关的研究方法,针对某火电机组再热汽温数据序列资料,通过相空间重构技术计算表征其特征的参数———关联维数和最大Lyapunov指数,揭示了再热汽温变化的混沌动力学特性,为建立再热汽温模型及再热汽温精确预测提供了新的思路。
Based on chaotic theory and related research methods, and directing against data sequence materials of reheated steam tempe-rature for one thermal powergeneration unit, the parameters, such as correlational dimensions and the max. Lyapunov index, representing characteristics of the reheated steam have been calculated by using the phasespace rebuilding technology, the chaotic dynamics performance of the reheated steam temperature being revealed, providing new thinking for establishing the reheated steam temperature model and for accurate prediction of the said temperature.
Based on chaotic theory and related research methods, and directing against data sequence materials of reheated steam tempe-rature for one thermal powergeneration unit, the parameters, such as correlational dimensions and the max. Lyapunov index, representing characteristics of the reheated steam have been calculated by using the phasespace rebuilding technology, the chaotic dynamics performance of the reheated steam temperature being revealed, providing new thinking for establishing the reheated steam temperature model and for accurate prediction of the said temperature.
引文
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[2] LiebertW,SchusterHG.Properchoiceofthetimedelay fortheanalysisofchaotictimeseries[J].PhysLettA,1989,141:386390.
[3] M.T.Rosenstein,J.J.CollinsandC.J.Deluca.Recon structionexpansionasageometrybasedframeworkfor choosingproperdelaytimes[J].PhysicaD,1994,73:8298.
[4] 林嘉宇,王跃科,黄芝平,等.语音信号相空间重构中的时间延迟的选择———复自相关法[J].信号处理,1999,15(3):220225.
[5] P.Grassberger,I.Procaccia.Measuringthestrangenessof strangeattractors[J].PhysicalD,1983,(9):189208.
[6] KennelMB,BrownR,AbarbanelHDI.Determiningem beddingdimensionforphasespacereconstructionusing geometricalconstructionp[J].PhyRevA,1992,45(6):34033411.
[7] FraserAM.Informationandentropyinstrangeattract ors[J].IEEETrans.onIT,1989,IT35(2):245262.
[8] M.T.Rosenstein,J.J.CollinsandC.J.Deluca.Aprac ticalMethodforcalculatinglargestLyapunovexponents fromsmalldatasets[J].PyhisicaD,1993,65:117234.
[9] 郑兆宓,张军,汪秉宏.最大Lyapunov指数计算的几种方法[J].地震,1994,(4):8692.
[10]A.Wolf.J.B.Swift,H.L.SwinneyandJ.A.Vastano.DeterminingLyapunovexponentsfromatimeseries,PhysicaD,1985:285317.
[11]G.BaranaandI.Tsuda.Anewmethodforcomputing Lyapunovexponents[J].Phys.Lett.A,1990,175:421427.
[12]谢新民,丁锋.自适应控制系统[M].北京:清华大学出版社,2002.
[13]方锦清.驾驭混沌与发展高新技术[M].北京:原子能出版社,2002.
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