排序方式: 共有3条查询结果,搜索用时 15 毫秒
1
1.
2.
A new ternary van der Waals complex of the type rare gas-rare gas'-linear molecule, ArNe-N2O, was investigated using a pulsed molecular beam cavity Fourier transform microwave spectrometer. The rotational spectra of six isotopomers of the trimer were studied in detail. These include Ar20Ne-14N14NO, Ar22Ne-14N14NO, Ar20Ne-15N14NO, Ar22Ne-15N14N0, Ar20Ne-14N15NO and Ar22Ne-14N15NO. Nuclear quadrupole hyperfine structures of the rotational transitions that are due to the one or two 14N nuclei were resolved and analysed. The resulting spectroscopic constants were used to provide structural and dynamical information about the trimer. Based on the quartic centrifugal distortion constants, a harmonic force field analysis was performed to estimate the frequencies of the van der Waals vibrational modes. A perturbation of the electronic charge distribution at the site of the central 14N nucleus of N20 upon complex formation was detected and discussed. Differences of structural parameters of the trimer as compared to those of the respective dimer units are indicative of the presence of significant three-body non-additive contributions to the interaction energy. 相似文献
3.
CHOON KI AHN 《Pramana》2012,78(3):361-374
In this paper, we propose a new adaptive H¥\mathcal H_\infty synchronization strategy, called an adaptive fuzzy delayed feedback H¥\mathcal H_\infty synchronization (AFDFHS) strategy, for chaotic systems with uncertain parameters and external disturbances. Based on Lyapunov–Krasovskii
theory, Takagi–Sugeno (T–S) fuzzy model and adaptive delayed feedback H¥\mathcal H_\infty control scheme, the AFDFHS controller is presented such that the synchronization error system is asymptotically stable with
a guaranteed H¥\mathcal{H}_{\infty } performance. It is shown that the design of the AFDFHS controller with adaptive law can be achieved by solving a linear matrix
inequality (LMI), which can be easily facilitated by using some standard numerical packages. An illustrative example is given
to demonstrate the effectiveness of the proposed AFDFHS approach. 相似文献
1