http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Suying Pan,Zhiyong Ye,Jin Zhou 제어·로봇·시스템학회 2020 International Journal of Control, Automation, and Vol.18 No.2
This paper is concerned with the problem of fault detection filtering for a class of nonhomogeneous Markov jump systems with randomly occurring sensor saturations, where it is assumed that sensor saturation is randomly occur satisfying the Bernoulli distribution, meanwhile transition probabilities in nonhomogeneous Markov chain are time-varying. By employing the suitable Lyapunov technique in combination with Linear Matrix Inequalities (LMIs), some sufficient criteria are derived to guarantee that the augmented system is mean square stochastically stable with an H∞ performance level. Finally, a representative example of industrial stirred tank reactor systems is presented to illustrate the theoretical results, and it then turns out that the feasible filtering parameters can be exactly fixed by Matlab Tool Box, and the H∞ performance of the system can be fully guaranteed by the proposed control strategy.
Gamma ray attenuation behaviors and mechanism of boron rich slag/epoxy resin shielding composites
Mengge Dong,Suying Zhou,He Yang,Xiangxin Xue Korean Nuclear Society 2023 Nuclear Engineering and Technology Vol.55 No.7
Excellent thermal neutron absorption performance of boron expands the potential use of boron rich slag to prepare epoxy resin matrix nuclear shielding composites. However, shielding attenuation behaviors and mechanism of the composites against gamma rays are unclear. Based on the radiation protection theory, Phy-X/PSD, XCOM, and <sup>60</sup>Co gamma ray source were integrated to obtain the shielding parameters of boron rich slag/epoxy resin composites at 0.015-15 MeV, which include mass attenuation coefficient (µ<sub>t</sub>), linear attenuation coefficient (µ), half value thickness layer (HVL), electron density (N<sub>eff</sub>), effective atomic number (Z<sub>eff</sub>), exposure buildup factor (EBF) and exposure absorption buildup factor (EABF).µ<sub>t</sub>, µ, HVL, N<sub>eff</sub>, Z<sub>eff</sub>, EBF and EABF are 0.02-7 cm<sup>2</sup>/g, 0.04-17 cm<sup>-1</sup>, 0.045-20 cm, 5-14, 3 × 10<sup>23</sup>-8 × 10<sup>23</sup> electron/g, 0-2000, and 0-3500. Shielding performance is BS4, BS3, BS3, BS1 in descending order, but worse than ordinary concrete. µ and HVL of BS1-BS4 for <sup>60</sup>Co gamma ray is 0.095-0.110 cm<sup>-1</sup> and 6.3-7.2 cm. Shielding mechanism is main interactions for attenuation gamma ray by BS1-BS4 are elements with higher content or higher atomic number via Photoelectric Absorption at low energy range, and elements with higher content via Compton Scattering and Pair Production in Nuclear Field at middle and higher energy range.