Importance analysis quantifies the critical degree of individual component. Compared with the traditional binary state system,importance analysis of the multi-state system is more aligned with the practice. Because th...Importance analysis quantifies the critical degree of individual component. Compared with the traditional binary state system,importance analysis of the multi-state system is more aligned with the practice. Because the multi-valued decision diagram( MDD) can reflect the relationship between the components and the system state bilaterally, it was introduced into the reliability calculation of the multi-state system( MSS). The building method,simplified criteria,and path search and probability algorithm of MSS structure function MDD were given,and the reliability of the system was calculated. The computing methods of importance based on MDD and direct partial logic derivatives( DPLD) were presented. The diesel engine fuel supply system was taken as an example to illustrate the proposed method. The results show that not only the probability of the system in each state can be easily obtained,but also the influence degree of each component and its state on the system reliability can be obtained,which is conducive to the condition monitoring and structure optimization of the system.展开更多
Optical directed logic(DL)is a novel logic operation scheme that employs electrical signals as operands to control the working states of optical switches to perform the logic functions.This review first provides an ov...Optical directed logic(DL)is a novel logic operation scheme that employs electrical signals as operands to control the working states of optical switches to perform the logic functions.This review first provides an overview of the concept and working principle of DL.The developing trends of DL computing are then discussed in detail,including the fundamental optical DL gates,combinational optical DL operations,reconfigurable logic computing,low power optical logic computing,and programmable photonic network.The concluding remarks provide an outlook on the DL future development and its impacts in optical computing.展开更多
基金National Natural Science Foundation of China(No.61164009)the Science and Technology Research Project,Department of Education of Jiangxi Province,China(No.GJJ14420)Natural Science Foundation of Jiangxi Province,China(No.20132BAB206026)
文摘Importance analysis quantifies the critical degree of individual component. Compared with the traditional binary state system,importance analysis of the multi-state system is more aligned with the practice. Because the multi-valued decision diagram( MDD) can reflect the relationship between the components and the system state bilaterally, it was introduced into the reliability calculation of the multi-state system( MSS). The building method,simplified criteria,and path search and probability algorithm of MSS structure function MDD were given,and the reliability of the system was calculated. The computing methods of importance based on MDD and direct partial logic derivatives( DPLD) were presented. The diesel engine fuel supply system was taken as an example to illustrate the proposed method. The results show that not only the probability of the system in each state can be easily obtained,but also the influence degree of each component and its state on the system reliability can be obtained,which is conducive to the condition monitoring and structure optimization of the system.
基金This work was partially supported by the National Key R&D Program of China(No.2019YFB2205204)the Open Project Program of Wuhan National Laboratory for Optoelectronics(No.2019WNLOKF003)+1 种基金the“Shuguang Program”supported by the Shanghai Education Development Foundation and Shanghai Municipal Education Commission,the Fundamental Research Funds for the Central Universities(No.lzujbky-2021-pd11)the National Natural Science Foundation of China(Grant Nos.61875120 and 62075091).
文摘Optical directed logic(DL)is a novel logic operation scheme that employs electrical signals as operands to control the working states of optical switches to perform the logic functions.This review first provides an overview of the concept and working principle of DL.The developing trends of DL computing are then discussed in detail,including the fundamental optical DL gates,combinational optical DL operations,reconfigurable logic computing,low power optical logic computing,and programmable photonic network.The concluding remarks provide an outlook on the DL future development and its impacts in optical computing.
