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Optimal Design of Rectification Circuit in Electronic Circuit Fault Self-repair Based on EHW and RBT

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Chinese Journal of Electronics 2018年第1期27卷 93-101页

作者： ZHANG Junbin cai jinyan MENG Yafeng Department of Electronic and Optical Engineering Mechanical Engineering College Hypervelocity Aerodynamics Institute China Aerodynamics Research & Development Center

Reliability of traditional electronic circuit is improved mainly by redundant fault-tolerant technology with large hardware resource consumption and limited fault self-repair capability. In complicated environment,electronic circuit faults appear easily. If on-site immediate repair is not implemented, normal running of electronic system will be directly affected. In order to solve these problems, Evolvable hardware(EHW) technology is widely used. The conventional EHW has some *** optimal design of Rectification circuit(RTC) is further researched on the basis of the previously proposed fault self-repair based on EHW and Reparation balance technology(RBT). Fault sets are selected by fault danger degree and fault coverage rate. The optimal designed RTC can completely repair faults in the fault set. Simulation results prove that it has higher self-repair capability and less hardware resource.

关键词： Evolvable hardware(EHW) Fault self repair Reparation balance technology(RBT) Rectification circuit(RTC) Optimal design Fault coverage

Optimal design of RTCs in digital circuit fault self-repair based on global signal optimization

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Chinese Journal of Aeronautics 2016年第6期29卷 1774-1787页

作者： Zhang Junbin cai jinyan Meng Yafeng Department of Electronic and Optical Engineering Mechanical Engineering College

Since digital circuits have been widely and thoroughly applied in various fields, electronic systems are increasingly more complicated and require greater reliability. Faults may occur in electronic systems in complicated environments. If immediate field repairs are not made on the faults, electronic systems will not run normally, and this will lead to serious losses. The traditional method for improving system reliability based on redundant fault-tolerant technique has been unable to meet the requirements. Therefore, on the basis of(evolvable hardware)-based and(reparation balance technology)-based electronic circuit fault self-repair strategy proposed in our preliminary work, the optimal design of rectification circuits(RTCs) in electronic circuit fault self-repair based on global signal optimization is deeply researched in this paper. First of all, the basic theory of RTC optimal design based on global signal optimization is proposed. Secondly, relevant considerations and suitable ranges are analyzed. Then, the basic flow of RTC optimal design is researched. Eventually, a typical circuit is selected for simulation verification, and detailed simulated analysis is made on five circumstances that occur during RTC evolution. The simulation results prove that compared with the conventional design method based RTC, the global signal optimization design method based RTC is lower in hardware cost, faster in circuit evolution, higher in convergent precision, and higher in circuit evolution success rate. Therefore, the global signal optimization based RTC optimal design method applied in the electronic circuit fault self-repair technology is proven to be feasible, effective, and advantageous.

关键词： Evolutionary algorithm Evolvable hardware Fault self-repair Optimal design Reparation balance technology

A reliability evaluation method for embryonic cellular array based on Markov status graph model

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Journal of Systems Engineering and Electronics 2020年第2期31卷 432-446页

作者： WANG Tao cai jinyan MENG Yafeng ZHU Sai Department of Electronic and Optical Engineering Army Engineering UniversityShijiazhuang 050003China

Due to the limitations of the existing fault detection methods in the embryonic cellular array(ECA), the fault detection coverage cannot reach 100%. In order to evaluate the reliability of the ECA more accurately, embryonic cell and its input and output(I/O) resources are considered as a whole, named functional unit(FU). The FU fault detection coverage parameter is introduced to ECA reliability analysis, and a new ECA reliability evaluation method based on the Markov status graph model is *** experiment results indicate that the proposed ECA reliability evaluation method can evaluate the ECA reliability more effectively and accurately. Based on the proposed reliability evaluation method, the influence of parameters change on the ECA reliability is studied, and simulation experiment results show that ECA reliability can be improved by increasing the FU fault detection coverage and reducing the FU failure rate. In addition, by increasing the scale of the ECA, the reliability increases to the maximum first, and then it will decrease continuously. ECA reliability variation rules can not only provide theoretical guidance for the ECA optimization design, but also point out the direction for further research.

关键词： embryonic Markov status graph model reliability fault detection evaluation

Fault self-repair strategy based on evolvable hardware and reparation balance technology

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Chinese Journal of Aeronautics 2014年第5期27卷 1211-1222页

作者： Zhang Junbin cai jinyan Meng Yafeng Meng Tianzhen Department of Electronic and Optical Engineering Mechanical Engineering College

In the face of harsh natural environment applications such as earth-orbiting and deep space satellites, underwater sea vehicles, strong electromagnetic interference and temperature stress,the circuits faults appear easily. Circuit faults will inevitably lead to serious losses of availability or impeded mission success without self-repair over the mission duration. Traditional fault-repair methods based on redundant fault-tolerant technique are straightforward to implement, yet their area, power and weight cost can be excessive. Moreover they utilize all plug-in or component level circuits to realize redundant backup, such that their applicability is limited. Hence, a novel selfrepair technology based on evolvable hardware（EHW） and reparation balance technology（RBT） is proposed. Its cost is low, and fault self-repair of various circuits and devices can be realized through dynamic configuration. Making full use of the fault signals, correcting circuit can be found through EHW technique to realize the balance and compensation of the fault output-signals. In this paper, the self-repair model was analyzed which based on EHW and RBT technique, the specific self-repair strategy was studied, the corresponding self-repair circuit fault system was designed, and the typical faults were simulated and analyzed which combined with the actual electronic devices. Simulation results demonstrated that the proposed fault self-repair strategy was feasible. Compared to traditional techniques, fault self-repair based on EHW consumes fewer hardware resources, and the scope of fault self-repair was expanded significantly.

关键词： Evolutionary algorithm Evolvable hardware Fault Self-repair Fault-tolerant Genetic algorithm particle swarm optimization Reparation balance technology

Embryonic array configuration optimization method based on reliability and hardware consumption

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Chinese Journal of Aeronautics 2019年第3期32卷 639-652页

作者： Tao WANG jinyan cai Yafeng MENG Sai ZHU Department of Electronic and Optical Engineering Army Engineering University

Embryonic Array(EA) with different configuration methods will directly affect its reliability and hardware consumption. At present, EA configuration design is lack of quantitative analysis method. In order to reasonably optimize EA configuration design, an EA configuration optimization design method is proposed, which is based on the constraints of EA hardware consumption and reliability. Through the analysis of EA working process and composition, quantitative analysis of EA reliability and hardware consumption are completed. Based on the constraints of EA hardware consumption and reliability, the mathematical model of EA configuration optimization design is established, which transfers EA configuration optimization design into an integer nonlinear programming model problem. According to the difference of the fitness value of individual waiting for mutation in population, adaptive mutation operator and crossover operator are selected, and a novel Modified Adaptive Differential Evolution(MADE) algorithm is proposed,which is used to solve EA configuration optimization design problem. Simulation experiments and analysis indicate that the MADE is able to effectively improve the speed, accuracy and stability of algorithm. Moreover, the proposed EA configuration optimization design method can select the most reasonable EA configuration design, and play an important guiding role in EA optimization design.

关键词： Configuration optimization Differential evolution Embryonic electronic Hardware consumption Integer nonlinear programming model Reliability Self-repairing

Tailoring the adsorption behavior of superoxide intermediates on nickel carbide enables high-rate Li-O_(2) batteries

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eScience 2022年第4期2卷 389-398页

作者： Yun Liu jinyan cai Jianbin Zhou Yipeng Zang Xusheng Zheng Zixuan Zhu Bo Liu Gongming Wang Yitai Qian Hefei National Research Center for Physical Sciences at the Microscale and Department of Chemistry University of Science&Technology of ChinaHefeiAnhui230026PR China National Synchrotron Radiation Laboratory University of Science&Technology of ChinaHefei230029PR China

Probing the relationship between the adsorption of superoxide species and the kinetics of Li-O_(2) chemistry is critical for designing superior oxygen electrodes for the Li-O_(2) battery,yet the modulation essence,especially at the atomic level,remains little ***,we reveal that the adsorption behaviors of superoxide species can be effectively regulated via a core-induced interfacial charge interaction,and we find that moderate adsorption strength can enable superior rate capability in a Li-O_(2) *** importantly,operando X-ray absorption near-edge structure and surface-enhanced Raman spectroscopy provide tools to monitor in situ the evolution of the superoxide intermediates and the electronic states of the catalyst's metal sites during the discharge and charge processes,and correlate these with the surface adsorption *** concept of tuning adsorption behavior through interfacial charge engineering could open up new opportunities to further advance the development of the Li-O_(2) battery and beyond.

关键词： Superoxide intermediates Adsorption behaviors Nickel carbide Rate capability Li-O_(2)batteries

Superior surface electron energy level endows WP_(2) nanowire arrays with N_(2) fixation functions

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Journal of Energy Chemistry 2021年第8期30卷 55-62,I0003页

作者： Dongdong Han Xiaojing Liu jinyan cai Yufang Xie Shuwen Niu Yishang Wu Yipeng Zang Yanyan Fang Fengqi Zhao Wengang Qu Minghua Chen Gongming Wang Yitai Qian Key Laboratory of Engineering Dielectric and Applications(Ministry of Education) Harbin University of Science and TechnologyHarbin 150080China Hefei National Laboratory for Physical Science at the Microscale Department of ChemistryUniversity of Science&Technology of ChinaHefei 230026China Xi’an Modern Chemistry Research Institute Xi’an 710065China

Nitrogen reduction reaction(NRR)under ambient conditions is always a long-standing challenge in science,due to the extreme difficulty in breaking the strong N≡N triple *** key to resolving this issue undoubtedly lies in searching superior catalysts to efficiently activate and hydrogenate the stable nitrogen *** herein evaluate the feasibility of WP_(2) for N2 activation and reduction,and first demonstrate WP_(2) with an impressive ammonia yield rate of 7.13 lg h^(-1)cm^(-2),representing a promising W-based catalyst for *** analysis further reveals that the NRR catalysis on WP_(2) proceeds in a distal reaction pathway,and the exceptional NRR activity is originated from superior surface electron energy level matching between WP_(2) and NRR potential which facilitates the interfacial proton-coupled electron transfer *** successfully unraveling the intrinsic catalytic mechanism of WP_(2) for NRR could offer a powerful platform to manipulate the NRR activity by tuning the electron energy levels.

关键词： WP_(2) Electrocatalysis Energy level Nitrogen reduction Nanowire arrays

An UPLC-MS/MS application to investigate the chemical composition of the ethanol extract from Anoectochilus chapaensis and its hypoglycemic activity in insulin-resistant HepG2 cells

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Journal of Chinese Pharmaceutical Sciences 2016年第5期25卷 380-386页

作者：蔡金艳倪俊赵林广东药科大学药学院广东广州510006 广东药科大学生命科学与生物制药学院广东广州510006

Anoectochilus chapaensis Gagnep. （Orchidaceae） was named as the ＂king of medicine＂ because of its excellent efficacy for the treatment of diabetes. However, the bioactive constituents are unknown. An ethanol extract from A. chapaensis showed significant stimulating effect on glucose consumption in HepG2 cells. The chemical composition was investigated by UPLC-MS/MS in negative electrospray ionization （ESI） mode, and 63 compounds including flavonoids, triterpenoids, and aliphatic acids were tentatively identified by accurate mass and characteristic fragments. Moreover, the method of hypoglycemic screening with insulin resistant HepG2 cells and UPLC-MS/MS might be potentially useful in rapid and efficient characterization and primary prediction of natural products prior to traditional isolation.

关键词： UPLC-MS/MS Hypoglycemic HepG2 cells Anoectochilus chapaensis

Accelerating water dissociation kinetics of Ni3N by tuning interfacial orbital coupling

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Nano Research 2021年第10期14卷 3458-3465页

作者： Yishang Wu Yufang Xie Shuwen Niu Yipeng Zang jinyan cai Zenan Bian Xuanwei Yin Yanyan Fang Da Sun Di Niu Zheng Lu Amirabbas Mosallanezhad Huijuan Wang Dewei Rao Hongge Pan Gongming Wang Hefei National Laboratory for Physical Science at the Microscale Department of ChemistryUniversity of Science and Technology of ChinaHefei 230026China Experimental Center of Engineering and Material Science University of Science and Technology of ChinaHefei 230026China School of Materials Science and Engineering Jiangsu UniversityZhenjiang 212013China Institute of Science and Technology for New Energy Xi’an Technological UniversityXi’an 710021China School of Materials Science and Engineering State Key Laboratory of Silicon MaterialsZhejiang UniversityHangzhou 310027China

The high unoccupied d band energy of Ni_(3)N basically results in weak orbital coupling with water molecule,consequently leading to slow water dissociation ***,we demonstrate Cr doping can downshift the unoccupied d orbitals and strengthen the interfacial orbital coupling to boost the water dissociation *** prepared Cr-Ni_(3)N/Ni displays an impressive overpotential of 37 mV at 10 mA·cmgeo-2,close to the benchmark Pt/C in 1.0 M KOH *** structural analysis reveals the Cr dopant exists as the Cr-N_(6)states and the average d band energy of Ni_(3)N is also *** functional theory calculation further confirms the downshifted d band energy can strengthen the orbital coupling between the unpaired electrons in O 2p and the unoccupied state of Ni 3d,which thus facilitates the water adsorption and *** work provides a new concept to achieve on-demand functions for hydrogen evolution catalysis and beyond,by regulating the interfacial orbital coupling.

关键词： unoccupied d orbitals Ni_(3)N Cr-N_(6)doping interfacial orbital coupling hydrogen evolution reaction