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A microstrip filter direct-coupled amplifier based on active coupling matrix synthesis Research Articles

Yang Gao, Fan Zhang, Yingying Qiao, Jiawei Zang, Lei Li, Xiaobang Shang,gaoyang678@outlook.com,lilei@zzu.edu.cn

Frontiers of Information Technology & Electronic Engineering 2021, Volume 22, Issue 9,   Pages 1260-1269 doi: 10.1631/FITEE.2000292

Abstract: This paper presents a methodology of designing an integrated with a filter using an active . The filter is directly coupled to the active device, and the integrated filter can achieve filtering as well as matching functionalities, simultaneously, eliminating the need for separate matching networks. The filter is represented by an active , with additional columns and rows in the matrix corresponding to the active transistor. The matrix can be used to calculate the S-parameter responses (i.e., the return loss and the gain) and the initial dimensions of the integrated device. Moreover, the integration of a filter and an leads to a reduced loss and a more compact architecture of the devices. An X-band filter has been designed and demonstrated as an example. technology has been chosen because of its appealing advantages of easy fabrication, low cost, and most importantly, easy integration with active devices.

Keywords： 放大器；滤波–放大器集成；微带线；耦合矩阵    

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Research on Process Reconfiguration With DSM in Collaborative Design

Xu Luning´,Zhang Heming,Zhang Yongkang

Strategic Study of CAE 2006, Volume 8, Issue 5,   Pages 52-57

Abstract:

Design structure matrix is applied to the collaborative design process for complex products. The recognition problem of coupling activities in DSM can be solved by graph theory knowledge. And a method for reconfiguration of DSM blocking is presented according to the principles. Then, reengineering for a design process is proposed by decomposing and tearing the blocked activities to shorten the cycle of design and reduce the cost of development. Finally, a case, the aircraft design process reconfiguration with DSM, is presented.

Keywords： DSM (design structure matrix)     process reconfiguration     coupling     tearing    

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The Application of Risk Matrix to Acquisition Risk Evaluation for Weapon and Equipment

Li Zhongmin,Wei Yiming,Tang Shuchun,Chen Jian

Strategic Study of CAE 2006, Volume 8, Issue 6,   Pages 95-99

Abstract:

Risk evaluation is the basis of acquisition management for weapon and equipment. Based on the totally analyzing and summarizing risk matrix widely used abroad, the paper firsdy discusses the application of risk matrix in acquisition risk evaluation for weapon and equipment in China. Then, the paper, beginning with the two rules of risk impact and risk probability, demonstrates risk evaluation of a type of weapon and equipment as a case study, thus lays a basis for the scientific and rational risk management decision making.

Keywords： risk matrix     risk evaluation     acquisition for weapon and equipment    

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Statistical Energy Analysis for Complicated Coupled System and Its Application in Engineering

Sheng Meiping

Strategic Study of CAE 2002, Volume 4, Issue 6,   Pages 77-84

Abstract:

The new SEA method developed in this dissertation is the integration of virtues from the mobility analysis, classical SEA and classical theory of power flow, which fits for vibration and noise analysis of complicated coupled systems. This research provides a theoretical base for study on vibration transfer between structures and noise radiation of complicated mechanical systems, and it also offers guidance for isolation and noise control of engineering structures. Contributions of this dissertation are as follows： First, in view of the disunion of SEA parameters in classical SEA, a union definition of SEA parameters is brought forward. Secondly, some elements that influence energy transfer between mechanical structures are separated and corresponding parameters are introduced to investigate those influences separately. (1)Linking style coefficient is introduced to denote the rule of vibration energy transfer when structures are linked at one point, some points or a line. (2) Non-conservative coupling coefficient is introduced to describe the influence of isolation or damping when structures are isolated or damped. (3) Indirect coupling coefficient is introduced to research the property of vibration energy transfer when two structures are indirectly linked by other structure. Thirdly, on the basis of above, gradation analysis is put forward to simplify the vibration analysis of complicated coupled system. Then, by using theoretical achievements above, the property of vibration and noise radiation of underwater vehicle is analyzed by the developed SEA for the first time. Levels of vibration and sound power induced by two different underwater vehicles are predicted. The analysis results agree well with experiment results. Finally, based on the analysis, the direction of noise control of underwater vehicle is pointed out.

Keywords： power flow     statistical energy analysis(SEA)     mobility     coupling    

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Risk Matrix Method and Its Application in the Field of Technical Project Risk Management

Zhu Qichao,Kuang Xinghua,Shen Yongping

Strategic Study of CAE 2003, Volume 5, Issue 1,   Pages 89-94

Abstract:

Technical project risk management has always been given great concern by the Department of Defense of the United States of America (DoD). This paper systematically introduces risk matrix and its application, which is one of the most popular risk management technologies in the field of DoD acquisition projects risk management. As a conclusion, this paper evaluates the usability of risk matrix when to be used to assess and mitigate technical project risks in China, and delivers a framework of risk matrix application in high-tech project risk management.

Keywords： risk matrix     risk management     project management    

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DSM Applied to Planning Process in Cooperative Design for Complex Products

Xu Luning,Zhang Heming,Zhang Yongkang

Strategic Study of CAE 2005, Volume 7, Issue 6,   Pages 41-44

Abstract:

The paper applied the matrix to the cooperative design for complex products, described the design flow diagram with design structure matrix (DSM), then reset the planning process according to analyzing and partitioning the DSM in order to shorten the cycle of design and reduce the cost of development.

Keywords： DSM (design structure matrix)     analysis     partition     planning    

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Differential coupling contributes to synchronization via a capacitor connection between chaotic circuits Regular Papers

Yu-meng XU, Zhao YAO, Aatef HOBINY, Jun MA

Frontiers of Information Technology & Electronic Engineering 2019, Volume 20, Issue 4,   Pages 571-583 doi: 10.1631/FITEE.1800499

Abstract:

Nonlinear oscillators and circuits can be coupled to reach synchronization and consensus. The occurrence of complete synchronization means that all oscillators can maintain the same amplitude and phase, and it is often detected between identical oscillators. However, phase synchronization means that the coupled oscillators just keep pace in oscillation even though the amplitude of each node could be different. For dimensionless dynamical systems and oscillators, the synchronization approach depends a great deal on the selection of coupling variable and type. For nonlinear circuits, a resistor is often used to bridge the connection between two or more circuits, so voltage coupling can be activated to generate feedback on the coupled circuits. In this paper, capacitor coupling is applied between two Pikovsk-Rabinovich (PR) circuits, and electric field coupling explains the potential mechanism for differential coupling. Then symmetric coupling and cross coupling are activated to detect synchronization stability, separately. It is found that resistor-based voltage coupling via a single variable can stabilize the synchronization, and the energy flow of the controller is decreased when synchronization is realized. Furthermore, by applying appropriate intensity for the coupling capacitor, synchronization is also reached and the energy flow across the coupling capacitor is helpful in regulating the dynamical behaviors of coupled circuits, which are supported by a continuous energy exchange between capacitors and the inductor. It is also confirmed that the realization of synchronization is dependent on the selection of a coupling channel. The approach and stability of complete synchronization depend on symmetric coupling, which is activated between the same variables. Cross coupling between different variables just triggers phase synchronization. The capacitor coupling can avoid energy consumption for the case with resistor coupling, and it can also enhance the energy exchange between two coupled circuits.

Keywords： Synchronization     Voltage coupling     Chaotic circuit     Capacitor coupling    

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A matrix-based static approach to analysis of finite state machines Research Article

He DENG, Yongyi YAN, Zengqiang CHEN,yyyan@mail.nankai.edu.cn

Frontiers of Information Technology & Electronic Engineering 2022, Volume 23, Issue 8,   Pages 1239-1246 doi: 10.1631/FITEE.2100561

Abstract: Traditional matrix-based approaches in the field of construct state transition matrices, and then use the powers of the state transition matrices to represent corresponding dynamic transition processes, which are cornerstones of system analysis. In this study, we propose a static matrix-based approach that revisits a finite state machine from its structure rather than its dynamic transition process, thus avoiding the "explosion of complexity" problem inherent in the existing approaches. Based on the static approach, we reexamine the issues of closed-loop detection and controllability for deterministic . In addition, we propose controllable equivalent form and minimal controllable equivalent form concepts and give corresponding algorithms.

Keywords： Logical systems     Finite-valued systems     Semi-tensor product of matrices     Finite state machines     Matrix approaches    

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MCDB Monte Carlo dosimetry code system and its applications

Deng Li,Li Gang,Chen Chaobin,Ye Tao

Strategic Study of CAE 2012, Volume 14, Issue 8,   Pages 72-77

Abstract:

MCDB is developed for boron neutron capture therapy (BNCT). This system consists of a medical pre-processor, a dose computation and a post-processor. MCDB automatically produces the input file from CT and MRI image data. In Monte Carlo dose calculation, several accelerated measures, such as the fast track technique, mesh tally matrix and material matrix, are developed. In this paper, we proposed a real model simulated by MCNP and MCDB, respectively. The almost same results as MCNP are achieved. MCDB is faster in computational speed than MCNP.

Keywords： MCDB     fast tracking technique     mesh tally matrix     material matrix    

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Study on dynamics of coupled systems in high-speed trains

Zhang Weihua

Strategic Study of CAE 2015, Volume 17, Issue 4,   Pages 42-52

Abstract:

According to the structure and technical features of high-speed railway， the high-speed train， rail line， air flow， power supply and catenary which are relevant to the high-speed train and have an effect on the dynamic behavior of the high-speed train are coupled as a unified system. The dynamic model of coupled systems in high-speed trains are created by establishing the dynamic models of high-speed train， rail line， pantograph-catenary and power supply and the coupled interaction models of wheel-rail， pantograph-catenary， liquid-solid and electro-mechanical. For the high speed train operation simulation requirements， this paper studied the train dynamics modeling and calculation method based on cyclic variable parameters method， the train-line coupled calculation method based on the slip model and the liquid-solid coupled calculation method based on the relaxation factor. the simulation of coupled systems in high-speed trains are realized. [Key words] high-speed train； service performance； train detection； tracking test； performance evolution

Keywords： high-speed train； service performance； train detection； tracking test； performance evolution    

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The Model of Water and Nitrogen Coupling in Winter Wheat Yield

Zhai Bingnian,Li Shengxiu

Strategic Study of CAE 2002, Volume 4, Issue 9,   Pages 69-74

Abstract:

By using the quadratic general spinning design, pot experiments were conducted to study the comprehensive effect of the stage and rate of N fertilizer application under different status of soil moisture on winter wheat yield systematically. The results showed that the mathematical model established based on the result of experiments is significant. By analysing the mathematical model, the soil moisture, tillering and jointing stage were thought to be the remarkable factors, while the influencing sequence from large to small is： soil moisture ＞ tillering stage ＞ jointing stage ＞ milking stage ＞ seedling stage; The interaction effects exist between different factors.

Keywords： winter wheat     nitrogen     soil moisture     water and nitrogen coupling     mathematical model    

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Study on WBS matrix for construction management in urban rail-transi

Xie Lei1,Chen Qun,Yu Hua

Strategic Study of CAE 2010, Volume 12, Issue 1,   Pages 102-107

Abstract:

To improve construction management in the urban rail-transit, the WBS concept is well exploited by crossing a horizontal breakdown of urban rail-transit construction activities with a vertical breakdown of its technology system, thus a WBS matrix is obtained, which is more complete and useful than the WBS tree. This article firstly stated the concepts of interface and WBS matrix, with urban rail-transit analysis of how to use WBS matrix to improve interface management. The composition, structure system and principle of WBS matrix were specifically analyzed by contrastive method. The handling efficiency of WBS concept was decided by the changing of the factors.

Keywords： urban rail-transit     WBS matrix     interface     interface management    

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Matrix-valued distributed stochastic optimization with constraints

夏子聪,刘洋,卢文联,桂卫华

Frontiers of Information Technology & Electronic Engineering 2023, Volume 24, Issue 9,   Pages 1239-1252 doi: 10.1631/FITEE.2200381

Abstract: In this paper, we address matrix-valued distributed stochastic optimization with inequality and equality constraints, where the objective function is a sum of multiple matrix-valued functions with stochastic variables and the considered problems are solved in a distributed manner. A penalty method is derived to deal with the constraints, and a selection principle is proposed for choosing feasible penalty functions and penalty gains. A distributed optimization algorithm based on the gossip model is developed for solving the stochastic optimization problem, and its convergence to the optimal solution is analyzed rigorously. Two numerical examples are given to demonstrate the viability of the main results.

Keywords： Distributed optimization     Matrix-valued optimization     Stochastic optimization     Penalty method     Gossip model    

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Improving the reconstruction efficiency of sparsity adaptive matching pursuit based on the Wilkinsonmatrix None

Rasha SHOITAN, Zaki NOSSAIR, I. I. IBRAHIM, Ahmed TOBAL

Frontiers of Information Technology & Electronic Engineering 2018, Volume 19, Issue 4,   Pages 503-512 doi: 10.1631/FITEE.1601588

Abstract: Sparsity adaptive matching pursuit (SAMP) is a greedy reconstruction algorithm for compressive sensing signals. SAMP reconstructs signals without prior information of sparsity and presents better reconstruction performance for noisy signals compared to other greedy algorithms. However, SAMP still suffers from relatively poor reconstruction quality especially at high compression ratios. In the proposed research, the Wilkinson matrix is used as a sensing matrix to improve the reconstruction quality and to increase the compression ratio of the SAMP technique. Furthermore, the idea of block compressive sensing (BCS) is combined with the SAMP technique to improve the performance of the SAMP technique. Numerous simulations have been conducted to evaluate the proposed BCS-SAMP technique and to compare its results with those of several compressed sensing techniques. Simulation results show that the proposed BCS-SAMP technique improves the reconstruction quality by up to six decibels (dB) relative to the conventional SAMP technique. In addition, the reconstruction quality of the proposed BCS-SAMP is highly comparable to that of iterative techniques. Moreover, the computation time of the proposed BCS-SAMP is less than that of the iterative techniques, especially at lower measurement fractions.

Keywords： Block compressive sensing     Sparsity adaptive matching pursuit     Greedy algorithm     Wilkinson matrix    

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An algorithm for identifying symmetric variables based on the order eigenvalue matrix Article

Xiao-hua LI, Ji-zhong SHEN

Frontiers of Information Technology & Electronic Engineering 2017, Volume 18, Issue 10,   Pages 1644-1653 doi: 10.1631/FITEE.1601052

Abstract: To simplify the process for identifying 12 types of symmetric variables in Boolean functions, we propose a new symmetry detection algorithm based on minterm expansion or the truth table. First, the order eigenvalue matrix based on a truth table is defined according to the symmetry definition of a logic variable. By analyzing the constraint conditions of the order eigenvalue matrix for 12 types of symmetric variables, an algorithm is proposed for identifying symmetric variables of the Boolean function. This algorithm can be applied to identify the symmetric variables of Boolean functions with or without don’t-care terms. The proposed method avoids the restriction by the number of logic variables of the graphical method, spectral coefficient methods, and AND-XOR expansion coefficient methods, and solves the problem of completeness in the fast compu-tation method. The algorithm has been implemented in C language and tested on MCNC91 benchmarks. The application results show that, compared with the traditional methods, the new algorithm is an optimal detection method in terms of the applicability of the number of logic variables, the Boolean function including don’t-care terms, detection type, and complexity of the identification process.

Keywords： Boolean function     Symmetric variable     Boolean logic algebra system     Order eigenvalue matrix     Truth table    

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Title Author Date Type Operation

A microstrip filter direct-coupled amplifier based on active coupling matrix synthesis

Yang Gao, Fan Zhang, Yingying Qiao, Jiawei Zang, Lei Li, Xiaobang Shang,gaoyang678@outlook.com,lilei@zzu.edu.cn

Journal Article

Research on Process Reconfiguration With DSM in Collaborative Design

Xu Luning´,Zhang Heming,Zhang Yongkang

Journal Article

The Application of Risk Matrix to Acquisition Risk Evaluation for Weapon and Equipment

Li Zhongmin,Wei Yiming,Tang Shuchun,Chen Jian

Journal Article

Statistical Energy Analysis for Complicated Coupled System and Its Application in Engineering

Sheng Meiping

Journal Article

Risk Matrix Method and Its Application in the Field of Technical Project Risk Management

Zhu Qichao,Kuang Xinghua,Shen Yongping

Journal Article

DSM Applied to Planning Process in Cooperative Design for Complex Products

Xu Luning,Zhang Heming,Zhang Yongkang

Journal Article

Differential coupling contributes to synchronization via a capacitor connection between chaotic circuits

Yu-meng XU, Zhao YAO, Aatef HOBINY, Jun MA

Journal Article

A matrix-based static approach to analysis of finite state machines

He DENG, Yongyi YAN, Zengqiang CHEN,yyyan@mail.nankai.edu.cn

Journal Article

MCDB Monte Carlo dosimetry code system and its applications

Deng Li,Li Gang,Chen Chaobin,Ye Tao

Journal Article

Study on dynamics of coupled systems in high-speed trains

Zhang Weihua

Journal Article

The Model of Water and Nitrogen Coupling in Winter Wheat Yield

Zhai Bingnian,Li Shengxiu

Journal Article

Study on WBS matrix for construction management in urban rail-transi

Xie Lei1,Chen Qun,Yu Hua

Journal Article

Matrix-valued distributed stochastic optimization with constraints

夏子聪,刘洋,卢文联,桂卫华

Journal Article

Improving the reconstruction efficiency of sparsity adaptive matching pursuit based on the Wilkinsonmatrix

Rasha SHOITAN, Zaki NOSSAIR, I. I. IBRAHIM, Ahmed TOBAL

Journal Article

An algorithm for identifying symmetric variables based on the order eigenvalue matrix

Xiao-hua LI, Ji-zhong SHEN

Journal Article