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Modeling the dynamic alignment of business and information systems via the lens of human-centered architecture evolution

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Journal of systems Engineering and Electronics 2021年第4期32卷 881-888页

作者： ZHANG Mengmeng YI Shuanghui CHEN Honghui LUO Aimin LIU Junxian ZHANG Xiaoxue Science and Technology on Information Systems Engineering Laboratory National University of Defense TechnologyChangsha 410072China National Key Laboratory for Complex System Simulation Military Academy of SciencesBeijing 100080China

The complexity of business and information systems(IS)alignment is a growing concern for researchers and practitioners *** extant research on alignment architecture fails to consider the human viewpoint,which makes it difficult to embrace emergent *** paper contributes to the extant literature in the following ***,we combine an enterprise architecture(EA)framework with a human viewpoint to address alignment issues in the architecture design phase;second,we describe a dynamic alignment model by developing a humancentered meta-model that explains first-and second-order changes and their effects on alignment *** paper provides better support for the theoretical research and the practical application of dynamic alignment.

关键词： business and information systems(IS)alignment human viewpoint enterprise architecture(EA) meta-model dynamic alignment

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BiGRU-Attention-Based Specific Emitter Identification Method 6

BiGRU-Attention-Based Specific Emitter Identification Method

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6th International Conference on Robotics, Intelligent Control and Artificial Intelligence, RICAI 2024

作者： Xiong, Rongling National Key Laboratory of Complex Aviation System Simulation Chengdu610036 China The 10th Research Institute of China Electronics Technology Group Corporation Chengdu610036 China

ISBN: (纸本)9798331541699

Specific emitter identification plays a pivotal role in electronic countermeasures within the realm of complex electromagnetic environments. This study introduces a novel method for specific emitter identification, leveraging the capabilities of BiGRU-Attention (BiGRU-Att). The process begins with the segmentation of steady-state signal slices from the targeted emitter. Subsequently, six distinct features, including wavelet entropy and amplitude skewness within the time-frequency domain, are meticulously extracted. These extracted sequence feature data are then employed to train the model, culminating in the acquisition of the identification outcome. The methodology was rigorously tested using TETRA communication signals from nine distinct emitters. Experimental findings affirm that the model proficiently harnesses the timing information inherent in the specific emitter's signal, substantially enhancing the identification accuracy. This approach not only underscores the effectiveness of integrating BiGRU and attention mechanisms for signal classification but also sets a precedent for future research in specific emitter identification under intricate electromagnetic conditions. © 2024 IEEE.

关键词： Frequency domain analysis

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Modelling and Analyses of the Range Gate Pull-off (RGPO) Effect on Radar Tracking

Modelling and Analyses of the Range Gate Pull-off (RGPO) Eff...

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2024 Photonics and Electromagnetics Research Symposium, PIERS 2024

作者： Wang, Yanfeng Wu, Qihua Zhao, Tiehua Liu, Xiaobin Zhao, Feng Xiao, Shunping National University of Defense Technology State Key Laboratory of Complex Electromagnetic Environmental Effects on Electronics and Information System College of Electronic Science and Technology China

ISBN: (纸本)9798350375909

Range gate pull-off (RGPO) Jamming disrupts tracking capability of radar system by strategically increasing the latency of radar signal. Hence this kind of active deception jamming is widely adopted. The quantitative assessment and evaluation of RGPO Jamming effects on radar systems is of great significance for enhancing radar anti-jamming capabilities. However, difficulties exist in establishing a mathematical model for analyzing the jamming effects through theoretical analyses. Both the complexity of different radar systems and randomness of radar tracking processes add to this challenge. These factors result in substantial workload to analyze jamming effects. Considering these challenges, a modelling method for RGPO effects on radar based on digital simulation results is introduced in this study. Firstly, the radar range tracking model was established. Through the qualitative analyses of the process of RGPO jamming effect and the principle of affecting the tracking loop, it was found that the rate of a successful pulling off would show a precipitous drop after the pulling speed exceeds a certain threshold. This conclusion was verified in the simulation results of the RGPO effect simulation system. On this basis, to build the relationship between the maximum pull-off speed and the Jamming-to-Signal Ratio (JSR), a modelling method based on spline interpolation and least squares fitting was proposed in this study. The work contributes to a deeper understanding of the impact of RGPO Jamming on radar tracking, and provides valuable insights for bolstering radar countermeasures. © 2024 IEEE.

关键词： Radar countermeasures

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Dynamic Control of Magnetorheological Hydro-Pneumatic Suspension 2nd

Dynamic Control of Magnetorheological Hydro-Pneumatic Suspen...

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2nd International Conference of Mechanical system Dynamics, ICMSD 2023

作者： Jiang, Min Rui, Xiaoting Yang, Fufeng Institute of Launch Dynamics Nanjing University of Science and Technology Nanjing China National Key Laboratory of Complex Multibody System Dynamics Nanjing University of Science and Technology Nanjing China

ISBN: (纸本)9789819980475

A magnetorheological hydro-pneumatic (MRHP) suspension and an effective control method were proposed to enhance vehicle’s ride comfort. Firstly, a testing system for the properties of the MRHP spring was established and its mechanical properties were tested. Secondly, the nonlinear model of the MRHP spring was established. Thirdly, a 9-DOF vehicle dynamics model of the MRHP suspension was established. Finally, an effective semi-active controller for the MRHP suspension was proposed using the On–Off control method. The numerical analysis results showed that the control method for MRHP suspension can significantly improve the ride comfort and handling stability. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.

关键词： Numerical methods

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Temperature-Dependent Normalized Bouc-Wen Model for MR Damper 2nd

Temperature-Dependent Normalized Bouc-Wen Model for MR Dampe...

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2nd International Conference of Mechanical system Dynamics, ICMSD 2023

作者： Zhu, Hongtao Rui, Xiaoting National Key Laboratory of Complex Multibody System Dynamics Institute of Launch Dynamics Nanjing University of Science and Technology Nanjing210094 China

ISBN: (纸本)9789819980475

A temperature-dependent normalized Bouc-Wen model is proposed to describe the hysteresis and temperature characteristic of magneto-rheological (MR) damper. The MR damper is warmed up through long-term continuous experiments and the model parameters are identified using experimental data. The least-squares method and Genetic Algorithm (GA) are utilized to identify the parameters at different temperatures. Also, the relationship between parameters and temperature is established to describe the nonlinear temperature model of the MR damper. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.

关键词： Genetic algorithms

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LiDAR and IMU Inertial Guidance Combined Navigation Front-End Design 2nd

LiDAR and IMU Inertial Guidance Combined Navigation Front-En...

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2nd International Conference of Mechanical system Dynamics, ICMSD 2023

作者： Zhang, Xu Rao, Zixuan Yang, Fufeng Liang, Jiahao National Key Laboratory of Complex Multibody System Dynamics Institute of Launch Dynamics Nanjing University of Science and Technology Nanjing210094 China

ISBN: (纸本)9789819980475

The combination of laser radar and IMU inertial navigation technology can establish a real-time point cloud map of the vehicle’s surrounding environment. The combination of navigation technology can accurately restore the external environment of the tank. Even in the dark and harsh weather conditions, the observer can effectively observe the external environment of the tank. For internal sensors, IMU inertial navigation can monitor the acceleration and angular velocity information based on the carrier’s motion status to obtain the carrier’s pose transformation state. Based on the tank-mounted multi-line laser radar as the hardware basis, research is conducted on algorithms such as data collection, matching, and pose calculation of laser point cloud data. This fusion positioning algorithm is based on the LeGO-LOAM algorithm for laser radar. The input source in the algorithm is laser point cloud data and the gyroscope data and accelerometer data of IMU inertial navigation. The laser radar sensor can obtain pose information through its own point cloud registration, and the IMU inertial navigation algorithm can obtain corresponding velocity and pose information through a strapdown navigation algorithm. The output information of IMU in the algorithm serves as the initial value for the laser radar sensor to solve the pose information. Through the ESKF algorithm, the updated laser radar data information and the real-time output information of IMU are fused to provide pose information for inter-frame registration of laser point clouds. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.

关键词： Optical radar

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Research on Motor-Mechanism Coupling Dynamics Model and Control of Tank Gun Stabilization system 2nd

Research on Motor-Mechanism Coupling Dynamics Model and Cont...

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2nd International Conference of Mechanical system Dynamics, ICMSD 2023

作者： Zheng, Huaqing Rui, Xiaoting Zhang, Jianshu Institute of Launch Dynamics Nanjing University of Science and Technology Nanjing China National Key Laboratory of Complex Multibody System Dynamics Nanjing University of Science and Technology Nanjing China

ISBN: (纸本)9789819980475

Tank gun stabilization systems are the automatic control system that drives and stabilizes the tank gun. It has a significant effect in improving the tank combat capability and exerting its firepower. Firstly, mathematical model of a drive motor is built in this paper, followed by the overall simulation of permanent magnet synchronous motor (PMSM) control system. After that, the stable state characteristics as well as the dynamic characteristics of PMSM are analyzed. Next, combined with the established 2 DOF (two degree of freedom) dynamic model of tank gun stabilization system, a motor-mechanism coupled dynamics model of tank gun stabilization system is established. Subsequently, a coupled dynamics model is controlled by the computed torque control algorithm. Finally, it is shown in the simulation results that the tank gun stabilization system is well controlled. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.

关键词： Permanent magnets

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Research on Dynamic Modeling and simulation of Truck-Mounted Howitzer Under Different Road Surface and Vehicle Speed Conditions 2nd

Research on Dynamic Modeling and Simulation of Truck-Mounted...

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2nd International Conference of Mechanical system Dynamics, ICMSD 2023

作者： Qi, Luyao Wu, Genyang Yang, Fufeng Zhang, Lina National Key Laboratory of Complex Multibody System Dynamics Institute of Launch Dynamics Nanjing University of Science and Technology Nanjing210094 China

ISBN: (纸本)9789819980475

Truck-Mounted Howitzer has outstanding advantages such as a high level of information technology, good tactical mobility, and strong comprehensive combat capabilities, playing an important role in modern warfare. Different road surfaces and vehicle speeds seriously affect the off-road performance of Truck-Mounted Howitzer. To study the dynamic characteristics of the Truck-Mounted Howitzer under different working conditions, this paper establishes a three-dimensional model and a driving dynamic model of the Truck-Mounted Howitzer. Dynamic simulation analysis is carried out using SOLIDWORKS Motion software to obtain the dynamic characteristics of typical parts of the vehicle body under different road surfaces and vehicle speeds, and its ride comfort is evaluated. The accuracy of the simulation results is verified through comparison with experimental data. The research in this article will provide a reference for the optimization design of dynamic parameters of Truck-Mounted Howitzer. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.

关键词： Roads and streets

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Adaptive Elliptic Basis Function Model Construction Strategy Based on Particle Swarm Optimization 2nd

Adaptive Elliptic Basis Function Model Construction Strategy...

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2nd International Conference of Mechanical system Dynamics, ICMSD 2023

作者： Lin, Shengtan Rong, Bao Yang, Shuai Institute of Launch Dynamics National Key Laboratory of Complex Multibody System Dynamics Nanjing University of Science and Technology Nan Jing China

ISBN: (纸本)9789819980475

To address the problems of poor generality and difficulty in obtaining opti-mal parameter combinations for existing surrogate models, this paper pro-poses a construction strategy for an adaptive Elliptic Basis Function neural network model based on particle swarm optimization (PSO-EBF). The K-means clustering algorithm is introduced in the EBF model to improve the efficiency and diversity of model construction. On this basis, the PSO algorithm is introduced to take the EBF model parameters: width coefficient, number of kernel functions, smoothing coefficient, etc. as design variables, and take the model determination coefficient R2 as the optimization objective, and automatically search for the optimal parameter combination of the model. The numerical experimental results show that the PSO-EBF model constructed in this paper can effectively improve the efficiency of surrogate model construction. Compared with ISight commercial software, the accuracy of the PSO-EBF model is higher than that of the traditional EBF model, which proves that this adaptive model can effectively solve the complexity and blindness of surrogate model construction process and improve the efficiency of model construction. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.

关键词： Neural network models

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simulation and Experimental Study on the Impact Force of the Elastic Belt and the Central Part 2nd

Simulation and Experimental Study on the Impact Force of the...

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2nd International Conference of Mechanical system Dynamics, ICMSD 2023

作者： Wei, Qiyong Yang, Fufeng National Key Laboratory of Complex Multibody System Dynamics Institute of Launch Dynamics of Nanjing University of Science and Technology Nanjing210094 China

ISBN: (纸本)9789819980475

The belt squeeze pressure and the impact force in the core part affect the motion attitude and velocity of the projectile in the bore, which are important factors affecting the initial disturbance, shooting accuracy and launching safety of the projectile. The movement of projectile in the chamber experiences the harsh environment of high temperature, high pressure and high overload, which makes it difficult to test the squeeze pressure of the projectile belt and the impact force of the central part. In this paper, a nonlinear finite element model of the movement of gun barrel and projectile bore is established, and the changes of the belt pressure and the impact force of the center part are simulated and analyzed. Based on PVDF piezoelectric film, the elastic belt pressure sensor and the collision force sensor of the center part were designed and developed. The sensitivity and other performance parameters of the sensor were obtained by dynamic calibration. The change process of the elastic belt pressure and the collision force of the center part was obtained by live firing test. The research in this paper has important reference value for the measurement of the motion in the bore of the projectile, the impact analysis of the launch safety and the shooting accuracy. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.

关键词： Projectiles

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