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IEEE International Conference on Mechatronics (ICM)

作者： Fuchs, Till Zinser, Matthias Renatus, Kevin Baeker, Bernard Dr Ing hcF Porsche AG Dev Verificat & Validat Integrat Management & Ele Weissach Germany Dr Ing hcF Porsche AG Dev Entire Vehicle Elect Elect Architecture & Inf Weissach Germany Tech Univ Dresden Chair Vehicle Mechatron Dresden Germany

ISBN: (纸本)9781665466615

The CASE (Connected, Automated, Services, Electrification) trends are shaping the automotive industry, leading to new disruptive innovations and challenges. Besides level 4/5 automated driving or shared mobility, one major factor for the success of CASE are software over-the-air (SOTA) updates. Even though map updates are common, feature updates throughout the vehicle's life cycle are not yet. This results partially from non-existent virtual respectively hardware free test methods as well as environments for SOTA updates. Therefore, this paper presents a digital twin concept for virtual testing of software updates for mechatronic systems. Firstly, it allows to set up and load Software-in-the-Loop (SiL) test environments including individual vehicle configurations. Secondly, a graph based weighting algorithm enables the use of operational vehicle field data in combination with behaviour-based data from virtual test environments in order to enrich the test quality. Lastly, a traversal algorithm can detect the functions control flow and propagate test cases alongside it.

关键词： Digital Twin Over-the-Air Software Updates traversal algorithm Virtual Testing

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Non-Deterministic Use Case Map traversal algorithm for Scenario Simulation and Debugging 27

Non-Deterministic Use Case Map Traversal Algorithm for Scena...

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IEEE 27th International Requirements Engineering Conference (REW)

作者： Negash, Gabriel Liang, Chun Ming Al Taha, Feras Khzam, Nadin Bou Mussbacher, Gunter McGill Univ Dept Elect & Comp Engn Montreal PQ Canada

ISBN: (纸本)9781728151656

The User Requirements Notation (URN) is a Requirements Engineering modeling language published by the International Telecommunication Union (ITU) to formally specify and analyze what a user would expect from a system. In particular, URN allows the modeling of use cases and scenarios of a system with Use Case Maps (UCM). A key benefit of formalizing these models is the added ability to better analyze them;thus gaining insight to improve quality and understanding of the requirements of the system and its capabilities. Existing traversal mechanisms which analyze UCM do not well reflect the inherent stochasticity of system or user interactions, because they are typically designed for visualization purposes rather than simulation and debugging. We propose a novel traversal mechanism that (i) better reflects real systems by incorporating non-determinism, (ii) considers multiple independent scenarios running concurrently, (iii) implements the UCM concept of map instances, and (iv) consequently enables automated simulation and execution as well as user-driven forward and backward debugging of UCM. We validate the novel traversal mechanism by applying it to a crisis response mobile app that allows a first responder to step forwards and backwards through crisis response actions.

关键词： Debugging Non determinism Simulation traversal algorithm UCM URN Use Case Maps User Requirements Notation

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A rapid approach based on empirical formulas and graph traversal algorithms to automatic generation of fragrance formulas

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Heliyon 2024年第24期10卷 e40873页

作者： Cai, Jiaxiao Tuo, Suxing Li, Yanchun Lu, Hongbing Wu, Yizi Zou, You Ma, Zhen Cui, Yuqi Kong, Bo Zhong, Kejun Technology Center of China Tobacco Hunan Industrial Co. Ltd. Changsha 410007 China Information and Network Center of Central South University Changsha 410083 China China Tobacco Hunan Industrial Co. Ltd. Changsha 410007 China

This article proposes a novel approach for improving the efficiency of fragrance designing and the accuracy of automatic fragrance formula creation based on empirical fragrance formulas and graph traversal algorithms. By effectively extracting the composition information and further analyzing the combination of fragrance materials in 210 fragrance formulas, a relational network model was constructed in the form of a graph to illustrate the relationship between the ingredients used in the formulas. Additionally, a fragrance ingredients information database of 344 common ingredients was constructed and used as a reference for perfumers when setting algorithmic constraints based on their experience. Finally, an automatic fragrance formula creation algorithm was established by constructing a relational network subgraph and finding fragrance formula solutions with the help of depth-first search algorithm that satisfies the constraint conditions and combining with appropriate statistical strategy that could determine the usage of each component in the new fragrance formula. By testing the algorithm with the goal of creating a floral fragrance, the resulting formula well fulfilled our expectations and had practical application value. © 2024

关键词： Automatic formula creation Fragrance formula Olfactory profiles traversal algorithm

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Multi-objective Optimal Adjustment Strategy with Multiple Constraints for Three-Phase Imbalance Loads

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JOURNAL OF ELECTRICAL ENGINEERING & TECHNOLOGY 2023年第1期18卷 213-228页

作者： Ren, Siyuan Tao, Yuan Jia, Zhaopeng Liu, Zhibin Zhou, Xianzi Wei, Menggang North China Inst Aerosp Engn Langfang 065000 Hebei Peoples R China Huaneng Yangtze Environm Technol Co Ltd Beijing 100031 Peoples R China Beijing Zhiyuxin Power Technol Co Ltd Beijing 102200 Peoples R China China EPRI Sci & Technol Co Ltd Beijing 102200 Peoples R China

In low-voltage distribution network, the problem of three-phase imbalance which seriously affect the quality of power supply has existed for a long time, and has become the most common and intractable problem to solve at the end of low-voltage distribution network. To reduce the harm of three-phase imbalance to power grids, in this paper, a three-phase imbalance load adjustment system using commutation switches is proposed. Compared to previous studies that mostly focus on the effect of three-phase imbalance regulation. In particular, by considering switch failure, commutation frequency, and switch lifetime, an optimal allocation strategy with multiple constraints that alleviates the effect of three-phase imbalance on the distribution network is also presented. A new multi-objective functional is proposed to convert the original three-phase imbalance-adjustment task into an optimization problem. The traversal algorithm method is applied to ensure the comprehensiveness and stability of the commutation scheme selection in practical applications. A fractional step computing solution that simultaneously considers the insufficient computational capabilities of hardware and out-of-memory errors is proposed to deal with the huge amount of data caused by complex power grids. Simulated studies and grid connection tests were conducted to validate the feasibility and effectiveness of the proposed method. The maximum unbalance degree might not reach the initial target of 10% in some cases, which is caused by the complexity of power grid operation and the randomness of load. But other solutions with unbalance degree less than 15% could be found by the self-adjustment of the commutation adjustment strategy to reduce the harm of three-phase unbalance to power grid. Consequently, a promising approach was introduced for three-phase imbalance adjustment.

关键词： Three-phase imbalance Multi-objective functional traversal algorithm

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Rule-based generation of HVAC duct routing

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AUTOMATION IN CONSTRUCTION 2022年 139卷 1页

作者： Chen, Zhisen Guan, Hang Yuan, Xiaolei Xie, Tian Xu, Peng Tongji Univ Sch Mech Engn Shanghai Peoples R China Chongqing Univ Sch Civil Engn Chongqing Peoples R China

Traditional manual duct design can result in fan energy waste due to ducts network imbalance and human design error. This paper aims to develop an automated duct routing method, which is able to connect air diffusers across space with the consideration of duct pressure balance, construction obstacles, air resistance reduction and minimising construction costs. Treating air diffusers as nodal connections of a graph, the method uses a rulebased traversal algorithm (RBTA) and a fast resistance calculation model (FRCM) to generate the duct network. The methodology is tested on six different building layouts for the automatic design of ducts in a room and the results meet designer's requirements. Compared with the traditional manually designed duct network, the new duct network is more balanced and costs less. The automated approach cuts design time by more than ten folds and avoid human mistake and error in the traditional design process.

关键词： Duct routing Automation traversal algorithm Optimization Fast resistance calculation Obstacle avoidance

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Line Measurement of Multi-Beam Sounding System Based on Annealing algorithm

Line Measurement of Multi-Beam Sounding System Based on Anne...

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2023 IEEE International Conference on Electrical, Automation and Computer Engineering, ICEACE 2023

作者： Yan, Xiaochen Lv, Lingfeng Xi, Rui Nanjing University of Aeronautics and Astronautics Nanjing China

ISBN: (纸本)9798350309614

For a group of parallel survey lines with sloping sea floor at a certain Angle to the horizontal plane, the total path of the route is different when the Angle projected by the normal direction of the slope changes. This paper studies the shortest path when the value of the Angle is taken. The possible interval of the shortest path is calculated by the set of all possible obtained Angle values through certain traversal calculation method, and then the trend of path change is analyzed by fitting calculation method, and the Angle value of the shortest path is analyzed by annealing algorithm. After several studies to eliminate errors, it is found that the path is shortest when the direction of the measured line is perpendicular to the normal projection. © 2023 IEEE.

关键词： angle set annealing algorithm fitting algorithm shortest path traversal algorithm

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Indirect solution modeling of melting behavior of SiO2 based on the image processing technology

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ASIA-PACIFIC JOURNAL OF CHEMICAL ENGINEERING 2024年第2期19卷 e3028-e3028页

作者： Lu, Cunhao Zhang, Yi Zhang, Jiayi Sun, Weixiang Xia, Anying Zhang, Mingli Chen, Jian Yangzhou Univ Sch Mech Engn Huayang Weststr 196 Yangzhou 225127 Jiangsu Peoples R China Shandong Jinyu Elect Technol Co LTD Innovat Workshop Jinan Shandong Peoples R China McGill Univ Montreal Neurol Inst McGill Ctr Integrat Neurosci Montreal PQ Canada Shandong Technol & Business Univ Sch Comp Sci Yantai Shandong Peoples R China

The utilization of tempered blast-furnace slag through the direct fiber forming process to produce high-value thermal insulation materials offers a dual benefit: it efficiently utilizes the latent heat in the unused slag and significantly increases the value of blast-furnace slag utilization. However, measuring the melting properties of iron slag at high temperatures is challenging. In this study, the melting behavior of SiO2 in a high-temperature molten pool was investigated. We employ dynamic visual data (video stream) captured via a non-contact charge coupled device video recording system to extract SiO2 contours through image processing. The change in image centroid characteristics is used to establish a convolution function relationship, and MATLAB's traversal search algorithm determines the centroid position of SiO2. Given that SiO2 is proportionate to crucible pixels, the area of the SiO2 is calculated through pixel statistics within these contours. A new indirect method is then proposed to process image information to obtain SiO2 volume and mass at different time points. An exponential fitting yields the melting rate function of SiO2. Finally, this indirect method has been compared with shape from shading, quantitative characterization, and dimensional analysis techniques. Besides, the strengths and limitations of each method have been discussed. Our findings reveal that the indirect solution method presented here boasts straightforward calculation steps and imposes minimal image format requirements, which provides theoretical and technical support for the direct fiber forming process of blast-furnace slag.

关键词： image processing indirect solution method K-means clustering algorithm traversal algorithm

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Scalable simulation of programmable photonic integrated waveguide meshs

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OPTICS AND LASER TECHNOLOGY 2022年 156卷

作者： Zhang, Juan Ji, Zhengyong Wu, Zhiyuan Wang, Yang Shanghai Univ Key Lab Specialty Fiber Opt & Opt Access Networks Sch Commun & Informat Engn Shanghai 200444 Peoples R China Chinese Acad Sci Shanghai Inst Opt & Fine Mech Shanghai 201800 Peoples R China Univ Chinese Acad Sci Ctr Mat Sci & Optoelect Engn Beijing 100049 Peoples R China

Programmable photonic integrated waveguide mesh (PPIWM), which is similar to the field-programmable gate array (FPGA) in electronics, can be reconfigured to form a variety of mesh topologies to provide different signal processing functions flexibly. With the development of large-scale PPIWM, multipath routing is becoming more and more complex. Automatic and efficient calculation of the transmission characteristics between arbitrary input and output ports is very essential to realize the simulation and theoretical analysis task for the PPIWMs. In this paper, a simple and effective calculation method for the transmission characteristics of PPIWMs with any scale is proposed. Compared with the available technologies, this method can greatly reduce the time of solving the total scattering matrix in the large-scale PPIWM and has the advantage of easy programming. Typical simulation examples are given to verify the effectiveness of this method. The generality and high efficiency of this method can help us analyze increasingly large and complex reconfigurable photonic circuits with a wide variety of functions.

关键词： Programmable photonic integrated waveguide mesh (PPIWM) Total scattering matrix Graph theory traversal algorithm

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Research on the Design Problem of Maximum Wave Energy Output Power

Research on the Design Problem of Maximum Wave Energy Output...

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作者： Chaoyi Yang Zihan Yang Wentao Ji Yan Lu School of Mechanical and Electrical Engineering Sanjiang University

With the development of economy, energy and environment problems have become a big problem in today's society. To realize sustainable development and protect ecological environment has become the consensus of all countries in the world. Wave energy, as an important Marine renewable resource, is more widely distributed than conventional energy, with abundant energy storage and considerable application value. In this paper, based on the analysis of the heave and pitch motion of the wave energy device in seawater, the motion states of the float and vibrator from static to heave and pitch motion are obtained through the force analysis of the float and vibrator and the establishment of differential equations. The maximum output power of the wave energy device is analyzed and discussed by adjusting the damping coefficient of the damper and other related parameters.

关键词： Equation of Newtonian mechanics traversal algorithm genetic algorithm

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A novel framework for seamless mosaic of Cartosat-1 DEM scenes

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COMPUTERS & GEOSCIENCES 2021年 146卷 104619-104619页

作者： Datla, Rajeshreddy Mohan, C. Krishna Adv Data Proc Res Inst ADRIN Dept Space Signal Proc Div Akbar Rd Manovikas Nagar 500009 Secunderabad India Indian Inst Technol Hyderabad IITH) Dept Comp Sci & Engn Visual Learning & Intelligence Grp VIGIL Hyderabad 502285 India

Digital elevation model (DEM) is used as a source of elevation data in wide range of applications. The applications involving larger area than an individual DEM scene often need a mosaic of DEM scenes. A simple stitching exhibits seams along the borders of DEM scenes in the mosaic output. The presence of seam lines varies with the number of scenes in an overlapping region and their overlap extents. The conventional feathering-based blend method, by virtue of the method itself, considers only two input scenes in an instance of the mosaic process. This method requires a suitable ordering of the input DEM scenes, especially in the overlapping regions containing more than two scenes. In this paper, we propose a framework that automatically handles the multiple overlapping regions and creates a seamless mosaic of Cartosat-1 DEM scenes for a given region of interest. We use a tree data structure to arrange input DEM scenes hierarchically based on their metadata. A traversal algorithm is devised to establish an order of precedence among the DEM scenes. This determines a unique input sequence of DEM scenes during mosaic process. In addition, two variants of feathering-based blend method are formulated to handle all possible cases of the overlapping regions. The experiments have been conducted on Cartosat-1 DEM scenes over 1 degrees x 1 degrees region of interest. We analyze and compare our proposed methodology with average method and feathering-based blend method. We demonstrate that our framework exhibits a smooth transition of elevation values in the overlapping regions of the DEM mosaic output.

关键词： Cartosat-1 Digital elevation model Mosaic Feathering-based blending Order of precedence traversal algorithm Photogrammetry

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