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基于Simulation X的多轴转向系统功能安全仿真分析
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作者 陈志韬 周怡 +3 位作者 刘相新 白锦洋 刘洋 王真真 《山东科学》 CAS 2024年第3期85-92,共8页
基于ISO 26262《道路车辆功能安全》的标准要求,对特种车的多轴电液转向系统进行分析,以提高系统的安全性和可靠性。运用Simulation X软件建立详细的多轴特种车仿真模型,通过模拟故障模式注入进行仿真试验。对仿真结果和数据进行分析,... 基于ISO 26262《道路车辆功能安全》的标准要求,对特种车的多轴电液转向系统进行分析,以提高系统的安全性和可靠性。运用Simulation X软件建立详细的多轴特种车仿真模型,通过模拟故障模式注入进行仿真试验。对仿真结果和数据进行分析,评估得到故障的严重性、暴露度和可控性,从而确定相应的汽车安全完整性等级。基于故障注入仿真的汽车功能安全分析方法,在系统早期设计阶段可以作为评估架构安全性的重要手段。 展开更多
关键词 多轴车 电液转向系统 simulation X 故障注入仿真 汽车安全完整性等级
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Numerical Simulation of the Settling Flux of Biodeposition in a Bay with Cage Culture Through Similarity Theory and a Simplified Pollution Source
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作者 LIU Yao CHEN Yifan GE Changzi 《Journal of Ocean University of China》 CAS CSCD 2024年第1期247-254,共8页
The settling flux of biodeposition affects the environmental quality of cage culture areas and determines their environmental carrying capacity.Simple and effective simulation of the settling flux of biodeposition is ... The settling flux of biodeposition affects the environmental quality of cage culture areas and determines their environmental carrying capacity.Simple and effective simulation of the settling flux of biodeposition is extremely important for determining the spatial distribution of biodeposition.Theoretically,biodeposition in cage culture areas without specific emission rules can be simplified as point source pollution.Fluent is a fluid simulation software that can simulate the dispersion of particulate matter simply and efficiently.Based on the simplification of pollution sources and bays,the settling flux of biodeposition can be easily and effectively simulated by Fluent fluid software.In the present work,the feasibility of this method was evaluated by simulation of the settling flux of biodeposition in Maniao Bay,Hainan Province,China,and 20 sampling sites were selected for determining the settling fluxes.At sampling sites P1,P2,P3,P4,P5,Z1,Z2,Z3,Z4,A1,A2,A3,A4,B1,B2,C1,C2,C3 and C4,the measured settling fluxes of biodeposition were 26.02,15.78,10.77,58.16,6.57,72.17,12.37,12.11,106.64,150.96,22.59,11.41,18.03,7.90,19.23,7.06,11.84,5.19 and 2.57 g d^(−1)m^(−2),respectively.The simulated settling fluxes of biodeposition at the corresponding sites were 16.03,23.98,8.87,46.90,4.52,104.77,16.03,8.35,180.83,213.06,39.10,17.47,20.98,9.78,23.25,7.84,15.90,6.06 and 1.65 g d^(−1)m^(−2),respectively.There was a positive correlation between the simulated settling fluxes and measured ones(R=0.94,P=2.22×10^(−9)<0.05),which implies that the spatial differentiation of biodeposition flux was well simulated.Moreover,the posterior difference ratio of the simulation was 0.38,and the small error probability was 0.94,which means that the simulated results reached an acceptable level from the perspective of relative error.Thus,if nonpoint source pollution is simplified to point source pollution and open waters are simplified based on similarity theory,the setting flux of biodeposition in the open waters can be simply and effectively simulated by the fluid simulation software Fluent. 展开更多
关键词 fluent fluid simulation software pollution source simplification posterior difference ratio similarity theory Spear-man correlation
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Dynamic Simulation of Tracked Vehicle Using the DADS Software 被引量:1
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作者 郭军 王申申 李晓雷 《Journal of Beijing Institute of Technology》 EI CAS 2001年第4期370-375,共6页
The track model used in the dynamic analysis and design system software is investigated. A home made tank is taken as an example to illustrate the method for modeling an integral tracked vehicle and perform the dynam... The track model used in the dynamic analysis and design system software is investigated. A home made tank is taken as an example to illustrate the method for modeling an integral tracked vehicle and perform the dynamic simulation. The obtained results have demonstrated that the simulation method has the advantage of high efficiency, more convenience and more insight into the dynamical behavior of the system. 展开更多
关键词 DADS software tracked vehicle dynamic simulation
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On modeling approach for embedded real-time software simulation testing 被引量:6
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作者 Yin Yongfeng Liu Bin Zhong Deming Jiang Tongmin 《Journal of Systems Engineering and Electronics》 SCIE EI CSCD 2009年第2期420-426,共7页
Modeling technology has been introduced into software testing field. However, how to carry through the testing modeling effectively is still a difficulty. Based on combination of simulation modeling technology and emb... Modeling technology has been introduced into software testing field. However, how to carry through the testing modeling effectively is still a difficulty. Based on combination of simulation modeling technology and embedded real-time software testing method, the process of simulation testing modeling is studied first. And then, the supporting environment of simulation testing modeling is put forward. Furthermore, an approach of embedded real-time software simulation testing modeling including modeling of cross-linked equipments of system under testing (SUT), test case, testing scheduling, and testing system service is brought forward. Finally, the formalized description and execution system of testing models are given, with which we can realize real-time, closed loop, mad automated system testing for embedded real-time software. 展开更多
关键词 embedded real-time software software testing testing modeling simulation
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DEVELOPMENT OF COMPUTER SIMULATION SOFTWAREON PHASE TRANSFORMATION DURING QUENCHING 被引量:5
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作者 L. Chen, W. Xia and X. J. Chen Department of Materials Science and Engineering, Nanchang Institute of Aeronautical Technology, Nanchang 330034, China 《Acta Metallurgica Sinica(English Letters)》 SCIE EI CAS CSCD 2000年第2期618-622,共5页
A computer software to simulate the phase transformation during quenching is designed based on Avrami equation and Scheil additivity principle of incubation period. The isothermal transformation diagrams of supercool... A computer software to simulate the phase transformation during quenching is designed based on Avrami equation and Scheil additivity principle of incubation period. The isothermal transformation diagrams of supercooled austenite are described by cubic spline functions. This software is possess of a good graphic interface of Windows style, can simulate the whole process in austenite decomposition during continuous cooling. If the cooling rate was given, the fraction of various microstructures transformed of austenite decomposition during continuous cooling at any temperature can be calculated. The simulation results are checked with the quenching experiment of 45 steel. The results indicate that the simulation results are comparatively close to the experimental results. 展开更多
关键词 QUENCHING phase transformation computer simulation software
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Hierarchy-Based Team Software Process Simulation Model 被引量:1
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作者 CHEN Ying-xin LIU Qun 《Wuhan University Journal of Natural Sciences》 EI CAS 2006年第1期273-277,共5页
According to the characteristic of Team Software Process (TSP), it adopts a hierarchy-based model combined discrete event model with system dynamics model. This model represents TSP as form of two levels, the inner ... According to the characteristic of Team Software Process (TSP), it adopts a hierarchy-based model combined discrete event model with system dynamics model. This model represents TSP as form of two levels, the inner level embodies the continuity of the software process, the outer embodies the software development process by phases, and the structure and principle of the model is explained in detail, then formalization description of the model is offered. At last, an example is presented to demonstrate the simulation process and result. This model can simulate team software process from various angles, supervise and predict the software process. Also it can make the management of software development become more scientific and improve the quality of software. 展开更多
关键词 team software process process simulation hierarchy-based simulation model process quality
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Simulation of a Flexible Manufacturing System with AutoMod Software 被引量:1
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作者 Zixia Chen Changbin Jiang 《Intelligent Information Management》 2011年第5期186-189,共4页
A flexible manufacturing system (FMS) is a highly automated, complex system. Simulation is a well-proven method to design or analyze an FMS. Deployment of a radio frequency identification (RFID) system in FMS produces... A flexible manufacturing system (FMS) is a highly automated, complex system. Simulation is a well-proven method to design or analyze an FMS. Deployment of a radio frequency identification (RFID) system in FMS produces large volumes of RFID data streams, which provide valuable information to improve the operation of FMS. Different frameworks are presented in this paper regarding the use of RFID data streams in an FMS simulation. Simulations are performed with AutoMod software. Related technical details are also presented. The paper’s structure is complied as the following steps: step 1, the introduction of AMHS, FMS and AutoMod;step 2, FMS simulation using AutoMod software;step 3, simulation frameworks driven by RFID data streams;step 4, conclusion. 展开更多
关键词 FMS RFID Data STREAM simulation AUTOMOD software
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Component-based software reliability process simulation considering imperfect debugging 被引量:1
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作者 张策 Cui Gang +1 位作者 Bian Yali Liu Hongwei 《High Technology Letters》 EI CAS 2014年第1期9-15,共7页
In view of the flaws of component-based software (CBS) reliability modeling and analysis, the low recognition degree of debugging process, too many assumptions and difficulties in obtaining the solution, a CBS relia... In view of the flaws of component-based software (CBS) reliability modeling and analysis, the low recognition degree of debugging process, too many assumptions and difficulties in obtaining the solution, a CBS reliability simulation process is presented incorporating the imperfect debugging and the limitation of debugging resources. Considering the effect of imperfect debugging on fault detec- tion and correction process, a CBS integration testing model is sketched by multi-queue muhichannel and finite server queuing model (MMFSQM). Compared with the analytical method based on pa- rameters and other nonparametric approaches, the simulation approach can relax more of the usual reliability modeling assumptions and effectively expound integration testing process of CBS. Then, CBS reliability process simulation procedure is developed accordingly. The proposed simulation ap- proach is validated to be sound and effective by simulation experiment studies and analysis. 展开更多
关键词 software reliability growth model (SRGM) component-based software (CBS) imperfect debugging reliability simulation queuing theory
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Modeling and Simulation of Skid-mounted LNG Plants Using HYSYS Software 被引量:1
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作者 黄志光 汪荣顺 +1 位作者 顾安忠 石玉美 《Journal of Donghua University(English Edition)》 EI CAS 2007年第1期1-5,共5页
This study presents three kinds of skid-mounted plants, including single mixed refrigerant cycle (MRC), nitrogen expander cycle, and natural gas (NG) Claude cycle. Hysys simulation shows that single MRC is the mos... This study presents three kinds of skid-mounted plants, including single mixed refrigerant cycle (MRC), nitrogen expander cycle, and natural gas (NG) Claude cycle. Hysys simulation shows that single MRC is the most efficient cycle among the three. The specific power of single MRC liquefiers is 1 485 k.l/kg, 15% higher than that of large liquefaction process. Considering the recovery of stranded-gas, commercial analysis suggests that the initial cost of LNG plants ranging from 1 to 100 ms/day can be paid back in 2 to 4 years. 展开更多
关键词 small-scale natural gas liquefaction plants process simulation economic effects Hysys software.
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Application of 3-D numerical simulation software SRIFCAST to produce ductile iron castings
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作者 Junqing WANG Xun SUN +2 位作者 Shifang SU Baozhi LI Jun YANG 《China Foundry》 SCIE CAS 2005年第3期151-158,共8页
Based on a method using numerical simulation equations and their solution schemes for liquid metal flows andheat transfer during mold filling and the solidification process of casting, 3-D numerical simulation softwar... Based on a method using numerical simulation equations and their solution schemes for liquid metal flows andheat transfer during mold filling and the solidification process of casting, 3-D numerical simulation software SRIFCAST wascreated. This includes enmeshment of casting; velocity and temperature fields calculation; displaying iso-temperature lines;velocity vectors and 3-D temperature fields on a Windows 9x operating system. SRIFCAST was applied to produce soundcastings of automobile and diesel engines, and also to connect with microstructure simulation for ductile iron castings. 展开更多
关键词 DUCTILE iron CASTINGS MOLD FILLING and SOLIDIFICATION velocity and temperature fields microstructure modeling numerical simulation software
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Simulation-Based Evaluation for the Impact of Personnel Capability on Software Testing Performance
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作者 Jithinan Sirathienchai Peraphon Sophatsathit Decha Dechawatanapaisal 《Journal of Software Engineering and Applications》 2012年第8期545-559,共15页
This study presents a decision making process in three steps of knowledge management for test organization using process simulation and financial analysis. First, project cost assessment of test knowledge management p... This study presents a decision making process in three steps of knowledge management for test organization using process simulation and financial analysis. First, project cost assessment of test knowledge management process subjects to different project duration and number of staffs. Two knowledge management simulation models representing experienced personnel with knowledge sharing and inexperienced personnel with internal training respectively are employed to contrast test personnel capability. Second, performance evaluation of software testing process by different personnel capability is conducted to simulate system test using three project metrics, namely, duration, effort cost, and quality. Third, a comparative financial analysis is prepared to determine the best solution by return on investment, payback period, and benefit cost ratio. The results from three stages of finding are discussed to arrive at the final scenario. We provide a case study evaluating how software testing industry needs to build effective test organization with high quality personnel for sustainable development and improvement. 展开更多
关键词 software Testing PROCESS KNOWLEDGE Management Test ORGANIZATION PROCESS simulation PERSONNEL CAPABILITY
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A Simulation Software for the Prediction of Thermal and Mechanical Properties of Wood Plastic Composites
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作者 Ritu Gupta Norrozila Binti Sulaiman +1 位作者 Arun Gupta M.D.H. Beg 《Computer Technology and Application》 2013年第1期1-5,共5页
Modelling and simulation has become an important tool in research and development. Simulation models are used to develop better understanding of the internal properties and impact of various parameters on the final qu... Modelling and simulation has become an important tool in research and development. Simulation models are used to develop better understanding of the internal properties and impact of various parameters on the final quality of the product or process. Simulation model reduces the number of experiments and saves the wastage of material, time and money and are widely used in automobile industry, aircrafts manufacturing, process engineering, training for military, health care sector and many more. Wood Plastic Composite (WPC) is a bio-composite made by mixing wood fibers and plastic granules together at high temperature by compression molding or injection molding. A large quantity of WPC is rejected due to poor quality and low mechanical strength. There is a need to improve the understanding of the wood plastic composites, with both theoretical and experimental analysis. The impact of various parameters and processing conditions on the final product is not known to the industry people, due to less simulation models in this field. A new simulation software WPC Soft is developed to predict the mechanical and thermal properties of WPC. The software can predict the mechanical and thermal properties of WPC. The simulation results were validated with the experimental results and it was observed that the predicted values are quite close to the experimental values and with the further refining of the model, prediction can be further improved. The present simulation software can be easily used by the industry people and it requires very little knowledge of computers or modeling for its operation. 展开更多
关键词 Wood plastic composite simulation software heat transfer mechanical properties.
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RFIC Packaging Design with CST Full-Wave Time-Domain Simulation Software
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《电子工业专用设备》 2006年第8期I0023-I0027,共5页
关键词 RFIC Packaging Design with CST Full-Wave Time-Domain simulation software CST DESIGN simulation WAVE
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Software Simulation in GSM Environment and Hardware Implementation of Improved Multi-band Excitation Vocoder
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作者 KuangJingming LiFeng 《通信学报》 EI CSCD 北大核心 1998年第5期18-27,共10页
SoftwareSimulationinGSMEnvironmentandHardwareImplementationofImprovedMultibandExcitationVocoderKuangJingmin... SoftwareSimulationinGSMEnvironmentandHardwareImplementationofImprovedMultibandExcitationVocoderKuangJingmingLiFengLiuBotao(E... 展开更多
关键词 软件仿真 多带合成声码器 GSM 语音
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Software Architecture for Modeling and Simulation of Underwater Acoustic Information Systems
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作者 王希敏 蔡志明 《Defence Technology(防务技术)》 SCIE EI CAS 2009年第1期52-59,共8页
The simulation of underwater acoustic information flow is an important way to research sonar performance and its engagement effectiveness in the ocean environment.This paper analyzes the significance of modeling an op... The simulation of underwater acoustic information flow is an important way to research sonar performance and its engagement effectiveness in the ocean environment.This paper analyzes the significance of modeling an open and sophisticated simulation software architecture by object-oriented method,and introduces the modeling processes and expression method of simulation architecture.According to the requirements of simulation system and the underwater acoustic information flow,the logical architecture of simulation software system is modeled by the object-oriented method.A use-case view captured the system requirements.The logical view shows the logical architecture of software system.The simulation software is decomposed into the loose coupling constituent parts by layering and partitioning the packages for maintainability.The design patterns enabled the simulation software to have good expansibility and reusability.The simulation system involving multi-targets and multi-sonar is developed based on the architecture model.Practices show that the model meets the needs for simulating an open and sophisticated system. 展开更多
关键词 体系结构建模 软件体系结构 仿真系统 信息系统 水下 逻辑结构 面向对象 软件系统
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Study on the Significance of Special Sports Computer Simulation and Simulation Software Development
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作者 Liaokun Ye Sha Zhang 《Journal of Zhouyi Research》 2014年第3期54-56,共3页
关键词 计算机仿真技术 运动训练 计算机模拟 软件开发 科学研究 计算机技术 计算机建模 工程设计
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Making Software Engineering Education Structured, Relevant and Engaging through Gaming and Simulation
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作者 Pan-Wei Ng 《通讯和计算机(中英文版)》 2013年第11期1365-1373,共9页
关键词 软件工程项目 扑克游戏 教育结构 制作 仿真 开发团队 教育工作者 嵌入式产品
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The Research on Modeling and Simulation of Direct-sequence Spread Spectrum Communications System Based on Software Radio
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作者 Dingxue Wu Feng Xue +1 位作者 Wenping Fan Xiaohong Xiao 《通讯和计算机(中英文版)》 2006年第8期52-57,共6页
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Simulation-based Graphic Method for Dynamic System Modeling
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作者 Qinyao Liu Haiyang Zhang +1 位作者 Jia Wang Xuchen Wang 《计算机教育》 2023年第12期48-54,共7页
The first step for engineering students to understand the practical system is to describe the system,which means to establish the mathematic model for the considered system.However,traditional mathematical modeling te... The first step for engineering students to understand the practical system is to describe the system,which means to establish the mathematic model for the considered system.However,traditional mathematical modeling techniques are not readily assimilated by students,because the traditional modeling needs to obey the complicated physical laws for different engineering areas and requires a highly iterative process.In this paper,the simulation-based graphic modeling method is introduced to help students model the system and improve their performance in engineering education.The results from the questionnaire indicate that the simulation-based graphic method can help students to do the modeling of the system and improve their performance compared to the traditional ways. 展开更多
关键词 software simulation Dynamic system Mathematical modeling
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基于Plant Simulation仿真在涂装工艺规划应用分析
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作者 王铮昊 何小龙 齐青宇 《现代涂料与涂装》 CAS 2023年第6期42-45,72,共5页
通过Plant Simulation软件仿真模拟,对车间整体布局及工艺参数进行了虚拟验证,在规划阶段提前预判了产能瓶颈及设计冗余,有效规避了设备投产后的运行风险.通过建立仿真试验,对比不同工艺参数、不同产线配置的仿真结果,进行相应设计优化... 通过Plant Simulation软件仿真模拟,对车间整体布局及工艺参数进行了虚拟验证,在规划阶段提前预判了产能瓶颈及设计冗余,有效规避了设备投产后的运行风险.通过建立仿真试验,对比不同工艺参数、不同产线配置的仿真结果,进行相应设计优化,降低了设备投资费用及运行能耗. 展开更多
关键词 涂装 工艺规划 Plant simulation软件
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