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52221.汽车覆盖件成型的数字模拟技术应用研究
[汽车制造业] [2014-03-25]
This study explored the numerical simulation technique and its application range.By using numerical simulation technology,the automobile achieves mold design and optimization in the software,determines a more reasonable technological parameters and provids a useful reference to the mold design and the process of program development.The test shows that with the help of dynaform software to realize the design and optimization of the mould and make a simulation and analysis of its forming processes,through the simulation,the optimized blank is got,the numerical simulation of the cover to some degree has a guiding significance in the actual production.
关键词：汽车；数值模拟；模具设计；同轴开关
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52222.基于GPS和GMS的智能跟踪辅助系统设计
[汽车制造业] [2014-03-25]
With GSM (Global System for Mobile Communications) and the QT cross-platform development tool,we design an intelligent tracking and assistance system.The system consists of the user and the terminals.The user can track the old,while the terminal can send alarm messages to the user when the old press the alarm button.We design and implement the display,alarm,help and query functions.Also,the system has good portability and scalability.
关键词：汽车；智能跟踪；GPS；GMS
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52223.基于Adams/Car的汽车侧风稳定性仿真分析
[汽车制造业] [2014-03-25]
The vehicle simulation model of 78-DOF is built based on ADAMS/CAR.Both rationality and accuracy of simulation model are verified by comparison analysis methods between real vehicle test and virtual simulation test.The mathematical model of wind pressure center and lateral aerodynamic force are formulated by using the STEP function.The simulation results indicate that the vehicle has the excellent crosswind stability and congruent dynamic response,which agrees with United States (ESV) standard.
关键词：汽车；Adams/Car；侧风稳定性；仿真分析
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52224.消声器结构尺寸与声学性能影响研究
[汽车制造业] [2014-03-25]
Based on software GAMBIT,GT-POWER,SYSNOISE,through comprehensively using finite element and boundary element method,simulating and analyzing the acoustic performance for the basic noise reduction unit,establishing the finite element model,comparing the frequency and noise reduction of different volume ratio of cavity and throat tube.Simulation analysis and experimental results show that the resonant structure parameters have a direct effect on its resonant frequency and noise reduction amount,the relationship characteristic between them is that the ratio more bigger,the requency and noise reduction amount more bigger,too.And draw the two relation formulas through calculation.
关键词：汽车；消声器；声学性能分析；建模与仿真
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52225.模糊控制系统下主动悬置引擎控制线路的应用
[汽车制造业] [2014-03-25]
An automobile power-train active mount system with a piezoelectric stack actuator is introduced.The influence caused by power-train to the body of the car is analyzed by means of parameter self-tuning fuzzy PID control,on which the simulating results are based.It turns out that this control scheme can restrain the influence better caused by power-train to the body of the car.
关键词：汽车；主动悬置；PID；模糊控制
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52226.基于STC89C51的智能消防车设计
[汽车制造业] [2014-03-25]
This paper presents the design of an intelligent fire truck,which is based on the STC89C51 signal chip and realizes tracing,obstacle avoidance,alarm,putting out a fire and so on.The truck uses a model car chassis as a frame,STC89C51 as a microcontroller and including DC motor,flame detector,infrared tracing module with some other circuits.The truck has taken advantage of all the chips and the comprehensive performances in each part reasonably,and the intelligent fire truck can work very well.
关键词：汽车；消防车；STC89C51；跟踪；避障
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52227.基于汽车TSI发动机的连杆裂解技术研究
[汽车制造业] [2014-03-25]
The research of the expanding broken technology of engine connecting rod (also known as the fracture splitting technology) is based on some known factors which effect on connecting rod splitting to make comprehensive analysis on 36MnVS4,the material of connecting rod which is suitable for the fracture splitting technology,it analyses the effect of each chemical composition in steel on mechanical and physical properties,for material steel of new type fracture splitting connecting rod,and makes a theoretical analysis on the fracture splitting technology of the engine connecting rod.Through the analysis and research,a new method to research the fracture splitting of connecting rod is determined,as well as gets some rules to affect process parameter.
关键词：汽车；引擎；连杆；裂解技术
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52228.汽车车灯的故障诊断系统设计
[汽车制造业] [2014-03-25]
Based on the research of the CAN/LIN bus communication protocol,an automobile lamps diagnostic system based on the CAN/LIN bus is designed.After the completion of the software and hardware designs of CAN nodes,LIN nodes and CAN/LIN nodes,the faults of automobile lamps can be successfully diagnosed.LIN node collects light switches and the gateway controls the car light's status via detecting the data frame on the LIN bus.The design and complementation of CAN node,LIN node and CAN/LIN gateway was finished,which made it possible to detect failures in vehicle
关键词：汽车；车灯；CAN；LIN；故障诊断
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52229.基于BP神经网络的CNG汽车注气控制研究
[汽车制造业] [2014-03-25]
Compressed natural gas (CNG) automobile is an emerging new energy car.How to control gas injection is the key technology of CNG electronic control system.At present,the control based on the MAP graph is used usually,but this control method has some shortages,for example larger data,poor adaptive capacity and difficulties in data updating.BP neural network control has adaptive and self-learning,nonlinear processing ability and high generalization,and faults tolerant ability in processing information.In this paper,BP neural network is used to control natural gas injection in order to solve the shortage of the MAP picture control.Simulation experiment shows thefeasibility and advantage of this method.
关键词：汽车；CNG汽车；注气控制；BP神经网络；Matlab仿真
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52230.微型车后桥准双曲面齿轮接触应力分析
[汽车制造业] [2014-03-24]
Established a finite element model ofhypoid gear of a micro-car rear final drive,analysis of the hypoid gear mode and static contact by means of finite element analysis,obtained the surface of gear contact stress distribution in the different installation position,The results show that the finite element simulation exactly reflects the impact of the installation location of the hypoid gear to contact fatigue strength of gear,providing a theoretical basis for the design and installation of the gear.
关键词：汽车；准双曲面齿轮；接触应力；有限元分析
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