Be based on the design of the system of car function test of virtual reality technology and development
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Input module: Basically be to offer parameter of car, ground to change the input of the information such as the model, in this module, the data that importable also solid car experiments, use at be being compared with fictitious experiment. 2.
Fictitious experiment module: Basically learn to analyse module by motivation, interface module and fictitious experiment run module, module of dynamical credit analyse basically is the behaviour that changes model, driver according to the parameter of car the performance data of car of real time computation, provide emulation data for fictitious experiment module, fictitious experiment moving module basically is to be an user to provide distinct fictitious experiment environment, realize fictitious car to all sorts of condition in experiment process change and give an user this information feedback. Interface module emulates car the interface equipment such as part of operation part, fictitious moving environment, sensor and user in real time organic link becomes an organic whole. 3.
Function evaluates module: In this module, the user considers all sorts of sense experiences of fictitious experiment below different operating mode integratedly, undertake evaluating to the function of car, revise the parameter of car model according to evaluating a result, undertake optimizing designing. This method was broken through evaluate a standard to be built hard before, index is very difficult the inadequacy such as affirmatory, visible difference. In this module, also can experiment to fictitious experiment and solid car undertake contrast, undertake correction to car model according to the difference. 3, the development example author of fictitious test system with operating the fictitious experiment of stability is exemple undertook developing. The digitlization that uses ADAMS/Car software to build a car above all is fictitious prototype, undertook to its stability emulates an analysis operating, fictitious experiment environment uses WTK (WorldToolKit) and Visual C++ comes true, fictitious appearance part uses the ComponentWorks component implementation of NI company. Figure, distinct implementation will experiment in conveying the emulation data of kinetic analysis to fictitious environment, come through fictitious appearance the metabolic circumstance of accurate indication data. Use interactive technology, make the user has the experience on visual perception official not only, still can pass AGC---System of Viewer G stereo observation, be enmeshed in fictitious experiment environment, experience car function truly, undertake car function is evaluated thereby. Below with car operate the sheet in experiment of stability closed circuit moves line experiment is exemple undertake demonstrative, use ADAMS/Car, the author built the digitlization model of some car, move according to sheet line experiment method (wait like orbit, speed) designed control file, in car in kinetic emulation process, car of this file control makes its the course travel along the regulation, operate from the extraction in emulation analysis result next the main feature parameter of stability (like angular velocity of steering wheel corner, yaw, list horn and side direction acceleration) data, cooperate sheet to move the setting that the line experiments comes the change of itself of dynamic observation car and parameter. The specific parameter in be those who make an user accurate to know car campaign process changes, increased the function of fictitious appearance, use fictitious appearance to cooperate fictitious setting, the change of dynamic indication car in each parameter in emulation process. Show setting for more distinct fact be enmeshed feeling, the stereo setting that developed double viewport shows the result, pass AGC- - system of ViewerG stereo observation, can be enmeshed in fictitious trial setting, process of experiment of feeling, experience. Graph 2 for result of kinetic emulation analysis (speed is 100km/h) , graph 3 move for fictitious sheet the emulation setting in line experiment process and fictitious appearance change. (A) side slants displacement changes (the change of acceleration of corner of B) steering wheel, yaw angular velocity, side direction pursues 2 sheet move line test is main the metabolic contrail of parameter pursues 3 fictitious sheet move the emulation setting in line experiment process and fictitious appearance change 4, brief summary as fictitious prototype and virtual reality technology, take in the design of the car and experiment research respect very great progress. Use motivation of much system interconnected system to learn to analyse software to get car performance data, the test system of performance of fictitious implementation vehicle, can come true completely " indoor and fictitious experiment " , it is future of fictitious prototype system patulous, pass join equipment of a few control, be united in wedlock with fictitious setting photograph, the vibration that can make the user finds a car, side slants, the motion such as list, can get subjective feeling of the person in adding evaluation vehicle performance, come, have very strong real sense. As the development of the technology of the computer, image, technology such as sensor, fictitious experiment technology has the car to develop prospect goodly. CNC Milling