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Real-time simulation refers to a computer model of a physical system that can execute at the same rate as actual "wall clock" time. In other words, the computer model runs at the same rate as the actual physical system. For example if a tank takes 10 minutes to fill in the real-world, the simulation would take 10 minutes as well. Real-time simulation occurs commonly in computer gaming, but also is important in the industrial market for operator training and off-line controller tuning.〔(The Succsssful development process with MATLAB Simulink in the framework of ESA's ATV project )〕 Computer languages like LabVIEW, VisSim and Simulink allow quick creation of such real-time simulations and have connections to industrial displays and Programmable Logic Controllers via OLE for process control or digital and analog I/O cards. Several real-time simulator are available on the market like xPC Target and RT-LAB for mechatronic systems and using Simulink, eFPGAsim and eDRIVEsim for power electronic simulation and eMEGAsim, HYPERSIM and RTDS for power grid real-time (RTS) simulation. ==What is real-time simulation== In a real time simulation the simulation is performed in a discrete time with constant step also known as fixed step simulation as time moves forward in equal duration of time,other techniques having variable step are used for high frequency transients but are unsuitable for real time simulation.In a real time simulation the time required to solve the internal state equations and functions representing the system must be less than the fixed step ,and must not be greater than the fixed step and if it is than an over run is said to be there.In simple words Real time simulator must produce the internal variables and output within the same length of time as its physical counterpart would Configuring your models to run in real time enables you to use hardware-in-the-loop simulation to test your controller. You can make design changes earlier in the development process, reducing costs and shortening the design cycle. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Real-time simulation」の詳細全文を読む スポンサード リンク
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