Man-in-the-loop or human-in-the-loop simulations reproduce virtually real or imaginary environments to the user, being used for several purposes, such as, entertainment, training, experiment and rehabilitation.In training area, the simulators are more and more used aiming, specially for costs and risks reduction besides the total control of training conditions. Training simulators have been used in several areas such as medicine (surgical procedures simulators), evaluation, traffic, nautical, industrial, military, among others.One of the difficulties in the simulator development for training is to project and implement the virtual environment model in software. Even though there are several free and commercial tools that might help in simulator development, few of them focus on system modeling and execution, and those are, in it's majority, proprietary.
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