To the high real-time quality requirement of motion simulation system of airport fire engine simulator, a simulation system with simplified motion model was promoted. The simplified motion model simplifies motion model of vehicle based on application requirement of virtual training of vehicle driving. On one hand, the simplification can reduce calculation amount of simulation, on the other hand, the simplification can make it easier to get parameters of model. Motion simulation system based on simplified motion model of airport fire engine was constructed and experiment was taken. Experiment showed that the motion simulation system has high calculation speed and good fidelity through setting parameters properly.
The structures of the instrumentation systems of the airport fire truck simulator uses a distributed control of the PC and PLC, combined with the advanced technology of the widespread use of the stepper motor control of the instrument. And combined stability, adaptability and strong anti-jamming capability of PLC and the stepper motor’s positioning accuracy, ease of control, and high reliability. It is used the unique high-speed pulse output function of PLC to realize the real time and accurate control of stepper motor. It is also use the serial port class SerialPort in VC + + 6.0 programming environment on Serial communication side. The experiment proved that the system design is reasonable, and the instrument can be a smooth, quiet and accurate operation.
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