关键词: RTX, 实时仿真, 体系结构, 帧时间

Abstract: In order to meet the higher real-time requirements of hardware-in-loop simulation of new flight vehicles, this paper developed the modeling and real-time simulating software YH-RTSIM based on Real-Time eXtension (RTX), and designed the architecture of software YH-RTSIM that consisted of integration environment of modeling, Windows process and RTSS process, can not only enhance performance of real-time, but also run old simulation programs of user after little change, and designed the communication algorithm between processes based on share memory to carry out real-time data storing and displaying, and designed the control algorithm of frame time to ensure precise frame time. The tests and applications demonstrate that YH-RTSIM can run correctly, difference of frame time of simulation is from -0.0004ms to 0.0004ms during simulating, less than 1 μs (0.001ms), which can meet the requirements of hardware-in-loop simulation of new flight vehicles.

Key words: RTX, Real-time Simulating, Architecture, Frame Time