飞行模拟器洗出算法优化设计及仿真

Optimization Design and Simulation of Washout Algorithm for Flight Simulator

飞行模拟器逼真度的关键在于洗出算法的优劣,经典洗出算法的参数调整方便、反馈速度和执行速度迅速而被广泛应用,但在结构设计上仍然存在一定缺陷,导致洗出算法相位延迟误差和虚假暗示过大,造成飞行模拟器动感逼真度的下降。根据前庭感知系统对经典洗出算法的结构进行重新设计,使用补偿理论减小算法的相位延迟和虚假暗示。在MATLAB/SIMULINK中对一组实际飞行数据进行仿真验证,并给出优化后洗出算法的最佳参数值范围。仿真结果表明,优化后的洗出算法在最佳参数值范围内能够提升运动平台的利用率和减小虚假暗示,提高飞行模拟器的动感逼真度。

The key of the fidelity of flight simulators lies in the merits of the washout algorithm; the classical washout algorithm has been widely applied owing to its convenient parameter adjustment as well as rapid feedback and execution speed. However, the classical washout algorithm still exists some certain defects in its structure design, which will cause exaggerated phase retardation error and false cues thus resulting in the deterioration in dynamic fidelity of flight simulators. According to vestibular perception system, the structure redesign of the classical washout algorithm was carried out, using the compensation theory to reduce its phase retardation and false cues. In the MATLAB/SIMULINK, simulation verification was conducted on a set of actual flight data, and then presented the range of optimal parameter value. Simulation results show that the optimized washout algorithm within the range of optimal parameter value can enhance the utilization rate of motion platform and reduce the false cues, so as to improve the dynamic fidelity of flight simulators.