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对于大幅值的输入信号,三阶多项式缩比法易产生信号畸变且参数配置复杂;而Hermite缩比函数法的触发速度较慢.提出两种改进的缩比方法:基于三阶多项式缩比法的最优参数配置法和加入线性缩比的非线性缩比法.前一种方法通过参数的优化配置最大化稳定区,以防止信号的畸变;后一种方法则利用线性缩比的特性将缩比度限制在稳定区内.仿真结果表明:线性缩比的加入可以防止三阶多项式缩比法信号的畸变;最优配置参数法应用方便且整体效果较好.为航天飞行模拟提供了更有效的缩比策略.
For large-amplitude input signals, the third-order polynomial reduction method easily generates signal distortion and the parameter configuration is complex, while the Hermite scaling function method triggers slower. Two improved reduction methods are proposed: based on the third-order polynomial reduction method The optimal parameter configuration method and the addition of linear scaling than the nonlinear reduction ratio method.The former method through the optimization of the parameters to maximize the stability of the configuration to prevent distortion of the signal The latter method is to use the characteristics of linear scaling The reduction ratio is limited in the stable region.The simulation results show that the linear scaling ratio can prevent the distortion of the third-order polynomial reduction method signal.The optimal configuration parameter method is easy to use and the overall effect is better. Effective scaling strategy.