文章应用频响矩阵建立了多轴振动系统输入输出之间的数学模型。通过数值仿真的方法,研究了多轴振动试验中传递函数估计的方法,针对不同激励信号组合、不同估计算法和使用多次平均技术情况下进行了数值模拟,并对结果进行了分析。可以为多轴振动试验控制系统的研究提供参考。
This paper discusses various methods for frequency response matrix estimation in pre-tests of multi-axis vibration test control system through numerical simulation,in which a number of independent random excitation signals are used to drive the multi-axis system,and H1 estimate algorithm and over 20 times average are employed for a better result.