机械振动分析_机械振动建模_从物理模型到数学分析模型_matlab

>>program1 Fourier series expansion of the function x(t) Data: Number of data points in one cycle = 12 Number of Fourier Coefficients required = 5 Time period = 1.200000e-001 Station i Time at station i: t(i) x(i) at t(i) 1 1.000000e-002 2.000000e+004 2 2.000000e-002 3.400000e+004 3 3.000000e-002 4.200000e+004 4 4.000000e-002 4.900000e+004 5 5.000000e-002 5.300000e+004 6 6.000000e-002 7.000000e+004 7 7.000000e-002 6.000000e+004 8 8.000000e-002 3.600000e+004 9 9.000000e-002 2.200000e+004 10 1.000000e-001 1.600000e+004 11 1.100000e-001 7.000000e+003 12 1.200000e-001 0.000000e+000 Results of Fourier analysis: azero=6.816667e+004 values of i a(i) b(i) 1 -2.699630e+004 8.307582e+003 2 1.416632e+003 3.608493e+003 3 -5.833248e+003 -2.333434e+003 4 -5.834026e+002 2.165061e+003 5 -2.170284e+003 -6.411708e+002