WhatsE
Automotive
- Feb 26, 2012
- 5
I have a suspension model in Adams/view. I get the Transfer Function (TF)with 2 method：
1. via adams/vibration with defining the input and output channel I want.
2. In adams/view, I run a simulation under the same input, then I export the input and response (which is the output) data to a txt file. I import the txt file into Matlab to calculate the transfer function using the formula H(w)=FFT(ouput)/FFT(input).
But the problem is that the TF in 2 method only share the same shape (reach peak at the same frequency), but have huge difference in magnitude (almost 10000 times).
The attachment is the result I get.
how does this come? Is there anywhere I made a mistake ?
Tongji University of Shanghai,China
Email: lcy111989@gmail.com
1. via adams/vibration with defining the input and output channel I want.
2. In adams/view, I run a simulation under the same input, then I export the input and response (which is the output) data to a txt file. I import the txt file into Matlab to calculate the transfer function using the formula H(w)=FFT(ouput)/FFT(input).
But the problem is that the TF in 2 method only share the same shape (reach peak at the same frequency), but have huge difference in magnitude (almost 10000 times).
The attachment is the result I get.
how does this come? Is there anywhere I made a mistake ?
Tongji University of Shanghai,China
Email: lcy111989@gmail.com
