http://www.mathworks.com/matlabcentral/newsreader/view_thread/252582 MATLAB Central Newsreader - system indentification: residuals analysis Feed for thread: system indentification: residuals analysis en-us &copy;1994-2012 by MathWorks, Inc. webmaster@mathworks.com MATLAB Central Newsreader http://blogs.law.harvard.edu/tech/rss 60 MathWorks http://www.mathworks.com/images/membrane_icon.gif Sun, 31 May 2009 20:11:01 -0400 system indentification: residuals analysis http://www.mathworks.com/matlabcentral/newsreader/view_thread/252582#653679 pietro Hi,<br> <br> I have to estimate a transfer function parameters from frequency response data and i have used the arx command. I have plotted the models residuals but i don't understand if the model is good. In this link there are the gain frequency response and the model residual. <br> <br> <a href="http://img10.imageshack.us/img10/6499/residuals.jpg">http://img10.imageshack.us/img10/6499/residuals.jpg</a>