From follett at ece.msstate.edu Fri Mar 5 12:08:52 2010 From: follett at ece.msstate.edu (Randolph F. Follett) Date: Fri Mar 5 12:08:43 2010 Subject: [ece4923] ECE 4923/6923 - Lab Report for Lab 2 Message-ID: <7.0.1.0.2.20100305120734.087c5b40@ece.msstate.edu> I have so far received two lab reports. I responded to the person who sent each of them, so if you have sent one and have NOT received a verification from me, let me know. Otherwise, please send in the reports today, unless you ask for and are granted an extension. Randy Follett ----------------------------------------------------------------------------------------- Randolph F. Follett, Ph.D., P.E. Assistant Professor Department of Electrical and Computer Engineering Mississippi State University Box 9571 406 Hardy Rd Office: 662-325-3073 Mississippi State, MS 39762-9571 FAX: 662-325-2298 e-mail: follett@ece.msstate.edu ------------------------------------------------------------------------------------------ From follett at ece.msstate.edu Mon Mar 22 17:10:33 2010 From: follett at ece.msstate.edu (Randolph F. Follett) Date: Mon Mar 22 17:09:11 2010 Subject: [ece4923] ECE 4923/6923 - Homework answers for part 1 of Chapter 13 Message-ID: <7.0.1.0.2.20100322170804.07af5908@ece.msstate.edu> Please note that the answers for Part 1 of the Chapter 13 homework are now available online. Due to a slight change in coverage from previous years, the answers shown go through problem 17, which is NOT part of the material that will be on the quiz. So, do not worry about needing to try to work that problem yet. Randy Follett ----------------------------------------------------------------------------------------- Randolph F. Follett, Ph.D., P.E. Assistant Professor Department of Electrical and Computer Engineering Mississippi State University Box 9571 406 Hardy Rd Office: 662-325-3073 Mississippi State, MS 39762-9571 FAX: 662-325-2298 e-mail: follett@ece.msstate.edu ------------------------------------------------------------------------------------------ From follett at ece.msstate.edu Wed Mar 24 16:34:08 2010 From: follett at ece.msstate.edu (Randolph F. Follett) Date: Wed Mar 24 16:32:37 2010 Subject: [ece4923] ECE 4923/6923 - Nyquist plots in MATLAB Message-ID: <7.0.1.0.2.20100324162342.0764f698@ece.msstate.edu> Please note that I specified the dnyquist command recently in class, which used to be the appropriate command for a discrete time nyquist plot, rather than the more general nyquist command, which now handles both continuous and discrete system analysis. If you use the older dnyquist, you cannot use a system construction like sysd=tf(num,den,T) in the argument list. You would need to use the numerator and denominators, along with the sampling period in the argument list. Of course, at any time when you run into trouble in MATLAB, it is reasonable to use the help system to find out the details. If you look at the results from "help nyquist", you will see that it does handle discrete time cases, as well as SYS descriptions of a system. Also, note that if you type in "which dnyquist", you will see that it is in the "obsolete" toolbox, rather than the controls toolbox, which is a hint that it is probably not the one you want to use. Randy Follett ----------------------------------------------------------------------------------------- Randolph F. Follett, Ph.D., P.E. Assistant Professor Department of Electrical and Computer Engineering Mississippi State University Box 9571 406 Hardy Rd Office: 662-325-3073 Mississippi State, MS 39762-9571 FAX: 662-325-2298 e-mail: follett@ece.msstate.edu ------------------------------------------------------------------------------------------