From follett at ece.msstate.edu Fri Mar 2 08:13:47 2007 From: follett at ece.msstate.edu (Randolph F. Follett) Date: Fri Mar 2 08:19:49 2007 Subject: [ece4923] ECE 4923/6923 - File for Lab Procedure Message-ID: <20070302141351.DGRO1537.ibm65aec.bellsouth.net@eagle.ece.msstate.edu> For those of you who didn't copy all of the files related to the lab procedure, I am enclosing the file feedback.vi, which is required for today's lab. (The other three .vi files were for the debugging part of the experiment.) Randy Follett ----------------------------------------------------------------------------------------- Randolph F. Follett, Ph.D., P.E. Assistant Professor Department of Electrical and Computer Engineering Mississippi State University Box 9571 Office: 662-325-3073 Mississippi State, MS 39762-9571 FAX: 662-325-2298 e-mail: follett@ece.msstate.edu ------------------------------------------------------------------------------------------ -------------- next part -------------- A non-text attachment was scrubbed... Name: Feedback.vi Type: application/octet-stream Size: 20872 bytes Desc: not available Url : http://www.ece.msstate.edu/pipermail/ece4923/attachments/20070302/8ea9f81f/Feedback-0001.obj From follett at ece.msstate.edu Mon Mar 5 11:10:22 2007 From: follett at ece.msstate.edu (Randolph F. Follett) Date: Mon Mar 5 13:06:14 2007 Subject: [ece4923] ECE 4923/6923 - Prob. 12.21 and .m file Message-ID: <20070305171023.30DCA52C71F@zimbra.ece.msstate.edu> As promised, here are the two files... Randy Follett ----------------------------------------------------------------------------------------- Randolph F. Follett, Ph.D., P.E. Assistant Professor Department of Electrical and Computer Engineering Mississippi State University Box 9571 Office: 662-325-3073 Mississippi State, MS 39762-9571 FAX: 662-325-2298 e-mail: follett@ece.msstate.edu ------------------------------------------------------------------------------------------ -------------- next part -------------- A non-text attachment was scrubbed... Name: P12_21_desc.pdf Type: application/pdf Size: 36247 bytes Desc: not available Url : http://www.ece.msstate.edu/pipermail/ece4923/attachments/20070305/d484ea34/P12_21_desc-0001.pdf -------------- next part -------------- % Define continuous system, with both states shown as outputs. % This effectively adds the ability to show each state in plots. % The true output is state v1. Ac=[0 1 ; 0 0 ]; Bc=[0 ; 1]; Cc=[1 0; 0 1]; Dc=[0 ; 0]; 'Continuous system state space description' Csys=ss(Ac,Bc,Cc,Dc) 'Hit any key to continue...' pause % Now we create a discrete version of this, including both states % as outputs. Note that the true output is state x1. 'Discrete system state space description' Dsys1=c2d(Csys,0.1) 'Hit any key to continue...' pause % Now define the "brute force" system description. Modify the % output matrix to include each state as an output, plus the % actual system output as the third output. 'Alternative discrete system state space description' Dsys2=ss([0 1 ; -1 2],[0 ; 1],[1 0 ; 0 1 ; .005 .005],[0 ; 0 ; 0],.1) 'Hit any key to continue...' pause 'Plot the continuous system response' pause step(Csys,5) hold; 'Plot the discrete system response on the same axes.' pause step(Dsys1,5) 'Plot the alternate discrete system response on a separate figure' pause figure step(Dsys2,5) From follett at ece.msstate.edu Wed Mar 7 14:49:15 2007 From: follett at ece.msstate.edu (Randolph F. Follett) Date: Wed Mar 7 14:49:18 2007 Subject: [ece4923] ECE 4923/6923 - Chapter 12 homework Message-ID: <20070307204916.0A4FE52C74E@zimbra.ece.msstate.edu> After class today, a question was raised concerning the zeros of the functions in Problem 12.3. I have gone back through and double-checked the answers given and they appear to be the correct answers. If any of you have some specific numbers that you can send (your answers) I will be glad to see what I can figure out. One comment about the zeros however, is that on the (a), (b) and (c) parts of the problem, there are not any finite zeros, so there aren't any listed in the answers. Randy Follett ----------------------------------------------------------------------------------------- Randolph F. Follett, Ph.D., P.E. Assistant Professor Department of Electrical and Computer Engineering Mississippi State University Box 9571 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 Fri Mar 23 10:58:29 2007 From: follett at ece.msstate.edu (Randolph F. Follett) Date: Fri Mar 23 10:58:32 2007 Subject: [ece4923] ECE 4923/6923 - Homework information Message-ID: <20070323155829.8F7FE52C71E@zimbra.ece.msstate.edu> The answer given for problem 12.15 is correct. If you take the D(z) as we found in class, and then compute G(z), the G(z) has a factor of 0.2 in the numerator (from the T). So, when you multiply them together, 0.5x0.2 gives 0.1. Randy Follett P.S. The Chapter 13 answers (for the part we have covered) are now posted, as well. ----------------------------------------------------------------------------------------- Randolph F. Follett, Ph.D., P.E. Assistant Professor Department of Electrical and Computer Engineering Mississippi State University Box 9571 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 Tue Mar 27 14:38:57 2007 From: follett at ece.msstate.edu (Randolph F. Follett) Date: Tue Mar 27 14:39:00 2007 Subject: [ece4923] ECE 4923/6923 - Chapter 13 HW - correction Message-ID: <20070327193858.0491852C7B3@zimbra.ece.msstate.edu> Please note that the lower bounds on K for Problem 13.2, part (a) were left off. This has been corrected in the answers as posted on the webpage. For T = 1 sec., -2 < K < 2.6261 For T = 0.1 sec., -2 < K < 20.067 For continuous, -2 < K Let me know if you see any other problems with the answers as shown. Randy Follett ----------------------------------------------------------------------------------------- Randolph F. Follett, Ph.D., P.E. Assistant Professor Department of Electrical and Computer Engineering Mississippi State University Box 9571 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 Tue Mar 27 15:34:20 2007 From: follett at ece.msstate.edu (Randolph F. Follett) Date: Tue Mar 27 15:34:24 2007 Subject: [ece4923] ECE 4923/6923 - Another homework answer correction Message-ID: <20070327203422.B2EAE52C78D@zimbra.ece.msstate.edu> Also, on Problem 13.1(b), there was an extra negative sign in the provided answer. It should have been: c(k)=0.333[1-(0.728)k]u(k) Randy Follett ----------------------------------------------------------------------------------------- Randolph F. Follett, Ph.D., P.E. Assistant Professor Department of Electrical and Computer Engineering Mississippi State University Box 9571 Office: 662-325-3073 Mississippi State, MS 39762-9571 FAX: 662-325-2298 e-mail: follett@ece.msstate.edu ------------------------------------------------------------------------------------------ -------------- next part -------------- An HTML attachment was scrubbed... URL: http://www.ece.msstate.edu/pipermail/ece4923/attachments/20070327/c7449de0/attachment.html From follett at ece.msstate.edu Tue Mar 27 17:40:49 2007 From: follett at ece.msstate.edu (Randolph F. Follett) Date: Tue Mar 27 17:40:54 2007 Subject: [ece4923] Re: ECE 4923/6923 - Another homework answer correction In-Reply-To: <20070327203422.B2EAE52C78D@zimbra.ece.msstate.edu> References: <20070327203422.B2EAE52C78D@zimbra.ece.msstate.edu> Message-ID: <20070327224051.B7F2552C6FD@zimbra.ece.msstate.edu> Okay, hopefully this is the last correction. On problem 12.3, they forgot to account for the sampling period in the location of the zeros, so the actual answer for 12.3 (d) should be -3.4112 +/- jn15.7 This has been fixed in the published answers on the website. Randy Follett At 03:34 PM 3/27/2007, Randolph F. Follett wrote: >Also, on Problem 13.1(b), there was an extra negative sign >in the provided answer. It should have been: > >c(k)=0.333[1-(0.728)k ]u(k) > >Randy Follett > >----------------------------------------------------------------------------------------- > >Randolph F. Follett, Ph.D., P.E. >Assistant Professor >Department of Electrical and Computer Engineering >Mississippi State University > >Box 9571 Office: 662-325-3073 >Mississippi State, MS 39762-9571 FAX: 662-325-2298 > >e-mail: follett@ece.msstate.edu > >------------------------------------------------------------------------------------------ ----------------------------------------------------------------------------------------- Randolph F. Follett, Ph.D., P.E. Assistant Professor Department of Electrical and Computer Engineering Mississippi State University Box 9571 Office: 662-325-3073 Mississippi State, MS 39762-9571 FAX: 662-325-2298 e-mail: follett@ece.msstate.edu ------------------------------------------------------------------------------------------ -------------- next part -------------- An HTML attachment was scrubbed... URL: http://www.ece.msstate.edu/pipermail/ece4923/attachments/20070327/db48c297/attachment.html From follett at ece.msstate.edu Thu Mar 29 14:56:57 2007 From: follett at ece.msstate.edu (Randolph F. Follett) Date: Thu Mar 29 14:56:59 2007 Subject: [ece4923] ECE 4923/6923 - Friday, March 30, 2007 Message-ID: <20070329195657.9689652C745@zimbra.ece.msstate.edu> Please remember that we are not going to be meeting class tomorrow (Friday) since we are having lab tomorrow afternoon. We will be working on the data acquisition portion of the material. I was recently asked if I could make the presentation available, and have placed a copy of it on my webpage for this course. Please let me know if you have any difficulty accessing it, if you are interested in looking at it again. Randy Follett ----------------------------------------------------------------------------------------- Randolph F. Follett, Ph.D., P.E. Assistant Professor Department of Electrical and Computer Engineering Mississippi State University Box 9571 Office: 662-325-3073 Mississippi State, MS 39762-9571 FAX: 662-325-2298 e-mail: follett@ece.msstate.edu ------------------------------------------------------------------------------------------