Matlab: Concatenating single-channel models to a multi channel model with System Identification Toolbox -


i have following problem: have simo system , want apply subspace identification algorithm (moesp in specific case) using matlab function n4sid (which performs subspace identification of state space models) of system identification toolbox. due large amount of data , outputs not possible feed algorithm data @ once more gradually more suitable.

consider have 2 outputs 1 single input: perform subspace identification of 2 siso systems independently , concatenate them obtain final , complete model having same order of previous models: possible default system identification toolbox of matlab? have reference? have asked on matlab forums no answer plus read user's guide of system identification toolbox.

// example: in = excitation signal. out1, out2 = output signals // ts = sampling interval signals 0 mean // putting data iddata format  dat1 = iddata(out1,in,ts);  dat2 = iddata(out2,in,ts);  //considering model order of 10 m1 = n4sid(dat1,10); // m1 = siso model output out1 , input in m2 = n4sid(dat2,10); // m2 = siso model output out2 , input in  // estimating model 2 outputs , 1 input: dat = iddata([out1 out2], in,ts); m = n4sid(dat,10); // m = simo model outputs out1 , out2 , input in

looking @ example: how m m1 , m2 without performing estimation again?

i have related question: subspace algorithms based on l-q decomposition of matrix. suppose have 2 matrices decomposed example a1, a2. there way in matlab decomposition of matrix obtained concatenating a1 a2

a =[a1, a2]

from single decompositions?(especially interested in l matrix) in advance


Comments

Post a Comment

Popular posts from this blog

Android layout hidden on keyboard show -

i have strange problem layout. when tap on edittext , keyboard shown edittext stay on bottom , when tap on to hide keyboard , keyboard hides , edittext go should when want input text. when tap again, keyboard shown , edittext goes down behind keyboard... <relativelayout android:layout_width="match_parent" android:layout_height="match_parent" > <scrollview android:layout_width="match_parent" android:layout_height="fill_parent" android:above="@+id/rl_commands"> <textview android:layout_width="match_parent" android:layout_height="wrap_content"/> </scrollview> <relativelayout android:layout_width="match_parent android:layout_height="24dp" android:id="@+id/rl_commands" android:alignparentbottom="true">
Read more

google app engine - 403 Forbidden POST - Flask WTForms -

i have flask application running on google app engine. trying submit form built using wtform , keep getting following error. 403 forbidden: don't have permission access requested resource. either read-protected or not readable server. location.html (part of code) <form method=post action="/home/location"> .... <button type="submit" class="btn btn-primary" value="submit"> directions </button> </form> main.py @app.route('/home/location', methods=['post', 'get']) def location(): form = cfcdirections.direction(request.form) print(request.method) if request.method == 'post' , form.validate(): print("after if") directions = cfcdirections() street_no = directions.no street = directions.street suburb = directions.suburb postcode = directions.postcode
Read more

c - Why would PK11_GenerateRandom() return an error -8023? -

i looking through internet trying find source of pk11_generaterandom() function see why function fail. have program uses function when moved new flavor of linux, fails after forking ( fork() ) since not believe there problem nss, suspect doing incorrectly disregarded in older versions of linux new 1 there issue. the openssl package same on 'good' , 'bad' server: openssl 0.9.8e-fips-rhel5 01 jul nss rpm differs though. 'good' has nss-3.12.2.0-2.el5 and bas has version nss-3.15.3-4.el5_10 the 'good' server uses quite obsolete linux: linux 2.6.18-128.el5 #1 smp wed jan 21 08:45:05 est 2009 x86_64 x86_64 x86_64 gnu/linux enterprise linux enterprise linux server release 5.3 (carthage) red hat enterprise linux server release 5.3 (tikanga) the 'bad' server newer: linux bad 2.6.18-371.4.1.el5 #1 smp wed jan 29 11:05:49 pst 2014 x86_64 x86_64 x86_64 gnu/linux oracle linux server release 5.10 red hat enterprise linux server release
Read more