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State derivatives returned by S-function 'XX' in 'XXX' during flag=1 call must be a real vector of length 6

im using a s-function to build a motor model.
there are 3 inputs,6 State derivatives and 6 outputs.
the simulation diagnostics point out "State derivatives returned by S-function 'XX' in 'XXX' during flag=1 call must be a real vector of length 6" .who can tell me which kind of mistake possiblely i made? im going to be mad~~~ @.@ thx!
0
3/11/2011 3:46:04 AM
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"dumpoing001 " <yuxiao1224@hotmail.com> wrote in message 
news:ilc5ts$fvg$1@fred.mathworks.com...
> im using a s-function to build a motor model.
> there are 3 inputs,6 State derivatives and 6 outputs.
> the simulation diagnostics point out "State derivatives returned by 
> S-function 'XX' in 'XXX' during flag=1 call must be a real vector of 
> length 6" .who can tell me which kind of mistake possiblely i made? im 
> going to be mad~~~ @.@ thx!

I would examine your S-function and ensure that the state derivatives 
returned when flag = 1 is a real vector of length 6 and not a complex 
vector, a matrix, or a vector of length other than 6.

-- 
Steve Lord
slord@mathworks.com
To contact Technical Support use the Contact Us link on 
http://www.mathworks.com 

0
slord (13689)
3/11/2011 2:40:31 PM
"Steven_Lord" <slord@mathworks.com> wrote in message <ildc88$ki$1@fred.mathworks.com>...
> 
> 
> "dumpoing001 " <yuxiao1224@hotmail.com> wrote in message 
> news:ilc5ts$fvg$1@fred.mathworks.com...
> > im using a s-function to build a motor model.
> > there are 3 inputs,6 State derivatives and 6 outputs.
> > the simulation diagnostics point out "State derivatives returned by 
> > S-function 'XX' in 'XXX' during flag=1 call must be a real vector of 
> > length 6" .who can tell me which kind of mistake possiblely i made? im 
> > going to be mad~~~ @.@ thx!
> 
> I would examine your S-function and ensure that the state derivatives 
> returned when flag = 1 is a real vector of length 6 and not a complex 
> vector, a matrix, or a vector of length other than 6.
> 
>function [sys,x0,str,ts] = LIM(t,x,u,flag,p,Lm,Lr,Ls,Rs,Rr,D,tao,M)
 switch flag,
  case 0,
    [sys,x0,str,ts]=mdlInitializeSizes;
  case 1,
    sys=mdlDerivatives(t,x,u,p,Lm,Lr,Ls,Rs,Rr,D,tao,M);
  case 2,
    sys=mdlUpdate(t,x,u);
  case 3,
    sys=mdlOutputs(t,x,u);
  
  case 9,
    sys=mdlTerminate(t,x,u);
  otherwise
    error(['Unhandled flag = ',num2str(flag)]);

end


function [sys,x0,str,ts]=mdlInitializeSizes

sizes = simsizes;

sizes.NumContStates  = 6;
sizes.NumDiscStates  = 0;
sizes.NumOutputs     = 6;
sizes.NumInputs      = 3;
sizes.DirFeedthrough = 1;
sizes.NumSampleTimes = 1;   

sys = simsizes(sizes);
x0  = [0];
str = [];
ts  = [0 0];

function sys=mdlDerivatives(t,x,u,p,Lm,Lr,Ls,Rs,Rr,D,tao,M)
dx(1)=(3*p*pi^2)/(4*M*tao^2)*(Lm*(1-x(6))/(Lr-Lm*x(6))*x(2)*x(5)-Lm/Lr*x(3)*x(4)+(Lm^2/Lr-Lm^2*(1-x(6))/(Lr-Lm*x(6))-Lm*x(6))*x(4)*x(5))-pi*u(1)/(M*tao);
dx(2)=-Rr*(1-x(6))/(Lr-Lm*x(6))*x(2)-x(1)*x(3)+Rr*(Lm-Lr*x(6))*x(4)/(Lr-Lm*x(6));
dx(3)=x(1)*x(2)-Rr*x(3)/Lr+Rr*Lm*x(5)/Lr;
dx(4)=-(Rr*(Lm-Lr*x(6))*x(2)/(Lr-Lm*x(6))^2+x(1)*Lm*(1-x(6))*x(3)/(Lr-Lm*x(6))+((Rr-Lm*x(6)*(1-x(6)))/(Lr-Lm*x(6))-Rr*Lm*(1-x(6))*(Lm-Lr*x(6))/(Lr-Lm*x(6))^2-(Rs+Rr*x(6)))*x(4)+u(2))/(Lr-Lm*x(6)-Lm^2*(1-x(6))^2/(Lr-Lm*x(6)));
dx(5)=(-x(1)*Lm*x(2)/Lr+Rr*Lm*x(3)/Lr^2-(Rs+Rr*Lm^2/Lr^2)*x(5)+u(3))/(Ls-Lm^2/Lr);
dx(6)=(tao*Lr*x(1)-(exp(-(pi*D*Rr)/(tao*Lr*x(1))))*(pi*D*Rr+tao*Lr*x(1)))/(pi*D*Rr*x(1));
sys = dx;

function sys=mdlOutputs(t,x,u)
sys = [x(1);x(2);x(3);x(4);x(5);x(6)];

function sys=mdlUpdate(t,x,u)
sys = [];

function sys=mdlTerminate(t,x,u)
sys = [];
----------------------------
this is the M-file 
0
3/16/2011 6:42:04 AM
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No difference that I know of ... SAS has all sorts of things you can use as operators. LT,< LE,<= ne, ^=, ~=, <> in some contexts at least eq, = <<< these actually DO have a difference or two, particularly as relates to assignment I don't recall where the full list is, but http://support.sas.com/onlinedoc/913/getDoc/en/lrdict.hlp/a000202951.htm#a000290128has the list of them usable in WHERE statements (which, IIRC, is slightly greater than that of normal code, as it allows for SQL syntax in ways the rest of SAS does not). -Joe On Wed, Feb 11, 2009 at 4:52 PM, Duck-Hye Yang <dyang@chapinhall.org> wrote: > Hello, > What is the difference between '^=' and '~='? > > Thanks, > Duckhye > ...

getReport(..'hyperlinks','off')
I've just noticed folowing tiny bug: getReport(exception,'hyperlinks','off') still adds some links if exception has '.cause'. Example: ================================================== function f1 function fi3() error('error in fi3'); end function fi2() fi3(); end function fi1() try fi2(); catch main_exception exception1 = MException('M:id1','msg1'); exception1=exception1.addCause(main_exception); throw(exception1); end end try fi1 catch exception_ s=getReport(exception_, 'extended', 'hyperlinks', 'off') ; id=fopen('1.txt','w+'); fprintf(id,'%s',s); end end ================================================== Result: ---------------------------------------------------------------------------------------------------- Error using ==> f1>fi1 at 21 msg1 Error in ==> f1 at 32 fi1 Caused by: Error using ==> <a href="matlab: opentoline('f:\Igor\Documents\MATLAB\Test_projects\getReport\f1.m',5,0)">f1>fi3 at 5</a> error in fi3 ---------------------------------------------------------------------------------------------------- ...

'image' and 'imagesc'
Why is it, that 'image' and 'imagesc' change the y - direction of my data? Or an even more important question, how do I prevent them from doing so? This is the command I use: imagesc(x_vec,y_vec,rez_fld); with: x_vec = 3:0.5:7.5 y_vec = 1:-0.5:-1 rez_fld = size(x_vec) x size(y_vec) greetz, kai Kai: <SNIP wants it upside down... > Why is it, that 'image' and 'imagesc' change the y - > direction of my data... because: that's how you typically look at pics - top/left to bottom/right % now, img=load('clown'); imagesc(img.X); axis image; % -or- % axis ij; disp('change y'); pause; axis xy; % -or- % set(gca,'ydir','normal'); % then disp('get it all right...') pause; imagesc(flipud(img.X)); axis image; axis xy; % for more information help axis; us ...

'If' or 'Switch' or any ideas
Hello, I am trying to do something that didn't look hard at first, but ended up being a pain in the %$#. Here is my problem. I have three arrays. A={'cc', 'aa', 'gg'} B={'dd', 'ee', 'ff'} C={'bb', 'cc', 'dd', 'ff', 'aa', 'ee'} What I want to do is to see if the items from 'A' and 'B' are found in 'C'. And if so, I need to know which items are. Then, I want to assign a specific value to the items that are present in both arrays, something like if one item or more is found in 'C', assign the value '1', and if one item or more from 'B' is found in 'C', assign the value '2'. So in the end, I would like to have something like that: C={0 1 2 2 1 2}, since 'bb' was not found, 'cc' was found in 'A', 'dd' was found 'B', 'ff' was found 'B', 'aa' was found in 'A', and 'ee' was found in 'B'. I thought about using 'switch', but I don't know how I could 'test' for multiple items at the same time. Any ideas ? Thank you very much in advance for your precious insights, "JS " <jean-sebastien.provost@umontreal.ca> wrote in message news:iu0scc$hra$1@newscl01ah.mathworks.com... > Hello, > > I am trying to do something that didn't look hard at first, but ended up > being a pain i...

Re: '^=' and '~='? #9
On Thu, 12 Feb 2009 08:58:21 -0600, Joe Matise <snoopy369@GMAIL.COM> wrote: >Yeah, <> works in PROC SQL, wasn't sure about elsewhere... thanks for >confirmation! Didn't know about the MAX operator, that's interesting. .... hi, In proc SQL, I do get a note saying that: NOTE: The "<>" operator is interpreted as "not equals". In general, i find that we have different sas expressions, mostly identical one another. Still, there remain definite differences among all of these expressions: (1) data step expressions (2) where statement expressions (3) sql-expressions used in proc sql (4) macro expressions this is a less than ideal situation :-) but this may be an inevitable consequence of sas' being around for a long time. cheers, chang ...

what's this? '->'
All, I know that '->' is used in object oriented PHP, but I saw this in the Moodle code (www.moodle.org) $CFG->dbtype = 'mysql'; // mysql or postgres7 (for now) $CFG->dbhost = 'localhost'; // eg localhost or db.isp.com $CFG->dbname = 'moodle'; // database name, eg moodle $CFG->dbuser = 'root'; // your database username $CFG->dbpass = 'mypassword'; // your database password $CFG->prefix = 'mdl_'; // Prefix to use for all table names You can "echo $CFG->dbtype;" and get "mysql" This isn't calling functions from an object, rather seems to be applying properties to a new "object"??? There is no $something = new ClassName, so This is what I figure. Its been a while since I cooded PHP and have never seen this. This seems like a realy good way to apply a number of atttribs to a "variable" without having to create an array -- unless that is a shorthand way of creating an array... Thanks -Wes Yates On 11 Feb 2005 09:15:55 -0800, gmac63@charter.net wrote: >You can "echo $CFG->dbtype;" and get "mysql" > >This isn't calling functions from an object, rather seems to be >applying properties to a new "object"??? There is no $something = new >ClassName, so This is what I figure. If you use a variable as an object PHP automatically creates an object (I believe this...

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