Non-varying variable in Constrained Nonlinear Optimization

I have built a labview VI so as to execute an optimization problem that I had previously solved using Matlab's fmincon. The transition wasn't difficult and the VI mostly works except for one variable.
The VI is expected to optimize an array of four variables: the first three will be input to a control systems function, and the last is converted to int to be used for array allocation (think of it as a time switch for the second and the third variable). When I run the code, that last variable doesn't change, not by one iota. To confirm this, I set a breakpoint with a probe and watch as Labview would modify the three other variable but still has the fourth variable at 140.00000 . I've tried varying the criteria and settings, but to no avail.
What am I missing, or is this somehow normal?
Solved!
Go to Solution.

not all optimization routines use partial derivatives (hence "non-linear")
I've attached the main file that decouples the variables. The resulting output will be the input to a control system whose output will be compared to a specific predetermined plot.
Attachments:
sequenceToRateError.vi ‏18 KB
Times.ctl ‏5 KB

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                             str_date="0"+new Integer(access_date).toString();
                        else
                             str_date=new Integer(access_date).toString();
                        if(access_time<100)
                             str_time="0"+new Integer(access_time).toString();
                        else
                             str_time="0"+new Integer(access_time).toString();
                   }catch(Exception e){
                        //System.out.print("Exc"+e.getMessage());
                        //return false;
                   finally{
                             if(rs!=null){
                                  try{     rs.close();}catch(Exception e){}
                             if(rs2!=null){
                                  try{     rs2.close();}catch(Exception e){}
                             if (stmt!=null){
                                  try{     stmt.close();}catch(Exception e){}
                             //if (conn!=null){
                                  try{     conn.close(); }catch(Exception e){}
                        //return back;
    /*     public static void main(String[] args)
              System.out.println("Hello World!");

    Hello jjaekim,
    if rs is a class variable (the same value for all objects),
    try this (more likely to be the right solution) :
    static ResultSet rs;
    instead of :
    ResultSet rs;
    if rs has a different values in different objects,
    then you should add the object name when using it like this :
    myObject.rs or this.rs

  • Another question: non-static variable super cannot be referenced from ...?

    class a
    int i;     
    int j=2;
    a(int i)
    this.i=i;
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    b test=new b();
    System.out.print(test.i);
    test.j=1;
    System.out.print("test.j="+test.j);
    System.out.print("super.j="+super.j);
    b.java:28: non-static variable super cannot be referenced from a static context
    System.out.print("super.j="+super.j);
    ^
    1 error
    thanks

    You cannot call "super" from a static context. Just like you can't use "this" or call any non-static methods in a static context.
    Try with test.super.j, although I'm not sure if it works. But you can call super.j in a non-static context, e.g. in your constructor, or in a non-static method.

  • "non-static variable cannot be referenced from a static contex"

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    public class bokningsmeny
    Bokning[] bokningslista = new Bokning[1000];
    String fornamn;
    String efternamn;
    String civilstand;
    String adress;
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    String telefonnr;
    int regnr;
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    public static void main(String[] args)
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    System.out.println("\nMeny");
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    System.out.println("7. S&ouml;k personen vis personnummer och &auml;ndra inkomst");
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    ++++if(cont
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    ++++fornamn = bokningslist
    +++++efternamn = boknin
    ++++++personnr
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    ++++<e<br />+++++++System.out.pri<br<br />+++++<em<br />+++++++System.out.println("\nVilket sokresultat vill du v&bdquo
    ++++<<br />+++++++if(case2ch
    +++++++System.ou
    +++<e<<br />+++<em<br />++++
    ++<em<br />+++++++System.out.p
    +++++<e<br />+++<<br<br /<br />+++++++System.out.printl
    +++<em<br />+++++<em<br />++
    <e<br />++++++++Sy
    +++++
    ++++++<e<br /><em<br />++++++++<<br />+++++<e<br />+++
    +++<<br />+++++++++else if(case11exit != 'y' &<br<br />+<<br />++++
    ++++
    +++++
    ++++<e<br />+++++++
    ++++<em<br />+++++
    +++<em<br />+++++<em<br />++++<<br />++++++
    ++++<e<br />+++++++<e<br />++<em<br />++++<e<br />+++<<br />+++++++++System.out.println("\n\nNamn: " + fornamn + "
    ++++++++++ "\nHemadress: " + adr
    ++++++++++ telefon
    +<<br />+++++++++Syste
    ++++<em<br />+++++++++if(correct
    <em<br />++<em<br />++<<br />++++<e<br /><<<br /><e<br />+++++++++I have another file with the Bokning.java class in it but I know for sure that its error free. Notice that I'm not nearly done with the program, theres like 10 more 'cases' to be created but I dont w
    ++<em</p>                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       

    Your code goes "+" crazy there, but here is your problem:
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    meinFahrzeug.leistung = 300;
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    System.out.println("Fahrzeug Leistung: " + meinFahrzeug.leistung);
    class Auto
    public String name;
    public int erstzulassung;
    public int leistung;
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    could somebody tell me why.
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    Thanks,
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