Is there a limitation in state space series?

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• Representation of State-space Discrete in FPGA

  Hi all

  My goal is to simulate a State-space model is the FPGA cRIO (order to use an observer).

  I am currently trying the simulate on my computer without using the VI state space discrete Control Design and Simulation Toolbox (since there is no model of State-space for the FPGA VI). However my representation of the discrete state-space model does not work.

  It is under a continuous state space model:

  

  Then I got the model discretized (using the zero-order-hold and t = 0.01 s):

  

  Here are the State-space discretized model I designed (to develop a similar model in the FPGA):

  

  This is the VI space of discrete states that I use to compare the results:

  

  The chart plot the State X 1, which is growing indefinitely. However, it should look like a first order, as you can see:

  

  I don't understand why the State X 1 progresses like this, I know I'm missing something (saturation of integration?).

  Thanks in advance

  Kind regards!

  PS: Does anyone know if application other than the PID controller is feasible in the FPGA cRIO? I also have to wonder about the inversion of the matrix if I want to use the Kalman gain in my observer.

  PS2: I apologize for my disorganized/not clear Labview files, I start with him.

  Hello

  I think that the problem can be caused by errors in your matrices A and B of rounding.  Have you tried to make her show values more accurately?

  MATLAB calculates these values as: A = [0.995, 0.009925; 0 0.99], B = [2.488e - 5; 0.004975]

  Kind regards

  Ian

• Is there a limitation of length of sql in a record group?

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  Developer 10g suit.

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  Craig...

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  ckucharek wrote:

  It is not supposed to because I have enough memory on my iPad.

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  If you are unable to make a backup of your iPhone, iPad or iPod touch - Apple Support iTunes

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  I can do the manual backup on the PC of my wife, and she has more than 500 GB of available and uses the same version of iTunes, but on Windows 7.  Any ideas?

  Is the part of the computer which, by default, stores the backup on a smaller partition by accident?

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• The amplitude of the frequency. Bode CD. State space

  Hi all

  Gently, I have a simple model that gives me a Bode phase and magnitude, using the block 'CD Bode'. AFAIK, this block takes the representation of the State space and assesses the frequency and scale of the system.

  Can I change the value of the Phase or amplitude Bode? by means change the input signal that bode uses to evaluate the response of the State space?

  Note: The entry, I want to say here is the value of the sinusoidal signal that Bode uses to give the phase and the amplitude of the State space.

  Thank you

  The works of Bode CD functions as a "sweep" of all frequencies and who you are. The algorithm is not a frequency controlled, he comes back the entire spectrum. You can't just get a specific frequency. However, if you use the fuction 'Assess frequency of CD', you can provide the model and frequency, and this will give you the specific Mag/Phase for this frequency. This example shows how to do this in LabVIEW:

  C:\Program Files (x 86) \National Instruments\LabVIEW 2014\examples\Control and Simulation\Control Design\Time Analysis\CDEx Lin Simulation and stable State.vi

  Now, if you want to 'form' your frequency, so you can create another model, connect with each other and try to change the output frequency. This example shows how to do this:

  C:\Program Files (x 86) \National Instruments\LabVIEW 2014\examples\Control and Simulation\Control Design\Frequency Analysis\CDEx frequency analysis

  If you just want to "simulate" the response of the signal to a specific sine wave, then you will need to you another function in the time domain palette called "linear Simulation CD. With this, you can generate a specific sine wave and you can see his behavior in the time domain. Here is an example:

  C:\Program Files (x 86) \National Instruments\LabVIEW 2014\examples\Control and Simulation\Control Design\Time Analysis\CDEx sine wave with Mathscript.vi

  Hope this helps,

• Closing state space control loop

  Hello

  I am a student MYSELF and has been assigned to a project closing a loop of a rotary inverted pendulum control.

  I have all the mathematical equations and state space design.

  I don't have any idea on how to apply the system in closed loop state space in Labview (10)

  any suggestion where start/examples?

  Thank you very much

  Gil,

  Hello Gil,.

  A great way to implement and simulate your SS system is to use the Module LabVIEW Control Design and Simulation.

  Here is a short list of references on modeling in LabVIEW

  Basics of Control Design and Simulation in LabVIEW
  http://zone.NI.com/DevZone/CDA/tut/p/ID/10685

  Tutorials for LabVIEW controls

  http://zone.NI.com/DevZone/CDA/tut/p/ID/6368

  Once you have installed module, it is an example of navigation in LabVIEW on the inverted pendulum.

  I hope this helps!

• Example of a State-space?

  Hello;

  I'm a grad student and I got my presentation tomorrow and really I need your comments.

  I select a topic which is the ANALYSIS of the STATE-SPACE.

  The attached file has my file vi.

  I have dwsign a simple survey. control loop of l which has a transfer works then I him I convert it to a SS I do analysis.

  Appreciate your quick response.

  also try to clean your face a bit. use the tab containers or make it to where the person doesn't have to scroll down to view your items.

  and use the suggestions of Altenbach.

• Why is there a limited number of changes in the region for the dvd player

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  Thanks Ralph

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• Draw a model of State-space

  Hello!

  I'm doing a project and I'm stuck and I am in need for some help.

  I made a State-space model that I use for this project. I used Matlab (with and without simulink) to simulate this model and to trace its behavior. But when I want to do this in LabVIEW, I'm stuck.

  I don't want to use Mathscript, because, while it would in Matlab.

  Does anyone have any ideas of how I can simulate and draw my state space model in the parameters of the matrix that I?

  ________________

  Look at the setting, I want to draw x.

  Well, you can check if you have by looking meny help > about LabVIEW... You should see this icon if you have the CD & SIM module (of course, the logo must be 2009 in your case):

  

  Again, if you haven't and you're academic, try to talk to your administrator and check its availability. If you are a student, the student version of LabVIEW also have this software.

  Doesn't depend on any other software other than LabVIEW MathScript RT Module (not the "Matlab Script node") and it allows to compile m-code directly in LV in general, its speed depends on the type of code you have.

  CD & SIM module can be considerably fast, but again, it depends on what kind of code you are using. The function of the State space in control and the Simulation loop has good performance compared to the linear Simulation.vi CD.

• (Control design and Simulation) State-space block don't gives result

  I tried and tried but failed to get the State-Space block module to give me a graph / output.

  I have no idea what the problem is and I hope someone can help me. Numbers and calculations work in Matlab (Simulink) but I can't simulate in labview.

  Anyone have any ideas?

  The problem is that you are assuming that LabVIEW runs left to right. Stream does not work that way. Your code like this:

  

  does not say LabVIEW He must run everything from left to right. What happens is that it runs to the 3 'island' of the code in parallel and, in this case, it will be "empty" values You must remove the local variables to do this job and paradigm of data flow runs your code from left to right, as you wish. Here is the code:

  

  Also, one last thing. Your contribution to the Simulation of the 'linear' CD is equal to zero all the. This means that you try to input zero linear system, which will give you a result zero in the answer. You probably don't want that since zero as input gives you more information. If you want to see how system will reset after initial conditions, you must use 'CD Initial Response. " Or you need to change the input to the system signal. Please study this shipping example to understand how to use the linear Simulation and initial response:

  C:\Program Files (x 86) \National Instruments\LabVIEW 2012\examples\Control and Simulation\Control Design\Time Analysis\CDEx time domain analysis

  I hope this helps...

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  Hello

  1. Where exactly the watch 0 CD\DVD drive space free?

  I suggest you try to execute this fixit and see if it helps:

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