Looping a clip and simulator queries

I have a project with a Menu with 3 items on separate buttons. Item 1 is an intro which I would like to loop until ready to play item 2 and 3. I have set end jump to this item in the inspector but it only
jumps to the main menu with this item selected. How do I loop it to play same clip continuosly?
Also, is there a way to get the simulator to fast forward to the end off clips to see if they behave as expected?
Any help appreciated

Make Track 1 your First Play. Then select Track 1 and set its End Jump to itself. This will cause it to loop endlessly. People will have to hit the menu button to exit out of the loop to the menu.
To "fast forward" you need to add a Chapter Marker near the end (NOT at the actual end) of each track.

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How to use Fuzzy Logic Controller for transfer function in labview control and simulation loop?

I am facing problem with fuzzy PD logic controller for transfer function in control and simulation loop.
Plz Help me in this regard...................
i have attache snapshot of my program
Attachments:
fuzzy in simulation loop.JPG ‏52 KB

Hi Sankhadip,
Sorry for the late response. I was looking at your code and
I noticed that the graph scale does not start from zero. That might be the
reason why you don't see the transient in the simulation. To change the scales
simply double click on the lower limit and set it to zero. If this is not the
expected results, can you please post the expected results, so we can see what are the
differences between the results . Also, you might be using different
solvers, and that gives different results as well.
Thanks and have a great day.
Esmail Hamdan | Applications Engineering | National
Instruments

Synchronize Control and Simulation loops

When simulating control systems with LV Control and Simulation loops, I often have multiple loops running at different rates. For example, I have a PWM loop running at 20 kHz, a data acquisition loop running at 100 kHz, and a control loop running at 10 kHz. How can I synchronize all of these loops so that they stay on the same time base? Obviously the master time base will need to be at least as fast as the fastest simulation loop.
I've tried synchronizing all loops to the 1 kHz clock (I'm running on Windows), but each loop runs one period per clock tick (e.g. my 20 kHz loop counts up 50us per clock tick, my 100 kHz loop counts up 10us per clock tick, etc). I need all of the loops to be synchronized to one master time base so the simulation time is identical in each loop, but each loop will be executed at a different rate.
Any thoughts?
Solved!
Go to Solution.

Hello,
A quick suggestion - why can't you run all three systems in a single simulation loop, but have different sample rates for the blocks for each system ?
Is your system entirely digital, or a mixture of continuous and digital - it may simplify things if you can convert everything to discrete time.
Hope this helps,
Andy Clegg
Consultant Control Engineer
www-isc-ltd.com

Resetting Integrator in Control and Simulation Loop

Hello,
I am trying to run a real-time simulation in Labview 14. I have prepared front panel controls and data flow such that I can reset the simulation to some preset initialization values upon clicking a button. However, I am not able to figure out how to reset the integrator in the control and simulation loop. Even after reinitialization of all the values, the integrators will overwrite the initialization values with whatever they were holding. Please help me find a way out.
Thanks

Please share what code you have so that we can see what you've tried and understand exactly what you're trying to do.

LOOPS PLAYBACK CLIPPING IN TIMELINE

Using Jam pack 'Symphony" loops I have noticed that some of the loops are corrupt AFTER placing them into the timeline. When I preview the loop its fine until I drop it into the timeline then clipping and mumbled feedback distorts the loop slightly. Is there something that can be done to rid of this annoying problem? I record to an external hard drive so that I have enough memory. Will reloading GB '08 or the Symphoy jam pack help with correcting the playback distortion of the track? FYI Im not using any strange reverb effects for it to sound like this.

Why can't he use caps? He can do anything he wants..
Damian, Friend of Frank who asked for help. and thats all your *** had to say??? I've been using Macs since the DARK DAYS of Apple Inc. so give my friend a break.

Dynamic text in looping movie clip

Hi,
I am looping a movie clip which has a dynamic text box. I
need to call data from XML and place the same in the Dynamic text
box as per the duplicated movie clip. how do i do that.
Thanks,
Ayush

on (release) {
_parent.frontFields.topTextArch.ph2TopTextBrush._visible =
false;
That is the script attached to my button. I can see the text
flash for a second when I push the button but it does'nt go away
because the looping movie clip just continually goes back to the
first frame and makes the ph2TopTextBrush text field visible again.
I think I know what your saying. Your saying to attach a
script to the first frame of the looping movie clip that would
check to see which of the 3 dynamic text fields are visible. That
would be perfect but I'm not sure how to do it.
What would the script that I place on my button look like?
What would the script in the first frame of the looping movie clip
look like?

Implementation of state space model with constant disturbance in mathscript and simulation

I am new to LabVIEW and now I am doing a project realizing heater control in 8 rooms.
I have realized the state space model in the form x(k+1)=x(k)+u(k) using mathscript (using c_to_d) and feed it into control and simulation loop for simulation.
My problem is, in my project, I have to consider the disturbance from the other rooms. So the statespace model changed to be x(k+1)=x(k)+u(k)+E*d, where E is the matrix concerning the disturbance and d is the vector of disturbance. How could I implement the disturbance and discretize the new model in mathscript and which function to choose for the simulation. Discrete state space stochastic model?
Appreciate your kind help.

Hello, state space models in LabVIEW most of the time are being implemented by utilizing mathscript syntax
in addition with some functions of the LabVIEW Control Design and Simulation Module.
There´s a couple of nice tutorials for control design with these tools which I´d like to point you to as a first step.
http://www.ni.com/white-paper/6368/en/
http://www.ni.com/white-paper/6368/en/
http://www.ni.com/white-paper/6435/en/
http://home.hit.no/~hansha/documents/lab/Lab%20Work/MathScript/MathScript%20Lab%20-%20Part%20II.pdf
regards
Marco Brauner AES NIG

Control design and simulation toolkit

Hello everyone,
Does anybody know if indexing is possible in a Control and Simulation loop in Labview? I need to save in an array all the simulation data.
Thanks,
Ussr123.
Solved!
Go to Solution.

Solved: the necessary icon is called: Collector.

Control design and simulation module

Hi,
I am new to Labview and i am trying to work on Control System design. I have downloaded and installed the Evaluation Module of Control Design and Simulation Module. The problem I am facing witht this is its not showing any control fuctions in functions Palette. While installing it said its installing only control design and simulation assistant. Please, can anyone help with this.
I am actually looking at this module to implement Sliding mode control for non linear systems. I would like to know if there are any examples to implement this??
Thank You.

Hello
The problem is the following. The version of LabVIEW that you are using does not match the version of the evaluation version of LabVIEW Control Design and Simulation Module (CD&SIM). If that happens, the installer will not select the support files for your LabVIEW. If you download LabVIEW 2011, then you must install CD&SIM 2011.
Now, the module in the current version does not have an example with sliding mode control. But using this module, you can easily implement the algorithms and simulation its result using the Control and Simulation Loop.
Hope this helps.
Barp - Control and Simulation Group - LabVIEW R&D - National Instruments

Control, design and simulation

Hello everybody,
I am trying to run a simulation in Control Design and Simulation module. My simulation consists of various simulation systems. The subsystems are working as desired when run as separate units, but when I run the complete system, the subsystems fail to produce the output values.
I have not used any local variables or any discrete function vi inside a subsystem.
Where am I wrong ? Any help would be much appreciated.

I mean the indicators connected to various subsystems are inactive and don't produce any output values. I tried to find the error using the Error Cluster, but it didn't show any error. I am using LabVIEW 2011. I have attached the complete system including the subsystems. The individual systems are working fine. I changed the solver too, but the problem persisted. Please try to identify the error.
Barp wrote:
When you say: Fail to produce a output, what do you mean?
On the right side of the Control and Simulation loop you have the 'Error Out' cluster. Create a control from it and see if you have an error. Also, which version of LabVIEW are you using?
If this is not producing an error, then try to change the solver you are using. It would help if you could post your code (or at least pictures) of it.
Attachments:
Wind Turbine Integrated.7z ‏2240 KB

Control Design and Simulation and DAQ

I'm learning Control Design and Simulations. I have some questions about it.
1. For System Identification use, we can find the transfer function/model of the system by feeding data measurement from the system. But, how long data do we need to be sufficent for Identification System to estimate the model? Until the get saturated value (steady state)? or any other intervals? What if the system is unstable? How will Identification System Toolkit estimate that case?
2. For connecting to hardware, we just connect the clock in the simulation loop to the hardware? And the simulation loop will simulate the blocks inside once it got the trigger/data from the DAQ? what about the step time and solver? Do they follow the timing from hardware? or they will run on their own supplied values/clock?if we use USB DAQ, we can't have any clock from it (as far as I know it's because USB connection is not that stable for clocking since it might be any jitters or delays.) So, how do we configure the timing parameter for USB DAQ?
3. There is possibility to convert model in transfer function to state space, how do we know the states inside that conversion?
Any helps would be great...
Thanks in advance...

Dear Chin ho,
After going through your questions I found some documentation which will be useful for you. But I you still have more questions, you can reply me any time.
1- About the data and amount of it I couldn't find any info but maybe you can use the new functions in LV version 2009 and find your answer.
Estimating States of Nonlinear Stochastic State-Space Models with Extended Kalman Filters
In previous versions of the LabVIEW Control Design and Simulation Module, you can use the Discrete Kalman Filter function and the Continuous Kalman Filter function to estimate the states of a linear discrete or linear continuous stochastic state-space model, respectively. In the LabVIEW 2009 Control Design and Simulation Module, you can use the Continuous Extended Kalman Filter function and the Discrete Extended Kalman Filter function to estimate the states of a nonlinear continuous or a nonlinear discrete stochastic state-space model, respectively.
The Continuous Extended Kalman Filter function and the Discrete Extended Kalman Filter function estimate model states of a partially observable plant based on noisy measurements. First, use the SIM Discrete Nonlinear Plant Model template VI or the SIM Continuous Nonlinear Plant Model template VI, located in the labview\templates\Control and Simulation directory, to define the system model. Then use the the Discrete Nonlinear Noisy Plant function or the Continuous Nonlinear Noisy Plant function to simulate the discrete or continuous nonlinear model, respectively, with the addition of noise. Finally, use the Continuous Extended Kalman Filter function or the Discrete Extended Kalman Filter function to estimate the states of your model.
The Continuous Extended Kalman Filter function and the Discrete Extended Kalman Filter function linearize the nonlinear system either by calculating a Jacobian matrix internally or by using an external Jacobian matrix that you define. Use the SIM Continuous Jacobians template VI or the SIM Discrete Jacobians template VI, located in the labview\templates\Control and Simulation directory, to define an external Jacobian matrix.
Refer to the LabVIEW Control Design User Manual, accessible by navigating to the labview\manuals directory and opening CD_User_Manual.pdf, for more information about estimating the states of nonlinear stochastic state-space models with extended Kalman filters.
2- I think that I found a pdf document about this part of your question which will be helpful. If you would like to give your email address, I can send it to you.
3- About this part you can check the help function in LabVIEW when you open the "CD Convert Transfer function To State-space" function in your front panel.
I pasted some info about the mathematic part below.
The LabVIEW Control Design and Simulation Module provides tools to study the dynamics of systems described by linear time-invariant (LTI) continuous and discrete models. You can create deterministic state-space, transfer function, and zero-pole-gain models. You also can create stochastic state-space models and the second-order statistics noise models. You can use these forms to describe both single-input single-output (SISO) and multiple-input multiple-output (MIMO) systems.
Continuous transfer function and zero-pole-gain models use the s variable to define time, whereas discrete transfer function and zero-pole-gain models use the z variable to define time. Continuous state-space models use the t variable to define time, whereas discrete state-space models use the k variable to define time.
Deterministic State-Space Model
Continuous
x(t) = Ax("t) + Bu(t)
y(t) = Cx(t) + Du(t)
Discrete
x(k + 1) = Ax(k) + Bu(k)
y(k) = Cx(k) + Du(k)
Stochastic State-Space Model
Continuous
x(t) = Ax(t) + Bu(t) + Gw(t)
y(t) = Cx(t) + Du(t) + Hw(t) + v(t)
Discrete
x(k + 1) = Ax(k) + Bu(k) + Gw(k)
y(k) = Cx(k) + Du(k) + Hw(k) + v(k)
Second-Order Statistics Noise Model
Q = E{w . wT} – E{w} . ET{w}
R = E{v . vT} – E{v} . ET{v}
N = E{w . vT} – E{w} . ET{v}
where
t is continuous time.
k is the model sampling time multiplied by the discrete time step, where the discrete time step equals 0, 1, 2, …
x is the model state vector.
u is the model input vector.
y is the model output vector.
w is the process noise vector.
v is the measurement noise vector.
A is an n × n state matrix of the given model.
B is an n × m input matrix of the given model.
C is an r × n output matrix of the given model.
D is an r × m direct transmission matrix of the given model.
n is the number of model states.
m is the number of model inputs.
r is the number of model outputs.
G is a matrix relating w to the model states.
H is a matrix relating w to the model outputs.
Q is the auto-covariance matrix of w.
R is the auto-covariance matrix of v.
N is the cross-covariance matrix between w and v.
E{} denotes the expected value or the mean of the enclosed term(s).

Quick question about looping movie clips

I'm a REAL Flash novice, and I'm trying to get a movie clip to loop 3 times, and then continue on.
Here's the code I've written (I'm sure it's painful to see)
stop();
if (!loopCount) {
var loopCount:Number = 0;
loopCount++;
if (loopcount < 3) {
gotoAndPlay (1)
if (loopCount = 3) {
gotoAndPlay(363);
Could someone help me out?
Thanks,
Brandon

use double equal (==) to test for equality:
stop();
if (!loopCount) {
var loopCount:Number = 0;
loopCount++;
if (loopcount < 3) {
gotoAndPlay (1)
if (loopCount == 3) {
gotoAndPlay(363);

How to join multiple clips and music?

Hi. I have finish a project, but I want to include new music with news clips in the middle of it . How can I join the multiples clips and the music I have edited so far in order to move them in the timeline as is they were a single clip, that is, without broken them? Thank you

You can find the same issue in
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or
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Follow the link
http://there-n-back-again.blogspot.com/2009/04/oracle-analytics-how-to-report-over-non.html
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Regards
Nicolae

How exit for a script having set of pl/sql blocks and sql queries

HI,
I have set of blocks and sql queries in a script.
In some cases I want to stop the excution of next statements and blocks.
As in pl/sql block We can use return , in case of loop we can use exit, so what is to be use in case if sql script which contain set of blocks and sql queries.
Thanks and Regards in Advance,

Hi,
how to exit from the script if confirm_to_continue is set to 'N'.
i.e in this case I want the preceding statements not to be excuted.
Please suggest.
script:
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How do I lope through array, delete clip and remove from array

I have a function that creates an instance of a movieClip and
adds it to an array.
In my gameloop I loop through the array and change some
values. Now I want a cleanup function that loops through the array,
and if the y value exceeds a certain value, I want to delete the
clip instance and remove the record in the Array.
Could someone please help me with the syntax for that? I will
lay the code out below.
Thankyou

I still haven't gotten an answer on this one, and my client
is starting to push me to fix the bug.
I have created a number of instances of a movie clip, and I
have also pushed references to each clip into an array.
Then I loop through the array and do things.
At some point I want to loop through the array and delete the
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I don't know the syntax for that.
for (var n:int = 0; n<myClipArray.length; n++){
removeChild (myClipArray[n])
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I'd like to think there is some way to do that.

Looping a clip and simulator queries

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