Position of the encoder VI

Similar Questions

• Use the angular position of the encoder to trigger Digital out

  Hello

  I am a novice user of labview, I have access to three modules, two NI9201 and a NI9401.

  I have an angular encoder is used to measure the angular position of a crankshaft of engine, what I try to do is to use the encoder to trigger a digital camera (spark in the motor event) at a certain angular position.  For example, I would like to start up (or) stalled, then I want to change that to + 5 degrees on the encoder, etc.

  So far, I am able to read in the angular encoder when the engine is running, I am also able to output digital signals even if I can't find a way to connect the two.

  If anyone has an idea how to do this, it would be greatly appreciated, I am attaching my VI.

  Thanks in advance,

  Nick

  Hi Nick,

  I hope that the vi attached you will get on the right track.  It's just a general concept.

  The while loop will work until you press the stop button.

  I guess you'll need a spark by revoultion.

  This VI is really just an If/Then

  If the encoder value is equal to (in this example) zero,.

  Trigger digital output.

  I know that I have a wire cut, but I didn't know how to get the angular position of you DAQmx.

  Let me know if this help. (Also let me know if I'm off-target)

  Good luck

  Bill

• reset the encoder position different stepper

  I have a step by step (with encoder) engine connected to a NI 7350 motion controller. The encoder and the stepper have different number per revolution.

  I am trying to reset the engine to a zero position, count value is different for the stepper and encoder, with the Position.vi 'reset' under the control of the path, but it seems that I can only put them on the same value. How is it?

  -ray

  You have the option to add a secondary feedback.

  However, you can read next article.  As long as you set the parameters in MAX, he should be able to do the calculations in the background with respect to the commands that you send to the engine.  And then by setting the value of the primary feedback is not really a problem.

  For example let's say that we use the example in the article (1000 steps/rev and counts/rev encoder 2000) you start at position 0, provide an order of 100, it will make the 2:1 calculation and stop the drive motor once it has 200 impulses of the encoder.  Let's say you want to make of this new 'home' position, set you to 0 and from there.  If you set it to 0, say 150, which corresponds to 150 steps the engine or 300 counts of the encoder.

  In summary if you set the account/rev and steps/rev, Max the associated values order you will be in terms of engines.  LabVIEW will make the calculation of the rate required to stop on the County of appropriate encoder.

• speed of the vehicle by the encoder reading

  Goodmorning Labiview users,

  I need to get an encoder in an electric vehicle speed information. Is a quadrature encoder (64 pulse) with two signals: A and B (and obviously gnd). My equipment is:

  -Compact Rio ni9024

  -module NI 9401 (FPGA)

  I couldn't find an example for my situation,

  I'll be you grateful if you help me. Thanks, has soon.

  In 2012, LabVIEW, it is an example for a decoder in Quadrature with the Position and the speed on a CRIO. I have attached a screenshot incase you don't have access to it.

  The example uses an index entry, however if you use it you can connect this output to a value constant false and the code will work fine.

  Each clock cycle, the FPGA read quadrature inputs. If there is a change, it will calculate the direction (based on the latest values on entries) and either increment or decrement the position. He will also check the number of cycles of the FPGA to calculate how many ticks are passing between the counties of the encoder. You can then read these indicators in your RTW program.

  You will need to configure your project accordingly so that the entries of encoders are mapped on the pins of your device. This VI should give you a great jumpstart on the problem.

• DC motor position control con encoder mediante Arduino

  Estoy tratando realize con position control a DC motor with encoder, ago prove the encoder mediante the los comandos LIFA of Labview utilsacion del lecctura y the tarjeta Arduino, pero al graficarlos este to salta pulsos del encoder, como muchos that without the da tiempo a leer todas las transiciones between las Pestana del al estar girando el motor encoder , por los than busco leer las transiciones directly in the tarjeta con los pines of interrupcion than detectan any State (0-1, 1-0) cambio y una interrupcion alternative. Lo are none to como making el código escrito directly in the tarjeta can mandar el conteo los pulsos (modificando el archivo LIFA_Base) a labView para ser procesados.

  Gracias

  Hola perluigui.

  Como mencionas, need Québec el archivo fuente (.pde) as the al Arduino programs. Te recomendaria mejor crearas UN programa Arduino diferente lea values led encoder is control the value of the position a LabVIEW, y realice el Control en el Arduino directly. Ordered find mejor usually como soporte este programa en page of Arduino, pero por el momento you puedo compartir some ligas con information basica sober interrupciones en Arduino el:

  http://Arduino.cc/en/reference/interrupts

  If tienes alguna duda podemos revisar.

  Saludos.

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  I'm working on a project for my college class with a large amount of data acquisition. Unfortunately, the part of the assignment asks to do entirely in the console rather than through a User Interface.

  I've programmed in C++ and have used the command gotoxy(). However, this is not part of the ANSI C standard. I can't find any additional information about the position of the cursor in C or CVI standards. Is it possible to position the cursor in CVI? If I have to, I'll resort to create a matrix of character as a screen buffer and encode them manually.

  Thanks again!

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