Using a Phidget Motor Controller and attempting to get a feedback loop

Hello! Recently, I aquired a Phidgets 1065 motor controller and a compatible motor with built-in encoder. Currently, I am trying to write a program that allows me to input a position, and the motor moves at a user-specified speed until the encoder reaches that position. However, the original instructions to the Phidget VI's are so vague, I'm not entirely sure how to tackle this problem. Any help would be appreciated!
Thanks!

It looks like Phidget has a lot of documentation on its website. This webpage might be helpful to get started: http://www.phidgets.com/docs/1065_User_Guide . This user guide shows how to connect the wires. Notice that both the motor control cables and the encoder cables are connected to the motor controller. I believe that the position control loops are performed on this controller/drive itself.
Phidget also has LabVIEW VIs that you can use to set the motor position. This new position is sent to the motor controler through the USB connection and the motor controller will control the motion to that new target position. See this document to get started with the LabVIEW API http://www.phidgets.com/docs/Language_-_LabVIEW#Quick_Downloads . See this document for more information about each of the Phidget VIs: http://www.phidgets.com/documentation/web/LabVIEWDoc/index.html I believe that you would need to look at the section that talks about the servo control module.
Take care,
Jeremy P.
Applications Engineer
National Instruments

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Linear actuator, motor controller and labview. Establishing connection.

Overiew:
I have a 12VDC linear actuator (potentiometer built in) connected to power and Jrk 21v3 USB Motor Controller with Feedback (http://www.pololu.com/catalog/product/1392). The USB motor controller connects to the computer through USB, actuator's feedback wires connect to the motor controller.
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Establishing connection between the motor controller and labview.
What I have done so far:
I installed drivers to the motor controller and windows detects it. NI MAX detects my motor controller (pic attached), but for some reason, when i try to access it through daq assistant in labview it doesnt see it. I also tried accessing it through VISA with no results..
Help will be appreciated.
Thanks
Peter
Solved!
Go to Solution.
Attachments:
problem.jpg ‏124 KB

You have a few things you need to look into:
When you installed the software, did it install a USB > Virtual Com Port dll such as FTDIchip or similar? If so, when you hook up your device, it'll reveal itself as a normal (new) Com Port in Device Manager. You then need to try to talk to that com port.
If you are trying to use the native USB on the board (as MAX has detected for you), then you'll need to use the .NET framework code provided by the manufacturer (probably written in C#), and make your own Constructors in LabVIEW. If you've never done this, it isn't trivial.
I would call the manufacturer and just tell them what you are trying to do. They've probably dealt with LabVIEW before, and may have an example to get you started.
edit: For fun, I followed the link you provided (which doesn't really work). I searched their site for "LabVIEW", and indeed got several hits. This one thing I downloaded (can't resist looking at code) was a gigantic turd ball. However, it did appear to use a normal Com port.
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My question is: How is the synchronization produced at the time of the compensation ? How is it possible to eliminate the errors in a synchronized fashion with respect to the surface of the shaft bearing in mind that I am acquired data at a low rotation speed in order to get the "even angle reference" and then I use it to remove the errors in the vibration signal acquired at normal operation. In this application both operations are made in different acquisitions, therefore the reference of the correction signal is lost. Is it simply compensated without synchronizing ?
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Go to Solution.

Hi CracKatoA.
Take a look at the link bellow:
http://forums.ni.com/ni/board/message?board.id=170&message.id=255126&requireLogin=False
Regards,
Filipe Silva

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Hi jtarula,
I want to preface this response by saying that I am mre familiar with NI controller and driver rather than the one that you have. I am assuming that you are using the dll provided by the manufacturer here:
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Using a Phidget Motor Controller and attempting to get a feedback loop

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