How to realize encoder for position measurement?

[gogili]

Please can anyone help me to realize one encoder as LabVIEW virtual instrument?Give me some example?

[LV_Pro]

We really need to know what type of encoder you are planning on using. If it is a rotary encoder, with a digital output, then probably a digital I/O card and using LabVIEW to count pulses is the way. Some encoders will output their position as actual numbers, either through a serial connection, digital one or usb. So give us a little more info to help you.

P.M.

[gogili]

In attachment you can see the problem. Please give me some starting ideas, then we will ask you if something have been unclear.

[Michael.Phillips]

Thank you for contacting National Instruments.

Where did the document you attached come from? Do you have a device that you want to obtain signals from (a photodetector or some type of encoder)?

[gogili]

My professor and I research encoder, and that attachment is from one paper from conference IDAACS'2005 in Sofia, Bulgaria.Can you give me starting solution which I further will develop, because I still start with using LabVIEW, and I don't have many experience. Encoder is pseudorandom with parallel reading of pseudorandom code. Reading is performed with photodetectors.

[Michael.Phillips]

How many/what kind of output(s) does your encoder have? What does this output denote? What type of encoder is it? 

[gogili]

This is one specific case of absolute encoder. Here we have conversion pseudorandom to binary code. Reading is performed with photodetector array.

Can you give me one example of classic absolute encoder realized with LabVIEW, which I will develope latter.

[Michael.Phillips]

Here is an app note on using Absolute encoders with NI products and an example.

Absolute Encoders and NI Products
http://zone.ni.com/devzone/conceptd.nsf/webmain/cc3529aa0ec447768625683f0054478b 

Example:Reading an Absolute Encoder with National Instruments Motion Control
http://sine.ni.com/apps/we/niepd_web_display.display_epd4?p_guid=B45EACE3DB8B56A4E034080020E74861&p_node=DZ52471&p_source=External 

I hope this helps!