Sensorless speed/position control

12 years 1 month ago #27628653 by kiransmk
Sensorless speed/position control was created by kiransmk
Hi folks,

I am trying to control my robot using AX3500 through computer serial port. I want to make my robot move exact number of meters in specified time as specified from my motor control program. Can we do this with out using any sensor or encoder. I just want to implement the exact speed and position control from my program through serial port. If we can do so, how is it done?
thank you...

Kiran Kumar

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12 years 1 month ago #27641700 by cosma
Replied by cosma on topic Re:Sensorless speed/position control

If you fit your motors with incremental encoders, you will be able to query the controller for the distance travelled. You can then send the appropriate speed commands to make the robot move and stop at destination

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12 years 1 month ago #27663760 by kiransmk
Replied by kiransmk on topic Re:Sensorless speed/position control
Okay, do you recommend any incremental encoders which costs less. And can I use that with the AX3500 Encoder option. I am able to move my robot motor perfectly, meaning forward/reverse, left/right, speed up/down. I only want to know how much my robot moves, in meters or centimeters. So, that I have exact operation of my robot.
Thank you.

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12 years 1 month ago #27690687 by cosma
Replied by cosma on topic Re:Sensorless speed/position control
You should connect and encoder to the controller. It will operate the same way it does now except that you will be able to read the current encoder count any time.

To measure distance, you will first need to figure out how many encoder counts per meter.

To do this, read the counter, move 1meter (or any other distance), read the counter again. Divide counter change value by the distance. This will give you the count/meter value.

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