Max Encoder/Interrupt Frequency?

duane · #1 23-01-2006, 01:09

We are going to be using three encoders, two for position control (on the drive wheels) and one for speed control. We expect the motor that we need speed control on to be going a max of about 2500 RPM. We are using the 63K encoders that should handle this speed, but I'm concerned about the interrupt speed on the processor.

Are we going to overwhelm the processor? If the processor is at 10MHz, 2000RPM with a 64 PPR encoder is a little over 2100 interrupts per second. That doesn't seem to bad, but we don't have first handle knowledge like some others.

Add in some positioning encoders, and is this going to work?

Thanks for the advice.
...Duane

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