Hi Peter,

As far as I can tell the spikes are in the feedback velocity. It can be a little difficult to tell cause and effect.

Are you using identical hal files for the system with the spikes/without spikes?

When I built the 2.6.13 branch on the 2.7.9 ISO I only had to make some very minor changes to the hal files to get it to run.

Les

On 28/06/2017 19:48, Peter C. Wallace wrote:
Did you trace the source of the PID output spikes?
that is, are there glitches in feedback position of feedback velocity?

The whole thing sounds very strange

Are you using identical hal files for the system with the spikes/without spikes?

Peter Wallace
Mesa Electronics

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