On Sat, 17 Aug 2019, Les Newell wrote:
Date: Sat, 17 Aug 2019 16:30:12 +0100
From: Les Newell <[email protected]>
To: Peter C. Wallace <[email protected]>
Subject: Re: [Emc-users] Homing following error (was PID feed forward)
Hi Peter,
Yes, it tripped a following error fault. I have attached a plot showing the
following error. As you can see there is a huge spike just as the index
signal drops.
Les
Ack! I thought this might be a simple PID related problem but it looks like a
error introduced to motion (by joints-axis?) The joint command follows
the joint feedback at the step on index but the ferror calculation seems like
its not in the correct place (CMD or FB off by one sample time)
I dont see anything wrong in the plot, did this particular plot generate a
following error? If so could you also plot the following error?
Peter Wallace
Mesa Electronics
Peter Wallace
Mesa Electronics
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