Dynomotion Forum

Looks like "reset,OK" got entered into the INIT filename. How is the button configured?

I couldn't attach the step response save data because it exceeds the 1 MB limit. Did you zip it? Here's the error and velocity plots. The max error is about 100 counts or 0.005 inches. Is that acceptable? I found a link in a forum post to 4.35f and downloaded and installed that but after running a ...

Hi Greg, Thanks for starting a Thread. I don't understand in the linear graph, last attachmet, the graph doesn't seem to "zoom to fit". I'm not quite sure what graph you are referring to or what you mean. But the Plots capture a maximum of 40,000 data points. At 90us sampling that comes out to about...

Hi Dave, You forgot to plot error or post the raw data as we requested. With this we can't see the errors or performance. You didn't plot Velocity or use TripsWPF to check what you are testing. The Velocity is only 171000 not 700000. The Acceleration is only 600000 not 2000000. What is your KMotionC...

Hi Dave, I think your system is borderline unstable. At certain speeds and positions the friction and structural resonances are such to go unstable. Did you tune the system? Did you test at different speeds and positions? Do you gave good margins in your gains? When Jogging the Jog Velocity is set b...

Hi Wilson, That all sounds reasonable. But still quite aggressive on Velocity, Acceleration, and Jerk. 1e7 is over 1/2G acceleration. Most CNCs operate at about 10% of that. If you can't achieve your accuracy goals you may want to decrease those. 5. Reduced the P gain till the servo would freeze and...

Could you just move in the negative direction by an amount larger than the backlash to your position so the backlash would be zero before you zero? Then the backlash would always be zero and not need to be set. Otherwise there is a global variable: double ActualStepPos[NSTEPDIR]; I believe with outp...

Hi Tony,

Are you running Version 4.35f ?

Hi Sam, That makes sense. Basically the motor position will be the Destination + Backlash. The ZeroAxis command zeros the Destination and the Backlash. Setting the Backlash to some value will cause a burst of step pulses to move the Backlash amount. Maybe you could explain what you are trying to acc...

Hi Sam,

No there isn't. The Interpreter will be running from the time you call it to Execute until you receive the callback that it has completed (normally or for any reason).