Chris Radek <[EMAIL PROTECTED]> wrote: > On Mon, Oct 08, 2007 at 07:51:59PM -0600, Sebastian Kuzminsky wrote: > > Duty cycles from 0 to about 55% give me increasing whining from the > > motor but no movement at all. 55 to 100% gives increasing motor speed > > and torque. > > I think my linearity is much better than you describe. Maybe try > pure pwm mode (not pdm)? Or it may just be a matter of your low > power supply. I'm using 24V on mine.
I got a 24VDC, 3.6A power supply hooked up, and it changed the situation but didnt fix the problem. I now get motion at 50% duty cycle. At 53%, the motor exceeds the max RPM my computer can run the encoder-reader thread, and I start "losing steps".... Next to try is to feed the circuit a PWM signal instead of the PDM I'm sending it now, and to run it in slow decay mode instead of fast decay mode like I'm doing now. I'll try these things out at the end of this week. -- Sebastian Kuzminsky ------------------------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/ _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
