CAD CAM EDM DRO - Yahoo Group Archive

Re: Low cost Servo Controller

Posted by Jon Elson
on 1999-09-14 23:21:04 UTC
Steve Carlisle wrote:

> From: "Steve Carlisle" <quatsein@...>
>
> Jon, the PWM amps from Advanced Motion Controls accept
> a digital signal. How would the STG card control that servo
> drive.

The STG card expects the servo amp to accept analog input.
These AMC amps apparently expect the PWM waveform to
be generated by the CNC control. They are totally incompatible
with EMC anyway, as the PWM waveform controls motor current,
but the EMC is sending a velocity command to the servo amp.
So, the servo amp must take velocity in, compare to the tach
signal, and compute internally what motor current is desired.
(This is an easy computation, at least at the first order, well
within the capability of an op-amp.)

> The Analog amps they sell condition the -/+ 10V signal
> into a PWM signal to drive the bridge. Do the amps you designed
> operate on this principal.

Yes, this is similar to my amps, assuming they use tach to sense
velocity.

Jon

Discussion Thread

David Howland 1999-09-10 12:24:44 UTC Low cost Servo Controller PTENGIN@a... 1999-09-10 15:48:31 UTC Re: Low cost Servo Controller David Howland 1999-09-10 17:07:57 UTC RE: Low cost Servo Controller Andy Olney 1999-09-10 19:34:45 UTC Re: Low cost Servo Controller Steve Carlisle 1999-09-10 21:19:13 UTC Re: Low cost Servo Controller Jon Elson 1999-09-12 22:42:24 UTC Re: Low cost Servo Controller David Howland 1999-09-13 13:34:08 UTC RE: Low cost Servo Controller Jon Elson 1999-09-13 14:49:40 UTC Re: Low cost Servo Controller Bertho Boman 1999-09-13 15:26:10 UTC Re: Low cost Servo Controller Mo 1999-09-13 14:31:40 UTC Re: Low cost Servo Controller Bertho Boman 1999-09-13 16:08:55 UTC Re: Low cost Servo Controller Steve Carlisle 1999-09-13 18:09:21 UTC Re: Low cost Servo Controller PTENGIN@a... 1999-09-13 16:36:02 UTC Re: Low cost Servo Controller David Howland 1999-09-13 17:41:39 UTC RE: Low cost Servo Controller CG 1999-09-13 18:06:05 UTC RE: Low cost Servo Controller Dan Falck 1999-09-13 19:00:45 UTC RE: Low cost Servo Controller PTENGIN@a... 1999-09-13 21:44:43 UTC Re: Low cost Servo Controller Jon Elson 1999-09-13 22:52:12 UTC Re: Low cost Servo Controller Jon Elson 1999-09-13 23:52:43 UTC Re: Low cost Servo Controller David Howland 1999-09-14 09:03:57 UTC RE: Low cost Servo Controller Kirk W. Fraser 1999-09-14 10:00:49 UTC Re: Low cost Servo Controller Bertho Boman 1999-09-14 10:06:39 UTC Re: Low cost Servo Controller George Potter 1999-09-14 10:41:57 UTC Re: Low cost Servo Controller David Howland 1999-09-14 11:04:16 UTC RE: Low cost Servo Controller David Howland 1999-09-14 11:44:55 UTC RE: Re: Low cost Servo Controller Bertho Boman 1999-09-14 12:21:12 UTC Low cost Servo Controller Matt Shaver 1999-09-14 12:42:53 UTC Re: Low cost Servo Controller Jon Elson 1999-09-14 12:58:25 UTC Re: Low cost Servo Controller David Howland 1999-09-14 13:01:16 UTC RE: Low cost Servo Controller Bertho Boman 1999-09-14 12:53:19 UTC Low cost Servo Controller Bertho Boman 1999-09-14 13:05:48 UTC Re: Low cost Servo Controller Bertho Boman 1999-09-14 13:20:37 UTC Re: Low cost Servo Controller David Howland 1999-09-14 15:26:19 UTC RE: Low cost Servo Controller Steve Carlisle 1999-09-14 16:43:25 UTC Re: Low cost Servo Controller David Howland 1999-09-14 15:31:48 UTC RE: Low cost Servo Controller Ian Wright 1999-09-14 15:42:11 UTC Re: Low cost Servo Controller Jon Elson 1999-09-14 16:11:54 UTC Re: Low cost Servo Controller Jon Elson 1999-09-14 16:20:15 UTC Re: Low cost Servo Controller Steve Carlisle 1999-09-14 17:40:37 UTC Re: Low cost Servo Controller PTENGIN@x... 1999-09-14 16:32:29 UTC Re: Low cost Servo Controller PTENGIN@x... 1999-09-14 16:34:15 UTC Re: Low cost Servo Controller PTENGIN@x... 1999-09-14 16:36:36 UTC Re: Low cost Servo Controller Steve Carlisle 1999-09-14 18:03:13 UTC Re: Low cost Servo Controller garfield@x... 1999-09-14 18:39:50 UTC Re: Low cost Servo Controller Dan Falck 1999-09-14 18:10:27 UTC RE: Low cost Servo Controller Bertho Boman 1999-09-14 19:09:34 UTC Re: Low cost Servo Controller Jon Elson 1999-09-14 23:07:45 UTC Re: Low cost Servo Controller Jon Elson 1999-09-14 23:16:59 UTC Re: Low cost Servo Controller Jon Elson 1999-09-14 23:21:04 UTC Re: Low cost Servo Controller Jon Elson 1999-09-14 23:42:00 UTC Re: Low cost Servo Controller Bertho Boman 1999-09-14 23:36:26 UTC Re: Low cost Servo Controller Bertho Boman 1999-09-15 03:54:15 UTC Re: Low cost Servo Controller Bertho Boman 1999-09-15 04:00:36 UTC Re: Low cost Servo Controller Ray Henry 1999-09-15 06:19:49 UTC Re: Low cost Servo Controller Steve Carlisle 1999-09-15 07:49:52 UTC Re: Low cost Servo Controller Steve Carlisle 1999-09-15 07:52:54 UTC Re: Low cost Servo Controller Bertho Boman 1999-09-15 08:16:04 UTC Re: Re: Low cost Servo Controller David Howland 1999-09-15 10:11:41 UTC RE: Low cost Servo Controller Jon Elson 1999-09-15 13:35:35 UTC Re: Re: Low cost Servo Controller F. de Beer 1999-09-15 14:52:43 UTC Re: Low cost Servo Controller Jon Elson 1999-09-15 15:23:54 UTC Re: Low cost Servo Controller CG 1999-09-16 10:02:58 UTC RE: Low cost Servo Controller Jon Elson 1999-09-16 15:39:09 UTC Re: Low cost Servo Controller Tom Kulaga 1999-09-16 17:06:29 UTC Re: Low cost Servo Controller Bertho Boman 1999-09-16 19:40:10 UTC Re: Low cost Servo Controller Jon Elson 1999-09-16 22:40:26 UTC Re: Re: Low cost Servo Controller Dean Franks 1999-09-17 00:32:44 UTC Re: Re: Low cost Servo Controller Bertho Boman 1999-09-17 04:43:03 UTC Re: Low cost Servo Controller Darrell Gehlsen 1999-09-17 22:44:49 UTC Re: Low cost Servo Controller CG 1999-09-18 08:28:21 UTC RE: Low cost Servo Controller Mike Gann 1999-09-18 09:47:15 UTC Re: Low cost Servo Controller Dean Franks 1999-09-18 12:40:43 UTC Re: Low cost Servo Controller CG 1999-09-18 14:23:16 UTC RE: Low cost Servo Controller Jon Elson 1999-09-18 21:03:37 UTC Re: Low cost Servo Controller Steve Carlisle 1999-09-18 22:38:48 UTC Re: Low cost Servo Controller Jon Elson 1999-09-18 21:40:59 UTC Re: Low cost Servo Controller Matt Shaver 1999-09-18 22:05:11 UTC Re: Low cost Servo Controller Dean Franks 1999-09-18 23:09:04 UTC Re: Low cost Servo Controller John Craddock 1999-09-19 04:28:15 UTC Re: Low cost Servo Controller Bertho Boman 1999-09-19 04:27:59 UTC Re: Low cost Servo Controller Pete Dunster 1999-09-19 05:48:20 UTC Re: Low cost Servo Controller Les Watts 1999-09-19 07:32:37 UTC Re: Low cost Servo Controller Steve Carlisle 1999-09-19 09:28:21 UTC Re: Low cost Servo Controller Steve Carlisle 1999-09-19 09:38:53 UTC Re: Low cost Servo Controller Dean Franks 1999-09-19 11:21:32 UTC Re: Low cost Servo Controller Bertho Boman 1999-09-19 13:28:28 UTC Re: Low cost Servo Controller Jon Elson 1999-09-19 21:49:09 UTC Re: Low cost Servo Controller Jon Elson 1999-09-19 22:05:46 UTC Re: Low cost Servo Controller Jon Elson 1999-09-19 22:25:23 UTC Re: Low cost Servo Controller Bertho Boman 1999-09-20 04:22:28 UTC Re: Low cost Servo Controller Leslie Watts 1999-09-20 12:47:55 UTC Re: Low cost Servo Controller Leslie Watts 1999-09-20 12:59:48 UTC Re: Low cost Servo Controller PTENGIN@x... 1999-09-20 13:55:27 UTC Re: Low cost Servo Controller Bertho Boman 1999-09-20 14:11:43 UTC Re: Low cost Servo Controller Jon Elson 1999-09-20 16:05:20 UTC Re: Low cost Servo Controller Peter Bailey 1999-09-20 16:56:10 UTC Re: Low cost Servo Controller Leslie Watts 1999-09-21 08:17:58 UTC Re: Low cost Servo Controller PTENGIN@a... 1999-09-21 10:04:48 UTC Re: Low cost Servo Controller Jon Elson 1999-09-21 13:03:23 UTC Re: Low cost Servo Controller Leslie Watts 1999-09-21 13:46:58 UTC Re: Low cost Servo Controller Les Watts 1999-09-22 07:25:34 UTC Re: Low cost Servo Controller Jon Elson 1999-09-22 12:18:19 UTC Re: Low cost Servo Controller Stephen Barmash 1999-09-23 17:13:28 UTC Re: Low cost Servo Controller