Re: Gecko 320 VS. 340

Hi,

The G420 is a 3-phase brushless DC servodrive. In all other specs it
is the same as a G320.

I have got a few dozen hours of running time in on the prototype.
Right now it functions just like the G320 except there is a noticable
discontinuity or "tick" on every Hall sensor edge (every 60 degrees).
This is something I would like to attenuate or eliminate altogether.

One promising idea that has ocurred to me is to phase lock a ramp
function off of the hall sensor edges. This ramp then would be used
as an attenuation function for the "off" winding. Rather than
abruptly switching a winding "off" or "on", the current would be
gradually applied or removed, eliminating the discontinuity. The
behavior should then approach what one would expect from a
sinusoidally commutated motor.

I have a breadboard started.

Mariss

--- In CAD_CAM_EDM_DRO@y..., "kdoney_63021" <kdoney_63021@y...> wrote:
> What is the difference between the 320 and 340 model of Gecko's
> drivers.