Re: [CAD_CAM_EDM_DRO] Synchronizing Two Servo Motors

Search this topic on the EMC forum. It has been discussed ad naseum on that
site as well as most cnc sites.

Syncing is one thing, homing the two is another.
Although I've never done it, I would prefer a motor on each rail, but with
them sharing a belt, and a single encoder.

Regards
Roland


2009/3/10 Mattison <yahoo@...>

> I'm building a gantry router with dual lead screws to drive the gantry,
> and
> I need a way to make sure they never get far enough out of sync to rack the
> gantry out of shape. I thought about mechanical linkages but I want to use
> two motors for the extra speed and power, and I already have the motors.
> Does anyone know of a circuit that can take two encoders as input, plus the
> step and direction inputs, and output a fault signal if the two encoders
> get
> out of step? There are several ways I could build such a gizmo, but figured
> I'd check first to see if I can avoid reinventing the wheel.
> --
> Phil Mattison
>
>
>

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