2011/11/2 Peter C. Wallace <[email protected]>
> On Wed, 2 Nov 2011, Andrew wrote:
> > I just wonder if 7i39 can work with linear motors without Hall sensors?
> The
> > motor manual says digital or analog Hall sensors are optional.
>
> Should be able to do this with the BLDC component, as actual
> commutation is alway done by the encoder once the initial carriage (I was
> going to say rotor) alignment is done. One option for alignment is a limit
> switch as an index (BLDC runs the motor in stepmotor (uStepped) mode until
> it
> hits limit switch/index which sets the initial alignment).
>
> Another method that the BLDC comp can do is pure magnetic alignment
> (this requires that the motor basically has near 0 load at startup)
> Magnetic
> alignment needs nothing but the encoder.
>
> Thanks! There will be limit switches.
Another important question. The motor's manual says continuous current is
2.3A, peak current 6.9A, resistance 3.4 Ohm, inductance 1.2 mH.
Can I estimate required supply voltage from these data? Peak speed is near
1 m/s.
2011/11/2 andy pugh <[email protected]>
> On 2 November 2011 18:39, Andrew <[email protected]> wrote:
>
> > I just wonder if 7i39 can work with linear motors without Hall sensors?
> The
> > motor manual says digital or analog Hall sensors are optional.
>
> With what sort of encoder?
>
With incremental quadrature encoder.
Andrew
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