RVDT simulation

[TerraNova]

The task is to build the following system:

INPUT: 3000 Hz sinusoidal syncrosignal of phase A.

OUTPUT: Two 3000 Hz sinusoidal signals with phase (А-а) и (А+а) respectively.

What would You suggest as a Hardware and Software solution?

Thanks.

[Ben]

I have used NI LVDT modules with DVDT with great success.

They will condition the signal and output an analog value that maps to the DVDT postition.

Take care,

Ben

[TerraNova]

Thanks, Ben.

And maybe You can scetch some more details for me.

Da would be nice.

Thank You.

[Ben]

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@TerraNova wrote:

Thanks, Ben.

And maybe You can scetch some more details for me.

Da would be nice.

Thank You.

---

One of the reasons I lean twoard NI stuff for LV apps is...

1) Call you rinside sales rep and tell them the platform you want to use and that you need ti interface with a RVDT.

2) Order nd wait for widget.

3) Call NI support and ask for example to use that widget.

Done.

"Gotchas" ?

If you numbers go down insted of up, swap the windings.

I hope that helps,

Ben

[TerraNova]

Thanks, Ben.

[TerraNova]

The question is still on.

How to simulate the system described in a very first post?

All those three signals should be syncronized.

Maybe FPGA and it's DACs?

Thank You in advance.

[srm@viewpointusa.com]

yes RVDT simulation with FPGA and DACs.   RVDT work similar to LVDT in that the secondaries vary amplitude not phase relationship (in my experience).  resolvers change phase angle relative to excitation with rotation.  both can be implemented with FPGA using ADC and DACs.

[TerraNova]

Thank You, Stu.

[TerraNova]

Thank You, Stu.

[srm@viewpointusa.com]

correction, the resolver does not change phase angle but changes amplitude according to the angle of the resolver.  still can simulate both LVDT/RVDT and resolver.

simplest way (but not best SINAD) is to multiply excitation by simulation values to get secondary values for DAC outs.  this will be limited by acquisition rates (200 kHz or 750 kHz sample rates depending on model)