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Connect both hall and incremental quadrature encoders

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vpl
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Connect both hall and incremental quadrature encoders

Hi, my BLDC servo motor has both internal hall sensors and an incremental encoder (see info below)

image

Can I connect both sensors to Vesc (4.12 HW)? Hall sensor is clear but how do I connect the quadrature encoder (to P3)? It's just A,B,Z no SPI.

Can I use the hall information for initial positioning and then go with the more precise incremental encoder?

I must avoid an index search on startup as that would move a big robot without control.

Cheers

galp
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Last seen: 6 months 3 weeks ago
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Joined: 2018-10-25 19:08
Posts: 49

 

Can I connect both sensors to Vesc (4.12 HW)? Hall sensor is clear but how do I connect the quadrature encoder (to P3)? It's just A,B,Z no SPI.

 A -> H1
B -> H2
Z -> H3

Instead of doing an index search each power - up you can: 

  • leave VESC logic and encoder powered consuming ~3W per VESC / encoder
  • Position index close to axis "home" angle
  • Use hall sensors to find indexes in controlled manner