I am also proposing to use simple 40:1 ratio worm gear box with Input servo motor. I am having a dial of 1600mm diameter on output of the gear box which will rotate only in clockwise direction at max speed of 0.5 to 1 RPM. Want to rotate the dial at 10 degree interval. Planning to put incremental encoder on dial for feedback. Can I achieve position accuracy? Can't able to use zero backlash gearbox due to high cost.
closed as unclear what you're asking by Neil_UK, Leon Heller, Lior Bilia, Voltage Spike, Bimpelrekkie Nov 16 '17 at 6:38
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Put a second encoder or any motion sensing device on the output of the wormdrive. This way the motion control can learn the slop in the gearbox and adjust accordingly.