What Exactly Is An "eps" (Electronic Positioning System)?

[Bikersmurf]

Does your servo motor go to needle up if you push down with your heal on the control pedal? I had to adjust lengthen the linkage slightly to allow the control pushed up to allow this. 

[CowBoyOUTLAW]

On 10/9/2019 at 12:04 AM, Matt S said:

Not all NPS sensors are the same. I'm sure that some have an optical rotary encoder but I've taken apart several low-end NPS units and found them to be a hall-effect sensor with a small magnet on the rotor wheel. Essentially all they do is provide a logic signal when the magnet passes (hi or lo depending on the brand). Easily replicated with many different off-the-shelf sensors.

I suspect that Jack servos count the number of motor revolutions between NPS signals, then divides by two to extrapolate for the "other" position. The ESDA servo I have doesn't do this, and have terrible granularity on the throttle.

You are right, most Energy Saving Servo Motors use hall-effect sensor, instead of photoelectric sensor. Except regular needle positioner synchronizer, JOG Dial (Electronical needle positioning) is new method to adjust the needle position, see below video.