Editing Quadrature
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[[File:Quadrature Diagram.svg|thumb|Digital quadrature signals]] | [[File:Quadrature Diagram.svg|thumb|Digital quadrature signals]] | ||
− | Quadrature digital signals consists two channels (wires) and it can carry incremental | + | Quadrature digital signals consists two channels (wires) and it can carry incremental reference or feedback signal. Quadrature signal is commonly seen in optical encoders which is probably the most common feedback device type in modern servo motors. Quadrature signal can be also used as [[reference signal]] and it has similar properties with [[pulse and direction]]. |
==Operation== | ==Operation== | ||
Each edge of signal (from A or B channel) will increment or decrement quadrature counter value by one. | Each edge of signal (from A or B channel) will increment or decrement quadrature counter value by one. | ||
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| Mechanical servo accuracy including [[tracking error]] || Theoretically 1/8000. In typical case this would yield 1/500 to 1/2000 mechanical accuracy in dynamic conditions (not standing still). | | Mechanical servo accuracy including [[tracking error]] || Theoretically 1/8000. In typical case this would yield 1/500 to 1/2000 mechanical accuracy in dynamic conditions (not standing still). | ||
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