Incremental Encoders
Incremental encoders are sensors capable of
generating signals
in response to rotary movement. In conjunction with mechanical
conversion devices, such as rack-and-pinions, measuring wheels or
spindles, incremental shaft encoders can also be used to measure
linear movement.
The shaft encoder generates a signal for each
incremental change in position.
With the
optical transformation,
a line-coded disc made of metal,
plastic or glass and positioned on a rotary bearing interrupts the infra
red light ray emitted by gallium arsenid sender diode. The number of
lines determines the resolution, i.e. the measuring points within
a revolution. The interruptions of the light ray are sensed by the
receptor element and electronically processed. The information is then
made available as a rectangular signal at the encoder output.
Examples for typical applications of incremental encoders:
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Franking machines
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Door closing devices for trains
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Desktop robots
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Lens grinding machines
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Plotters
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Testing machines for optical
waveguides
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Scattering machines
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Tampon printing machines
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Ultrasonic welding
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Screwing machines
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Labelling machines
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x/y indication
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Analysis devices
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Drilling machines
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Mixing machines
ENCODERS
COUNTERS CONTROLLERS INDICATORS RELAYS PRINTERS CUTTERS
Shaft Encoders 2001
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Incremental Encoders