Encoder Is A Sensor That Has Wide Range Of Industrial Applications
Encoder |
An Encoder is a sensor that detects position. It is usually used in
robotics to measure the rotational and linear motion of a motorized device. They
can be an internal part of the device or externally attached to the device.
There are many types and they vary in
size, type, and cost. They are used in a wide range of industries and
applications.
They come in two main forms: an
incremental and absolute encoders. Incremental one are designed to track
position and provide a steady stream of output signals. They use a combination
of optical and electrical interfaces to determine position.
The Encoder consists of a code disc connected to
the shaft of the device, with clear and also opaque areas that are surrounded
by a light-emitting diode (LED). A receiver mounted on the back of the disc
transforms the obtained pulse signal into an electrical signal. A typical
incremental has 2 output signals, "A" and also "B". Each
signal is offset from the other by 90 degrees. The direction of rotation is
figured out by comparing the two signals.
This is a simple method to determine
the motion of an incremental one, and the input interface of this device should
be compatible with this type of signal. Some have three signals, "A",
"B", and "Z". The output of the third signal is used to
identify the zero reference point of the machine. Unlike incremental, absolute
one are not sensitive to noise or interference and can be counted without being
memorized. These Encoders are also
more durable because they do not require a direct connection between the sensor
and the rotating axis of the device. They are mainly used in a variety of
industrial and consumer electronics products. They are widely found in
industrial robots, automobiles, computers, medical equipment, and even sports
cars.
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