WHAT IS THE DIFFERENCE BETWEEN ABSOLUTE ENCODER AND
INCREMENTAL ENCODER.

Answer Posted / m.manivannan

Think of an incremental encoder as serial, and absolote as
parallel.
Think of incremental, YOU have to figure out where the
encoder is, and absolute IT tells you where it is.
Incremental after a power failure, you no longer now where
it is, absolute after a power failure still knows where it is.

Incrementals give you a pulse train indicating units of
movement and direction. An absolute gives you a binary bit
signal scaled in bits of resolution for one encoder shaft turn.

With an incremental encoder, you will always need a home
position sensor.

Most applications I have seen incremntals on linear motion
to move an axis, and absolute on a master gear of a machine
to indicate where in the in the rotation of 360 degrees the
machine is at.

Is This Answer Correct ?    10 Yes 1 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

i am electronics & comm engg & appling 4 the AAI jr executive (electronics/ATC) written test. pls forward me the syllabus & old question papers.I will be very much thankful to you akil403@yahoo.com

1586


What are the control strategies of chopper?

633


explain the advantages of power factor correction is an RLC circuit for a commercial customer, include tarifs..

4079


Define modulation.

588


What is meant by radix (or base) of a number system?

629






What is the difference between power diode and signal diode?

594


Explain the use of excess-3 code.

638


Explain Power Control.

1616


What is cache coherency and snooping

609


Water boiling point temperature is 100 deg. In which liquid state is convert into the gas state,but in turbine which principle is use by which exhaust temperature is 50-55 deg and is in the stage of steam?

562


What is meant by optimization and what are different ways of optimiztion?

3571


WHY RECIPROCITY THEOREM IS MAINLY USED IN ELECTRONICS

2851


What is a waveform used for in reference to electronics?

687


Explain the different steps of Commissioning.

1704


Explain how to manufacture the cmos inverter?

618