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Can someone show me a formula in order to convert an angle from [V] to degree or rad? (i use aPotentiometer measuring steering angle)

Edit: Well let me exlpain it. I photo of my experiment is shown below. I apply a force to my material and measure the torsion angle with a potentiometer. For example for P=1,18 bar , θ=1,67 V. I want to convert V into degrees or rad. My only clue is that at the full extent of the piston the angle indication in V is 5,33 V –

enter image description here

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  • $\begingroup$ I can understand why to close this question.Instead of vote against me let me know where i am wrong $\endgroup$ – Ioannis Jun 8 '14 at 19:55
  • $\begingroup$ In SI units, $V$ denotes Volts, which is a measure of potential, and cannot be converted to a unit of measure for an angle, e.g. degrees. Can you elaborate on what measurement you've made? $\endgroup$ – JamalS Jun 8 '14 at 20:03
  • $\begingroup$ Please give more details about the experiment. What do you mean by "steering angle"? As written I don't consider this question answerable. $\endgroup$ – Floris Jun 8 '14 at 21:43
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    $\begingroup$ Well let me exlpain it. This is my experiment prntscr.com/3qxzmb . I apply a force to my material and measure the torsion angle with a potentiometer. For example for P=1,18 bar , θ=1,67 V. I want to convert V into degrees or rad. My only clue is that at the full extent of the piston the angle indication in V is 5,33 V $\endgroup$ – Ioannis Jun 8 '14 at 22:10
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    $\begingroup$ Information like the previous comment must be included for the question to be sensible; how did you expected people to know how you had set things up if you didn't tell them? Further, that data should be edited into the questions rather than left in a comment. $\endgroup$ – dmckee Jun 8 '14 at 23:55
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OK, so, you need to know another piece of information, which is the total angle of motion possible from the potentiometer. Typically, for a non-multiturn pot, it might be something like 270°.

Then the ratio of the measured voltage to the total voltage possible is the fraction of the 270° total travel. So if you measured 75% of the maximum voltage, then the pot is at 75% of 270°, or 202.5°

TTFN

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