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Why are actuators inductive?

Discussion in 'Sensors and Actuators' started by YASH VERMA, Mar 21, 2018.

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  1. YASH VERMA

    YASH VERMA

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    Mar 21, 2018
    Hello all,

    I want to understand better on why are actuators always inductive. It will be great help if you contribute making me understand.

    Thank you in advance.

    Best Regards,
    Yash Verma
     
  2. BobK

    BobK

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  3. AnalogKid

    AnalogKid

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    Because electromagnetic force is much easier to produce and contain than electrostatic force.

    ak
     
  4. BobK

    BobK

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    Forget electrostatic force, I want an actuator based on the attraction of gluons....

    Bob
     
  5. Minder

    Minder

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    Electromagnetism is a branch of physics.
    Google Electromagnetism and your question may be answered.
    M.
     
    hevans1944 likes this.
  6. Alec_t

    Alec_t

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    Not all actuators are inductive. A brake slave cylinder, for example, is an actuator and is operated hydraulically.
    What do you understand by the term 'actuator'?
     
  7. Minder

    Minder

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    I assume the OP would like to zero in on actuators that are inductive.
    In spite of India being the largest English speaking country outside of USA, there may be a language problem,!
    M.;)
     
  8. kellys_eye

    kellys_eye

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    Pneumatic, hydraulic?
     
  9. hevans1944

    hevans1944 Hop - AC8NS

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    We cannot answer questions that presume inaccurate or wrong premises. Actuators are NOT always inductive, as @BobK pointed out in reply #2. Actuators based on the piezo-electric effect are not inductive.
     
  10. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

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    And even if the question was rephrased to ask "why are actuators which use magnetic force always inductive?", the answer would still be that they're not, because there are magnetically actuated switches which use a change in temperature to manipulate the magnetic field (see some soldering iron from the deep dark past). In this case, there is actually a coil of wire too, possibly inductive, but it can be wound to eliminate most of that inductance. The coil is a heating element.

    The answer might be better asked as "why are actuators which use an electrically generated magnetic field always inductive?". THAT is a question which can be answered.
     
  11. Harald Kapp

    Harald Kapp Moderator Moderator

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    Depends on whether, how and when we recognize them.
     
  12. hevans1944

    hevans1944 Hop - AC8NS

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    Huh? What do they speak now in Canada, England and Australia? Eh, mate?
     
    Last edited: Mar 22, 2018
  13. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

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    Well, only India and Australia (and the US) are actually larger than India (Canada being larger than the US). However, India probably has more English speakers than The US, Canada, Australia, and the UK combined :)

    England is only large if you are still a true believer in the British Empire!
     
    davenn likes this.
  14. davenn

    davenn Moderator

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    I think you misunderstand .... largest, population wise ... NOT physical/geographical area of the country

    India ...... Population: 1.339 billion (2017)
    Canada .... Population: 36.29 million (2016)
    USA ..... Population: 323.1 million (2016)
    Australia ..... Population: 24.64 million (2017)
    England .... Population: 65.64 million (2016)

    It would be easy to recognise India as having the largest # of English speakers

    well that was a nice deviation from the topic hahaha
    made the thread interesting since the OP didn't return ;)

    Dave
     
    hevans1944 and Minder like this.
  15. WHONOES

    WHONOES

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    May 20, 2017
    I think they are all variations on English English. But there again I would wouldn't I.
     
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