Selecting the correct Vibration motor

Discussion in 'The Projects Forum' started by Shaggy74, Mar 26, 2018.

  1. Shaggy74

    Thread Starter Member

    Oct 20, 2017
    36
    1
    Hi all, I am building this cct to reduce the vibration in a 2.4Ghz radio controlled helicopter. I will be using a vibration motor instead of a basic one. I have a couple of questions I hope you guys could help with. 1. What vibration motor would be the best to use to achieve my aim and 2. The breadboard I am using is quite small, is there a min/max voltage/current to certain sized breadboard? Thank you in advance for any expert input.

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    Last edited by a moderator: Mar 26, 2018
  2. AnalogKid

    AAC Fanatic!

    Aug 1, 2013
    8,078
    2,285
    Are you certain this circuit will do what you want?
    Putting a 741 in this circuit will yield results that are very different from an LM358.
    By breadboard, do you mean perf-board and soldering, or a solderless proto-board?
    Photo or your breadboard?

    ak
     
  3. Alec_t

    Expert

    Sep 17, 2013
    10,243
    2,504
    How will you synchronise the motor's speed with the helicopter vibrations and ensure the vibro-motor's vibrations are in anti-phase with them? If they're not in anti-phase you will just be making the vibration situation worse.
     
  4. Shaggy74

    Thread Starter Member

    Oct 20, 2017
    36
    1
     
  5. Shaggy74

    Thread Starter Member

    Oct 20, 2017
    36
    1
    It is a solderless breadboard
     
  6. Shaggy74

    Thread Starter Member

    Oct 20, 2017
    36
    1
    Having looked at ways of detecting vibration In full sized helicopters by using accelerometers or magnetic pick offs there doesn't seem to be anything designed for radio controlled helicopters (probably due to the fact that there isn' much vibration unless it' crashed ie bent frame/spindle etc) so although not the most scientific way it will just be through gradual trial and error
     
  7. Alec_t

    Expert

    Sep 17, 2013
    10,243
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    One of the difficulties with cancelling/reducing helicopter vibration is that the main vibration axis is not constant; it varies with the direction of movement of the helicopter. Because the helicopter speed either adds to or subtracts from the air speed over a blade, depending on whether the blade is advancing or retreating, the blade lift force varies cyclically.
     
  8. Shaggy74

    Thread Starter Member

    Oct 20, 2017
    36
    1
    For the purpose of the project I will be attempting to reduce the vibration whilst the helicopter is lashed to the deck so there won’t be a changing vibration through various inputs to aircraft movement
     
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