 Electrostatic actuator
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DrZoidberg
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Sat Apr 14 2007, 12:37PM
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Registered Member #350
Joined: Mon Mar 27 2006, 05:14PM
Location:
Posts: 106
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Hi,
I know a piezo ceramic is an electrostatic actuator but I want something that moves several mm instead of just a few µm.
The force doesn't need to be that big. So I was thinking I could simply use two metal plates with an elastic material e.g. rubber in between. Or better yet several layers of metal sheets and rubber.
That would basically be a capacitor that contracts when a voltage is applied.
But it's difficult to get a useful amount of force out of that. I'd need to replace the rubber with something that has a higher dielectric constant, a higher breakdown voltage and is more elastic. Or at least one of the three.
Can anyone give me a hint here? thanks.
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Electroholic
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Registered Member #191
Joined: Fri Feb 17 2006, 02:01AM
Location: Esbjerg Denmark
Posts: 720
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just google "amplified piezo actuator"
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