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Author Topic: Voice Coil Powered Legged Locomotion  (Read 958 times)

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Offline CerinTopic starter

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Voice Coil Powered Legged Locomotion
« on: August 12, 2012, 09:34:45 PM »
Has anyone ever tried or heard of using voice-coils to actuate a legged robot?

After reading about some research at MIT (http://robotic.media.mit.edu/projects/hardware/actuators/overview/overview.html) and about the overall benefits of voice coils, I'm considering making a very simple walker using voice coils for actuation.

Unfortunately, all commercial voice coils I've found online are both physically massive and insanely expensive, with the "smaller" ones running in the hundreds of dollars, so I'd have to make my own. It seems tedious, but doable, and I've seen a few examples online of people who have already built their own using off shelf motor controllers to drive them.

Suggestions or comments? Does this seem interesting or am I wasting my time?

Btw, I'm new here. What's with the excessive captcha's all over the site? There was some weird flag recognition captcha to register, which wasn't so bad, but now I'm seeing both a text recognition image captcha as well as a 6 question text captcha on every form I submit on the site. Not even companies that get a lot of spammers, like Google, bother with such overkill. It's just punishing your users.

Offline Soeren

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Re: Voice Coil Powered Legged Locomotion
« Reply #1 on: August 20, 2012, 04:15:43 PM »
Hi,

Unfortunately, all commercial voice coils I've found online are both physically massive and insanely expensive, with the "smaller" ones running in the hundreds of dollars, so I'd have to make my own. It seems tedious, but doable, and I've seen a few examples online of people who have already built their own using off shelf motor controllers to drive them.

Suggestions or comments? Does this seem interesting or am I wasting my time?
If you're learning something and having fun at the same time, I don't see how it could be wasted time :)
You could rip open a dead hard drive, they've got a nice voice coil actuator for the head positioning and even if you can't find a way to use them directly, you'll still beable to study a working design (and rip the magnets for a DIY version).


Btw, I'm new here. What's with the excessive captcha's all over the site? There was some weird flag recognition captcha to register, which wasn't so bad, but now I'm seeing both a text recognition image captcha as well as a 6 question text captcha on every form I submit on the site. Not even companies that get a lot of spammers, like Google, bother with such overkill. It's just punishing your users.
I'm not sure if you'll see this anymore, or if it's the first few times you post, but then it goes away and it keeps the place reasonably spam free (and filters off the not-so-dedicated ;))
Regards,
Søren

A rather fast and fairly heavy robot with quite large wheels needs what? A lot of power?
Please remember...
Engineering is based on numbers - not adjectives

 


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