I am trying to build a vibration simulator. The end user is a consumer NOT NASA, so I can' use exotic actuators that cost between $500 and $4k a pop.
I am thinking of using simple solenoids.
http://www.mcmaster.com/#electric-actuators/=7r552n
I will start with two (two degrees of freedom, up/down and left/right). My initial thought (please suggest better) is to mount the "platform" on springs thus holding the dead weight (<50lbs) and allowing for motion up/down. The motions to be reproduced are not repeating sine waves, but more like a bumpy car ride with variation.
If the springs can flex horizontally an inch or so then I would be able to combine the two movements, if not then, the whole spring support would be slid side to side. Either way the problem is controlling the solenoids.
DISCLAIMER: I do not pretend to know what I am talking about from here on!
I have seen some interesting "linear solenoids"
http://www.ledex.com/linear-solenoids/selection-soft-shift.html
And am wondering how I could control them.
In reading this forum I came across several threads discussing the National Instruments products
http://zone.ni.com/devzone/cda/tut/p/id/2991
But I am unclear what current they can handle or how the signals could be used to control devices that can handle larger current.
Then there is the STAMP
http://www.parallax.com/tabid/295/Default.aspx
As a seasoned developer, I can write code in C/C++/BASIC for all the control requirements, but how to reproduce the signals at the platform is a little beyond my knowledge at present.
All suggestions welcome
I am thinking of using simple solenoids.
http://www.mcmaster.com/#electric-actuators/=7r552n
I will start with two (two degrees of freedom, up/down and left/right). My initial thought (please suggest better) is to mount the "platform" on springs thus holding the dead weight (<50lbs) and allowing for motion up/down. The motions to be reproduced are not repeating sine waves, but more like a bumpy car ride with variation.
If the springs can flex horizontally an inch or so then I would be able to combine the two movements, if not then, the whole spring support would be slid side to side. Either way the problem is controlling the solenoids.
DISCLAIMER: I do not pretend to know what I am talking about from here on!
I have seen some interesting "linear solenoids"
http://www.ledex.com/linear-solenoids/selection-soft-shift.html
And am wondering how I could control them.
In reading this forum I came across several threads discussing the National Instruments products
http://zone.ni.com/devzone/cda/tut/p/id/2991
But I am unclear what current they can handle or how the signals could be used to control devices that can handle larger current.
Then there is the STAMP
http://www.parallax.com/tabid/295/Default.aspx
As a seasoned developer, I can write code in C/C++/BASIC for all the control requirements, but how to reproduce the signals at the platform is a little beyond my knowledge at present.
All suggestions welcome
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