[simpits-tech] May the Force Feedback be with you...

[Keenan Akin]

Craig,  I can't get your links to work.

Keenan


Craig Rochester wrote:

>Here are a couple of pics:
>http://pages.zdnet.com/johncraigrochester/sitebuildercontent/sitebuilderpict
>ures/servo_regulator.jpg
>http://pages.zdnet.com/johncraigrochester/sitebuildercontent/sitebuilderpict
>ures/new_gsuit_regulator.jpg
>
>This is a rig to get the G-force data from Falcon and pressurize a G-Suit.
>You won't need the white contraption in the second pic, that's just to dump
>air at very low pressures.
>
>Go to this site and click the "download" button for "Model 10 Series" :
>http://www.fairchildproducts.com/ic/products_pdf.asp?table=fip_pprpdf&type=P
>nuematic+Pressure+Regulators
>
>Read the "OPERATING PRINCIPLES" section.
>
>All I do is take the treaded rod out of the top and replace it with a solid
>rod.  Then I mount the servo rig like in the pics.  The eccentrically
>mounted bearing has the servo arm epoxied inside.
>
>Craig R.
>
>
>-----Original Message-----
>From: simpits-tech-admin@simpits.org
>[mailto:simpits-tech-admin@simpits.org]On Behalf Of Akin, Keenan L
>Sent: Tuesday, February 04, 2003 2:54 PM
>To: simpits-tech@simpits.org
>Subject: RE: [simpits-tech] May the Force Feedback be with you...
>
>
>Craig,
>
>Have you modified a regulator to do that?  If so, can you enlighten me?
>
>Keenan
>
>
>-----Original Message-----
>From: Craig Rochester [mailto:johncraigroch@msn.com]
>Sent: Tuesday, February 04, 2003 1:45 PM
>To: simpits-tech@simpits.org
>Subject: RE: [simpits-tech] May the Force Feedback be with you...
>
>
>Ok, I see...  You'll waste a lot of air.  Modifying a regulator to do the
>same thing is pretty easy, and you only use a fraction of the air.
>
>-----Original Message-----
>From: simpits-tech-admin@simpits.org
>[mailto:simpits-tech-admin@simpits.org]On Behalf Of Akin, Keenan L
>Sent: Tuesday, February 04, 2003 2:26 PM
>To: simpits-tech@simpits.org
>Subject: RE: [simpits-tech] May the Force Feedback be with you...
>
>
>Maybe I shouldn't say "3-way".  It is more of a shuttle valve that is
>normally closed.  Positive polarity ports one direction, negative the other.
>
>-----Original Message-----
>From: Craig Rochester [mailto:johncraigroch@msn.com]
>Sent: Tuesday, February 04, 2003 1:16 PM
>To: simpits-tech@simpits.org
>Subject: RE: [simpits-tech] May the Force Feedback be with you...
>
>
>I don't understand how this works.
>
>A 3-way solenoid has 2 states: energized and not.  There are three ports
>"A", "B", and "C"= common.  In first state "A" to "C" is open and "B" is
>closed.  In the second state "B" to "C" is open and "A" is closed.  See
>attached.
>
>Craig R.
>
>
>
>-----Original Message-----
>From: simpits-tech-admin@simpits.org
>[mailto:simpits-tech-admin@simpits.org]On Behalf Of Akin, Keenan L
>Sent: Tuesday, February 04, 2003 1:17 PM
>To: SIMPITS
>Subject: [simpits-tech] May the Force Feedback be with you...
>
>
>Okay folks,
>
>Here is my current concept of a pneumatic force feedback actuator for my
>pit.  There would be two of these actuators attached to the stick (one pitch
>axis, one roll axis).
>
> <<ffactuator.gif>>
>The servo driven valve uses airspeed data to modulate the airflow from one
>side of the cylinder to the other (caused by moving the stick).  For
>example, at higher airspeeds, the flow will be restricted, causing the stick
>to be harder to move.
>
>The solenoid valve ports pressurized air to one side of the cylinder or to
>the other only when a force feedback signal directs it.  Otherwise, it is
>closed.
>
>Thoughts?  Questions?
>
>Keenan
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>.
>