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

Sun, 9 Feb 2003 15:29:05 -0800 (PST)

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Stig, After rethinking again, Marv has said it right. It is wiser to do it with software than to do it with hardware. On that note I think your drawing would be the best to talk about. 
The two regulators on the first cylinder will be needed to regulate the pressure increases when you move the stick in that direction. So some feedback will be needed to see which way the stick is moving and increase that side of the cylinder. Now as the airspeed increases or decreases both regulators will need to do the same independant of the movement of the stick. Increasing the pressure on both sides at the same time and rate. 
Now for the trim. I'm not sure what you are doing with the second cylinder but as we know, it is the equalization of pressure on the stick. If we use the motion of the trim wheel to tell the regulators to increase or decrease the differential on each side of the cylinder but not going below airpeed pressure then the stick will feel no more pressure. If you go the right way then the pressure decreases and if the wrong way the pressure increase. This way we use only one cylinder and two regulators per axis cutting the cost. The programing will be the bear. If you don't get it right the first time software can be changed.
Comments?
Ken
 Stig Joergensen <stig.joergensen@clearsky.dk> wrote:Attached is a diagram of what is was thinking...

Use one cylinder to control the amount of force required to move the
stick and an other cylinder to control of center position, this cylinder
piston is mounted on the first cylinders air compartment, so the "force
cylinder" is moved by the "centre cylinder"...

this should be able to give you total free movement found in a lowspeed
stall and you should also be able to control the force required at
higher speed

/Stig

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<P>Stig, After rethinking again, Marv has said it right. It is wiser to do it with software than to do it with hardware. On that note I think your drawing would be the best to talk about. 
<P>The two regulators on the first cylinder will be needed to regulate the pressure increases when you move the stick in that direction. So some feedback will be needed to see which way the stick is moving and increase that side of the cylinder. Now as the airspeed increases or decreases both regulators will need to do the same independant of the movement of the stick. Increasing the pressure on both sides at the same time and rate. 
<P>Now for the trim. I'm not sure what you are doing with the second cylinder but as we know, it is the equalization of pressure on the stick. If we use the motion of the trim wheel to tell the regulators to increase or decrease the differential on each side of the cylinder but not going below airpeed pressure then the stick will feel no more pressure. If you go the right way then the pressure decreases and if the wrong way the pressure increase. This way we use only one cylinder and two regulators per axis cutting the cost. The programing will be the bear. If you don't get it right the first time software can be changed.
<P>Comments?
<P>Ken
<P>&nbsp;<B><I>Stig Joergensen &lt;stig.joergensen@clearsky.dk&gt;</I></B> wrote:
<BLOCKQUOTE style="BORDER-LEFT: #1010ff 2px solid; MARGIN-LEFT: 5px; PADDING-LEFT: 5px">Attached is a diagram of what is was thinking...<BR><BR>Use one cylinder to control the amount of force required to move the<BR>stick and an other cylinder to control of center position, this cylinder<BR>piston is mounted on the first cylinders air compartment, so the "force<BR>cylinder" is moved by the "centre cylinder"...<BR><BR>this should be able to give you total free movement found in a lowspeed<BR>stall and you should also be able to control the force required at<BR>higher speed<BR><BR>/Stig<BR></BLOCKQUOTE><p><br><hr size=1>Do you Yahoo!?<br>
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