Chuck
  • Member for 6 years, 7 months
  • Last seen more than a month ago
  • Virginia
1 answers
4 votes
219 views
what's wrong with this robust control scheme?
0 votes

Where's the rest of your block diagram? It looks like you have a polarity problem - You give a step of +1 and your pos_meas_Hinf goes down instead of up. Nothing you've shown in your diagram looks ...

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2 answers
1 votes
231 views
Python delays on Raspberry Pi
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I posted a comment to the question asking you to provide more information about what your problem is exactly. I can kind of side-step that issue by acknowledging that it seems you have some kind of ...

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1 answers
0 votes
35 views
What are some concepts I can look into to aide in creating a 'compression funnel'(?) without the aide of a motor?
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0 votes

Why not just make a butterfly net? Or do you mean that the collection vessel is solid? If so, hate to burst your bubble but it's not going to work. The name of the effect you're looking for is the ...

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3 answers
1 votes
540 views
PID position control when setpoint does not require continuous force
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"Let's say the mass has come to rest deflected 5 degrees from vertical" How did the mass come to rest with the PID controller enabled? "The P component is very small because the error is very ...

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3 answers
4 votes
195 views
Do non-linear passive pneumatic throttles exist?
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So you want a valve that, once set for a particular flow rate, gives the same flow rate for a variety of differential pressures? If so, I think the only thing you're going to get to do that is a ...

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1 answers
6 votes
227 views
How would you mechanically model an Earth-Moon like orbit?
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I started these as comments but they're way too long for comments. Basically, please clarify what you want. The orbit of the Planet (blue) and its Moon (yellow) has the following differences: Planet ...

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2 answers
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557 views
Deflection of parallel rods with force at an angle
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How accurate are you trying to be? Assuming the roller is ideal, it won't allow a torque, so resolve the impact force to x/y component forces at the center of the roller. Assuming the base of the ...

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3 answers
2 votes
819 views
Mirror-like reflective liquid crystal display panel
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The closest thing I can think of to this would be a digital micromirror device, like the kind that are used in digital light projectors. See the video here, explanation of operation is about 2:10 in ...

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2 answers
2 votes
167 views
Buffing/Polishing bulk Aluminum
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I believe the random orbital sander tool was invented exactly for this - it slides/vibrates while it spins This ensures that no single part of the abrasive material travels the same path twice ...

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