Haptic interfaces

I'd hate to be the test pilot on some of these systems...

OK, go into a dive; wait, wait, wait...; now pull up abrubtly to make sure the airframe destruction prevention subsystem will override the airframe bending prevention subsystem, and let you live to do something equally entertaining tomorrow...

Andy

Yes, but:

1) I assume a shaking stick isn't *painful* (perhaps annoying?) 2) I imagine a pilot encounters that sort of thing *often* in their career.

Contrast this with a collision avoidance system (mistakenly) giving you a mild shock to discourage you from "banking hard to port" when, in fact, that is *exactly* what you need to do in this particular (once in a career) situation.

E.g., I would imagine the shaking stick is familiar enough to the pilot that he would *ignore* it if he saw an aircraft in his flight path. But, would he ignore a "mild shock" as he tried to turn away? Or, would it cause him to hesitate?

I.e., would you have to introduce this "pain" (discomfort) in enough situations that the pilot could set a low threshold to overcome it? (including the "surprise" associated with it)

Dunno. I've just heard horror stories of avionics misbehaving (I wonder if Toyota makes any? :> ) and wonder how quickly a pilot could overcome his hesitation caused by that "unexpected" pain/discomfort?

Are you talking about rather concrete attributes? What kind of attributes are you thinking about?

You used parenthesis. Anyway, I got confused because interfaces that do not belong to a device, are probably off-topic and also not the scope of your research. Then I got more confused because a device (like a door) can have different interfaces (knob/handle/sensor/etc.).

I strongly disagree with that choice: unlike the handle variety, the knob cannot be operated when carrying stuff with your two hands, as it requires at least two fingers to turn. (Also, when nobody is watching, I like to open a door with my foot, which doesn't require special dexterity when the door interface is of the handle variety.)

Which makes this interface very good at what it's supposed to do: to protect our children.

Is this a warning for the unprotected dangerous fluids that children might find in your house? ;)

Define "sort of". Anyway, in general it is pointless to ask questions like "is X better than anything in any circumstance", because either we would all be using X or we would only use X where appropriate.

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Reminds me of when we changed the DELETE button to say GOD on the new born christians workstation.

Cheers

ay.

k

And yet, pilots still fly perfectly good airplanes into the ground for no other reason than they pulled up too hard on that stick as it shook their hands off!

Rick

I guess that makes 7 of 9 the 'best' haptic interface.

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This might not be the best approach. The 'best' haptic interface would have some resemblance to the physical system's behavior. Stick shakers on airplanes are intended to resemble the control surfaces shaking when it approaches stall (which one can feel in small aircraft).

I was working on a remote manipulator system for high voltage transmission line maintenance. Perhaps a small shock to the operator when they grabbed the wrong wire might have been appropriate. But they would probably jump and drop a live 500 kV line on the ground. So not a good idea.

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I'd _love_ to interface with her face.

Tim

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In a nutshell, it is good to the extent that it maps to conventional=20 experience and sensation in a clear way. It is bad to the extent that=20 it is counterintuitive. Exceptional would have to mimic natural = sensation=20 in a major way while having a nearly trivial learning curve. Several examples of good seem to be embodied in the Nintendo Wii. But all this is just my opinion.

If you search hard you may be able to find research that manages to = quantify=20 this to some extent.

=20

=20

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Most of the early Airbus avionics problems have been sorted out. The=20 Boeing issues did not appear in my news sources that i noticed, perhaps it happened when i had gaps in access to those sources.

On the other hand i have read several times of flight control=20 systems behaving exactly as designed leading to crashes. =20 Study early airbus 300 and 310 crashes for examples.

I think that is the first time i saw decent discussion of flaws=20 in the iPod interface. Thanks. It busted me out of several bad=20 ruts all at once. The haptics on my tiny Muvo player are (now=20 obviously) far superior to the iPod interface, i can control it=20 without having to look at it.

Well, for starters, the PicKit2 programming pod is NOT what i would consider a "haptic" interface - despite what our high quality totally bugfree (despite "security" fixes and fixes on fixes ad nauseum) OS states (first install called it that...).

for starters, i do NOT consider the PicKit-2 programming pod as "haptic"..but that is what i saw during installation.

...you mean the brain? Far out!....

** Well, not TOO painful, because what if the plane is going to crash and there is no way to prevent it from "interfering" with a mountain. The pain sez "danger will robinson" and your best strategy is to run into as many treetops as possible to shed velocity and increase possibility of being captured by the trees (do they take prisoners?). All that scuffing along the skin of the aircraft being translated to scuffing on YOUR skin can be a bit distracting to the implementation of that procedure.

Yes! VERY curvy...

Real Time Resolution of sensors Tau

"Characteristics" that can be quantified -- even if subjectively.

Understood. I was trying to force thinking in terms of "haptic" instead of the natural tendency (here?) to think more in terms of "devices" (electronic in this forum).

Due to a childhood injury, I can't achieve full pronation (or supination) with my left hand. As a result, any "handled" door "knobs" can only be operated with my right hand. When faced with such a door, I use my *hip* to actuate the handle and walk through the door backwards/sideways (turning as I go through it).

This only works for doors opening "out" :> That's pretty much the case for "foot power", too.

By contrast, a "knob" doesn't care about the angular orientation of the hand -- so long as you (I) can grasp the knob.

Yes. But it does so at the expense of being unfriendly to those by whom it is *intended* to be used. (I haven't thought about how you could provide this functionality in a "win-win" manner)

Oh, "dangerous fluids" would be the *least* of their worries! ;-)

I.e., the "touch wheel". Can you imagine an application where a "flat, featureless, immovable surface that detects the sequential activation of sensors in a circular motion" would be preferable to some *other* sort of haptic interface to implement the same functionality?

E.g., a mechanical *wheel* "feels" better (but would be vulnerable to liquid spills); raised "curbs" on the outer diameter would be a boon to guiding your fingertip without requiring vision (but would make the device some fraction of an inch "thicker"); etc.

I didn't mean *all* circumstances. Rather, I was aasking if there are circumstances (see above) where the iPod technique is *better* than alternative implementations. I.e., what application criteria would lead to *that* as the "ideal" solution?