Honda "Drive by Wire" question... what if the power goes out?

And you can just cut the death belts with scissors and strip the
plastic padding of death from the dash board. The lethally collapsing
steering wheel is harder to disable, but the original level of safety
can be restored by bracing a 4X4 timber against the frame pointed at
your head. Don't forget to remove the side impact death beams from
the doors and replace the death glass windshield with plate glass from
the local window repair company.

 

I believe there is some investigation with electrical steering being
developed in much the way power assisted steering has been developed:
ie: assisted but not completely powered. It makes for interesting
reading. Cant find the article, but I think the Magazine was "Silicon
Chip" an Aussie mag.
Would be fun to hook it up to GPS. You could read the mag on the way to
work, never having touched the steering wheel.

 

I believe there is some investigation with electrical steering being
developed in much the way power assisted steering has been developed:
ie: assisted but not completely powered. It makes for interesting
reading. Cant find the article, but I think the Magazine was "Silicon
Chip" an Aussie mag.
Would be fun to hook it up to GPS. You could read the mag on the way to
work, never having touched the steering wheel.

 

My what an ignorant idiot you are. Only the "death bags" are capable of
causing an accident and have been documented doing so.

Pete C.

 

My what an ignorant idiot you are. Only the "death bags" are capable of
causing an accident and have been documented doing so.

Pete C.

 

The fact remains that seat belts are not capable of causing an accident
while airbags are and have been documented as doing so.

Pete C.

 

The fact remains that seat belts are not capable of causing an accident
while airbags are and have been documented as doing so.

Pete C.

 

Ah the old "technology is bad/technology is good" debate. This argument
has been around for literally centuries.

It boils down to a standard cost/benefit analysis. BTW, please ignore
marketing crap and dig deeper on anything.

A container for drinking liquids really hasn't changed in many
centuries; just slight variations. Some things have reached the limit
of advancement.

Most systems in cars that have electronics have benefited. Far too many
people replace ECMs and other electronics in cars that are working
properly, when a mechanical problem is usually the root cause.

 

Ah the old "technology is bad/technology is good" debate. This argument
has been around for literally centuries.

It boils down to a standard cost/benefit analysis. BTW, please ignore
marketing crap and dig deeper on anything.

A container for drinking liquids really hasn't changed in many
centuries; just slight variations. Some things have reached the limit
of advancement.

Most systems in cars that have electronics have benefited. Far too many
people replace ECMs and other electronics in cars that are working
properly, when a mechanical problem is usually the root cause.

 

So when you "drive" you don't steer as part of the process?

Perhaps true, but irrellivant. The name chosen implies that it does exist
for those customers that may not be up on technology (or even understand
what technology is available).

 

So when you "drive" you don't steer as part of the process?

Perhaps true, but irrellivant. The name chosen implies that it does exist
for those customers that may not be up on technology (or even understand
what technology is available).

 

Check out the chevy malibu it is drive by wire steering

 

Check out the chevy malibu it is drive by wire steering

 

No it's not. It has an electric power steering, but that just replaces the
ususal hydraulic power steering. The steering wheel is still physically
connected to the steering mechanism.

Steer-by-wire would imply *no* physical connection between the steering
wheel and the wheels, i.e., a computer would measure the position of the
steering wheel and command a hydraulic or electric actuator that would
then turn the wheels. AFAIK no such car exists on the market today
precisely because and electrical failure would leave you with absolutely
no control over the vehicle <shudder>.

 

No it's not. It has an electric power steering, but that just replaces the
ususal hydraulic power steering. The steering wheel is still physically
connected to the steering mechanism.

Steer-by-wire would imply *no* physical connection between the steering
wheel and the wheels, i.e., a computer would measure the position of the
steering wheel and command a hydraulic or electric actuator that would
then turn the wheels. AFAIK no such car exists on the market today
precisely because and electrical failure would leave you with absolutely
no control over the vehicle <shudder>.

 

The chevy malibu doesn't use drive by wire steering.
It is merely electricaly assisted mechanical steering.
http://www.delphi.com/pdf/ppd/chsteer/is_col_assist.pdf

 

The chevy malibu doesn't use drive by wire steering.
It is merely electricaly assisted mechanical steering.
http://www.delphi.com/pdf/ppd/chsteer/is_col_assist.pdf

 

Nothing wrong with 'brake by wire' - its actually in many ways MORe
safe than traditional methods. Standard hydraulic methods use an imput
to force the brakes to engage. If a componant in that chain fails,
then that chain is broken, and the brakes affected by that chain don't
engage. I had my master cylinder in my 88 civic go out suddenly a year
ago, luckily the wife was just pulling into a parking space at the
time, and used the handbrake to stop, and only slightly nudged the
facing car (at about 2mph)

From what i rmeber of the 'brake by wire' system, it uses the opposite
method. the brakes are on by default, and its the pressing of the
pedal that brings it to default, until then, the position of the pedal
inhibits the default. If something then brakes, the default is for the
brakes to be activated. rather than not at all. Its what we call a
'failsafe' system. If something FAILs the system goes SAFE, FAIL-SAFE,
see?

Thinking how i'd apply the brakes, a sudden on would tend to induce a
lockup, possibly dangerous, so maybe a small wheel-fed generation of
power (regen braking) powering a backup control system, the ABS,
steering, and so on, in case of main power failure. and then, probably
a manual pressure bleed resevoir for afterwards, to release the brakes
for it to be towed. ADmitedly more complex, but in theory, anyway, a
safer system. since you're not totally screwed if the master cylinder
goes (and i've replaced 2 of them in the past year, one per vehicle)


Admitedly, *-by-wire systems aren't as muhch of an advantage, as they
are in larger 'evices' Aircrafts, ships would need a huge amount more
control systems space and weight, and the imputs would have to be
excessively high for manual linkage systems to be utilisable. Of a
cars systems, throttle-by-wire is the simplest (in fact, technically
they're all 'by wire' just a steel one and not an electrical one.
Gearchange by wire is used in a lot of cars (flappy paddle gearboxes
for instance) and brake by wire is described above (well, one
implimentation of it) Steering by wire is a different matter. Tried it
once (sorta) in a LHD car, using dual controls. except i used a
motorised steering unit, connected to a computer steering wheel (like
you use for Need for Speed and Gran Turismo) to drive it, sitting in
the front passenger seat (where a brit would sit to drive) was VERY
weird,, having no feedback through the wheel, no grip indications, or
even turn resistance. 30-40mph around a quarry was about as adentalin
pumping as co-driving a raly,

 

Nothing wrong with 'brake by wire' - its actually in many ways MORe
safe than traditional methods. Standard hydraulic methods use an imput
to force the brakes to engage. If a componant in that chain fails,
then that chain is broken, and the brakes affected by that chain don't
engage. I had my master cylinder in my 88 civic go out suddenly a year
ago, luckily the wife was just pulling into a parking space at the
time, and used the handbrake to stop, and only slightly nudged the
facing car (at about 2mph)

From what i rmeber of the 'brake by wire' system, it uses the opposite
method. the brakes are on by default, and its the pressing of the
pedal that brings it to default, until then, the position of the pedal
inhibits the default. If something then brakes, the default is for the
brakes to be activated. rather than not at all. Its what we call a
'failsafe' system. If something FAILs the system goes SAFE, FAIL-SAFE,
see?

Thinking how i'd apply the brakes, a sudden on would tend to induce a
lockup, possibly dangerous, so maybe a small wheel-fed generation of
power (regen braking) powering a backup control system, the ABS,
steering, and so on, in case of main power failure. and then, probably
a manual pressure bleed resevoir for afterwards, to release the brakes
for it to be towed. ADmitedly more complex, but in theory, anyway, a
safer system. since you're not totally screwed if the master cylinder
goes (and i've replaced 2 of them in the past year, one per vehicle)


Admitedly, *-by-wire systems aren't as muhch of an advantage, as they
are in larger 'evices' Aircrafts, ships would need a huge amount more
control systems space and weight, and the imputs would have to be
excessively high for manual linkage systems to be utilisable. Of a
cars systems, throttle-by-wire is the simplest (in fact, technically
they're all 'by wire' just a steel one and not an electrical one.
Gearchange by wire is used in a lot of cars (flappy paddle gearboxes
for instance) and brake by wire is described above (well, one
implimentation of it) Steering by wire is a different matter. Tried it
once (sorta) in a LHD car, using dual controls. except i used a
motorised steering unit, connected to a computer steering wheel (like
you use for Need for Speed and Gran Turismo) to drive it, sitting in
the front passenger seat (where a brit would sit to drive) was VERY
weird,, having no feedback through the wheel, no grip indications, or
even turn resistance. 30-40mph around a quarry was about as adentalin
pumping as co-driving a raly,

 

There was a story in the news in the last few days. Mercedes was doing a
demo of their braking control systems. Three Mercedes drove into the
lecture hall, and they were each supposed to be brought to a stop entirely
by the collision avoidance system.

Three smashes later, they were, indeed, all stopped.
The Mercedes story had something to do with an adjacent metal wall and
echoes.

This wasn't the brake by wire that failed, per se, but amusing anyway.

<http://www.askaprice.com/torque-article.asp?article=Mercedes_makes_mess_of_safety_demonstration&item=669>