Low Jerk Throttle & Brake Controllers for Public Buses

B

Bret Cahill

Guest
Some railroad reg. requires a passenger train to decelerate with a
jerk < 2 m/sec^3. Don't how or even if they do it on trains but it's
a good idea to keep the jerk down when passengers are out of their
seats and walking to an exit.

It could be done automatically on public buses to reduce tumbling down
the aisle incidents. It would also reduce the multi tasking load on
bus drivers trying to pull out into heavy traffic before passengers
are seated..

The brake pedal would have an override, i.e., stomping all the way
down, in case a pedestrian stepped out in front of the bus.

The number of elderly will soar along with fuel prices so this will
save a lot of lives.


Bret Cahill
 
"Bret Cahill" <BretCahill@peoplepc.com> wrote in message
news:033b94a1-5b41-4c8d-a97c-d39e91f4a028@x11g2000prb.googlegroups.com
Some railroad reg. requires a passenger train to decelerate with a
jerk < 2 m/sec^3. Don't how or even if they do it on trains but it's
a good idea to keep the jerk down when passengers are out of their
seats and walking to an exit.

It could be done automatically on public buses to reduce tumbling down
the aisle incidents. It would also reduce the multi tasking load on
bus drivers trying to pull out into heavy traffic before passengers
are seated..

The brake pedal would have an override, i.e., stomping all the way
down, in case a pedestrian stepped out in front of the bus.

The number of elderly will soar along with fuel prices so this will
save a lot of lives.


Bret Cahill
Click to expand...
Gee, that was almost interesting.
 
On 2011-08-31, Bret Cahill <BretCahill@peoplepc.com> wrote:
Some railroad reg. requires a passenger train to decelerate with a
jerk < 2 m/sec^3. Don't how or even if they do it on trains but it's
a good idea to keep the jerk down when passengers are out of their
seats and walking to an exit.
Click to expand...

It could be done automatically on public buses to reduce tumbling down
the aisle incidents. It would also reduce the multi tasking load on
bus drivers trying to pull out into heavy traffic before passengers
are seated..
Click to expand...
sounds dangerous. trains don't have to deal with other traffic.

you should try this on a simulator, perhaps the TORCS software could be
modified to emulate with your constraints.

--
⚂⚃ 100% natural

--- Posted via news://freenews.netfront.net/ - Complaints to news@netfront.net ---
 
On Aug 31, 11:36 pm, Bret Cahill <BretCah...@peoplepc.com> wrote:
Some railroad reg. requires a passenger train to decelerate with a
jerk < 2 m/sec^3.  Don't how or even if they do it on trains but it's
a good idea to keep the jerk down when passengers are out of their
seats and walking to an exit.

It could be done automatically on public buses to reduce tumbling down
the aisle incidents.  It would also reduce the multi tasking load on
bus drivers trying to pull out into heavy traffic before passengers
are seated..

The brake pedal would have an override, i.e., stomping all the way
down, in case a pedestrian stepped out in front of the bus.

The number of elderly will soar along with fuel prices so this will
save a lot of lives.

Bret Cahill
Click to expand...
There has to be a reason why you've posted this on alt.g-w, surely?
 
Dear Dawlish:

On Sep 1, 4:07 am, Dawlish <pjg...@hotmail.com> wrote:
On Aug 31, 11:36 pm, Bret Cahill <BretCah...@peoplepc.com> wrote:
Bret Cahill

There has to be a reason why you've posted this on
alt.g-w, surely?
Click to expand...
He doesn't feel like he exists if someone is not giving him sh*t about
his ideas. Plenty of that being flung in alt.g-w.

David A. Smith
 
On 2011-08-31, Bret Cahill <BretCahill@peoplepc.com> wrote:
Some railroad reg. requires a passenger train to decelerate with a
jerk < 2 m/sec^3. Don't how or even if they do it on trains but it's
a good idea to keep the jerk down when passengers are out of their
seats and walking to an exit.
Click to expand...
IMHO, the location of the jerk is the driver's seat, so that's where
you want to be removing the problem.
 
Some railroad reg. requires a passenger train to decelerate with a
jerk < 2 m/sec^3.  Don't how or even if they do it on trains but it's
a good idea to keep the jerk down when passengers are out of their
seats and walking to an exit.

It could be done automatically on public buses to reduce tumbling down
the aisle incidents.  It would also reduce the multi tasking load on
bus drivers trying to pull out into heavy traffic before passengers
are seated..

The brake pedal would have an override, i.e., stomping all the way
down, in case a pedestrian stepped out in front of the bus.

The number of elderly will soar along with fuel prices so this will
save a lot of lives.

Bret Cahill

There has to be a reason why you've posted this on alt.g-w, surely?
Click to expand...
A bus can operate at up to 200 passenger miles / gallon.


Bret Cahill
 
Some railroad reg. requires a passenger train to decelerate with a
jerk < 2 m/sec^3.  Don't how or even if they do it on trains but it's
a good idea to keep the jerk down when passengers are out of their
seats and walking to an exit.
It could be done automatically on public buses to reduce tumbling down
the aisle incidents.  It would also reduce the multi tasking load on
bus drivers trying to pull out into heavy traffic before passengers
are seated..

sounds dangerous. trains don't have to deal with other traffic.
Click to expand...
The jerk could be restricted a lot and the responsiveness would be
undetectable to the driver.

This is before over rides in the braking system.

you should try this on a simulator, perhaps the TORCS software could be
modified to emulate with your constraints.
Click to expand...
How gauche! A lofty philosopher would _never_ resort to simulators!

It's much faster and easier to ask the math folk for some spline
functions.


Bret Cahill
 
There has to be a reason why you've posted this on
alt.g-w, surely?

He doesn't feel like he exists if someone is not giving him sh*t about
his ideas.  Plenty of that being flung in alt.g-w.
Click to expand...
You were against high jerk aircraft and now it appears you oppose low
jerk vehicles.

You get one more chance:

http://www.epicurious.com/recipes/food/views/Jamaican-Jerk-Chicken-234807

Get back and tell us how it turned out.


Bret Cahill
 
Some railroad reg. requires a passenger train to decelerate with a
jerk < 2 m/sec^3.  Don't how or even if they do it on trains but it's
a good idea to keep the jerk down when passengers are out of their
seats and walking to an exit.
It could be done automatically on public buses to reduce tumbling down
the aisle incidents.  It would also reduce the multi tasking load on
bus drivers trying to pull out into heavy traffic before passengers
are seated..

sounds dangerous. trains don't have to deal with other traffic.
Click to expand...
High velocity doesn't imply high acceleration and high acceleration or
deceleration doesn't imply high jerk.

The jerk could be restricted a lot and the responsiveness would be
undetectable to the driver.
Click to expand...
Some of the highest jerk is lateral at least in the front of the bus
when the driver turns esp. pulling away from the curve. The front of
the bus it typically where passengers are walking just after
boarding.

The steering could also be controlled with very little impact on
driveability.

Over rides, of course, in the steering and braking are easy to include
in the overall system.

This is before over rides in the braking system.

you should try this on a simulator, perhaps the TORCS software could be
modified to emulate with your constraints.

How gauche!  A lofty philosopher would _never_ resort to simulators!

It's much faster and easier to ask the math folk for some spline
functions.

Bret Cahill
Click to expand...
 
Dear Bret Cahill:

On Sep 1, 9:13 am, Bret Cahill <Bret_E_Cah...@yahoo.com> wrote:
There has to be a reason why you've posted this on
alt.g-w, surely?

He doesn't feel like he exists if someone is not giving
him sh*t about his ideas.  Plenty of that being flung in
alt.g-w.

You were against high jerk aircraft and now it appears
you oppose low jerk vehicles.
Click to expand...
Newsgroups have charters. Newsgroups have recommended guidelines for
posting. The first guideline, is post to only one newsgroup. The
second guideline is if the topic of discussion is really also germaine
to another newsgroup, then add another one. If you go over 3, you are
a spammer.

You had no idea what you were talking about in jerking aircraft or
ships apart, and only continued to post, contradicting yourself with
every other post, as long as anyone replied to you. This albatross is
hanging over your shoulder.

Reducing / controlling jerk in a multiton passenger vehicle is NOT a
topic for alt.g-w. So you have to be looking for emotional "stokes".

David A. Smith
 
Dawlish wrote:
On Aug 31, 11:36 pm, Bret Cahill <BretCah...@peoplepc.com> wrote:
Some railroad reg. requires a passenger train to decelerate with a
jerk < 2 m/sec^3.  Don't how or even if they do it on trains but it's
a good idea to keep the jerk down when passengers are out of their
seats and walking to an exit.

It could be done automatically on public buses to reduce tumbling down
the aisle incidents.  It would also reduce the multi tasking load on
bus drivers trying to pull out into heavy traffic before passengers
are seated..

The brake pedal would have an override, i.e., stomping all the way
down, in case a pedestrian stepped out in front of the bus.

The number of elderly will soar along with fuel prices so this will
save a lot of lives.

Bret Cahill

There has to be a reason why you've posted this on alt.g-w, surely?
Click to expand...
Yes - he's an idiot.

Hope This Helps!
Rich
 
Dawlish wrote:
On Aug 31, 11:36 pm, Bret Cahill <BretCah...@peoplepc.com> wrote:
Some railroad reg. requires a passenger train to decelerate with a
jerk < 2 m/sec^3. Don't how or even if they do it on trains but it's
a good idea to keep the jerk down when passengers are out of their
seats and walking to an exit.

It could be done automatically on public buses to reduce tumbling down
the aisle incidents. It would also reduce the multi tasking load on
bus drivers trying to pull out into heavy traffic before passengers
are seated..

The brake pedal would have an override, i.e., stomping all the way
down, in case a pedestrian stepped out in front of the bus.

The number of elderly will soar along with fuel prices so this will
save a lot of lives.

Bret Cahill

There has to be a reason why you've posted this on alt.g-w, surely?
Click to expand...

|----||----|
| DO NOT |
| FEED THE |
| TROLLS! |
|----||----|
||
||
||
/|\\|/||||//|||/\???\\//\\\\/|?\/\\\\/\/\/\||||\


--
You can't have a sense of humor, if you have no sense.
 
On 9/1/2011 6:32 AM, Jasen Betts wrote:

...

sounds dangerous. trains don't have to deal with other traffic.
Click to expand...
Legislators smetimes overreact. After a disastrous train wreck at a
grade crossing, one Western state passed a law requiring that "When two
trains shall meet at grade, each shall stop until the other is out of
sight." The Governor vetoes it.

...

Jerry
--
Engineering is the art of making what you want from things you can get.
 
yes, but high jerk implies high acceleration;
I'm waiting for the flying broom &/or carpet,
surely in stages of development.
 
yes, but high jerk implies high acceleration;
Click to expand...
Only if the high jerk is over a period of time will the accelleration
be high.

Try doing the same with velocity/accelleration and it will be easier
to understand. High velocity does not imply high accelleration. When
it comes to accelleration from a constant power source then high
velocity implies low accelleration. That's why turbo charging is so
popular. You need a lot of power to pass at high speeds.

If you do this with simple harmonic motion the highest absolute value
of jerk coincides with 0 accelleration and vice versa.

The effect on drivability will be the opposite problem:

Going from parked [zero accelleration zero velocity] and then trying
to accelerate into traffic while keeping jerk low.


Bret Cahill
 
There has to be a reason why you've posted this on
alt.g-w, surely?

He doesn't feel like he exists if someone is not giving
him sh*t about his ideas.  Plenty of that being flung in
alt.g-w.

You were against high jerk aircraft and now it appears
you oppose low jerk vehicles.

Newsgroups have charters.  

Newsgroups have recommended guidelines for
posting.  The first guideline, is post to only one newsgroup.  
Click to expand...
Unless ignorance of a poster needs to be exposed.

In that case your only hope is to proffer some calculations or
reasoning or everyone will be able to see you can't do 2nd year level
engineering.

The
second guideline is if the topic of discussion is really also germaine
to another newsgroup, then add another one.  
Click to expand...
AGND (ain't got no data) climate change deniers are a staple on
alt.global warming.

Climate scientists need to know that there are also have AGNC (ain't
got no calculations) technology deniers.


Bret Cahill
 
Some railroad reg. requires a passenger train to decelerate with a
jerk < 2 m/sec^3.  Don't how or even if they do it on trains but it's
a good idea to keep the jerk down when passengers are out of their
seats and walking to an exit.

It could be done automatically on public buses to reduce tumbling down
the aisle incidents.  It would also reduce the multi tasking load on
bus drivers trying to pull out into heavy traffic before passengers
are seated..

The brake pedal would have an override, i.e., stomping all the way
down, in case a pedestrian stepped out in front of the bus.

The number of elderly will soar along with fuel prices so this will
save a lot of lives.

Bret Cahill

There has to be a reason why you've posted this on alt.g-w, surely?

Yes - he's an idiot.

Hope This Helps!
Click to expand...
You certainly helped demonstrate that you can't do sophomore level
engineering calculations.

Far worse you demonstrated you don't even know how to google.

Now are you going to search the terms in the OP or are you going to
keep on digging yourself deeper and deeper into your hole?


Bret Cahill
 
well, some of that is obvious,
even though I've never thought of it, before;
what do you mean by harmonic motion,
applied to wheels?

If you do this with simple harmonic motion the highest absolute value
of jerk coincides with 0 accelleration and vice versa.

Going from parked [zero accelleration zero velocity] and then trying
to accelerate into traffic while keeping jerk low.
Click to expand...
 
I've been studying it casually for decades, and
it is based upon atotally faulty model,
essentailly the Mercator projection,
where the poles are singularities. now,
go to your space science dept., and
they're all about the poles.

give you a for-instance:
how many "holes" in the ozonosphere are there, and
when was the biggest one first discovered (not in the '70s
by the TOMS) ??

> AGND (ain't got no data) climate change deniers are a staple on
 
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