Autonomous Vehicle Engineering - March 2021 - 5
Cover Story
"
BMW
Autonomous emergency braking on motorcycles is going to be quite difficult
to achieve. The rider has to be in a ready position to brace for the deceleration.
"
BMW features the Bosch radar-based ACC system
on its 2021 R 1250 RT touring bike.
is sitting at ABS with an IMU integration or traction
control in an IMU integration, which is a very powerful
system for a motorcycle, " explained Edward Fatzinger,
forensic engineer, Momentum Engineering Corp.,
speaking at SAE's 2020 WCX ADAS systems expert
panel. " It's essentially stability control, and to me, that's
an advanced driver-assist platform. "
" The IMU is an integral component of the system
and the ABS and MSC [stability] functionality we've
been implementing for many years in motorcycles, "
explained Justin Magri, technical project manager
for two-wheel and powersports business for Bosch
North America. " Drawing from that experience
in the IMU and understanding the position of the
vehicle allows us to utilize that into the ARAS, what
we call Advanced Rider Assistant Systems. "
IMU-enabled setups are remarkably effective at
managing events initiated by the rider. But unlike mitigating excessive throttle or braking input, where the
system is reacting to a fully engaged pilot and trying
to assist based on intention, ADAS-like automatic
responses could easily catch a rider unprepared.
AUTONOMOUS VEHICLE ENGINEERING
" Autonomous emergency braking on motorcycles is going to be quite difficult to achieve, " Fatzinger
noted, adding that determining rider position will be
the big challenge for advancing ADAS functionality.
" The rider has to be in a ready position to brace for
the deceleration. There's going to have to be force
sensors in the hand grips to tell the system, 'Hey, the
rider's reacting and applying force to the handlebars.'
It's not like a car where the person's seat-belted in, so
the emergency-braking realm is going to be pretty far
off, " he explained.
According to Matt Peters, lead application engineer
for advanced rider systems for Bosch North America,
motorcycle engine character and leaning dynamics also
make things interesting for the new ACC setup. " There's
added challenges understanding exactly the position of
all the targets due to the moving rotation of the radar
due to roll angle, " he said. " In addition, there's a lot of
vibration in the motorcycle which we need to filter in
order to have an accurate course prediction. Course
prediction really is the true underlying technology
behind the motorcycle radar assistance. "
March 2021 5
Autonomous Vehicle Engineering - March 2021
Table of Contents for the Digital Edition of Autonomous Vehicle Engineering - March 2021
Autonomous Vehicle Engineering - March 2021 - CVR4
Autonomous Vehicle Engineering - March 2021 - CVR1
Autonomous Vehicle Engineering - March 2021 - CVR2
Autonomous Vehicle Engineering - March 2021 - 1
Autonomous Vehicle Engineering - March 2021 - 2
Autonomous Vehicle Engineering - March 2021 - 3
Autonomous Vehicle Engineering - March 2021 - 4
Autonomous Vehicle Engineering - March 2021 - 5
Autonomous Vehicle Engineering - March 2021 - 6
Autonomous Vehicle Engineering - March 2021 - 7
Autonomous Vehicle Engineering - March 2021 - 8
Autonomous Vehicle Engineering - March 2021 - 9
Autonomous Vehicle Engineering - March 2021 - 10
Autonomous Vehicle Engineering - March 2021 - 11
Autonomous Vehicle Engineering - March 2021 - 12
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Autonomous Vehicle Engineering - March 2021 - 14
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Autonomous Vehicle Engineering - March 2021 - 18
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Autonomous Vehicle Engineering - March 2021 - 20
Autonomous Vehicle Engineering - March 2021 - 21
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Autonomous Vehicle Engineering - March 2021 - 24
Autonomous Vehicle Engineering - March 2021 - 25
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Autonomous Vehicle Engineering - March 2021 - 27
Autonomous Vehicle Engineering - March 2021 - 28
Autonomous Vehicle Engineering - March 2021 - CVR3
Autonomous Vehicle Engineering - March 2021 - CVR4
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