Tech Briefs Magazine - October 2021 - MD-19

A virtual robot shows different modes of motion - with only feet, with one hand, or with both - as it traverses
rough terrain. (Credit Yu-Chi Lin)
learned to determine how traversable
a path is, allowing it to find a path to
the goal much faster.
However, even when using this traversability
estimate, it is still time-consuming
to plan a long path using traditional
planning algorithms. The re -
searchers used a " divide and conquer "
approach, splitting a path into toughto-traverse
sections, where they can
apply their learning-based method,
and easier-to-traverse sections, where a
simpler path planning method works
better. To do this, they need a geometric
model of the entire environment,
which could be achieved in practice
with a flying drone that scouts ahead
of the robot.
In a virtual experiment with a hu -
manoid robot in a corridor of rubble,
the team's method outperformed previous
methods in success and total time to
plan - both of which are important
when quick action is needed in disaster
scenarios. Over 50 trials, their method
reached the goal 84% of the time comMotion
Design, October 2021
Cov
ToC
pared to 26% for the basic path planner
and took just over two minutes to plan
compared to over three minutes for the
basic path planner.
The researchers also showcased the
method's ability to work on a real-world,
mobile manipulator - a wheeled robot
with a torso and two arms. With the
base of the robot placed on a steep
ramp, it had to use its " hands " to brace
itself on an uneven surface as it
moved. The robot utilized the team's
method to plan a path in just over a
tenth of a second compared to over
3.5 seconds with the basic path planner.
In
future work, the team hopes to
incorporate dynamically stable mo -
tion, similar to the natural movement
of humans and animals, which would
free the robot from having to be constantly
in balance and could improve
its speed of movement.
For more information, contact Dan
Newman at dnewms@umich.edu; 734-7632873.
Free
Info at http://info.hotims.com/79418-707

http://info.hotims.com/79418-707 http://info.hotims.com/79418-936

Tech Briefs Magazine - October 2021

Table of Contents for the Digital Edition of Tech Briefs Magazine - October 2021

Tech Briefs Magazine - October 2021 - Intro
Tech Briefs Magazine - October 2021 - Sponsor
Tech Briefs Magazine - October 2021 - Cov1
Tech Briefs Magazine - October 2021 - Cov2
Tech Briefs Magazine - October 2021 - 1
Tech Briefs Magazine - October 2021 - 2
Tech Briefs Magazine - October 2021 - 3
Tech Briefs Magazine - October 2021 - 4
Tech Briefs Magazine - October 2021 - 5
Tech Briefs Magazine - October 2021 - 6
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Tech Briefs Magazine - October 2021 - 14
Tech Briefs Magazine - October 2021 - 15
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Tech Briefs Magazine - October 2021 - 20
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Tech Briefs Magazine - October 2021 - 56
Tech Briefs Magazine - October 2021 - Cov3
Tech Briefs Magazine - October 2021 - Cov4
Tech Briefs Magazine - October 2021 - CN-Cov1
Tech Briefs Magazine - October 2021 - 2a
Tech Briefs Magazine - October 2021 - 3a
Tech Briefs Magazine - October 2021 - 4a
Tech Briefs Magazine - October 2021 - 5a
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Tech Briefs Magazine - October 2021 - 37a
Tech Briefs Magazine - October 2021 - 38a
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Tech Briefs Magazine - October 2021 - 40a
Tech Briefs Magazine - October 2021 - 41a
Tech Briefs Magazine - October 2021 - 42a
Tech Briefs Magazine - October 2021 - 43a
Tech Briefs Magazine - October 2021 - 44a
Tech Briefs Magazine - October 2021 - MD-Cov1
Tech Briefs Magazine - October 2021 - MD-Cov2
Tech Briefs Magazine - October 2021 - MD-1
Tech Briefs Magazine - October 2021 - MD-2
Tech Briefs Magazine - October 2021 - MD-3
Tech Briefs Magazine - October 2021 - MD-4
Tech Briefs Magazine - October 2021 - MD-5
Tech Briefs Magazine - October 2021 - MD-6
Tech Briefs Magazine - October 2021 - MD-7
Tech Briefs Magazine - October 2021 - MD-8
Tech Briefs Magazine - October 2021 - MD-8A
Tech Briefs Magazine - October 2021 - MD-8B
Tech Briefs Magazine - October 2021 - MD-8C
Tech Briefs Magazine - October 2021 - MD-8D
Tech Briefs Magazine - October 2021 - MD-9
Tech Briefs Magazine - October 2021 - MD-10
Tech Briefs Magazine - October 2021 - MD-11
Tech Briefs Magazine - October 2021 - MD-12
Tech Briefs Magazine - October 2021 - MD-13
Tech Briefs Magazine - October 2021 - MD-14
Tech Briefs Magazine - October 2021 - MD-15
Tech Briefs Magazine - October 2021 - MD-16
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Tech Briefs Magazine - October 2021 - MD-19
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Tech Briefs Magazine - October 2021 - MD-21
Tech Briefs Magazine - October 2021 - MD-22
Tech Briefs Magazine - October 2021 - MD-23
Tech Briefs Magazine - October 2021 - MD-24
Tech Briefs Magazine - October 2021 - MD-Cov3
Tech Briefs Magazine - October 2021 - MD-Cov4
Tech Briefs Magazine - October 2021 - ST-Cov1
Tech Briefs Magazine - October 2021 - ST-Cov2
Tech Briefs Magazine - October 2021 - ST-1
Tech Briefs Magazine - October 2021 - ST-2
Tech Briefs Magazine - October 2021 - ST-3
Tech Briefs Magazine - October 2021 - ST-4
Tech Briefs Magazine - October 2021 - ST-5
Tech Briefs Magazine - October 2021 - ST-6
Tech Briefs Magazine - October 2021 - ST-7
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Tech Briefs Magazine - October 2021 - ST-9
Tech Briefs Magazine - October 2021 - ST-10
Tech Briefs Magazine - October 2021 - ST-11
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Tech Briefs Magazine - October 2021 - ST-15
Tech Briefs Magazine - October 2021 - ST-16
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Tech Briefs Magazine - October 2021 - ST-18
Tech Briefs Magazine - October 2021 - ST-19
Tech Briefs Magazine - October 2021 - ST-20
Tech Briefs Magazine - October 2021 - ST-21
Tech Briefs Magazine - October 2021 - ST-22
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Tech Briefs Magazine - October 2021 - ST-Cov3
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