Walking Like A Human: TU Delft Robot Flame

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Walking Like A Human: TU Delft Robot Flame

http://www.medicalnewstoday.com/articles/108605.php

Researcher Daan Hobbelen of TU Delft has developed a new, highly-

advanced walking robot: Flame. This type of research, for which

Hobbelen will receive his PhD on Friday 30 May, is important as it

provides insight into how people walk. This can in turn help people

with walking difficulties through improved diagnoses, training and

rehabilitation equipment.

If you try to teach a robot to walk, you will discover just how

complex an activity it is. Walking robots have been around since the

seventies. The applied strategies can roughly be divided into two

types. The first derives from the world of industrial robots, in

which everything is fixed in routines, as is the case with factory

robots. This approach can, where sufficient time and money are

invested, produce excellent results, but there are major restrictions

with regard to cost, energy consumption and flexibility.

Human

TU Delft is a pioneer of the other method used for constructing

walking robots, which examines the way humans walk. This is really

very similar to falling forward in a controlled fashion. Adopting

this method replaces the cautious, rigid way in which robots walk

with the more fluid, energy-efficient movement used by humans.

PhD student Daan Hobbelen has demonstrated for the first time that a

robot can be both energy-efficient and highly stable. His

breakthrough came in inventing a suitable method for measuring the

stability of the way people walk for the first time. This is

remarkable, as 'falling forward' is traditionally viewed as an

unstable movement.

Next he built a new robot with which he was able to demonstrate the

improved performance: Flame (for films, see

http://www.dbl.tudelft.nl/ Biped robots). Flame contains seven

motors, an organ of balance and various algorithms which ensure its

high level of stability.

For instance, the robot can apply the information provided by its

organ of balance to place its feet slightly further apart in order to

prevent a potential fall. According to Hobbelen, Flame is the most

advanced walking robot in the world, at least in the category of

robots which apply the human method of walking as a starting

principle.

Rehabilitation

Modelling the walking process allows researchers to construct two-

legged robots which walk more naturally. More insight into the

walking process can in turn help people with walking difficulties,

for example through improved diagnoses, training and rehabilitation

equipment. TU Delft is working on this together with motion

scientists at VU University Amsterdam.

Hobbelen cites ankles as an example. These joints are a type of

spring which can be used to define the best level of elasticity.

Research conducted by Hobbelen into Flame's ankles has provided

motion scientists with more insight into this topic.

Football-playing robots

Over the next few years, TU Delft intends to take major steps forward

in research into walking robots. These include developing walking

robots which can 'learn', see and run.

One very special part of the robot research concerns football-playing

robots. On Thursday 29 May, together with the University of Twente,

TU Eindhoven and Philips, TU Delft will present the Dutch RoboCup

team which is to participate in the 2008 RoboCup Soccer in China this

summer. This presentation will take place at TU Delft during the

international Dynamic Walking 2008 conference held from 26-29 May.

Biomechanics experts, motion scientists and robot experts will come

together at this event to exchange expertise on the walking process.

Delft Robotlab: http://www.dbl.tudelft.nl/

Dynamic Walking 2008: http://www.dynamicwalking.org/

RoboCupteam: http://www.dutchrobotics.net/