Research
Interests (1)
Artificial Intelligence applied to tetherless dynamical
mechanical systems (a) I am fascinated
by the use of many microcomputers to control autonomous
and tetherless dynamical mechanical systems, otherwise
known as "robots". These systems concern machines
that move around on land, in and under the water and
in the air. I am not working on static machines e.g.
machines used in industry although I can see that the
architectures and computing techniques I am using for
moving machines can also be used for static machines.
The recent developments in integrated circuits are now
enabling the design of robots that were previously impossible.
The latest microcomputers run very fast at speeds of
100 million instructions per second and are tiny. I
am working on how to get many small microcomputers to
control mechanical systems. I am not interested in using
the personal computer as my computing engine since it
is too big, too heavy and too inefficient at computing.
These microcomputers, inside one machine, must communicate
with each other and at the same time carry out individual
tasks. For example a microcomputer based computer vision
system that recognises shapes, the orientation of shapes
and the size of shapes together with many microcomputers
that control the many "muscles" (servomechanisms)
of a six-legged walking robot.....how do you manage
a complex arrangement of microcomputers?
(b) Also I am working on how each machine can communicate
with other machines as in team playing robots. Once
you've got each machine internally programmed then it
is natural to move into the area of behaviour robotics.
I've got ten six-legged robots assembled and functional.
Each robot has nine on-board microcomputers that do
multi-tasking computation. The top level intelligence
microcomputer specifies a clockwise or counterclockwise
body rotation about an arbitrary instantaneous centre-of-rotation
and the other eight microcomputers are organised to
calculate how to achieve this. (Straight line motion
specified by setting instantaneous centre of rotation
at infinity.) Other behaviour patterns can be initiated
by the top level intelligence microcomputer from a behaviour
menu. Eventually each robot will have an on-board computer
colour vision system. I and my students are writing
our own software do to this. I insist on self-reliance.
I will not copy other people's software; it's more fun
any way to develop things yourself.
(2)Tetherless,
lightweight reciprocating mass dynamical mechanical
systems
Tetherless, lightweight, reciprocating mass, dynamical
mechanical systems represent most animal locomotion.
However this is a new research area which goes hand-in-hand
with the miniaturisation and high computing power of
microcomputers together with the latest materials and
prime movers that are available, e.g. carbon fibre and
brushless dc motors. A quintessential research area
for such mechanical systems is a tetherless bat robot
that will hover and fly. This is my latest research
project.
The bat will have a 2metre wingspan and the wings will
be able to fold (retract) and unfold (protract) at between
3 times a second and 5 times a second. I will use a
stored energy system for this. Birds, bats, insects
horses, cheetahs, and fish are just a few of the creatures
that use stored energy in tetherless lightweight reciprocating
mass dynamical mechanical systems. These systems can
and are generating ground-breaking research projects
in mechanical engineering and cocks a snoot at anybody
who has a basic lack of imagination and who talks about
mechanical engineering sunset industries. Don't forget
when the sun goes down, it comes up again at the birth
of a new day!!
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