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Robotics @ Plymouth · 2018. 1. 6. · Laser Range Finders Ultra Sonics ( Sonar) Simple switches...
Transcript of Robotics @ Plymouth · 2018. 1. 6. · Laser Range Finders Ultra Sonics ( Sonar) Simple switches...
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Robotics @ Plymouth
University of Plymouth
Joerg Wolf & Paul RobinsonCentre for Robotics and Intelligent Systems
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Overview of Activities
� Robotics Research Groups at Plymouth� Robotics Club� Robot Football Team
(Focus: Robot Football)� What can this Robots do for Industry
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Research Group: MIDAS
� Marine & Industrial Dynamic Analysis:� Surface and Underwater Autonomous Vehicles
� Advanced Intelligent Control Systems� Fuzzy logic� Multi Sensor Fusion
(Principal Investigator: Prof. Robert Sutton)
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Research Group:ADAPTIVE BEHAVIOUR & COGNITION
� Emergence of Communication between robots and robots with humans
� Adaptive Intelligent behavior
(Principal Investigator: Prof. Angelo Cangelosi)
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Centre for Robotics and Intelligent Systems
� Instructions to Robots in Natural Language
Route Instructions Game Instructions
(Principal Investigator: Dr. Guido Bugmann)
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Centre for Robotics and Intelligent Systems
� Plankton Recognition
(Natural Object Categorization)
(Principal Investigator: Dr. Phil Culverhouse)
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Robotics Club� Students peruse their
own projects
� Slothbot
(Art build by the Robotics Club for the Institute of Digital Art & Technology )
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Robot Football
� What is Robot Football ?�fully Autonomous Robotic Players
that play football
� Worldwide organizers of Robot Football Competitions:� FIRA� RoboCup
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Robot Football
� What makes a robot intelligent?
�Intelligent information processing�Sensors provide information for
processing
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Robot Football
� Sensors used in Robotics:�Camera� Infra-Red Distance Sensors�Laser Range Finders�Ultra Sonics ( Sonar)�Simple switches�Gyros�…
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Robot Football:Comparing Robotic Intelligence:� RoboSapienSensors: - switches
Remote Controlled
� Robot Football HumanoidSensors: -Camera
-Gyros-Force feedback
Completely Autonomous
(HanSaram from KAIST)
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Robot FootballSystem Overview
� MiroSot LeagueCamera
Image
Processing
Strategy
Robot
movement
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Robot Football Image Processing
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Robot FootballImage Processing
Must be very fast: 50 – 100fps
� Avoid Floating Point Calculations / Convolution based Filters
� Avoid Processing every Pixel
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Robot FootballStrategy Overview
� Role Selection� Individual Player State Engine� Guidance System� Low Level Control
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Robot FootballStrategy – Role Selection
Striker
Striker Assistant
Defender1
Defender2
Goalkeeper
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Robot FootballPlayer Strategy
Striker
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Robot FootballStrategy: Guidance System
∆x
∆yΘerror
Θrobot
ΘTarget
Targetroboterror
Target ),(atan2
θθθ
θ
−=
∆∆= XY
� Line of Sight Guidance or Missile Guidance
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Robot FootballRobot Control
ω
V
VLeft
VRight
r
VV
VVV
LR
LR
2
2−=
+=
ω
� The robots heading angle at an instant is in the same direction as its velocity vector V
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Robot FootballRobot Control� Control System for one of the two wheels:
PID Robot
V
Θrobot
ωdemandΘerror
ΘTarget
VRight-dem.
VLeft-dem.
+
-
++
Θrobot
yx
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Robot Football
Videos
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Mark1 - Lego
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Mark 1 - Lego
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Mark 2 – Aluminium Sheet
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Mark 2 – Aluminium Sheet
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Mark 2 – Aluminium Sheet
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Mark 3 – Modular
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Mark 3 - Modular
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Mark 3 - Modular
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Mark 4 –commercially produced Mark 3
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Mark 5 Robot Body Design
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The Mark 5 prototype robot
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Mark 5 wheel assembly
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Mark 5 – the base
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Mass produced Mark 5 robot
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Mark 6 – Prototype design
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Mark 6 – Prototype design
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Mark 1 Lego motors & gears
Marks 2,3,5 Swallow AO62
Marks 5,6 Faulhaber motors & machined gears & wheels
Robot FootballDrive Chain
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Robot FootballFaulhaber motor
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�Atmel Mega 64 (16 MHz)�Surface mount technology�H-bridge – MOSFET�Current limiting�Radiometrix RX2/TX2 wireless
serial communication
Robot FootballOn-Board Electronics
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The Mark5 circuit board
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Mark 6 circuit board
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�UHF FM 433/869 MHz � [ control 1 control 2 L R L R L R L R
L R chksum ]
�Alternatives? – Bluetooth, IEEE 802.11b, wireless USB?
Robot FootballMiroSot Radio Communications
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Robot Football and Industry
Overview:� Contributions to Science and Industry� Benefits for Students
� producing capable engineers� Utilising/Creating the latest Technology� Comparison to Motor Sports
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Robot FootballContributions to Science and Industry
� New algorithms for real time image processing� Multi-agent behaviour (task sharing)� Autonomous path planning and navigation� High speed control of autonomous vehicles� Predictive control
Teams must submit a scientific paper to be admitted to a Robot Football FIRA WorldCup
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Robot FootballBenefits for Students � Provides practical experience to students� Students get in touch with latest technology
� producing capable engineers for industry
� Students are able to publish scientific papers as undergraduates
� Students get to travel around the world(next FIRA WorldCups are in San Francisco and in China)
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Robot FootballUtilising latest TechnologyCase-study MiroSot (Wheeled robots)� Smallest Chips available, multi-layer PCBs are
required for the next generation
� Faulhaber motors usually used for high-tech aerospace and medical applications (worth £80 each)
� Latest camera technology using the new Firewire standard 1394b or Gigabit Ethernet. (cameras with up to 500 fps)
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Robot FootballUtilising latest Technology
Case-study HuroSot (Walking robots with vision)
� Smallest Chips available(e.g. XScale or AMD Geode embedded processors)
� Real-time Emedded Linux� Powerful Model Servos (10 – 20 Kgcm)
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Robot FootballComparison to Motor Sports
Similarities:� Low centre of gravity� Low inertia� Research on tyre material� Race track timing to test performance� Utilising latest technology
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Questions?