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Past Events
AGM — 22 November 2012
Guest Speaker:
|
Distinguished Lecturer
Koichi Asatani |
Feature lecture title:
|
Trends in NGN and Its
Issues |
| Venue: |
VUW Railway Building, Level 5, Room RWW501 |
| Date:
|
Thursday 22 Nov 2012
|
Time:
|
6-9 pm |
Cost:
|
Free
|
RSVP:
|
Aplogies
or confirmation of attendance must be sent
to Keith Morris |
Notice is herby given
that the AGM of the IEEE NZ Central Section will be held on Thursday 22
Nov 2012 from 6-9 pm at the VUW Railway Building RWW501.
At the AGM, elections will be held for the new committee which will
take over from Jan 2013. Nominations are herby called for the posts of:
Chairperson
Vice-Chair
Secretary
Treasurer
Executive Committee Members for-
* Membership Development
* Women in Engineering
* Awards Coordinator
* Industry Coordinator
If you would like to nominate someone, including yourself, for any of
the posts, please send an email to g.sengupta@massey.ac.nz.
Nominations will also be accepted from the floor.
The AGM for the NZ Central Joint chapter on Communications,
Signal Processing and Information Theory will be held directly after
the section AGM.
|
Abstract:
The Next Generation Network (NGN) is designed to be capable of QoS
management and controls like in legacy telecommunication networks and
to support economical, versatile multi-media applications like those
on the current Internet. NGN also provides fixed-mobile convergence
(FMC) with generalised mobility, and horizontal and vertical roaming
as well as improved security.
The concepts and architecture of the Next Generation Networks (NGN)
are described. NGN voice and Internet services are attractive from the
view points of service flexibility and cost effectiveness and the
capability of integrating third-party applications with high
dependability and high security. The current status of NGN
implementation in a commercial offer by NTT
(Nippon Telegraph and
Telephone Corporation) is touched upon.
Issues for the global evolution of NGN are also described, such as
IPv6 related issues, impacts of smartphones, global standards and
regulations.
Biography:
Koichi Asatani received his B.E.E.E., M.E.E.E. and Ph. D
degrees from
Kyoto University in 1969, 1971 and 1974, respectively. From 1974 to
1997, Dr. Asatani was engaged in research and
development on optical
fiber communication systems, hi-definition video transmission systems,
FTTH, ISDN, B-ISDN, ATM networks, IP networks and their strategic
planning in NTT. Currently he is Dean, Department of Computer Science
and Communications Engineering, Kogakuin University, and a visiting
professor, Graduate School of Global Information and
Telecommunication, Waseda University, both in Tokyo, Japan. He is a
Fellow of IEEE and a Fellow of IEICE. He was
appointed as a
distinguished lecturer of IEEE Com Soc for 2007-2009 and 2011-2012.
He is a founder of Communications QoS,
Reliability and Performance
Modeling series symposium at ICCs and Globecoms. He served as co-chair
for this symposium series at ICCs and Globecoms for 2002-2004. He is
Ex-Chair and Advisory Board Ex-Chair Emeritus of IEEE Technical
Committee on Communication Quality and Reliability (CQR-TC), Feature
Editor on Standards (1993-1999), Senior Technical Editor/Technical
Editor (1999- ) of IEEE Communications Magazine, and Technical Editor
on Broadband Technology of IEEE Communications Survey. He served
as
Executive Chair for ICC2011 in Kyoto, Japan.
From 1988 through 2000, he served as Vice-Chairman of ITU-T SG 13
(formerly CCITT SG XVIII), responsible for digital networks including
GII, IP networks and NGN. He is serving as Chair for National
Committee on Next Generation Networks in Japan, and also as Chair,
R&D
and Standardizations Working Group, Next Generation IP Network
Promotion Forum.
He has published more than fifty papers, and gave more than seventy
talks including keynotes, invited talks and tutorials at international
conferences such as ICCs and Globecoms. He is author or co-author of
nineteen books including "Quality and Performance Designs of
Telecommunication Networks" (IEICE, 1993, in Japanese), "Introductions
to ATM Networks and B-ISDN)" (John Wiley and Sons, 1997), "Multimedia
Communications Networks - Technologies and Services" (Artech House,
1998), "Multimedia Communications" (Academic Press, 2001),
"Information and Communication Technology and Standards" (Denki
Tsushin Shinko Kyokai, in Japanese, 2006), "Introduction to
Information Networks-Fundamentals of Telecom and Internet Convergence,
QoS, VoIP and NGN" (Corona-sha Publishing Inc., in Japanese, 2007),
and Handbook of Enterprise Integration (CRC Press, 2009). His current
interests are Information Networks and Network Architectures including
Broadband networking, Internetworking, IP telephony, NGN, Future
Networks and their QoS aspects.
|
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Power System Protection Schemes in Modern
Power Systems with Distributed Generation — 5 November 2012
This event is being
orgnised by the local chapter of the IEEE Power & Energy Society
Speaker:
|
Meliha B. Selak, P. Eng
BC Hydro, Protection & Control Planning
Vancouver, BC, Canada
IEEE PES Governing Board, VP Chapters |
| Venue: |
Transpower
House, Ground Floor Seminar Room. |
| Date:
|
Monday, 5th November 2012 |
Time:
|
1030-1130 am |
Cost:
|
Free
- non members welcome to attend too
|
| Abstract: This presentation introduces an overview of the power system modeling and simulations focusing on the transient studies and steady-state simulations. The transmission line data calculation will be presented.
How simulation
results can affect the power system protection schemes will be illustrated on the most recent
installation of the 30 MVA distributed generation connected to the BC
Hydro transmission system. Stability and transient studies results
indicated that some conditions can not be acceptable from
system operation point of view and therefore, some remedial measures
had to be taken. For instance, communication assisted power system protective scheme has
been required on the transmission lines that were typically protected
with communication independent scheme. This would provide faster
clearing time for the faults on the line to avoid system instability in
the system. Also, the studies have shown that there would be transient and
temporary O/V when only small unit is in-service when there is a single
line to ground fault (SLG) on the line. Such an overvoltage would be imposed on some distribution
customers and would significantly exceed power quality guidelines. To maintain the power quality of the system, the line was
required to remain connected to the system on SLG fault condition until
generation is disconnected.
Meliha B. Selak is a Specialist Engineer in Electrical Power Systems
with BC Hydro. She has an Electrical Engineering degree from the
University
of Sarajevo and has over 30 years of experience
in various aspects of power systems engineering including utility
protection, research & development, project management and
consulting on international projects. Prior to joining BC Hydro in
2000, she worked as a research engineer in the Power System Group at
the University of British Columbia
on Real-Time Power System Simulator in connection with EMTP. Her
technical activities include power system protection and control
applications, power system analysis, evaluations and interconnection
studies for the various plants connecting to the power system, as well
as development of the protection guidelines.
She is a registered professional engineer in the Province
of British Columbia and she is a senior member of
IEEE.
Meliha is a member of the IEEE Power &
Energy Society (PES) Governing Board and she is currently serving as
the Vice President for Chapters. Also, she is a corresponding member of
the IEEE Power System Relay Committee (PSRC).
She has written numerous technical reports and papers on the power
system subjects and she is also a paper reviewer. Meliha is a
distinguished lecturer of IEEE PES.
Meliha received numerous awards for her service to
British Columbia’s Power and Energy community through her leadership
role in IEEE Vancouver Section and IEEE PES Chapter Chair. She participated at WIE and
student branches events and she together with her women colleges from
PES Governing Board inspired Cheryl Warren who wrote the on-line book “Women in
Engineering – You Can Do It!”. Meliha is a recipient of the 2010 IEEE Canada Award in recognition of dedicated and
distinguished service to the profession”.
Please
help promote this event by displaying this this Promotional
Flier |
|
Essential skills for successful engineers —
24
October 2012
Speaker:
|
Dr Murray Milner FIPENZ
MIEEE MIET
Milner Consulting
Limited |
| Venue: |
Government Building Lecture
Theatre 1 (GBLT1),
Victoria University of Wellington,
Pipitea Campus,
15 Lambton Quay,
Wellington |
| Date:
|
Wednesday 24 October 2012
|
Time:
|
6:30 pm |
Cost:
|
Free
|
RSVP:
|
Please RSVP for catering
purposes by replying to nzc.gold@ieee.or |
|
You are invited to stay for
refreshments after the talk, and a chance to meet fellow young
engineers in the Wellington area.
Abstract
In this talk, Dr Milner
will use practical examples throughout his varied career to illustrate
the skills and attributes required by engineers today to develop their
career paths. Among the experiences he will outline are big project
engineering, the study of engineering with economics and public policy,
working with senior executives, people management, strategic influence
and his time in independent consulting. With reference to various
points in his career which has included stints in commercial and
postdoctoral research in the UK and USA as well as general management
as CTO of Telecom, Dr Milner will explain how a diverse skill set has
helped him and how it can help you.
About the speaker
Murray Milner is one of New
Zealand’s most prominent engineers in the ICT industry. He spent most
of his 40 years in the field in Telecom New Zealand, where he was the
Chief Technology Officer from 2000 to 2005. He now runs a busy
consulting practice in New Zealand and works extensively with central
government, local government and enterprises on ICT strategy, economics
and infrastructure development. He advises on the Connected Health
programme, chairs the National Health IT Board, is a director of each
of Crown Fibre Holdings and Enable Networks Limited (both partners in
the Ultra-Fast Broadband initiative), and is convenor for the New
Zealand IPv6 Task Force.
Dr Milner was presented
with the Chairman’s Award by the Telecommunications Users Association
of New Zealand (TUANZ) in 2005. He is a Fellow of IPENZ, chairs the
IEEE New Zealand Central Section, sits on the IET Wellington Local
Network Committee and is on the editorial panel for the
Telecommunications Journal of Australia
Please
help promote this event by displaying this this Promotional
Flier |
|
Joint IEEE/IET/IPENZ Breakfast Event 2012 —
18 October 2012
| Key Note Speaker: |
Kieran
Devine,
General Manager- System Operations,
Transpower NZ Ltd. |
| Title: |
An
Insight to the Secret Life of a System Operator |
| When: |
18
October 2012, 7:15am for 7:30am breakfast service, with formal
proceedings to commence around 8am |
| Where: |
Hotel
Intercontinental Wellington, 2 Grey St, Wellington 6011, Featherston
Room |
| Welcome: |
The organisers welcome all their members and guests
to enjoy this event |
Cost:
|
Members of any of the sponsoring organisations
free, Non members $30.00 |
Key Note Address Abstract:
The System Operator in an electric power system is the ultimate
monopoly. There
can be only one boss of the power system in Real Time, with a simple
objective to
"KEEP THE LIGHTS ON".
The System Operator uses a wide range of technology to assist decision
making, and
in certain defined areas, to make decisions. The technology covers a
diverse range
from the hard core tasks of optimising the generation to meet demand,
to providing
information for the difficult decision to return a faulted line to
service before a line
patrol has identified the cause, to avoid the risk of the next fault
causing blackout,
when public safety is paramount.
The presentation will give an overview and examples of the relevant
current
technology, a bit of speculation of where future technology is heading,
together with
how we select, train and support the control room operators to make one
and a half
million good decisions each year. |
Kieran is an electrical engineer with over 30 years
experience within the electrical industry both in New Zealand and
abroad.
He is currently General Manager, Systems Operations for Transpower New
Zealand Ltd. the owner/operator of New Zealand's high voltage
electricity transmission grid. |
| Please help promote this event by distributing this
Promotional Flier |
|
Post-Graduate Presentation Event — 7
September 2012
| Venue: |
Massey
University
AH.2, Manawatu Campus
Palmerston North |
| Date: |
Friday 7 September 2012 |
Time:
|
10:30 am - 5 pm |
As part of the IEEE Student Branch at Massey
University technical activities we are organizing a
day event to showcase engineering post-graduate research work in the NZ
IEEE Central region. The
event will provide post-graduate students who are pursuing their higher
degree studies in the areas of
engineering and technology in local universities to present their
research work and to share their
knowledge with other fellow-students and peers. The event will allow
networking between students
and IEEE members.
Each presentation will be time-limited to only 10 minutes with
approximately 2 minutes for
discussion and questions. Prizes for best presentations will be
awarded, with food and refreshments
available to all participants.
For a map
to the venue see this Promotional Flier |
|
2012 IEEE New Zealand Wireless
Workshop — 31
August 2012
| Venue: |
WF 303
(to be confirmed)
Auckland University of Technology (AUT University),
Wellesley Campus,
Auckland CBD
|
| Date: |
Friday 31 August 2012 |
Time:
|
9 am - 5 pm |
The IEEE New Zealand Wireless Workshop is an
annual event that brings together engineers, researchers,
industrialists and policy makers to discuss technologies and issues of
interest to the wireless community in New Zealand. The day consists of
a series of presentations from participants, with ample opportunity for
informal discussions and networking.
The 2012 IEEE New Zealand Wireless Workshop is to be held
9 am - 5 pm, Friday 31st August, 2012
WF 303 (to be confirmed)
Auckland University of Technology (AUT University), Wellesley Campus,
Auckland CBD
Registration: Free (and lunch is provided)
We are planning to have a keynote session in addition to both industry
and academic forums. If you would like to act as sponsor for, and/or
make a brief presentation (up to 15 minutes) at this year's Wireless
Workshop please email Dr Nurul Sarkar at nurul.sarkar@aut.ac.nz
Suitable topics for presentation include (but are not limited to):
ongoing research; emerging technologies; product and system
development; industrial experience and strategy; and spectrum policy.
The Wireless Workshop is intentionally informal and no written
abstracts are required, but these can be distributed to participants if
provided.
All are welcome to attend: there is no requirement to be an IEEE member
and you are encouraged to bring your colleagues.
As with previous years, the Workshop will be preceded by a meeting of
the NZ Wireless Research Network, 3-4pm Thursday 30 August, venue as
above. This meeting, which discusses future commercial and research
directions for the NZ Wireless Industry, also will be open to all
interested parties.
RSVP to nurul.sarkar@aut.ac.nz for catering purposes by Wednesday 15
August. Also, feel free to email nurul.sarkar@aut.ac.nz if you have any
questions; or wish to be removed from this email list or have your
details updated.
Workshop programme will be forwarded closer to the event.
|
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LTE Wireless Communication: Challenges and
Benefits to NZ — 16 August 2012
The IET, IEEE NZ Central
section and its Graduates of the Last Decade (GOLD) group invite
you to a presentation on LTE wireless communication by Joseph Wong,
Network Strategy and Planning Manager at Vodafone NZ
Topic:
|
LTE Wireless Communication: Challenges and Benefits
to NZ
|
Speaker:
|
Joseph Wong
Network Strategy and Planning Manager, Vodafone NZ |
| Venue: |
Spectrum
Theatre
Cnr Customhouse Quay & Johnston Street
Wellington
|
| Date: |
Thursday 16 August 2012 |
Time:
|
Refreshments from 12.00 with presentation at 12.30
|
Tony
will cover the benefits of the next generation 'Long Term Evolution'
(LTE) wireless communication standard over current 2G and 3G wireless
technologies, looking at user experiences both for NZ and as seen by
Vodafone in other countries. Special consideration will be made to
rural
NZ noting, in Germany, LTE has been used for fixed substitution;
something Vodafone believes is an excellent opportunity to extend the
Rural Broadband network with LTE in the 700 MHz band. Spectrum and
performance considerations will also be discussed.
Dr Joseph Wong completed a Bachelor of Engineering in 1996, a
Master of Engineering in 1998 and a Ph.D. in Telecommunications in 2006
at the University of Auckland. He started working as a RF consultant
for
Kordia two years before his Ph.D. graduation. He joined Vodafone in
2006
and has since taken on various roles. Most recently he is the Network
Strategy and Planning Manager and is responsible for leading various
strategic projects including RBI.
He is currently the Network Strategy and Planning Manager Vodafone NZ.
|
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Rapid Development of Digital Broadcast
Technologies — 18 July 2012
The event is being hosted
by the IET Wellington Network
|
“Rapid Development
of Digital Broadcast Technologies: Challenges and Opportunities”
Dr. Amal
Punchihewa, Massey University, Palmerston North
Wednesday, 18 July 2012 from
12:00 to 13:30
Spectrum Theatre, Crnr Customhouse Quay & Johnston St, Wellington
Broadcast technologies are being developed very rapidly. In television
broadcasting, second generation terrestrial, satellite and cable
technologies are already being deployed. Some countries have already
switched-off analogue services. While digital services provide many
benefits such as high quality visuals and sound, spectrum efficiency,
error correction capability, and easy storage, it also brings many
challenges to broadcasters, viewers, regulators and manufactures. This
presentation will highlight recent advances in digital television
technologies and its impact on stakeholders to the television
broadcasting.
Next generation television services such as IPTV-Internet protocol
based television will be introduced with its distinct characteristics
and challenges in assurance of service quality known as Quality of
Experience (QoE).
Amal holds a BEng (Hons), MEEng, Ph.D. He is a chartered professional
engineer and possesses over 26 years of academic and industry
experience. He is a Fellow of IET(UK), a Member of IEEE and
IPENZ. He is an International Professional Registration Adviser (IPRA)
for NZ and the secretary of the IEEE Instrumentation and Measurement
Society New Zealand Chapter. He is a senior consultant in broadcast
technologies and an expert of ITU.
(IPRA) for NZ and the secretary of the IEEE Instrumentation and
Measurement Society New Zealand Chapter. He is a senior consultant in
broadcast technologies and an expert of ITU.
Proceedings will commence with tea and coffee at 12:00, followed by the
presentation at 12:30. Non Members welcome.
For further information contact: jfoster@theiet.org
|
|
EEA Keynote Speakers — 18 June 2012
The event is being hosted
by the IET Wellington Network
Smart
Grids: A Customer's Perspective
EEA Keynote Speaker#1: Duncan
Botting, BA FEI, FRSA, MIET, MIEEE,
Monday 18th June, 2012 from 12.00 - 12.45
Standards
New Zealand, Radio NZ House, 155 The Terrace, Level 10
Given all the hype, cyber security scares and promises from
politicians, what are the real benefits to consumers of a Smart Grid?
Examples
from around the world will be used to plant some thought provoking
ideas on what Smart Grids may mean for consumers and explore ‘what
might this do for the industry and where could it take us over the next
40 years?’
This
lecture will present a different perspective from Duncan's Keynote
address at this year’s EEA Conference in Auckland.
Duncan is
Business Innovation and Growth Director at Parsons Brinckerhoff,
Executive Chairman of the Scottish European Green Energy Centre and
Managing Director at Global Smart Transformations Ltd based in
Scotland. His previous roles included Managing Director ITI Energy and
Head of Technology & Business Development at ABB. He has 30 years
experience covering the complete spectrum of technical and commercial
roles from apprentice to boardroom.
He is an
active member of the IET Energy Policy Panel, Vice-Chair of the
European Technology Platform for “SmartGrids” and the UK Government’s
Smart Grid Forum.
Renewable
Energy: The Case for Photovoltaics
EEA
Keynote Speaker #2: Professor Miroslav Begovic
Monday
18th June, 2012 from 12.45 - 1.30
Standards New Zealand, Radio NZ House, 155 The Terrace, Level 10
Miroslav
M. Begovic is Professor in the School of Electrical and Computer
Engineering and an affiliated faculty member of the Brook Byers
Institute for Sustainable Systems at Georgia Tech. He received a PhD
from Virginia Tech and MS and Dipl. Ing., all in electrical
engineering, from Belgrade University. Dr. Begovic’s research interests
are in monitoring, analysis, and control of power systems, as well as
development and applications of renewable and sustainable energy
systems. His research is concentrated on real-time monitoring systems
for control of power system dynamics, protective relaying, distribution
network operation, and distributed resources in energy systems.
For the
Centennial Olympic Games in 1996 in Atlanta, he designed with Professor
Ajeet Rohatgi a 340 kW photovoltaic system on the roof of Aquatic
Center at Georgia Tech, which at that time was the largest roof-mounted
PV system in the world. Professor Begovic
published over 100 publications and completed over $12 million of
research projects during his career at Georgia Tech.
He is
President-elect of the IEEEE PES has been a
member of their IEEE PES Power System Relaying Committee for almost 20
years and chaired its first working group on wide area protection and
emergency control, as well as a number of other working groups. Dr.
Begovic is Chair of the Electric Energy Group in the School of ECE at
Georgia Institute of Technology.
Proceedings
will commence with refreshments and conversation at 11:45, followed by
the presentations at 12:00.
RSVP
not required. Non Members welcome.
For further information contact: jfoster@theiet.org
|
|
Are Technology Assisted Homes Safer for the
Elderly? — 6 June 2012
The event is being hosted
by the IET Wellington Network
Speaker:
|
Professor
Subhas Mukhopadhyay,
Massey University, Palmerston North
|
| Venue: |
Lambton
3,
Terrace Conference Centre,
114 The Terrace.
|
| Topic: |
Are
Technology
Assisted
Homes
Safer
for the Elderly?
|
| Date: |
Wednesday 6 June 2012 |
Time:
|
Tea and coffee from 12.00 with presentation at 12.30
|
The
elderly population of the world is growing rapidly, increasing the need
for elderly care. In New Zealand, there are currently 510,000
people over the age of 65.
Quite often we are appalled and shocked by news headlines such as
“Elderly man lay dead for days in his home”. However, as a
society we value our rights to live independently and keep control of
our own lives. Surely, with the technology of today, there is a
better way to resolve this problem.
Subhas will present the design intricacies and implementation details
of a wireless sensor network based safe home monitoring system targeted
for the elderly people to provide a safe, sound and secured living
environment.
The lecture will cover the architecture of the sensor networks, sensor
design, communication protocol, optimum number of sensors and their
locations.
Subhas holds a B.E.E. (gold medalist), M.E.E., Ph.D. (India) and Doctor
of Engineering (Japan). He has over 21 years of teaching, industrial
and research experience. Currently he is working as a Professor
at Massey University, New Zealand. He has published 230 papers
and written two books. He is a Fellow of IET(UK), a Fellow of
IEEE(USA), an associate editor of IEEE Transactions on Instrumentation
and Measurements and IEEE Sensors journal. He is a Distinguished
Lecturer by IEEE Sensors Council
Non Members welcome.
For further information contact: jfoster@theiet.org
|
|
Software defined radio — 4 April 2012
Speaker:
|
Peter F
Driessen
|
| Venue: |
Laby Building Lecture Theatre
118
Kelburn Campus
Victoria
University
of
Wellington
Located around 11h on the campus
map.
|
| Topic: |
Software defined radio for teaching
telecommunications
|
| Date: |
Wednesday 4 April 2012 |
Time:
|
1:00 pm |
The first course in radio telecommunication
involves teaching ideas of baseband message signals, radio carrier
waves, modulation of the carrier wave with the message signal,
amplifying the signal for transmission, defining a link budget
for sending the message from A to B, and receiver design to recover the
message.
A software defined radio (SDR) implements many of these ideas in
software, ideally only the transmitter power amplifier, antennas
and receiver preamplifier are analog hardware. An ideal SDR does
the analog to digital signal conversion just before the power
amplifier, and just after the preamplifier. All message
processing and (de)modulation is done in software using digitized
signals. Radios and cellphones are becoming increasingly
software-defined. SDRs can also be used as general test equipment
such as signal generator and spectrum analyzer.
Teaching radio telecommunication with SDR allows students to experiment
with different system designs easily, and prepares them for work in
industry. In this talk, some principles of SDR are introduced,
followed by description of laboratory exercises. A live demo of
SDR in action is planned.
Peter F Driessen
Peter Driessen is Professor of Electrical and Computer Engineering at
the University of Victoria. He received his PhD from the University of
British Columbia, Canada.
He worked for 5 years in various companies in Vancouver Canada
designing modems for data communications. He then joined the
University of Victoria, Canada where he is now Professor in Electrical
and Computer Engineering, with cross appointments in Music and Computer
Science. He spent two years plus 8 summers at AT&T Bell
Laboratories, New Jersey USA working on wireless communications
systems. He was at Massey University Wellington as visiting
Professor of Multimedia Systems Engineering for 5 years until the
School closed in 2011.
Peter Driessen has extensive practical as well as theoretical
experience in radio, starting in Amateur Radio at the age of 16 and
continuing to this day with callsigns VE7AB and ZL2RV. He has
done many measurements of radio propagation and impulse responses and
published over 100 articles.
He was Editor of IEEE Personal Communications Magazine, IEEE Journal of
Selected Areas in Communications, and IEEE Transactions on Wireless
Communications, each for a 3 year term. He was papers co-chair
for the International Computer Music Conference held in Cuba. He was
elected Senior Member of IEEE.
|
|
Signal processing for Sound — 13, 14
February 2012
These two events are
being organized by the
IEEE New Zealand Central Section
Joint Chapter on Signal Processing, Communications and Information
Theory
Speaker:
|
Professor
Steve Elliott
Institute of Sound and
Vibration Research
University of Southampton,
Southampton SO17 1BJ, UK.
|
| Venue: |
Victoria
University
of
Wellington,
Cotton
Building,
CO
350
|
| Topic 1: |
FEEDBACK CONTROL OF VIBRATION IN AIRCRAFT AND IN
THE EAR |
| Date 1: |
Monday 13 Feb 2012 |
Time
1:
|
1:10 pm |
|
|
| Topic 2: |
PERSONAL AUDIO AND ACTIVE CONTROL OF SOUND IN THE
ENVIRONMENT |
| Date 2: |
Tuesday 14 Feb 2012 |
| Time 2: |
9:00 am |
----------------------------------------------------------------------
Abstract
1:
The low frequency sound and vibration inside aircraft is now
_attenuated_ using commercial active control systems. These typically
operate using many shakers acting on the structure to modify its
vibration and hence reduce excitation of the sound field.
As the structure becomes larger, the number of actuators and sensors
required for effective control rises significantly. Conventional, fully
coupled, control systems then become costly in terms of weight and
sensitivity to individual failures. An alternative strategy is to
distributing the control over multiple local controllers, which has been
shown to be effective in a number of cases. Recent work will be
presented on tuning these local control loops to maximise the power they
absorb from the structure, which may allow the mass production of
generic active control modules that include an actuator, sensor and
self-tuning controller.
The workings of the inner ear also provide a remarkable natural example
of distributed active vibration control, whose objective is to _enhance_
the motion within the cochlea. A simple model for this cochlear
amplifier, in which each of the outer hair cells act as local control
loops, will be described and its use illustrated in predicting the
otoacoustic emissions generated by the ear. These emissions are used
clinically to screen the hearing of young children and so it is
important to understand how they are generated within the cochlea.
----------------------------------------------------------------------
Abstract 2:
As well as being able to reproduce sound in one region of space, it
would be useful in many applications to be able to control the level of
reproduced sound in other spatial regions. This is motivated by issues
of privacy for the user and the need to reduce annoyance for other
people nearby. The techniques for implementing this kind of "personal
audio" using array of loudspeakers have much in common with systems for
the active control of sound, where the traditional objective has been
only to reduce the sound level in environments such as cars and
aircraft, for example.
Several practical examples of personal audio systems will be described,
including using an array of loudspeakers in headrests to reproduce
separate audio channels in adjacent seats, a system to reduce radiated
sound from hands-free mobile devices and zonal amplification of TV
audio. These systems often have a fundamental trade-off between
performance and array effort, where the latter affects both the
electrical power requirements of the array and its robustness to
variations in driver response. Signal processing strategies will be
described that allow a good compromise to be drawn between these
competing requirements.
----------------------------------------------------------------------
Presenter Biography:
Steve Elliott graduated with first class joint honours BSc in physics
and electronics from the University of London, in 1976, and received the
PhD degree from the University of Surrey in 1979 for a dissertation on
musical acoustics.
After a short period as a Research Fellow at the ISVR and as a temporary
Lecturer at the University of Surrey, he was appointed Lecturer at the
Institute of Sound and Vibration Research (ISVR), University of
Southampton, in 1982. He was made Senior Lecturer in 1988,
Professor in
1994, and served as Director of the ISVR from 2005 to 2010. His
research interests have been mostly concerned with the connections
between the physical world, signal processing and control, mainly in
relation the active control of sound using adaptive filters and the
active feedback control of vibration. This work has resulted in
the
practical demonstration of active control in propeller aircraft, cars
and helicopters. His current research interests include modular
systems
for active feedback control and modelling the active processes within
the cochlear.
Professor Elliott has published over 200 papers in refereed journals and
400 conference papers and is co-author of Active Control of Sound (with
P A Nelson 1992), Active Control of Vibration (with C R Fuller and P A
Nelson 1996) and author of Signal Processing for Active Control (2001).
He is a Fellow of the Acoustical Society of America, the IET and the IOA
and a senior member of the IEEE. He was jointly awarded the
Tyndall
Medal from the Institute of Acoustics in 1992 and the Kenneth Harris
James Prize from the Institution of Mechanical Engineers in 2000.
He was made a Fellow of the Royal Academy of Engineering in 2009
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