Zimbabwe troops 'eat elephants'

A Zimbabwean wildlife campaigner tells the BBC that soldiers are being given elephant meat to eat, as the economic crisis deepens.

news.bbc.co.uk

US vows 'huge' marine protection

The US is to establish "the largest area of protected sea in the world", banning fishing and mining, around its Pacific islands.

news.bbc.co.uk

China alert over bird flu death

Chinese authorities shut down and clean poultry markets in Hebei province, after the first human death in nearly a year.

news.bbc.co.uk

Eat it or lose it - why centuries of crop diversity are at risk

Centuries of crop diversity are at risk of being lost forever as farmers turn to just a few modern, high yielding varieties.

news.bbc.co.uk

Beagle hunter

On a mission to find the most famous ship of science

news.bbc.co.uk

Mummy of female pharaoh uncovered

Egyptologists find remains of a mummy thought to belong to a queen who ruled 4,300 years ago, Egypt's antiquities chief announced.

news.bbc.co.uk

Baby Jupiter's huge weight gain

The planet Jupiter must have gained mass fast during its infancy, according to astronomers.

news.bbc.co.uk

Mosquitoes make sweet love music

Sexy songs sung by mosquitoes in courtship could be key to curbing the spread of dengue fever, say scientists.

news.bbc.co.uk

Earth Watch

Why it is hard to predict sudden environmental crises

news.bbc.co.uk

Venomous mammal caught on camera

Rare footage of one of the world's most strange and elusive mammals is captured by scientists.

news.bbc.co.uk

Canadians claim South Pole record

A trio of Canadians claim a new record for the fastest trek across Antarctica to the South Pole.

news.bbc.co.uk

Heat may spark world food crisis

Half the world's population could face food crisis by 2100 as soaring temperatures cripple staple crops, scientists warn.

news.bbc.co.uk

Tech fair offers greener vision

Analysts at the Consumer Electronics Show say green credentials of tech products will become critical to success.

news.bbc.co.uk

Poetry or science?

Is romantic love just a chemical cocktail?

news.bbc.co.uk

'Wolfman' returns

Explorer Jim McNeill tracks down Arctic wolves

news.bbc.co.uk

Black holes 'preceded galaxies'

Astronomers believe they have solved a cosmic chicken-and-egg question: what came first - black holes or galaxies?

news.bbc.co.uk

Everest trip helps critically ill

Blood oxygen levels recorded on a trip by medics to Everest could help the treatment of critically ill patients.

news.bbc.co.uk

Feilden's blog

Ground-breaking new technique in stem cell science

news.bbc.co.uk

Our writers talk back

Some of the previous contributors to the Green Room respond to readers' questions and comments.

news.bbc.co.uk

Animal matters

Scotland's debate over tests on primates

news.bbc.co.uk

Panda bites his third tourist in two years at Beijing zoo

A panda at Beijing zoo bites a man for the third time in two years.

news.bbc.co.uk

First flight of algae-fuelled jet

Continental Airlines is the latest to test fly a jet biofuel, this time with a product derived partially from algae.

news.bbc.co.uk

Body repair 'could be ramped up'

A combination of drugs could trick the body into sending its repair mechanisms into overdrive, say scientists.

news.bbc.co.uk

A deep-sea fish caught in the Pacific has mirrors for eyes

A deep-sea fish caught in the Pacific has eyes which use mirrors as well as lenses, scientists discover.

news.bbc.co.uk

Holes give edge to new armour

Scientists from the UK Ministry of Defence (MoD) have devised ultra-hard vehicle armour to protect military personnel.

news.bbc.co.uk

 Science > Math > Applications > Control Theory

 Last searches:term life insurance onlinemortgage quoteanseswhite pagesflightsרכבת ישראל

Science > Math > Applications > Control Theory

Control Theory:

Adjusting PID Gains

Describes the adjustment procedure of PID gains. Includes transient plots.

http://www.ctc-control.com/customer/elearning/servotut/adjus.asp

Graand

Free Classified Ads Portal

www.graand.com

Bode and Nyquist Using Excel

Explains how spreadsheets can be used to obtain Bode and Nyquist Diagrams, from the University of Michigan, USA. Includes several illustrated examples.

http://www.chem.mtu.edu/~tbco/cm416/freqexcel.html

Brief History of Feedback Control

Comprehensive article about the historical aspects of the theory and its development. Includes applications and references.

http://www.theorem.net/theorem/lewis1.html

Classical Feedback Control with Matlab

Scientific article on the closed loop control. Addresses system design, filtering, control optimization, stability, Bode and Nyquist diagrams.

http://www.luriecontrol.com/CFC/ch4/C4.htm

Control Theory

Describes the basics of PID algorithms. Addresses proportional, integral and derivative components and their effects.

http://www.flightgear.org/Docs/XMLAutopilot/node2.html

Control Theory and Engineering Links from Theorem.Net

List of resources, applets and publications.

http://www.theorem.net/control.html

Control Tutorials for Matlab: PID Tutorial

Introduction to the theory with focus on PID control. Includes background and examples with source code.

http://www.engin.umich.edu/group/ctm/PID/PID.html

Design and Analysis of Control Systems Research Laboratory

Department of the University of Massachusetts, USA, concerned with control research. Includes publications, research topics and contact information.

http://www.ecs.umass.edu/mie/labs/dacs/

Digital Control Tutorial

Explains the digital control theory and its applications in microprocessor-based controllers. Addresses z-transformation, stability and transient response.

http://www.engin.umich.edu/group/ctm/digital/digital.html

FAQ on PID Controller Tuning

Introduction to PID feedback controller. Includes mathematical background, tuning aspects, implementations and tutorials.

http://www.tcnj.edu/~rgraham/PID-tuning.html

Feedback and Temperature Control

Scientific article about temperature controller. Addresses controller types, algorithms, transient responses and simulations.

http://newton.ex.ac.uk/teaching/CDHW/Feedback/

Model Order Reduction

Topic connected to dynamical systems in application to reducing complexity of a dynamical control system. Includes introduction to this field, documents and codes.

http://web.mit.edu/mor/

The Nyquist Criterion Using Bode Plots

Explains the controller stability criteria based on the Nyquist frequency response. Includes mathematical formulations and diagrams.

http://virtual.cvut.cz/dynlabmodules/syscontrol/node45.html

Nyquist Stability

Explains the basics of the Nyquist controller stability criteria. Includes diagrams and Bode plots.

http://www.facstaff.bucknell.edu/mastascu/eControlHTML/Freq/Nyquist3.html

PID Controller

Description of the PID control loop. Includes transient diagrams and source codes.

http://www.ecircuitcenter.com/Circuits/pid1/pid1.htm

PID Without a PhD

Overview of the PID control theory in plain text. Addresses mathematical background, tuning and transient response.

http://www.embedded.com/2000/0010/0010feat3.htm

Russian Systems and Control Archive

Information about Russian specialists, groups, institutes, foundations, conferences, journals and books related to systems and control. [English, Russian]

http://www.rusycon.ru/english/rusycon.html

Signals, Systems and Control Demonstrations

Resource of applets and interactive lectures dedicated the control theory from the Johns Hopkins University.

http://www.jhu.edu/~signals/

System-Specific PI Control Theory for Fluid and Motion Systems

Scientific summary about analytical PI and PID control tuning methods.

http://www.control-innovation.com

Tuning a PID Controller

Describes the different types of controller. Addresses efficiency and stability aspects.

http://www.newportus.com/Products/Techncal/techncal.htm

Web-Based Control System Analysis and Design

Applets to generate Bode diagrams, Nichols chart and Nyquist diagrams.

http://www.softintegration.com/chhtml/toolkit/control/FDAnaly.html

Wikipedia: Control Engineering

Definition of control engineering. Includes modelling approaches and application fields.

http://en.wikipedia.org/wiki/Control_engineering

Wikipedia: Control Theory

Comprehensive overview and glossary about the theory. Includes definitions, mathematical aspects, historical background and examples.

http://en.wikipedia.org/wiki/Control_theory