Negative feedback

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Negative feedback occurs when the output of a system acts to oppose changes to the input of the system, with the result that the changes are attenuated. (Wikipedia.org)






Conferences related to Negative feedback

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2014 IEEE International Symposium on Circuits and Systems (ISCAS)

The IEEE International Symposium on Circuits and Systems (ISCAS) is the flagship conference of the IEEE Circuits and Systems Society and the world’s premier networking forum in the highly active fields of theory, design and implementation of circuits and systems.ISCAS 2014 will have a special focus on nano/bio circuits and systems applied to enhancing living and lifestyles, and seeks to address multidisciplinary challenges in healthcare and well-being, the environment and climate change.

  • 2013 IEEE International Symposium on Circuits and Systems (ISCAS)

    The Symposium will focus on circuits and systems employing nanodevices (both extremely scaled CMOS and non-CMOS devices) and circuit fabrics (mixture of standard CMOS and evolving nano-structure elements) and their implementation cost, switching speed, energy efficiency, and reliability. The ISCAS 2010 will include oral and poster sessions; tutorials given by experts in state-of-the-art topics; and special sessions, with the aim of complementing the regular program with topics of particular interest to the community that cut across and beyond disciplines traditionally represented at ISCAS.

  • 2012 IEEE International Symposium on Circuits and Systems - ISCAS 2012

    2012 International Symposium on Circuits and Systems (ISCAS 2012) aims at providing the world's premier forum of leading researchers in circuits and systems areas from academia and industries, especially focusing on Convergence of BINET (BioInfoNanoEnviro Tech.) which represents IT, NT and ET and leading Human Life Revolutions. Prospective authors are invited to submit papers of their original works emphasizing contributions beyond the present state of the art. We also welcome proposals on special tuto

  • 2011 IEEE International Symposium on Circuits and Systems (ISCAS)

    The IEEE International Symposium on Circuits and Systems (ISCAS) is the world's premier networking forum of leading researchers in the highly active fields of theory, design and implementation of circuits and systems.

  • 2010 IEEE International Symposium on Circuits and Systems - ISCAS 2010

    ISCAS is a unique conference dealing with circuits and systems. It's the yearly "rendez-vous" of leading researchers, coming both from academia and industry, in the highly active fields of theory, design and implementation of circuits and systems. The Symposium will focus on circuits and systems for high quality life and consumer technologies, including mobile communications, advanced multimedia systems, sensor networks and Nano-Bio Circuit Fabrics and Systems.

  • 2009 IEEE International Symposium on Circuits and Systems - ISCAS 2009

    Analog Signal Processing, Biomedical Circuits and Systems, Blind Signal Processing, Cellular Neural Networks and Array Computing, Circuits and Systems for Communications, Computer-Aided Network Design, Digital Signal Processing, Life-Science Systems and Applications, Multimedia Systems and Applications, Nanoelectronics and Gigascale Systems, Neural Systems and Applications, Nonlinear Circuits and Applications, Power Systems and Power Electronic Circuits, Sensory Systems, Visual Signal Processing and Communi


2013 26th International Conference on VLSI Design: concurrently with the 12th International Conference on Embedded Systems

The conference is a forum for researchers and designers to present and discuss various aspects of VLSI design, electronic design automation (EDA), embedded systems, and enabling technologies. It covers the entire spectrum of activities in the two vital areas of very large scale integration (VLSI) and embedded systems, which underpin the semiconductor industry.


2012 IEEE 27th Convention of Electrical & Electronics Engineers in Israel (IEEEI 2012)

All areas of Computers, Electrical and Electronics Engineering.


2010 Third International Conference on Education Technology and Training (ETT)

2010 Third International Conference on Education Technology and Training (ETT 2010), ETT 2010, is focused on basic/applied research results in the fields of Education and Training.The purpose of the conference is to bring together researchers and developers from academia, industry, and government to advance the science, engineering, and technology in Education Technology and Training. The program will feature keynote presentations by prominent researchers in the field. The best contributed paper will be giv

  • 2009 International Conference on Education Technology and Training (ETT)

    ETT is an annual International Conference on Education Technology and Training. The purpose of the conference is to bring together researchers and developers from academia, industry, and government to advance the science, engineering, and technology in Education Technology and Training. ETT was started in 2008. The previous conferences were held in Shanghai, China (2008), Sanya, China (2009), Hong Kong (2010)



Periodicals related to Negative feedback

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Image Processing, IEEE Transactions on

Signal-processing aspects of image processing, imaging systems, and image scanning, display, and printing. Includes theory, algorithms, and architectures for image coding, filtering, enhancement, restoration, segmentation, and motion estimation; image formation in tomography, radar, sonar, geophysics, astronomy, microscopy, and crystallography; image scanning, digital half-toning and display, andcolor reproduction.


Knowledge and Data Engineering, IEEE Transactions on

Artificial intelligence techniques, including speech, voice, graphics, images, and documents; knowledge and data engineering tools and techniques; parallel and distributed processing; real-time distributed processing; system architectures, integration, and modeling; database design, modeling, and management; query design, and implementation languages; distributed database control; statistical databases; algorithms for data and knowledge management; performance evaluation of algorithms and systems; data communications aspects; system ...


Microwave Theory and Techniques, IEEE Transactions on

Microwave theory, techniques, and applications as they relate to components, devices, circuits, and systems involving the generation, transmission, and detection of microwaves.


Proceedings of the IEEE

The most highly-cited general interest journal in electrical engineering and computer science, the Proceedings is the best way to stay informed on an exemplary range of topics. This journal also holds the distinction of having the longest useful archival life of any EE or computer related journal in the world! Since 1913, the Proceedings of the IEEE has been the ...


Quantum Electronics, IEEE Journal of

Generation, amplification, modulation, detection, waveguiding, or techniques and effects that can affect the propagation characteristics of coherent electromagnetic radiation having submillimeter and shorter wavelengths


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Xplore Articles related to Negative feedback

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A precision control circuit for variable-gain amplifiers

A. A. Ciubotaru IEEE Transactions on Circuits and Systems I: Fundamental Theory and Applications, 1996

The author describes a circuit that precisely controls the gain of one or more single-ended amplifiers by means of a corresponding number of Gilbert quads. The circuit employs a configuration consisting of a differential pair with two negative feedback loops and is used in conjunction with a precision potentiometer to generate a DC gain-control voltage as a function of its ...


Collective Goal Orientation and Justice Climate on Team Learning

Jin Yanghua 2008 International Conference on Computer Science and Software Engineering, 2008

With the popularity of teamwork, knowledge embedded in team becomes an important competitive advantage of many organizations. This paper tested the influence of team goal orientation and justice climate on team learning behavior. Results demonstrate that collective learning goal orientation and justice climate are effective predicators of team learning. Collective learning goal orientation affects teampsilas motivation to learn, team justice ...


Development of current-scalable emitter turn-off (ETO) thyristor module

A. Schmit; B. Chen; B. Zhang; A. Q. Huang Twentieth Annual IEEE Applied Power Electronics Conference and Exposition, 2005. APEC 2005., 2005

This paper highlights the development and experimental demonstration of an ETO module based on planar GTO technology that is well-suited to be scaled for a multitude of current requirements, with continuous current ratings from 100 A, and voltages up to 6.5 kV. Different from the previous press-pack ETO design, the new design employs an industry standard module design widely used ...


Generalized synthesis and applications of zero-impedance converter and its dual

N. A. Losic; L. D. Varga; Z. D. Popovic IEEE Transactions on Circuits and Systems I: Fundamental Theory and Applications, 1999

We present a synthesis method for converting to zero a nonzero impedance or admittance. The former case is called a zero-impedance converter (ZIC). Its dual is the latter case, called the zero-admittance converter (ZAC). The ZIC comprises a current positive-feedback loop within a voltage negative-feedback loop. The ZAC comprises a voltage positive-feedback loop within a current negative-feedback loop. Exact expressions ...


A transformation method for equivalent infinite-gain op amp to unity-gain CCII networks

S. Celma; P. A. Martinez; J. Sabadell IEEE Transactions on Circuits and Systems I: Fundamental Theory and Applications, 1996

A method to obtain equivalent networks is proposed. This permits one to synthesize filters with unity-gain CCII± from well-known single infinite-gain op amp configurations. Current transmittance filters with high output impedance and voltage transmittance filters with high input impedance are obtained. These circuits have the same passive sensitivities as their op amp counterparts. So, many particular cases proposed in the ...


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Educational Resources on Negative feedback

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eLearning

A precision control circuit for variable-gain amplifiers

A. A. Ciubotaru IEEE Transactions on Circuits and Systems I: Fundamental Theory and Applications, 1996

The author describes a circuit that precisely controls the gain of one or more single-ended amplifiers by means of a corresponding number of Gilbert quads. The circuit employs a configuration consisting of a differential pair with two negative feedback loops and is used in conjunction with a precision potentiometer to generate a DC gain-control voltage as a function of its ...


Collective Goal Orientation and Justice Climate on Team Learning

Jin Yanghua 2008 International Conference on Computer Science and Software Engineering, 2008

With the popularity of teamwork, knowledge embedded in team becomes an important competitive advantage of many organizations. This paper tested the influence of team goal orientation and justice climate on team learning behavior. Results demonstrate that collective learning goal orientation and justice climate are effective predicators of team learning. Collective learning goal orientation affects teampsilas motivation to learn, team justice ...


Development of current-scalable emitter turn-off (ETO) thyristor module

A. Schmit; B. Chen; B. Zhang; A. Q. Huang Twentieth Annual IEEE Applied Power Electronics Conference and Exposition, 2005. APEC 2005., 2005

This paper highlights the development and experimental demonstration of an ETO module based on planar GTO technology that is well-suited to be scaled for a multitude of current requirements, with continuous current ratings from 100 A, and voltages up to 6.5 kV. Different from the previous press-pack ETO design, the new design employs an industry standard module design widely used ...


Generalized synthesis and applications of zero-impedance converter and its dual

N. A. Losic; L. D. Varga; Z. D. Popovic IEEE Transactions on Circuits and Systems I: Fundamental Theory and Applications, 1999

We present a synthesis method for converting to zero a nonzero impedance or admittance. The former case is called a zero-impedance converter (ZIC). Its dual is the latter case, called the zero-admittance converter (ZAC). The ZIC comprises a current positive-feedback loop within a voltage negative-feedback loop. The ZAC comprises a voltage positive-feedback loop within a current negative-feedback loop. Exact expressions ...


A transformation method for equivalent infinite-gain op amp to unity-gain CCII networks

S. Celma; P. A. Martinez; J. Sabadell IEEE Transactions on Circuits and Systems I: Fundamental Theory and Applications, 1996

A method to obtain equivalent networks is proposed. This permits one to synthesize filters with unity-gain CCII± from well-known single infinite-gain op amp configurations. Current transmittance filters with high output impedance and voltage transmittance filters with high input impedance are obtained. These circuits have the same passive sensitivities as their op amp counterparts. So, many particular cases proposed in the ...


More eLearning Resources

IEEE-USA E-Books

  • Stochastic Modeling of Intracellular Kinetics

    This chapter contains section titled: 8.1 Chapter Overview, 8.2 Basic Models for Stochastic Kinetics, 8.3 Stochastic Gene Expression, 8.4 Fluctuation- Dissipation Approximations, 8.5 Fluctuations near Critical Points, 8.6 Negative Feedback of Replication Control, 8.7 Noise Induced Transitions, Acknowledgements, Notes

  • Interconnected Systems and Feedback

    This chapter contains sections titled: Introduction, Elementary System Interconnections; Effects of Loading, Simple Feedback Loops, Examples of the Effects of Negative Feedback, Summary, Exercises for Chapter 5, Problems for Chapter 5

  • PhaseLock Loops

    This chapter contains sections titled: Introduction PLL Design Background PLL Applications PLL Basics Loop Design Principles Linear Analysis of the PLL Locking a Phase-Lock Loop Loop Types Negative Feedback in a PLL PLL Design Equations Phase Detector Types Design Examples Conclusions Problems References

  • No title

    There are five different types of eye movements: saccades, smooth pursuit, vestibular ocular eye movements, optokinetic eye movements, and vergence eye movements. The purpose of this book is focused primarily on mathematical models of the horizontal saccadic eye movement system and the smooth pursuit system, rather than on how visual information is processed. A saccade is a fast eye movement used to acquire a target by placing the image of the target on the fovea. Smooth pursuit is a slow eye movement used to track a target as it moves by keeping the target on the fovea. The vestibular ocular movement is used to keep the eyes on a target during brief head movements. The optokinetic eye movement is a combination of saccadic and slow eye movements that keeps a full-field image stable on the retina during sustained head rotation. Each of these movements is a conjugate eye movement, that is, movements of both eyes together driven by a common neural source. A vergence movement is a non-con ugate eye movement allowing the eyes to track targets as they come closer or farther away. In this book, early models of saccades and smooth pursuit are presented. The smooth pursuit system allows tracking of a slow moving target to maintain its position on the fovea. Models of the smooth pursuit have been developed using systems control theory, all involving a negative feedback control system that includes a time delay, controller and plant in the forward loop, with unity feedback. The oculomotor plant and saccade generator are the basic elements of the saccadic system. The oculomotor plant consists of three muscle pairs and the eyeball. A number of oculomotor plant models are described here beginning with the Westheimer model published in 1954, and up through our 1995 model involving a 4$^{th}$ order oculomotor plant model. The work presented here is not an exhaustive coverage of the field, but focused on the interests of the author. In Part II, a state-of-art model of the saccade s stem is presented, including a neural network that controls the system. Table of Contents: Introduction / Smooth Pursuit Models / Early Models of the Horizontal Saccadic Eye Movement System / Velocity and Acceleration Estimation / 1995 Linear Homeomorphic Saccadic Eye Movement Model

  • Optimization in Physiological Control

    This chapter contains sections titled: Optimization in Systems with Negative Feedback Single-Parameter Optimization: Control of Respiratory Frequency Constrained Optimization: Airflow Pattern Regulation Constrained Optimization: Control of Aortic Flow Pulse Adaptive Control of Physiological Variables This chapter contains sections titled: Bibliography Problems

  • Practical Integrated CurrentConveyors

    This part contains sections titled: Introduction The current-mode/voltage-mode dilemma First generation current-conveyors Second generation current-conveyors Input bias-current scaling Local negative feedback A closed-loop current-conveyor A general purpose 'dual' current-conveyor Conclusions This part contains sections titled: References

  • Introduction to Modulators: Basic Concepts and Fundamentals

    This chapter is conceived as an introduction to CMOS Sigma-Delta () analog-to- digital converters (ADCs). Their operation principle consists in combining oversampling, quantization error processing, and negative feedback for improving the effective resolution of a coarse quantizer. Before presenting practical topologies for the implementation of modulation, the large variety of the existing realizations is briefly classified according to the type of modulator architecture (single loops or cascades), the circuit techniques employed (discrete time (DT) or continuous-time (CT)), and the nature of the signals being converted (low pass (LP) or band pass (BP)). Starting from the case of DT, LP, single-bit modulators, the implications of these different alternatives are then presented in an incremental way.



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