Negative feedback

View this topic in
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

Back to Top

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

Back to Top

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


More Periodicals


Xplore Articles related to Negative feedback

Back to Top

Theory and design of waveform purer

S. Li; Z. Li; Z. Zhang CPEM 2010, 2010

To reduce harmonics in the AC voltage signal, a precise bound-pass RC filter named `waveform purer' is designed with a double-T network in the negative feedback loop. This filter keeps fundamental frequency unvaried, in both phase and amplitude, but greatly reducing harmonics. Related principles are discussed, including the `bridge balance principle' of double-T network and the `three time constants principle'. ...


Negative electrical feedback grinrod external coupled cavity semiconductor laser

Zhang Jingping; Li Ling; Ye Peida; Tao Shangping Computer and Communication Systems, 1990. IEEE TENCON'90., 1990 IEEE Region 10 Conference on, 1990

Presents a new configuration of a negative frequency feedback semiconductor laser. Instead of a Fabry-Perot etalon, an optical fiber ring resonator is used as the FM noise detector. All the components are connected by optical fibers. The spectral linewidth of the 1.3-μm graded-index-rod external coupled cavity (GRECC) InGaAsP BH laser diode is narrowed by using the negative electrical feedback technique. ...


Stability Robustness of a Feedback Interconnection of Systems With Negative Imaginary Frequency Response

Alexander Lanzon; Ian R. Petersen IEEE Transactions on Automatic Control, 2008

A necessary and sufficient condition, expressed simply as the dc loop gain (i.e., the loop gain at zero frequency) being less than unity, is given in this note to guarantee the internal stability of a feedback interconnection of linear time-invariant (LTI) multiple-input multiple-output systems with negative imaginary frequency response. Systems with negative imaginary frequency response arise, for example, when considering ...


Analytical expressions of transient thermal response of self-heating semiconductor devices

Y. Zhu; J. K. Twynam; M. Yagura; M. Hasegawa; Y. Eguchi; A. Yamada; E. Suematsu; K. Sakuno; H. Sato; N. Hashizurne Microwave Symposium Digest, 1998 IEEE MTT-S International, 1998

Analytical expressions of the transient thermal response of self-heating devices have been derived based on a feedback amplifier circuit model yielding accurate methods to extract the thermal time constant in both the time and frequency domains. The transient thermal responses of GaInP/GaAs HBT were measured and explained using the expressions derived.


Indirect negative feedback bipolar LNA

Adiseno; M. Ismail; H. K. Olsson Electronics, Circuits and Systems, 1999. Proceedings of ICECS '99. The 6th IEEE International Conference on, 1999

In this paper, an indirect negative feedback (INF) technique is adopted in the design of a low-noise amplifier (LNA) suitable for low-voltage wireless communication applications. It is shown in this paper that INF is suitable to achieve an acceptable performance of LNA's in low-voltage operation. The output stages of the LNA can be placed near the ground rail and directly ...


More Xplore Articles

Educational Resources on Negative feedback

Back to Top

eLearning

Theory and design of waveform purer

S. Li; Z. Li; Z. Zhang CPEM 2010, 2010

To reduce harmonics in the AC voltage signal, a precise bound-pass RC filter named `waveform purer' is designed with a double-T network in the negative feedback loop. This filter keeps fundamental frequency unvaried, in both phase and amplitude, but greatly reducing harmonics. Related principles are discussed, including the `bridge balance principle' of double-T network and the `three time constants principle'. ...


Negative electrical feedback grinrod external coupled cavity semiconductor laser

Zhang Jingping; Li Ling; Ye Peida; Tao Shangping Computer and Communication Systems, 1990. IEEE TENCON'90., 1990 IEEE Region 10 Conference on, 1990

Presents a new configuration of a negative frequency feedback semiconductor laser. Instead of a Fabry-Perot etalon, an optical fiber ring resonator is used as the FM noise detector. All the components are connected by optical fibers. The spectral linewidth of the 1.3-μm graded-index-rod external coupled cavity (GRECC) InGaAsP BH laser diode is narrowed by using the negative electrical feedback technique. ...


Stability Robustness of a Feedback Interconnection of Systems With Negative Imaginary Frequency Response

Alexander Lanzon; Ian R. Petersen IEEE Transactions on Automatic Control, 2008

A necessary and sufficient condition, expressed simply as the dc loop gain (i.e., the loop gain at zero frequency) being less than unity, is given in this note to guarantee the internal stability of a feedback interconnection of linear time-invariant (LTI) multiple-input multiple-output systems with negative imaginary frequency response. Systems with negative imaginary frequency response arise, for example, when considering ...


Analytical expressions of transient thermal response of self-heating semiconductor devices

Y. Zhu; J. K. Twynam; M. Yagura; M. Hasegawa; Y. Eguchi; A. Yamada; E. Suematsu; K. Sakuno; H. Sato; N. Hashizurne Microwave Symposium Digest, 1998 IEEE MTT-S International, 1998

Analytical expressions of the transient thermal response of self-heating devices have been derived based on a feedback amplifier circuit model yielding accurate methods to extract the thermal time constant in both the time and frequency domains. The transient thermal responses of GaInP/GaAs HBT were measured and explained using the expressions derived.


Indirect negative feedback bipolar LNA

Adiseno; M. Ismail; H. K. Olsson Electronics, Circuits and Systems, 1999. Proceedings of ICECS '99. The 6th IEEE International Conference on, 1999

In this paper, an indirect negative feedback (INF) technique is adopted in the design of a low-noise amplifier (LNA) suitable for low-voltage wireless communication applications. It is shown in this paper that INF is suitable to achieve an acceptable performance of LNA's in low-voltage operation. The output stages of the LNA can be placed near the ground rail and directly ...


More eLearning Resources

IEEE.tv Videos

No IEEE.tv Videos are currently tagged "Negative feedback"

IEEE-USA E-Books

  • 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

  • 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.

  • 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

  • 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

  • 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



Standards related to Negative feedback

Back to Top

No standards are currently tagged "Negative feedback"


Jobs related to Negative feedback

Back to Top