Sökning: "feedforward loop"

Visar resultat 1 - 5 av 19 avhandlingar innehållade orden feedforward loop.

  1. 1. On Modeling and Control of Flexible Manipulators

    Författare :Stig Moberg; Svante Gunnarsson; Anders Robertsson; Linköpings universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; System identification; multivariable systems; differential-algebraic equations; robots; manipulators; flexible structures; robustness; position control; nonlinear systems; closed-loop identification; frequency-response methods; industrial robots; robotics; control; feedforward; flexible arms; Automatic control; Reglerteknik;

    Sammanfattning : Industrial robot manipulators are general-purpose machines used for industrial automation in order to increase productivity, flexibility, and quality. Other reasons for using industrial robots are cost saving, and elimination of heavy and health-hazardous work. LÄS MER

  3. 2. Wideband Sigma-Delta Modulators

    Författare :Xiaolong Yuan; Svante Signell; Jakob Wikner; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; sigma-delta modulator; feedforward; reconfigurable; quadrature bandpass filtering; Electronics; Elektronik;

    Sammanfattning : Sigma-delta modulators (SDM) have come up as an attractive candidatefor analog-to-digital conversion in single chip front ends thanks to the continuousimproving performance. The major disadvantage is the limited bandwidthdue to the need of oversampling. LÄS MER

  4. 3. Genetic mechanisms behind cell specification in the Drosophila CNS

    Författare :Magnus Baumgardt; Stefan Thor; Angela Giangrande; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Drosophila melanogaster; nervous system development; cell specification; stem cells; cell proliferation; combinatorial coding; feedforward loop; Developmental biology; Utvecklingsbiologi;

    Sammanfattning : The human central nervous system (CNS) contains a daunting number of cells and tremendous cellular diversity. A fundamental challenge of developmental neurobiology is to address the questions of how so many different types of neurons and glia can be generated at the precise time and place, making precisely the right connections. LÄS MER

  5. 4. Fixed-Feedback SISO Adaptive Control

    Författare :Magnus Nilsson; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Two-Degrees-of-Freedom Control; Feedforward Control; Adaptive Control;

    Sammanfattning : Adaptive control is an attractive method to solve control problemssince the tedious task of identifying process behavior to find asuitable design for the controller is taken care of by the adaptivecontroller itself. It may be difficult, however, to guaranteerobustness (in the sense of desired disturbance attenuation andstability margins) for traditional adaptive schemes since theircorresponding loop gain is time varying. LÄS MER

  7. 5. Coordinated Control of HVDC Links in Transmission Systems

    Författare :Robert Eriksson; Lennart Söder; Kjetil Uhlen; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; coordinated control; dynamic security; exact-feedback linearization; feedforward control; HVDC poser modulation; Electric power engineering; Elkraftteknik;

    Sammanfattning : Dynamic security limits the power transfer capacity between regions and therefore has an economic impact. The power modulation control of high-voltage direct current (HVDC) links can improve the dynamic security of the power system. LÄS MER