Sökning: "Active vibration control"

Visar resultat 16 - 20 av 36 avhandlingar innehållade orden Active vibration control.

  1. 16. Theoretical and experimental study of tooling systems : passive control of machining vibration

    Författare :Lorenzo Daghini; Cornel Mihai Nicolescu; Tomas Beno; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Industrial engineering and economy; Industriell teknik och ekonomi;

    Sammanfattning : Vibration control has been and still remains a subject of primary importance in modern manufacturing industry. To be able to remove high volumes of material in shorter time as well as to be able to get the right quality of the parts at the first time are goals that many shops would like to achieve. LÄS MER

  3. 17. Analysis of Structural Dynamic Properties and Active Vibration Control Concerning Machine Tools and a Turbine Application

    Författare :Henrik Åkesson; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Active Vibration Control; Structural dynamics; Nonlinearities; Turning; Milling;

    Sammanfattning : Vibration in metal cutting is a common problem in the manufacturing industry, especially when long and slender tool holders or boring bars are involved in the manufacturing process. Vibration has a detrimental effect on machining. In particular the surface finish is likely to suffer, but tool life is also most likely to be reduced. LÄS MER

  4. 18. On external model controller of vibrations

    Författare :Michael Bask; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Reglerteknik; Control Engineering;

    Sammanfattning : A promising way to increase the suppression of vibration in mechanical systems is to apply active damping instead of passive damping, which is most widespread today. An active damper system consists of an actuator, a controller and at least one sensor, usually an accelerometer. LÄS MER

  5. 19. Active Noise Control of Enclosed Sound Fields Optimising the Performance

    Författare :Per Sjösten; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; optimising actuator and sensor positions; hybrid controller for anc; fast feedforward algorithm; multiple-error algorithm; active noise control; complex lms; multichannel feedforward algorithm; simulated annealing; mean-field annealing; multiple-reference controller;

    Sammanfattning : Active noise control is the art of reducing a primary unwanted sound field by interference with an actively created secondary sound field. To achieve high reduction, it is crucial to obtain both temporal and spatial matching between the primary and the secondary sound fields. LÄS MER

  7. 20. Signal Processing as a Tool to Enhance Productivity in Industry : Measurement and Cancelation of Periodic Signals

    Författare :Sven Olsson; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Order analysis; Multi-plane shaft balancing; Time-window modification; Active vibration control; Adaptive vibration control;

    Sammanfattning : Preface This licentiate thesis summarizes my work within the field of Signal Processing during my time in Signal Control Sweden AB from 1987 to 2002. The work has been performed in close co-operation the customers like Volvo Personvagnar AB, Sveriges Provnings- och forskningsinstitut and others. LÄS MER