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Pregled bibliografske jedinice broj: 512801

Stability and performance limits for active vibration isolation using blended velocity feedback


Alujević, Neven; Wolf, Hinko; Gardonio, Paolo; Tomac, Ivan
Stability and performance limits for active vibration isolation using blended velocity feedback // Journal of sound and vibration, 330 (2011), 21; 4981-4997 doi:10.1016/j.jsv.2011.05.020 (međunarodna recenzija, članak, znanstveni)


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Naslov
Stability and performance limits for active vibration isolation using blended velocity feedback

Autori
Alujević, Neven ; Wolf, Hinko ; Gardonio, Paolo ; Tomac, Ivan

Izvornik
Journal of sound and vibration (0022-460X) 330 (2011), 21; 4981-4997

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
active control; active vibration isolation; blended velocity feedback; reactive actuators

Sažetak
This paper presents a theoretical study of active vibration isolation on a two degree of freedom system. The system consists of two lumped masses connected by a coupling spring. Both masses are also attached to a firm reference base by a mounting spring. The lower mass is excited by a point force. A reactive control force actuator is used between the two masses in parallel with the coupling spring. Both masses are equipped with an absolute velocity sensor. The two sensors and the actuator are used to implement velocity feedback control loops to actively isolate the upper mass from the vibrations of the lower mass over a broad range of frequencies. The primary concern of the study is to determine what type of velocity feedback configuration is suitable with respect to the five parameters that characterise the system (the three spring stiffnesses and the two masses). It is shown analytically that if the ratio of the lower mounting spring stiffness to the lower mass is larger than the ratio of the upper mounting spring stiffness to the upper mass (supercritical system), feeding back the absolute upper mass velocity to the reactive force actuator results in an unconditionally stable feedback loop and the vibration isolation objective can be fully achieved without an overshot at higher frequencies. In contrast, if the ratio of the lower mounting spring stiffness to the lower mass is smaller than the ratio of the upper mounting spring stiffness to the upper mass (subcritical system), the upper mass velocity feedback is conditionally stable and the vibration isolation objective can not be accomplished in a broad frequency band. For subcritical systems a blended velocity feedback is proposed to stabilise the loop and to improve the broad-band vibration isolation effect. A simple inequality is introduced to derive the combinations between the two error velocities that guarantee unconditionally stable feedback loops.

Izvorni jezik
Engleski

Znanstvena područja
Elektrotehnika, Strojarstvo, Zrakoplovstvo, raketna i svemirska tehnika



POVEZANOST RADA


Projekti:
023-0231744-1745 - Pogonska čvrstoća materijala i konstrukcija (Domazet, Željko, MZOS ) ( POIROT)
023-0231744-1747 - INVERZNI POSTUPCI I NAPREDNI ALGORITMI U DINAMICI KONSTRUKCIJA I STROJEVA (Lozina, Željan, MZOS ) ( POIROT)
120-0362321-2198 - Numerička i eksperimentalna istraživanja nelinearnih mehaničkih sustava (Wolf, Hinko, MZOS ) ( POIROT)

Ustanove:
Fakultet elektrotehnike, strojarstva i brodogradnje, Split,
Fakultet strojarstva i brodogradnje, Zagreb

Profili:

Avatar Url Ivan Tomac (autor)

Avatar Url Neven Alujević (autor)

Avatar Url Hinko Wolf (autor)

Citiraj ovu publikaciju:

Alujević, Neven; Wolf, Hinko; Gardonio, Paolo; Tomac, Ivan
Stability and performance limits for active vibration isolation using blended velocity feedback // Journal of sound and vibration, 330 (2011), 21; 4981-4997 doi:10.1016/j.jsv.2011.05.020 (međunarodna recenzija, članak, znanstveni)
Alujević, N., Wolf, H., Gardonio, P. & Tomac, I. (2011) Stability and performance limits for active vibration isolation using blended velocity feedback. Journal of sound and vibration, 330 (21), 4981-4997 doi:10.1016/j.jsv.2011.05.020.
@article{article, year = {2011}, pages = {4981-4997}, DOI = {10.1016/j.jsv.2011.05.020}, keywords = {active control, active vibration isolation, blended velocity feedback, reactive actuators}, journal = {Journal of sound and vibration}, doi = {10.1016/j.jsv.2011.05.020}, volume = {330}, number = {21}, issn = {0022-460X}, title = {Stability and performance limits for active vibration isolation using blended velocity feedback}, keyword = {active control, active vibration isolation, blended velocity feedback, reactive actuators} }
@article{article, year = {2011}, pages = {4981-4997}, DOI = {10.1016/j.jsv.2011.05.020}, keywords = {active control, active vibration isolation, blended velocity feedback, reactive actuators}, journal = {Journal of sound and vibration}, doi = {10.1016/j.jsv.2011.05.020}, volume = {330}, number = {21}, issn = {0022-460X}, title = {Stability and performance limits for active vibration isolation using blended velocity feedback}, keyword = {active control, active vibration isolation, blended velocity feedback, reactive actuators} }

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus


Citati:





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