A Double Input - Quadruple Output Adaptive Controller for the Active Headrest System

• Autorzy: Pawełczyk M.
• Języki publikacji: EN

Abstrakty

EN

A system known as active headrest, generating the so-called zones of quiet at the ears of a person sitting in a chair is considered. It is shown that zones of highest noise reduction generated by a classical double input - double output control system do not reach the ears. To extend the zones four secondary sources, one located over another for each channel, are applied. The error microphones, one for each channel, are mounted between respective sources. Ali the components are arranged not to annoy the user, what impacts system performance. Internal model control with Filtered-x LMS algorithm is employed. Obtained results are presented graphically in the form of surfacial distribution of reduction areas. They confirm the expectations that the zones of high reduction significantly extend comparing to the double input - double output control system and really reach the ears, even in case of practical head movements.

Słowa kluczowe

EN

active headrest; multivariable feedback control

• Wydawca: Wydawnictwa AGH
• Czasopismo: Mechanika / Akademia Górniczo-Hutnicza im. St. Staszica
• Rocznik: 2003
• Tom: T. 22, z. 3
• Strony: 367--374
• Opis fizyczny: Bibliogr. 10 poz., rys.

Twórcy

autor

Pawełczyk M.

• Institute of Automatic Control, Silesian University of Technology, ul. Akademicka 16, 44-101 Gliwice, Poland,

Bibliografia

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• [3] Tseng W.K., Rafaely B., Elliott S.J.: Performance limits and real-time implementation of a virtual microphone active headrest. ACTIVE’02, Southampton, UK, 2002, 1231-1242
• [4] Holmberg U., Ramnér N., Slovak R.: Low complexity robust control of a headrest system based on virtual microphones and the Internal Model Principle. ACTIVE’02, Southampton, UK, 2002,1243-1250
• [5] Pawelczyk M.: Control of Sound in an Active Headrest System. IEEE Conference - MMAR’2002, Szczecin 2002,1157-1162
• [6] Kuo S.M., Morgan D.R.: Active Noise Control Systems. Algorithms and DSP implementations. New Jersey, J. Wiley & Sons 1996
• [7] Park C.: Evaluation and demonstration of advanced active noise control in a passenger automobile. ACTIVE’2002, Southampton, UK, 2002, 275-284
• [8] Kociołek R.: Active noise control in headrests (in Polish). M.Sc. Thesis. Gliwice. Silesian University of Technology 2002
• [9] Pawelczyk M.: Analysis of active noise control plants using process identification and signal processing methodology. Archives of Acoustics, 26(2), 2001,143-164
• [10] Elliott S. J.: Signal Processing for Active Control. London, Academic Press 2001