TY - GEN
T1 - Stability analysis and performance evaluation of a feedback controller for local control of sound
AU - Tseng, Wen Kung
N1 - Copyright:
Copyright 2012 Elsevier B.V., All rights reserved.
PY - 2011
Y1 - 2011
N2 - This paper investigates the performance and stability of a virtual microphone feedback controller for local control of sound through theoretical analysis and simulations. A novel method to design a stable feedback controller for the local control system is also presented in this paper. The local control system is designed to attenuate a broadband disturbance at a point near the listener's ear, i.e. the virtual microphone, rather than at the control microphone, i.e. the physical microphone. The results showed that if a good performance was to be achieved the controller would be unstable. This is because the magnitude of the response of the virtual plant is lower than that of the physical plant. The feedback controller in this work is designed to minimize the noise at the virtual microphone, with a virtual plant response used in the performance objective. However the physical plant is used in the stability constraint. Therefore there is a trade-off between the performance and controller stability.
AB - This paper investigates the performance and stability of a virtual microphone feedback controller for local control of sound through theoretical analysis and simulations. A novel method to design a stable feedback controller for the local control system is also presented in this paper. The local control system is designed to attenuate a broadband disturbance at a point near the listener's ear, i.e. the virtual microphone, rather than at the control microphone, i.e. the physical microphone. The results showed that if a good performance was to be achieved the controller would be unstable. This is because the magnitude of the response of the virtual plant is lower than that of the physical plant. The feedback controller in this work is designed to minimize the noise at the virtual microphone, with a virtual plant response used in the performance objective. However the physical plant is used in the stability constraint. Therefore there is a trade-off between the performance and controller stability.
UR - http://www.scopus.com/inward/record.url?scp=79957711133&partnerID=8YFLogxK
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U2 - 10.4028/www.scientific.net/AMM.55-57.2060
DO - 10.4028/www.scientific.net/AMM.55-57.2060
M3 - Conference contribution
AN - SCOPUS:79957711133
SN - 9783037850992
T3 - Applied Mechanics and Materials
SP - 2060
EP - 2064
BT - Recent Trends in Materials and Mechanical Engineering Materials, Mechatronics and Automation
T2 - 2011 International Conference on Recent Trends in Materials and Mechanical Engineering, ICRTMME 2011
Y2 - 27 January 2011 through 28 January 2011
ER -