Application of Static and Dynamic Magnetic Finite Elements Analysis to Design and Optimization of Transducers Moving Coil Motors

Voishvillo A, Kochendörfer F. Application of Static and Dynamic Magnetic Finite Elements Analysis to Design and Optimization of Transducers Moving Coil Motors. In: AES Convention 135. Audio Engineering Society; 2013. Paper 8989. Available from: https://aes.org/publications/elibrary-page/?id=17037

@inproceedings{Voishvillo2013_17037,
  author = {Voishvillo, Alexander and Kochendörfer, Felix},
  title = {{Application of Static and Dynamic Magnetic Finite Elements Analysis to Design and Optimization of Transducers Moving Coil Motors}},
  booktitle = {AES Convention 135},
  note = {Paper 8989},
  year = {2013},
  month = oct,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=17037}
}

TY  - CPAPER
TI  - Application of Static and Dynamic Magnetic Finite Elements Analysis to Design and Optimization of Transducers Moving Coil Motors
AU  - Voishvillo, Alexander
AU  - Kochendörfer, Felix
T2  - AES Convention 135
M1  - Paper 8989
PY  - 2013
DA  - 2013/10/06
UR  - https://aes.org/publications/elibrary-page/?id=17037
PB  - Audio Engineering Society
LA  - en
AB  - Transducer motors are potential source of nonlinear distortion. There are several nonlinear mechanisms that generate nonlinear distortion in motors. Typical loudspeaker nonlinear models include the dependence of the Bl-product and the voice coil inductance Lvc on the voice coil position and current. These effects cause nonlinearity in the driving force, electrodynamic damping, and generate nonlinear flux modulation and reluctance force. In reality, the voice coil inductance and resistive losses depend also on frequency. To take these effects into account the so-called LR-2 impedance model is used. The L2 and R2 elements are nonlinear functions of the voice coil position and current. In this work detailed analysis of a nonlinear model incorporating these elements is performed. The developed approach is illustrated by the FEA-based design and optimization of a new JBL ultra-linear transducer to be used in a new line array system.
ER  -