Static analysis of a balanced armature receiver. Issue 4 (2nd July 2018)

• Record Type: Journal Article
• Authors: Ziolkowski, Marcin; Kwiatkowski, Wojciech; Gratkowski, Stanislaw; Ziolkowski, Marek
• Is Part Of: Compel. Volume 37:Issue 4(2018)
• Page Start: 1392
• Page End: 1404
• Publication Date: 2018-07-02
• Subjects: Finite element method -- Electromechanical transducers -- Balanced armature receiver -- Electromagnetic acoustic transducer -- Lumped network approach; Electrical engineering -- Data Processing -- Periodicals; Electrical engineering -- Mathematics -- Periodicals; Electrical engineering -- Periodicals; Electronics -- Data Processing -- Periodicals; Electronics -- Mathematics -- Periodicals; 621.3
• DOI: 10.1108/COMPEL-09-2017-0376
• Languages: English
• ISSNs: 0332-1649

Abstract

Abstract : Purpose: A balanced armature receiver (BAR) as a special type of electromagnetic acoustic transducers plays a significant role in reproduction of music and speech, active noise control in modern hearing aid and in contemporary in-ear monitors. This paper aims to present a static analysis of the balanced armature receiver based on the lumped network approach (LNA) and the finite element method (FEM). Design/methodology/approach: In this paper, the LNA and two-dimensional FEM are applied to model deflections of the BAR's armature from the equilibrium position. Results of calculations are compared with measurements. Findings: The derived analytical formulas and developed procedure allow for calculation of the armature deflection. Originality/value: Comparing to the previous papers, the reluctance's nonlinearity of the armature has been considered.