Numerical value simulating method for loudspeaker magnetic circuit system

Abstract

The invention discloses a numerical value simulating method for a loudspeaker magnetic circuit system. The method comprises the following steps of firstly drawing a three-dimensional (or two-dimensional) geometric model of a loudspeaker magnetic circuit system by a three-dimensional drawing software; leading the geometric model in a mesh generation software to perform mesh generation to obtain a body unit (or a facet unit); defining the unit type, material property and associating to the corresponding body unit (or facet unit) to obtain a limit element model of a magnetic circuit system; saving the limit element model as a file type capable of being identified by unit software; and then leading the limit element model in limit element software, adding a voice coil mark, calibrating the absorbing boundary, and finally defining a static analysis to perform solving and obtaining the results of magnetic field distribution situation, voice coil B1 value, B value on certain points an the like of the loudspeaker magnetic circuit system after post-processing, and displaying the results in image forms.

Description

technical field [0001] The invention belongs to the field of loudspeakers, and relates to a simulation method for the magnetic circuit characteristics of the loudspeaker, in particular to a numerical simulation method for analyzing the magnetic circuit of the loudspeaker. Using this method to analyze the magnetic circuit of the loudspeaker, the magnetic field characteristics of the magnetic circuit of the loudspeaker can be obtained, including the magnetic flux density (also known as induction intensity, symbol B ) distribution and the corresponding position of the voice coil Bl value, you can use the magnetic induction diagram, B or magnetic field strength (symbol H ) to depict the distribution of the magnetic field in the form of cloud diagrams and vector diagrams. It can be widely used in the design of the magnetic circuit of the moving coil loudspeaker. Background technique [0002] Traditional loudspeaker analysis and design methods are mainly empirical methods. G...

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Problems solved by technology

[0005] The main problems to be solved by the present invention are: (1) In the empirical method, the defect of the magnetic circuit of the loudspeaker can only be found after the sample of the magnetic circuit is produced and must be repeatedly copied; (2) The development cycle is long and the cost is high when the sample is repeated. (3) It is difficult to determine whether the magnetic field change in the improved sample is due to the magnetic circuit structure itself or the process; (4) It is difficult for other software to numerically simulate the magnetic circuit with asymmetric structure

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