扬声器功率实验的温升仿真
温度对扬声器的影响体现在性能和可靠性两个方面。当散热不良、温度过高，可能导致音圈散圈、磁路脱胶、退磁等一系列问题，影响扬声器性能。温度过高还可能造成盆架等不耐温材料的形态改变，导致外观变形甚至破坏。 该模型求解的是扬声器零部件之间的热传导，以及空气的对流问题。通过建模仿真，可以得到功率实验时扬声器音圈、磁路和盆架的温度分布和温升曲线。经过验证，该模型得到的仿真结果与实测结果吻合较好。这对于评估扬声器材料耐温能力和功率实验风险有很好的指导意义。 此模型需要“CFD模块”、“传热模块”和COMSOL Multiphysics®。
The effect of temperature on loudspeaker performance and reliability are two aspects. When the heat dissipation is poor and the temperature is too high, it may lead to a series of problems such as voice coil dispersion, motor come unglued and demagnetization, which will affect the speaker performance. Too high temperature may also cause the shape change of non-temperature-resistant materials such as plastic basket, resulting in appearance deformation and even damage. The model deals with the heat transfer between loudspeaker parts and the convection of air. Through modeling and simulation, the temperature distribution and temperature rise curves of speaker voice coil, motor and basket during power experiment can be obtained. After verification, the simulation results obtained by the model are in good agreement with the measured results. This has a good guiding significance for evaluating the temperature resistance of materials of speakers and evaluate the risk in power test. This model requires "CFD module", "Heat transfer module" and COMSOL Multiphysics®.
