Design Optimisation

Numerical simulation provides a powerful tool for design optimisation.  Engineering design parameters such as the geometry, materials and loads can all be parameterised within a numerical model.  A parameterised sweep can then be performed on one or more of the design factors to determine how the system performs relative to critical design constraints.

An example is the performance of an electrostatic speaker with a variation the pre-stress applied to the oscillating membrane.   The reduction of the pre-stress level will affect the low-end roll-off of the speaker and thereby changes the speaker’s frequency response.  However, the pre-stress level will also affect distortion levels.  A model of the speaker can have the pre-stress level parameterised between predefined minimum and maximum values and solved to determine the variation in frequency response and total harmonic distortion; and an optimum value thereby determined.  More complex optimisation can be undertaken by parameterising more than one parameter and looking at the performance over a larger parameter space.

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