• Acoustic levitation provides a novel active control method for frequency domain error of aerostatic spindles, addressing a critical limitation in ultra-precision machining.
• A multi-field coupling model (acoustic-magnetic-fluid-solid) was developed to simulate the rotor dynamics of the aerostatic spindle, enabling prediction of error control.
• Numerical simulations and preliminary experiments confirmed that acoustic levitation can effectively reduce frequency domain errors, validating the proposed method.
• This approach offers a promising solution for achieving full-frequency band error control in high-end optical component manufacturing.