White Noise Method for Road Roughness Simulation

This white noise-based road roughness simulation program generates time-domain excitation signals that represent road surface irregularities. The implementation utilizes a mathematical approach where Gaussian white noise is filtered through appropriate transfer functions to match standard road profiles according to ISO 8608 specifications. Key algorithmic components include power spectral density calculations, inverse Fourier transforms, and spatial-frequency domain conversions. The program can simulate vibrations for different vehicle types traveling on various road surfaces, aiding road engineers in better understanding pavement characteristics and ride comfort for improved highway planning and design. Additionally, automotive manufacturers can use this simulation to test and optimize vehicle suspension systems, incorporating features like RMS value calibration and profile classification to enhance passenger comfort and safety through parameterized road models and customizable amplitude scaling.