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Optimization-Based Parameter Identification for Coupled Biodynamic Model of Seated Posture under Vibration
Journal Article
10-06-02-0011
ISSN: 2380-2162, e-ISSN: 2380-2170
Sector:
Topic:
Citation:
Yang, Y., Zhao, Q., and Yang, J., "Optimization-Based Parameter Identification for Coupled Biodynamic Model of Seated Posture under Vibration," SAE Int. J. Veh. Dyn., Stab., and NVH 6(2):159-173, 2022, https://doi.org/10.4271/10-06-02-0011.
Language:
English
Abstract:
We recently developed a three-direction (vertical, longitudinal, and lateral)
coupled biodynamic model of seated posture under vibration. However, in that
study we only tested one algorithm to identify the model parameters. This
article investigates four different optimization solvers in Matlab®, i.e.,
particle swarm optimization (particleswarm), particle swarm and local
optimization method (fmincon), genetic algorithm (ga) and local optimization
method (fmincon), and local optimization method (fmincon) to identify coupled
biodynamic model parameters. Based on the obtained parameters, it further
compares experimental and simulation results to determine the best optimization
solver in terms of the root mean square error (RMSE), linear regression
(R
2), goodness of fit (ε), and Central Processing Unit
(CPU) time. The results show that particle swarm optimization is the best one
for identifying the biodynamic model’s parameters.