Abstract:Human centrifuges are getting more attention for their ability to provide continuous high G-load simulation. We analyze the application demand and research status of fidelity evaluation of human centrifuges based on motion perception in this paper. The evaluation model considers the characteristics and influence of the human perception threshold. The membership function of motion perception evaluation is established by fuzzy evaluation. Regarding the characteristics of motion perception, we focus on analyzing the influence of the direction error of G-load simulation on the fidelity of perception simulation. To improve the evaluation rationality in the case of close memberships, we establish the corresponding rules with strict evaluation principles, enabling more reasonable fidelity evaluation. Moreover, two groups of flight data are evaluated and compared.