Abstract: An integrated dynamic model of pilot anti-G system is developed, which is composed of G-ELBP sub-model, human PBG suc-model, AGV-AGS sub-model, mask sub-model, Tilt-back seat sub-model, AGSM sub-model and AGS pressure-aortic outlet pressure sub-model. It can be used to investigate G-Tolerance and duration time in different kinds of acceleration profiles and anti-G equipments. In different G-profiles （such as GOR, ROR and SACM）, the agreement between model prediction and experimental data is satisfactory.

Key words: anti-G system, dynamic model, system identification