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Modelling and analysis for the dynamic behavior of 6-DOF motion platform used for simulating aerospace mechanical environment

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As high carrying capacity, high frequency response and high precision control performance are presented, the 6 degree of freedom (DOF) motion platform is chosen as the aerospace device to implement mechanical environment simulation experiment on the ground. In this paper, a dynamic model of the 6 DOF motion platform is firstly developed based on the Newton-Euler method. Then the attitude determination and the driving force are analyzed by solving the dynamic equations. Furthermore, a parametric modelling method for the 6 DOF motion platform is proposed and applied to obtain the expansion amounts and the driving forces of the 6 hydraulic rods in the motion platform by adopting the Adams software. Results show a good agreement with the computation results of the theory dynamic model, which demonstratesthe validity of the proposed modelling method for analysis of the dynamic behavior of the 6-DOF motion platform.

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Document Type: Research Article

Affiliations: 1: Shanghai Institute of Aerospace System Engineering 2: Nanjing University of Aeronautics and Astronautics 3: 3 Shanghai Institute of Aerospace Control Technology

Publication date: 30 November 2023

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