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Inverse dynamics problem of large-displacement motion simulator is solved by Roberson-Wittenburg method. Simulation graphs plotted by matlab prove the validity of solution. This paper can be used in control studies of motion simulator.

The kinematics and dynamic analysis of the large-displacement motion simulator is analyzed and derived in detail. By using MATLAB program, the simulation curves of the derived kinematics and dynamic formula match to the practical situation. Our result will provide the theoretical direction for the further study of the large-displacement motion simulator.

The large-displacement motion simulator which composed by Cartesian coordinate movement Desk and Three-axis turntable was designed in this paper. This Motion simulator can move the working spaces to any position of the space by any posture, which solved the disadvantages of the STEWART platform, the smaller spatial displacement and limited space corner. Kinematic analysis of the large-displacement motion simulator was discussed in this article, and theoretical modeling of the large-displacement motion simulator was presented by KANE equations. This has the theoretical significance for the research of the technology of space motion simulation and docking.

The seismic reliability analysis of complex structure is carried out based on the response surface method and finite element method. Firstly, the appropriate design points are selected based on the mean values and standard deviations of the basic random variables. Secondly, the finite element method is employed to obtain the values of the limit state function of the complex structure. Thirdly, with selected design points and the obtained values of the limit state function of the complex structure, a polynomial function is constructed to approximate the original implicit limit state function. Then, with the established explicit polynomial limit state function and available methods of structural reliability analysis, the seismic reliability of the complex structure is estimated. Numerical analyses show that the established method is simple to use for the evaluation of the reliability analysis of complex structure.

In this paper, a new method is given about using Hamilton principle to establish multi-degree-of-freedom electro-hydraulic mix-drive motion simulator model. And dynamic analysis is performed based on kinetics and kinematics. The simulation is done on multi-degree-of-freedom electro-hydraulic mix-drive motion simulator and Hamilton principle. As cases, some calculating results on dynamic simulation are plotted with the help of Matlab Lagrange. The work in the paper could be seen as a theoretical basis to research motion simulator in depth.

This paper has designed a multi-degree-of-freedom electro-hydraulic mix- drive motion simulator, which could move and turn spatially. It has both the advantages of the parallel turnplate and the series turnplate. The homogeneous coordinate transformation matrix was used to analyze the simulator’s state of motion. The position and attitude matrix for describing the simulator movement has been obtained. The kinematics equation for showing the relation of the positions between hydraulic drive rod and the turnplate was given, thus provided the theory basis for the further research to the simulator.