In order to understand its dynamic characteristics in operation, a four-stage 2Z-X (a) planetary gear train was simulated based on ADAMS. The simulation uses the solid contact model to analyze the meshing force vibration of the gear train under the condition of constant speed and variable speed, and uses FFT to understand the frequency characteristics of the gear train meshing. The research provides the basis for the follow-up design and optimization.

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Based on digital simulation technology, the dynamic characteristics of a NC machine tool column are studied, including modal analysis and harmonic response analysis. Then the response surface of design parameters and indicators is obtained based on the experimental design. Finally, the optimal design is obtained by using genetic algorithm based on response surface.

Aiming at the problem that the output force of the cylinder is small, this paper studies a method based on the simulation technology to obtain the larger output force and realize the stepless control of the output force. Through the simulation analysis, it can be seen that the system can achieve a more stable output force control when the system damping is large. There will be a certain amount of impact when each stage of cylinder is started.

Cushion cylinder is often used to alleviate collision in pneumatic manipulators. The pneumatic cushion circuit is a complex system, so it is difficult to calculate the contact force accurately. In order to solve this problem, the virtual experiment is carried out by digital simulation based on experimental design and response surface method, and the contact force prediction model of cushion cylinder is obtained by analyzing the experimental data.