摘要

A pneumatic cylinder is a common components widely used in machinery industry. There are increasing requirements on pneumatic cylinders to have high-speed and smooth movement. However, owing to the compressibility of the height of the air and the low viscosity, it is difficult to stop smoothly and steadily which influences the lifetime of the pneumatic cylinder. It is therefore necessary to have a good cushioning performance. In this paper we establish a mathematical model for a typical high speed pneumatic cylinder and verify it through computer simulation. We also analyze the dynamic oscillation of the pneumatic cylinder around the stopping end position and the factors involved. We optimize the parameters of the pressure relief valve using a genetic algorithm. The simulation results show that the cushioning performance of the pneumatic cylinder is well improved.

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