Abstract: Cushion is a key problem to develop high-speed pneumatic cylinder. Mathematic models of built-in cushion pneumatic cylinder are set up. Based on the relation between absorbed energy and impact energy, research how supply pressure affect cushion performance. Simulation is consistent with experimental results. According to analysis, a new type of high-speed pneumatic cylinder is designed, which has built-in cushion valve with supply pressure feedback. Experiments show the new cushion mechanism can self-adapt to supply pressure fluctuation in a certain range.

Key words: Cushion, High-speed pneumatic cylinder, Self-adaptation, Supply pressure fluctuation