Study on air inflow of a passive suction cup

It is necessary to know the air inflow of suction cup for the designing of a new passive suction cup, which not only could easily attach and detach, but also could keep long adsorption time. This paper proposes a method to calculate the air inflow and its speed, which is easy to implement since it only requires a pressure sensor. Before calculating the air inflow, the factors affecting it should be known. In order to find this factors, experiments are conducted to find the effect of diameter, material, pulled height of displacement of a suction cup and wall condition.