A Robust Design Method for Fluid Line Disppensing

In industry the line dispensing system has been widely used to squeeze the adhesive fluid in a syringe onto boards or substrates with the pressurized air. For consistent dispensing, it is vital to have a robust dispensing system insensitive to operation condition variation. To address this issue, much research effort has been done. However, a systematic design approach to determine an optimal operation condition for line dispensing is not available. This paper presents such a method by means of robust design. In particular, all kinds of the quantities involved in the dispensing task is classified in the framework of model-based robust design. By this approach, a robust design method for line dispensing can be developed. The results show that line dispensing performance robustness can be improved by choosing the appropriate system parameters. Simulations performed thereafter validate the effectiveness of the method.