Modeling and control of the temperature field in jet dispensing valve

Abstract

Fluid viscosity varying with fluid temperature is a key factor in influencing the volume consistency of the fluid jet dispensing process. In this paper, the mechanism model of the transient temperature field in jet dispensing valve was developed by applying heat transfer equations and thermal boundary conditions. Discrete solution of the model was achieved based on the Method of Lines. The design of PID controller was efficiently integrated into the proposed model to address the problem that the fluid temperature cannot keep stable at the set value in the jet dispensing valve. Simulations and experiments demonstrate the feasibility and efficiency of the proposed model. This paper provides references for analyzing and controlling the temperature of fluid in fluid jet dispensing process.