The Research Of On-line Resin Viscosity Computer Control System

Viscosity is the ability of anti-position change in liquid. It is one of measurement of inner flow resistance. Measurement of Viscosity plays an important role in petroleum, chemistry, weaving, national defense, machine and electric power. It has great influence of product's performance of fiber-reinforced plastic, such as thickness, intension, gas closeness and cutting intensity etc. The higher resin viscosity is, the poorer its ability of moving and the worse proportioned of resin on the surface of raw and processed materials. On the contrary if resin's viscosity is very low, the capacity of resin in soiled thing become lower. Both this two conditions can lead to decrease product's performance. In the manufacturing of fiber reinforced plastic production, measurement and control of resin viscosity is always a difficult problem to resolve. It involves the way of measurement and control strategy. This article focuses on measurement and control of resin viscosity in Microcomputer control fiber winding machine or dipping glue machine. The purpose of this system is to change resin viscosity real time in accordance to actual needs, and then to improve product's performance.Now there are some special apparatuses to measure viscosity of liquid, but generally they just have function of measurement and most of them can't communicate with and be controlled by computer. The resin viscosity computer control system developed by author uses fuzzy control technology. According to error of viscosity and its trend it can carry out different control stratagems. We just change some setting parameters and then it can be used for different situation and improve flexibility of system. The software is based on Window98 operating system and use Object Oriented programming method. It uses the most advanced Visual programming language Visual C++ 6.0. Such language has merits of short developing period and stable performance. This article brings forward a way of computer control system. It can not only control resin viscosity online and display control curve, but also change target value through friendly control interface. It can be operated easily and it will greatly improve control effect.