Simulation of fuzzy control systems for nonferrous alloy vacuum counter-pressure casting

1 INTRODUCTION Vacuum counter-pressure casting technology is a kind of advanced counter-gravity method. It has characteristics of vacuumsuction casting,low- pressure casting and pressure kettle casting con- currently ,and its technology theory adopts to fill mould under low pressure or vacuumand to crys- tallize under high pressure ,so it has predominant filling hydrodynamics and solidification mechanics condition1].It shows enormous vitalities in near net shape ,large-scale , thin-wall a…

Simulation of fuzzy control systems for nonferrous alloy vacuum counter-pressure casting

Through simulation analyses of vacuum counter-pressure casting fuzzy control systems based on MATLAB, fuzzy control systems designed by simulation can track technical route established well. When transmission functions of vacuum counter-pressure casting controlled objects are changed in operation, fuzzy control systems can carry on self-regulation and stabilize quickly, and embody the advantages of fleet response velocity and little adjusting quantity. The design of vacuum counter-pressure casting fuzzy control systems is accelerated and improved greatly by simulation based on MATLAB. Meanwhile, their design is accurate and reliable. Moreover, microstructure and properties of thin-wall aluminum alloy castings are improved effectively by using fuzzy control systems.