Application of Fussy-PID Control in Freeze-Drier / 医疗卫生装备

ABSTRACT

Objective To improve the freeze-dryer shelf temperature control effect.Methods The fuzzy-PID control algorithm that's adjusting the PID parameters in real-time in the control process,was adopted to control the shelf temperature,expecting to adapt the changing of process parameters of shelf.Results In the process of freeze-drying temperature control shelves,the shelf temperature static performance and dynamic performance were improved,and the effect of shelf temperature control was archived satisfyingly.Conclusion In the freeze-drying process,the process parameters of shelf are changed along with the drying time and the working environment.The conventional PID control is difficult to obtain satisfactory results.The fuzzy-PID controller,which can adjust PID parameters on real-time in the controlling process,be used in the shelf temperature control,and the result is satisfied.