Electrospinning direct-writing closed-loop control system and control method

Abstract

The invention relates to an electrospinning direct-writing closed-loop control system and a control method, which relate to electrospinning direct writing equipment. The invention provides the electrospinning direct-writing closed-loop control system which is capable of realizing the controllable adjustment of the electrospinning direct-writing nano fibre diameter and improves the jet injection stability of spinning and the uniformity of nano fibre diameter and the control method of the electrospinning direct-writing closed-loop control system. The system comprises a liquid storage tank, a liquid feeder, a spinning nozzle, a collecting plate, a weak current detector, a temperature sensor, a humidity sensor, a data collector, a control computer, a direct current high voltage power supply and an adjustable frame. The system establishes a fuzzy controller to obtain the jet injection state by detecting the spinning current, adjusts the applied voltage and the flow rate of the feeding liquid according to the change of the spinning current so as to avoid the influence of various interference factors and realize long time stable jet of the spinning jet flow. The set current of the fuzzy controller is adjusted to control the electrospinning direct-writing nano fibre diameter. The electrospinning direct-writing closed-loop control system is beneficial to improving the controllability of the electrospinning direct-writing nano fibre diameter and well promoting the industrialized application of the electrospinning direct-writing technology.

Description

technical field [0001] The invention relates to an electrospinning direct writing device, in particular to an electrospinning direct writing closed-loop control system and control method based on current feedback. Background technique [0002] With the application and development of flexible electronics and polymer micro-nano systems, the precise control and manufacture of polymer micro-nano structures has become a hot issue in the research of micro-nano technology. At present, large-area, low-cost, and rapid manufacturing has become an important trend in the development of polymer micro-nano device systems, and it is also the key to the popularization and application of polymer micro-nano device systems. Traditional manufacturing technologies based on exposure, etching and other processes cannot meet the development needs of polymer micro-nano device systems due to high manufacturing costs and harsh environmental requirements. [0003] Inkjet printing is one of the best ma...

AI Technical Summary

Problems solved by technology

The mathematical and physical model of electrospinning electro-hydraulic coupling process is complicated, and there is no clear mathematical control model, so it is not suitable to adopt traditional control methods such as PID

At present, the electrospinning direct writing technology has not established a suitable control for the time being. The adjustment of the electrospinning direct writing process parameters is mainly based on experience. The lack of a suitable control strategy limits the uniformity of the electrospinning direct writing micro-nano structure and the size of the direct writing micro-nano structure. The further improvement of controllability has become the bottleneck of the promotion and application of electrospinning direct writing technology

Images