Papers by Author: Chang Juan Jing

Abstract: Electrospinning is kind of unique craft to fabricate nanoscale fiber in the condition of high-voltage electric field. However, due to the nanoscale diameter manufacturing, it is a challenge to get the whole manufacturing process stable at certain level. For that sake, this paper figures out the monitor method for the electrospinning equipment, which solves the former matter as well as makes the fiber generating process in control. According to the method, CCD camera is put forward to make the detection of the Taylor cone image continuously, while pattern recognition algorithm is used to real-time monitor the shape and size of Taylor cone which indicate the stable process of electrospinning. In order to get the stable Taylor cone shape, the processing result is used as feedback signal for control system of the electrospinning equipment to coordinate the feeding module or power supply module. As a result, the problem of nonuniformity and uncontrollable about electrospinning has been solved effectively; what's more, experiments testify that this method is reliable and effective.

Abstract: In order to solve the problem that bone cells can not adhere to the pore wall, the paper introduces a new method that combines RP method with electrostatic spinning method is used for the preparation of a comprehensive new bone scaffold technology, and pays close attention on the automatic control of process parameters, the feeding speed. According to the model of feed speed and the diameter of nano-fibers, a theoretical guidance is given to the real-time control of feed speed, and a new feeding device, including the configuration software iFIX, a microcontroller, a sensor and stepping motor, is presented. It can give a real-time effective control of the feed speed, which provides a theoretical and technological basis for the quality of scaffolds prototyping.

Abstract: Electrospinning is an advanced manufacturing technology combined with machinery, automatic control and computing technology, it is popular used in numbers of fields and has appealed the attention of a great many scholars in and aboard, and its controllable ability has become the fuscous point. In order to make seize of the fiber diameter and realize the collection aligned, this paper designed a new device basing on the analysis of the influence elements during the electrospinning experiment in the direction of process control to achieve effectively organization on these parameters. What’s more, the writer showed not only the mechanical structure, but also the corresponding system design, focusing on the plan of coordination multi-axis motion with movement control CARDS. After all, this device is able to complete the effective coordination of spray distance and the target velocity, and improves the manage ability of the whole device operation.

Abstract: Power is the direct force in the process of electrospinning, as voltage takes one of the great main roles effecting the quantity of the fiber, making a model of the generater would be in sense to control the morphology.On analysising the working principle,this paper first design a suitable high voltage dc power,and then take an exam in the Simulink environment of Matlab 2009,finally it was certified to be right comparing to the standard situation.