Simulation method of electro-spinning fiber closed-ring control based on finite element and system discrimination

Abstract

The invention discloses a simulation method of electro-spinning fiber closed-ring control based on the finite element and system discrimination. The method comprises the following steps of: (1) solving and establishing a finite element electro-spinning fiber motion model by adopting matlab software, and simulating the electro-spinning fiber moving process to obtain a virtual test system; (2) acquiring input and output values based on the virtual test system, and processing the input and output values by adopting a least square system discrimination method to acquire a procedure transfer function of the system; (3) setting a procedure transfer function controller; and (4) leading the controller to act on the finite element electro-spinning fiber motion model to realize simulation to the electro-spinning fiber closed-ring control. According to the method, time-based PID (proportion integration differentiation) control action is directly reflected into the finite element motion model to perform closed-ring control simulation, the limitation of respectively and independently performing electro-spinning fiber motion analysis and the limitation of a controller are eliminated, cost is reduced, the problem of controlling fiber diameters in the existing device is solved, and support is provided to automation of electro-spinning fiber manufacture devices.

Description

technical field [0001] This patent relates to a closed-loop control simulation method for electrospinning fibers based on finite element and system identification, which belongs to the field of automation technology. Background technique [0002] Due to its huge specific surface area and high porosity, electrospun fibers have attracted attention in many fields such as tissue engineering, coaxial cables, and drug sustained release, and have broad application prospects. The diameter of the electrospun fiber determines the chemical quality of the formed fiber product. The research on the control technology of the electrospun fiber diameter has become the key to the further development of the electrospun fiber. However, the diameter of the fiber is mostly at the micro-nano level, and the fiber diameter cannot be effectively detected online. , can not achieve effective control of fiber diameter. [0003] After searching the existing literature, it was found that Ravikant Samatha...

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art, provide a closed-loop control simulation method for electrospun fibers based on finite element and system identification, and realize closed-loop control of the diameter of electrospun fibers. The fiber motion model, directly adjusts the PID controller to realize the simulation of the closed-loop control of the electrospun fiber diameter, which overcomes the problems of poor real-time response of the fiber diameter and difficult control of the fiber diameter in the existing equipment

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