用于微电火花加工制备纳米铋胶体的比例-积分-微分（PID）优化技术的开发。

Development of Proportional-Integrative-Derivative (PID) Optimized for the MicroElectric Discharge Machine Fabrication of Nano-Bismuth Colloid.

作者信息

Tseng Kuo-Hsiung, Chang Chaur-Yang, Cahyadi Yagus, Chung Meng-Yun, Hsieh Chin-Liang

机构信息

Department of Electrical Engineering, National Taipei University of Technology, Taipei 10608, Taiwan.

Management Department, Infosystem Technology, Hsinchu 30062, Taiwan.

出版信息

Micromachines (Basel). 2020 Nov 30;11(12):1065. doi: 10.3390/mi11121065.

DOI:10.3390/mi11121065

PMID:33266060

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7760149/

Abstract

Metal nanoparticles are typically prepared by using a chemical method, and a suspension is added to control the particle size and concentration of the nanoparticles. In this study, a micro-electric discharge machine (micro-EDM) was used to melt bismuth into nanoparticles, thus yielding a colloidal solution. No chemicals were added during the manufacturing process, and pure water was used as the medium. The colloid was assessed using an electrohydraulic system, and process parameters were adjusted for optimization; additionally, the discharge pulse wave was analyzed. The proposed preparation process is simple, fast, and cost-effective; moreover, the manufacturing process allows for mass production and reduces environmental pollution. Experimental results revealed that the nano-bismuth (nano-bi) colloidal solution was successfully prepared by the micro-EDM, and absorption peaks in the UV-vis spectrum were observed at 234 and 237 nm. Moreover, to optimize the proportional-integral-derivative (PID) control parameters to be used in the micro-EDM to prepare the nano-bi colloidal solution, this study derived a mathematical model of the micro-EDM. MATLAB was used to obtain the PID parameters. The discharge success rate (74.1876%) for the nano-bi colloidal solution prepared using our method was higher than that (46.9196%) obtained for a nano-bi colloidal solution prepared using an online adaptation method.

摘要

金属纳米颗粒通常采用化学方法制备，并添加悬浮液以控制纳米颗粒的粒径和浓度。在本研究中，使用微电火花加工机床（micro-EDM）将铋熔化成纳米颗粒，从而得到一种胶体溶液。制造过程中未添加任何化学物质，而是使用纯水作为介质。使用电动液压系统对胶体进行评估，并调整工艺参数以实现优化；此外，还对放电脉冲波进行了分析。所提出的制备工艺简单、快速且具有成本效益；此外，该制造工艺能够进行大规模生产并减少环境污染。实验结果表明，通过微电火花加工机床成功制备了纳米铋（nano-bi）胶体溶液，并且在紫外可见光谱中观察到在234和237 nm处有吸收峰。此外，为了优化微电火花加工机床中用于制备纳米铋胶体溶液的比例积分微分（PID）控制参数，本研究推导了微电火花加工机床的数学模型。使用MATLAB获取PID参数。使用我们的方法制备的纳米铋胶体溶液的放电成功率（74.1876%）高于使用在线自适应方法制备的纳米铋胶体溶液的放电成功率（46.9196%）。