Real-time closed-loop control of molten pool transient area in direct laser deposition via PID algorithm with enhanced robustness

稳健性(进化) PID控制器 控制理论(社会学) 闭环 瞬态(计算机编程) 循环(图论) 沉积(地质) 材料科学 算法 工程类 计算机科学 控制工程 化学 控制(管理) 数学 温度控制 人工智能 地质学 基因 操作系统 组合数学 古生物学 生物化学 沉积物
作者
Bingjun Liu,Weiwei Liu,Yukun Xia,Yujin Huang,Yanming Liu,Yongxin Zhao,Huanqiang Liu,Zhengkai Wang,Wanyang Li,Jianrong Song,Zongyu Ma,Zeyuan Liu
出处
期刊:The International Journal of Advanced Manufacturing Technology [Springer Nature]
卷期号:130 (9-10): 4529-4542
标识
DOI:10.1007/s00170-024-13002-2
摘要

In the direct laser deposition (DLD) process, it is common to employ constant processing parameters. The utilization of the constant parameters may lead to fluctuations in the dynamic evolution of the molten pool, primarily due to the intricate thermal effects involved, which will significantly impact the processing quality. To address this issue, this study proposed a closed-loop control approach that effectively modifies processing parameters in real time by targeting on the molten pool transient area. The type of the laser used in this study is a flat-top beam. Laser power, powder feeder rate, and scanning speed are the input variables of the study to control molten pool, considering the manufacturing system. The most suitable processing parameter to control the molten pool area was found to be the laser power by a set of orthogonal experiments, with a correlation coefficient of 0.706, and significance level of 0.002. Then, the dynamic response relationship between laser power and the molten pool area was mathematically characterized by a third-order transfer function model to simplify the complex physical model of the DLD process. Subsequently, a PID controller with a filtering coefficient and anti-windup compensation was chosen compared with the other controller. In the validation experiments, it was observed that the closed-loop processing group demonstrated improved stability in maintaining the molten pool transient area, with a notable decrease of 33.7% in variability compared to the open-loop processing group. As a result, the deposited layer of the closed-loop processing group exhibited a much more satisfying surface quality and heat affect zone than the open-loop group. This study established a third-order mathematical model of the dynamic molten pool and realized the optimization of deposition quality by controlling the molten pool transient area with an enhanced PID controller, providing a fundamental basis for improving the consistency of the direct laser deposition processing quality through the implementation of real-time feedback control of molten pool physics.

科研通智能强力驱动
Strongly Powered by AbleSci AI
科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
和谐诗双完成签到 ,获得积分10
3秒前
Astra完成签到,获得积分10
3秒前
邓大瓜完成签到,获得积分10
3秒前
健忘的晓小完成签到 ,获得积分10
4秒前
5秒前
芬芬完成签到 ,获得积分10
5秒前
5秒前
Loey完成签到,获得积分10
7秒前
AskNature完成签到,获得积分10
7秒前
DrPika完成签到,获得积分10
8秒前
倪小呆完成签到 ,获得积分10
9秒前
科研路上互帮互助,共同进步完成签到 ,获得积分10
9秒前
量子星尘发布了新的文献求助10
10秒前
spicyfish完成签到,获得积分10
12秒前
HopeLee完成签到,获得积分10
12秒前
llllliu发布了新的文献求助10
14秒前
认真的珠完成签到 ,获得积分10
14秒前
宝玉完成签到 ,获得积分10
14秒前
顺利的慕儿完成签到 ,获得积分10
16秒前
留猪完成签到,获得积分10
17秒前
含糊的无声完成签到 ,获得积分10
17秒前
量子星尘发布了新的文献求助10
19秒前
萨尔莫斯完成签到,获得积分10
19秒前
21秒前
21秒前
阿连发布了新的文献求助10
21秒前
zm完成签到 ,获得积分10
28秒前
英勇雅琴完成签到 ,获得积分10
32秒前
王kk完成签到 ,获得积分10
33秒前
Jerry完成签到,获得积分10
33秒前
sora完成签到,获得积分10
35秒前
pucca完成签到 ,获得积分10
37秒前
lenne完成签到,获得积分10
37秒前
ww完成签到 ,获得积分10
37秒前
李木头发布了新的文献求助10
37秒前
lzl008完成签到 ,获得积分10
39秒前
42秒前
43秒前
久伴久爱完成签到 ,获得积分10
43秒前
量子星尘发布了新的文献求助10
47秒前
高分求助中
(应助此贴封号)【重要!!请各用户(尤其是新用户)详细阅读】【科研通的精品贴汇总】 10000
Encyclopedia of Quaternary Science Reference Third edition 6000
Encyclopedia of Forensic and Legal Medicine Third Edition 5000
Introduction to strong mixing conditions volume 1-3 5000
Aerospace Engineering Education During the First Century of Flight 3000
Electron Energy Loss Spectroscopy 1500
Tip-in balloon grenadoplasty for uncrossable chronic total occlusions 1000
热门求助领域 (近24小时)
化学 材料科学 生物 医学 工程类 计算机科学 有机化学 物理 生物化学 纳米技术 复合材料 内科学 化学工程 人工智能 催化作用 遗传学 数学 基因 量子力学 物理化学
热门帖子
关注 科研通微信公众号,转发送积分 5789382
求助须知:如何正确求助?哪些是违规求助? 5718918
关于积分的说明 15474506
捐赠科研通 4917200
什么是DOI,文献DOI怎么找? 2646840
邀请新用户注册赠送积分活动 1594493
关于科研通互助平台的介绍 1548982