Intelligent Control Experiment Study for V-Shape Free Bending of Wide Sheet Metal

2008 ◽  
Vol 575-578 ◽  
pp. 186-191
Author(s):  
Jun Zhao ◽  
Chun Jian Su ◽  
Ying Ping Guan
Keyword(s):  
Sheet Metal ◽  
Intelligent Control ◽  
Control Experiment ◽  
Bending Process ◽  
Prediction And Control ◽  
The Neural Networks ◽  
Die Material ◽  
Object Of Study ◽  
And Control ◽  
Free Bending

The main problem in bending process of sheet metal is that it is difficult to control bending springback accurately. Springback produced from the unloading of bending makes the shape and size incongruent between bending workpiece and working portion of die. Because the final shape of bending workpiece is related with the whole deformation process, the geometric parameter of die, material performance parameter will have great effect on springback. Therefore, the springback problem is very complicated and the prediction and control of springback is the key to improve the accuracy of bending workpiece. Taking the V free bending of wide sheet as an object of study, the neural networks technology and data acquisition system based on LabVIEW are used to establish intelligent control experiment system for V free bending of wide sheet metal. The control accuracy of system is high and it provides the basis for the realization of intelligent control for V-shape free bending of wide sheet metal in practice in future.

Springback Compensation by Superposition of Stress in Air Bending

2009 ◽  
Vol 410-411 ◽  
pp. 621-628 ◽  
Author(s):  
Andres Weinrich ◽  
Nooman Ben Khalifa ◽  
Sami Chatti ◽  
Uwe Dirksen ◽  
A. Erman Tekkaya
Keyword(s):  
Sheet Metal ◽  
New Method ◽  
Lightweight Construction ◽  
Springback Compensation ◽  
Air Bending ◽  
Forming Technology ◽  
Bending Process ◽  
The Common ◽  
Metal Processing Industry ◽  
Free Bending

In the sheet metal processing industry bending is one of the common metal forming processes. Depending on the process state, a differentiation has to be made between free bending (air bending) in the die and coining (die bending). Because of its flexibility the air bending process is nowadays one of the widely applied processes for sheet metal bending, but the springback phenomenon is still a great challenge for the industrial application. At the Institute of Forming Technology and Lightweight Construction (IUL) of the Technische Universität Dortmund, Germany, a new method has been developed allowing the compensation of springback effects in air bending of sheet metals. This method is based on the incremental and local superposition of stresses in the forming zone. The superposition occurs after the bending operation but before unloading along the sheet metal width. The advantage of this new method is that a minimal force is required to compensate the springback. This paper describes the springback compensation method in detail and presents first experimental results.

An insight into Case Management and Challenges in Veteran Suicide Prevention

2020 ◽  
pp. 14-25
Author(s):  
Tamara Green
Keyword(s):  
Case Management ◽  
Suicide Prevention ◽  
Suicide Risk ◽  
Digital Transformation ◽  
Prevention Science ◽  
Historical Records ◽  
Military Members ◽  
Prediction And Control ◽  
And Control ◽  
Insight Into

Much of the literature, policies, programs, and investment has been made on mental health, case management, and suicide prevention of veterans. The Australian “veteran community is facing a suicide epidemic for the reasons that are extremely complex and beyond the scope of those currently dealing with them.” (Menz, D: 2019). Only limited work has considered the digital transformation of loosely and manual-based historical records and no enablement of Artificial Intelligence (A.I) and machine learning to suicide risk prediction and control for serving military members and veterans to date. This paper presents issues and challenges in suicide prevention and management of veterans, from the standing of policymakers to stakeholders, campaigners of veteran suicide prevention, science and big data, and an opportunity for the digital transformation of case management.

A case study of wear-type rail corrugation prediction and control using speed variation

2009 ◽  
Vol 325 (1-2) ◽  
pp. 85-105 ◽  
Author(s):  
P.A. Meehan ◽  
P.A. Bellette ◽  
R.D. Batten ◽  
W.J.T. Daniel ◽  
R.J. Horwood
Keyword(s):  
Rail Corrugation ◽  
Speed Variation ◽  
Prediction And Control ◽  
And Control

Optimization strategy of physical education teaching from the perspective of safety education

2021 ◽  
pp. 002072092110052
Author(s):  
Huibin Niu ◽  
Lefang Wang
Keyword(s):  
Control Experiment ◽  
Processing Method ◽  
Control Group ◽  
Optimization Strategy ◽  
Safety Education ◽  
Knowledge And Skills ◽  
Safety Knowledge ◽  
And Control ◽  
Experimental Group ◽  
Sports Activities

In this paper, from the perspective of safety education, we focus on sports the optimization strategy of curriculum teaching is studied. This paper adopts the methods of questionnaire survey and control experiment. In the study, 770 students' acceptance of safety education and acceptance content were investigated. At the same time, the students were divided into control group and experimental group. In addition, we use the adjustment processing method to analyze the experimental data, through the analysis of the students' safety knowledge, obstacle ability, attitude and frequency of participating in sports activities, and the preferred sports project selection. The results show that 62.1% and 36.6% of the subjects in the control group like and prefer to participate in sports activities, while 75.4% and 81.6% of the subjects in the experimental group like to participate in sports activities and prefer to participate in sports activities, Therefore, safety education can not only help students acquire safety knowledge and skills, but also improve students' enthusiasm to participate in sports activities.

Phenomenological Foundations for the Study of Suicide

1973 ◽  
Vol 4 (3) ◽  
pp. 195-208
Author(s):  
Keith Hoeller
Keyword(s):  
Great Emphasis ◽  
Prediction And Control ◽  
And Control

Is death the “enemy” to be avoided at all costs or is it to be faced, engendering liberation and rebirth? Contemporary suicidology concerns itself with the “causes” of suicide, placing great emphasis on prediction and control However, when the “meaning” of suicide is studied, understanding it as a human phenomenon becomes of major concern. Part of this understanding requires one to view “dread” as implying the possibility of making one's existence one's own, rather than something that must be prevented. In the study of suicide, revolutionary insights can emerge if less emphasis is placed on death as the “enemy” and more attention is placed on “dread” as a potential liberator.

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