Machine Vision Monitoring for Automated Surface Finishing

1999 ◽  
Vol 121 (3) ◽  
pp. 457-465 ◽  
Author(s):  
C. Bradley ◽  
S. Kurada
Keyword(s):  
Surface Roughness ◽  
Machine Vision ◽  
Closed Loop ◽  
Surface Finishing ◽  
Critical Surface ◽  
Closed Loop System ◽  
Texture Information ◽  
Computer Controlled ◽  
Finishing Tool ◽  
Die And Mold

A considerable amount of research has recently been performed on automated die and mold finishing systems. The research has tended to focus on the development of the finishing tool, the means of positioning and controlling the tool or efficient algorithms for moving the tool to achieve desired degrees of surface roughness. However, there has been relatively less effort to develop sensors suitable for providing the critical surface finish data necessary for any closed loop system. This paper presents two algorithms that, when coupled with machine vision hardware, are capable of providing surface texture information. The algorithms are developed and the results calibrated against a stylus profilometer. Tests have been conducted on mold cavity surfaces and the results evaluated against standard tactile means. The hardware has been incorporated with a computer controlled coordinate machine.

scholarly journals Study on Magnetic Abrasive Finishing Process of AlSi10Mg Alloy Curved Surface Formed by Selective Laser Melting

2021 ◽  
Author(s):  
Yuntao Cui ◽  
Guixiang Zhang ◽  
Tonglei Cui ◽  
Peixin Zhu ◽  
Jiajing Du ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Permanent Magnet ◽  
Selective Laser Melting ◽  
Surface Hardness ◽  
Curved Surface ◽  
Surface Finishing ◽  
Laser Melting ◽  
Surface Sample ◽  
Surface Samples ◽  
Finishing Tool

Abstract In this paper, AlSi10Mg alloy powder is selected as the forming powder of Selective Laser Melting technology, and the AlSi10Mg alloy SLM curved surface sample is constructed by setting the internal and external layering parameters. In view of the relatively rough surface roughness of SLM technology molded parts, this paper selects the magnetic finishing technology with higher flexibility characteristics to perform surface finishing and finishing on the formed curved surface samples. Explore the feasibility of magnetic finishing technology on the finishing of SLM shaped curved parts, and test and analyze the surface roughness, surface hardness and hydrophobicity of the finishing permanent magnet tools and the curved surface samples before and after finishing. Finally, it was found that the use of a 75° trapezoidal slotted permanent magnet finishing tool to absorb spherical Al2O3 magnetic abrasives for flexible finishing of AlSi10Mg alloy SLM shaped curved surface samples can achieve better finishing results.In this paper, the orthogonal experiment method is used to optimize the finishing experiment. It is found that the finishing parameters of the spindle speed is 1800 r/min, the feed rate is 5 mm/min, the gap is 2 mm, and the abrasive consumption is 7g to form the AlSi10Mg alloy SLM. The surface roughness Ra=0.279μm can be obtained by magnetic finishing of the curved sample, and the surface morphology of the sample has been greatly improved. At the same time, it is found that the magnetic finishing technology improves the surface roughness of the AlSi10Mg alloy SLM forming surface sample, while it does not change the surface hardness of the sample, but it can significantly improve the hydrophobicity of the sample surface.

An Optimization-Based Framework for Simultaneous Plant-Controller Redesign

1990 ◽  
Author(s):  
Robert Beyers ◽  
Subhas Desa
Keyword(s):  
Performance Improvement ◽  
Closed Loop ◽  
Optimization Problems ◽  
Dynamic Performance ◽  
Mechanical Systems ◽  
Loop System ◽  
Closed Loop System ◽  
Central Notion ◽  
Computer Controlled

Abstract In this paper we develop a framework for the redesign of computer-controlled, closed-loop, mechanical systems for improved dynamic performance. A central notion which underlies the redesign framework is that, in order to achieve the best possible performance from a constrained closed-loop system, the plant and controller should be designed simultaneously. The framework is presented as the formulation and solution of a progression of optimization problems which enable the designer to systematically establish the various redesign possibilities. An example clearly demonstrates the underlying ideas as well as the use of the redesign framework for performance improvement.

A Versatile, Computer-Controlled, Closed-Loop System for Continuous Infusion of Muscle Relaxants

1993 ◽  
Vol 68 (11) ◽  
pp. 1074-1080 ◽  
Author(s):  
SAIED J. ASSEF ◽  
ROBERT L. LENNON ◽  
KEITH A. JONES ◽  
MICHAEL J. BURKE ◽  
TERRENCE L. BEHRENS
Keyword(s):  
Continuous Infusion ◽  
Closed Loop ◽  
Muscle Relaxants ◽  
Loop System ◽  
Closed Loop System ◽  
Computer Controlled

A VERSATILE COMPUTER-CONTROLLED CLOSED-LOOP SYSTEM FOR CONTINUOUS INFUSION OF MUSCLE RELAXANTS

1991 ◽  
Vol 75 (3) ◽  
pp. A467-A467 ◽  
Author(s):  
S. J. Assef ◽  
K. A. Jones ◽  
R. L. Lennon ◽  
M. J. Burke ◽  
T. L. Behrens
Keyword(s):  
Continuous Infusion ◽  
Closed Loop ◽  
Muscle Relaxants ◽  
Loop System ◽  
Closed Loop System ◽  
Computer Controlled

An Optimization-Based Framework for Simultaneous Plant-Controller Redesign

1994 ◽  
Vol 116 (2) ◽  
pp. 396-404 ◽  
Author(s):  
R. Beyers ◽  
S. Desa
Keyword(s):  
Dynamic System ◽  
Optimization Problem ◽  
Closed Loop ◽  
Optimization Problems ◽  
Dynamic Performance ◽  
Loop System ◽  
Nonlinear Controller ◽  
Closed Loop System ◽  
Central Notion ◽  
Computer Controlled

In this paper we develop a framework for the redesign of computer-controlled, closed-loop, mechanical systems for improved dynamic performance. A central notion which underlies the redesign framework is that, in order to achieve the best possible performance from a constrained closed-loop system, the plant and controller should be designed simultaneously. The framework is presented as the formulation and solution of a progression of optimization problems which establish the limits of performance of the dynamic system under various conditions of interest, thereby enabling the engineer to systematically establish the various redesign possibilities. Using a second order linear dynamic system and a nonlinear controller as an example, we demonstrate the application of the framework and substantiate the idea that in order to achieve the best possible performance from a constrained closed-loop system, the plant and controller should be redesigned simultaneously. We then show how the redesign framework can be used to select the best control strategy for a robotic manipulator from a dynamic performance standpoint. Finally, in order to demonstrate that the redesign framework yields solutions which the engineer can implement with confidence, we present the experimental verification of the numerical solution of a manipulator redesign optimization problem.

Safety and Performance of the Omnipod®Hybrid Closed-Loop System in Adolescents with Type 1 Diabetes over Five Days Under Free-Living Conditions

Diabetes ◽  
2018 ◽  
Vol 67 (Supplement 1) ◽  
pp. 1376-P
Author(s):  
GREGORY P. FORLENZA ◽  
BRUCE BUCKINGHAM ◽  
JENNIFER SHERR ◽  
THOMAS A. PEYSER ◽  
JOON BOK LEE ◽  
...  
Keyword(s):  
Type 1 Diabetes ◽  
Closed Loop ◽  
Living Conditions ◽  
Loop System ◽  
Closed Loop System ◽  
Free Living ◽  
And Performance ◽  
Free Living Conditions

1066-P: Improvement in Time-in-Range (TIR) with Real-Life Use of Hybrid Closed-Loop System in Patients with Type 1 Diabetes (T1D)

Diabetes ◽  
2019 ◽  
Vol 68 (Supplement 1) ◽  
pp. 1066-P
Author(s):  
HALIS K. AKTURK ◽  
DOMINIQUE A. GIORDANO ◽  
HAL JOSEPH ◽  
SATISH K. GARG ◽  
JANET K. SNELL-BERGEON
Keyword(s):  
Type 1 Diabetes ◽  
Closed Loop ◽  
Real Life ◽  
Loop System ◽  
Closed Loop System ◽  
Time In Range

Safety and Performance of the Omnipod® Hybrid Closed-Loop System in Adults with Type 1 Diabetes over Five Days Under Free-Living Conditions

Diabetes ◽  
2018 ◽  
Vol 67 (Supplement 1) ◽  
pp. 207-OR
Author(s):  
BRUCE A. BUCKINGHAM ◽  
JENNIFER SHERR ◽  
GREGORY P. FORLENZA ◽  
THOMAS A. PEYSER ◽  
JOON BOK LEE ◽  
...  
Keyword(s):  
Type 1 Diabetes ◽  
Closed Loop ◽  
Living Conditions ◽  
Loop System ◽  
Closed Loop System ◽  
Free Living ◽  
And Performance ◽  
Free Living Conditions
Sign in / Sign up

Export Citation Format

Share Document