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Keywords: Control
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Journal Articles
Article Type: Review Articles
J. Manuf. Sci. Eng. November 2020, 142(11): 110816.
Paper No: MANU-20-1083
Published Online: September 29, 2020
...) design that uses models to predict the result from a given set of welding parameters and minimizes a cost function for optimizing the welding parameters; and (3) real-time sensing and control that overcome the deviations of welding conditions from their nominal ones used in optimizing the welding...
Journal Articles
Article Type: Research-Article
J. Manuf. Sci. Eng. December 2018, 140(12): 121003.
Paper No: MANU-18-1384
Published Online: September 17, 2018
... especially under varying cutting conditions. This paper proposes a closed-loop SSV cutting system to suppress chatter in turning. The dimensionless SSV amplitude is adaptively adjusted with a model-free controller to accommodate change of the chatter level. The wavelet packet entropy (WPE) is computed online...
Journal Articles
Article Type: Research-Article
J. Manuf. Sci. Eng. November 2018, 140(11): 111012.
Paper No: MANU-18-1085
Published Online: August 31, 2018
... of the sound measurements. Kuljanic [ 3 ] tried various sensors for chatter detection using statistical methods, and recommended that cutting torque sensing would be favorable. Recently, sensorless methods using the computer numerical control signals such as spindle motor current, and spindle speed have...
Journal Articles
Article Type: Research-Article
J. Manuf. Sci. Eng. November 2018, 140(11): 111016.
Paper No: MANU-18-1256
Published Online: August 31, 2018
... magnetic table are modified in real time to compensate for the tooltip deviation using a gradient descent algorithm. The algorithm is simulated and verified experimentally on the nine-axis micromill controlled by an in-house developed virtual/real-time open computer numerical controlled (CNC) system...
Journal Articles
Article Type: Research-Article
J. Manuf. Sci. Eng. October 2018, 140(10): 101009.
Paper No: MANU-17-1575
Published Online: July 27, 2018
... to an equivalent percentage increase in hatch spacing, and tenfold increase compared to scan velocity. Hence, the control of laser power is most consequential for avoiding porosity. (2) Online visible spectrum images of the part were acquired as they are built using a still camera. These images were analyzed...
Journal Articles
Article Type: Research-Article
J. Manuf. Sci. Eng. October 2018, 140(10): 101005.
Paper No: MANU-17-1812
Published Online: July 9, 2018
...Tao Huang; Lijun Zhu; Shengli Du; Zhiyong Chen; Han Ding Milling chatters caused by the regenerative effect is one of the major limitations in increasing the machining efficiency and accuracy of milling operations. This paper studies robust active chatter control for milling processes with variable...
Journal Articles
Article Type: Research-Article
J. Manuf. Sci. Eng. September 2018, 140(9): 091013.
Paper No: MANU-17-1545
Published Online: July 5, 2018
...Brandon P. Smith; Mahdi Ashrafi; Mark E. Tuttle; Santosh Devasia This paper investigates an out-of-autoclave (OoA), embedded-resistive heating method to precisely control the bondline temperature when curing high strength adhesives for joining composite adherends. A challenge with OoA methods...
Journal Articles
Article Type: Research-Article
J. Manuf. Sci. Eng. August 2018, 140(8): 081011.
Paper No: MANU-17-1697
Published Online: June 4, 2018
... can determine the optimal sets of process parameters from the main effects plot for S/N ratio shown in Fig. 11 . Analysis of variance (ANOVA) is a computational technique to estimate the relative contribution of each controlled parameter to the overall response quantitatively and is expressed...
Journal Articles
Article Type: Research-Article
J. Manuf. Sci. Eng. August 2018, 140(8): 081001.
Paper No: MANU-17-1510
Published Online: May 21, 2018
...Lawrence W. Funke; James P. Schmiedeler Parts made via polymer extrusion are currently limited to a constant cross section. Additionally, the process is difficult to control, so desired final part dimensions are often achieved via a manual trial-and-error approach to parameter adjustment. This work...
Journal Articles
Article Type: Research-Article
J. Manuf. Sci. Eng. July 2018, 140(7): 071004.
Paper No: MANU-17-1330
Published Online: April 6, 2018
... 2017 12 02 2018 Control Modeling and simulation Sensors Sensing Monitoring Automation Diagnostics Vacuum arc remelting (VAR), is the metallurgical process of remelting metal ingots with the application of a direct current into the system, in a vacuum environment. The result...
Journal Articles
Article Type: Research-Article
J. Manuf. Sci. Eng. May 2018, 140(5): 051005.
Paper No: MANU-17-1007
Published Online: March 6, 2018
... governing equation allows (1) analysis of web transported through heating/cooling sections and (2) the control system designed to test the robustness of controllers applied to web handling processes by addressing viscoelastic and thermal effects on web tension. To evaluate the developed model...
Journal Articles
Article Type: Research-Article
J. Manuf. Sci. Eng. May 2018, 140(5): 051004.
Paper No: MANU-17-1550
Published Online: March 1, 2018
...Qin Hu; Youping Chen; Jixiang Yang; Dailin Zhang Linear motion commands of multi-axis computer numerical control (CNC) machine tools need to be smoothed at the transition corners, because the velocity discontinuities at corners can result in fluctuations on machine tool motions and lead to poor...
Journal Articles
Article Type: Research-Article
J. Manuf. Sci. Eng. April 2018, 140(4): 041017.
Paper No: MANU-17-1157
Published Online: February 15, 2018
...Xiaowei Yue; Yuchen Wen; Jeffrey H. Hunt; Jianjun Shi Shape control of composite parts is vital for large-scale production and integration of composite materials in the aerospace industry. The current industry practice of shape control uses passive manual metrology. This has three major limitations...
Journal Articles
Article Type: Technical Briefs
J. Manuf. Sci. Eng. April 2018, 140(4): 044501.
Paper No: MANU-17-1367
Published Online: February 14, 2018
... chatter vibration, an unequal pitch turning method was proposed. In this method, the upper tool was controlled based on the optimum pitch angle calculated from spindle speed and chatter frequency. Chatter frequency was identified from estimated cutting force by a disturbance observer (DOB). From...
Journal Articles
Article Type: Research-Article
J. Manuf. Sci. Eng. April 2018, 140(4): 041012.
Paper No: MANU-17-1371
Published Online: February 13, 2018
... programmability in conventional toolpath planning approach in machining leads to significantly higher manufacturing cost for direct computer numerical control (CNC)-based prototyping (i.e., subtractive 3D printing). In standard computer-aided manufacturing (CAM) packages, general use of B-rep (boundary...
Journal Articles
Article Type: Research-Article
J. Manuf. Sci. Eng. March 2018, 140(3): 031014.
Paper No: MANU-17-1444
Published Online: January 3, 2018
..., provide an opportunity to overcome such challenges. However, little has been done to fully utilize the image profiles acquired in the AM process and study the fractal patterns for the purpose of process monitoring, quality assessment, and control. This paper presents a new multifractal methodology...
Journal Articles
Article Type: Research-Article
J. Manuf. Sci. Eng. February 2018, 140(2): 021010.
Paper No: MANU-17-1215
Published Online: December 18, 2017
... 2017 24 07 2017 Control Machining processes Sensing Monitoring Automation Diagnostics Tool failure is a complex phenomenon that involves one or more failure modes, namely, excessive wear, brittle fracture (chipping), and breakage [ 1 , 2 ]. Tool life estimation via analytical...
Journal Articles
Article Type: Research-Article
J. Manuf. Sci. Eng. February 2018, 140(2): 021012.
Paper No: MANU-17-1279
Published Online: December 18, 2017
... Government retains, a nonexclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this work, or allow others to do so, for United States government purposes. 24 04 2017 28 06 2017 Materials processing Control Machine tool dynamics Metrology...
Journal Articles
Article Type: Research-Article
J. Manuf. Sci. Eng. February 2018, 140(2): 021003.
Paper No: MANU-17-1105
Published Online: December 18, 2017
... algorithm developed in this paper. 1 Corresponding author. Manuscript received February 18, 2017; final manuscript received June 8, 2017; published online December 18, 2017. Assoc. Editor: Tony Schmitz. 18 02 2017 08 06 2017 Additive manufacturing Control CAE CAM CAD...
Journal Articles
Article Type: Research-Article
J. Manuf. Sci. Eng. January 2018, 140(1): 011016.
Paper No: MANU-17-1298
Published Online: November 21, 2017
... manuscript received August 4, 2017; published online November 21, 2017. Assoc. Editor: Karl R. Haapala. 01 05 2017 04 08 2017 Assembly Control Automation In the past few decades, the increasing concern of the environment by the government, industries, and public has led...