The performance of artmap in pattern recognition for a flexible vibratory bowl feeder system

2005 ◽  
Author(s):  
Siang Kok Sim ◽  
P.S.K. Chua ◽  
Meng Leong Tay ◽  
Gao Yun
Keyword(s):  
Pattern Recognition ◽  
Bowl Feeder ◽  
Vibratory Bowl Feeder

Recognition of features of parts subjected to motion using ARTMAP incorporated in a flexible vibratory bowl feeder system

2006 ◽  
Vol 20 (1) ◽  
pp. 19-34 ◽  
Author(s):  
S.K. SIM ◽  
PATRICK S.K. CHUA ◽  
M.L. TAY ◽  
YUN GAO
Keyword(s):  
Pattern Recognition ◽  
Data Acquisition ◽  
Manufacturing Systems ◽  
Sampling Rate ◽  
Data Acquisition System ◽  
Acquisition System ◽  
Test Bed ◽  
Bowl Feeder ◽  
Vibratory Bowl Feeder ◽  
Recognition Capability

The recognition and identification of parts are important processes in modern manufacturing systems. Although machine vision systems have played an important role in these tasks, there are still challenges in performing these tasks in which parts may be in motion and subjected to noise. Using a flexible vibratory bowl feeder system as a test bed to simulate motion of parts subjected to noise, scanned signatures of part features are acquired using fiber optic sensors and a data acquisition system. Because neural networks have been shown to exhibit good pattern recognition capability, ARTMAP, a neural network that learns patterns under supervision, was incorporated into the feeder system. The pattern recognition capability of the feeder system is dependent on a set of parameters that characterized ARTMAP, the sampling rate of the data acquisition system, and the mean speed of the vibrating parts. The parameters that characterized ARTMAP are the size of an input vector, the vigilance, threshold value of the nonlinear noise suppression function, and the learning rate. Through extensive training and testing of the ARTMAP within the feeder system, it was shown that high success rates of recognition of parts features in motion under noisy conditions can be obtained provided these parameters of ARTMAP are appropriately selected.

NEW ALTERNATIVES TO THE VIBRATORY BOWL FEEDER

1991 ◽  
Vol 11 (4) ◽  
pp. 14-16
Author(s):  
Anna Kochan
Keyword(s):  
Bowl Feeder ◽  
Vibratory Bowl Feeder

Vibratory Feeding

1967 ◽  
Vol 182 (1) ◽  
pp. 135-152 ◽  
Author(s):  
A. H. Redford ◽  
G. Boothroyd
Keyword(s):  
Phase Difference ◽  
Experimental Tests ◽  
Harmonic Motion ◽  
Fundamental Limitations ◽  
Wide Range ◽  
Theoretical Predictions ◽  
The Coefficient Of Friction ◽  
Bowl Feeder ◽  
Vibratory Bowl Feeder ◽  
Vibratory Feeding

A brief review of previous work on the mechanics of vibratory conveying is presented followed by a new theoretical analysis of vibratory feeding on a track which vibrates with simple harmonic motion and where a phase difference may exist between the parallel and normal components of the track motion. For a wide range of practical conditions, the theoretical predictions are found to agree closely with the results of experimental tests. These show that certain fundamental limitations exist in the performance of conventional feeder drives where the two components of track motion are in-phase. From further theoretical and experimental work, it is shown that under conditions where the appropriate phase difference exists between the two components of track motion, many practical advantages over conventional vibratory feeding are obtained. With a new design of vibratory bowl feeder drive based on the results of the work, significantly higher conveying velocities may be obtained under stable feeding conditions and, further, these high conveying velocities are virtually independent of the coefficient of friction between the component and the track. The results of the present work apply equally to the design of spiral elevators and in-line vibratory feeders.

Performance of an Orienting Device Employed in Vibratory Bowl Feeders

1970 ◽  
Vol 92 (3) ◽  
pp. 694-698 ◽  
Author(s):  
G. Boothroyd ◽  
L. E. Murch
Keyword(s):  
Statistical Analysis ◽  
Experimental Tests ◽  
Trial And Error ◽  
Bowl Feeder ◽  
Vibratory Bowl Feeder ◽  
Percent Efficiency

A statistical analysis of the performance of a vee cutout orienting device used in a vibratory bowl feeder is presented. The results of experimental tests are described and compared with the analysis. From the information thus obtained it is possible to design and build such a device without the need for trial and error procedures and to obtain 100 percent efficiency.

Experimental Study of the Behavior of Certain Connectors in a Vibratory Bowl Feeder

1997 ◽  
Author(s):  
Lourdes M. Rosario ◽  
José D. Hernández-Coronas
Keyword(s):  
Computer Aided Design ◽  
Vibration Amplitude ◽  
Mass Properties ◽  
Series Of Experiments ◽  
Feeder Design ◽  
Bowl Feeder ◽  
Vibratory Bowl Feeder ◽  
Aided Design ◽  
Near Future ◽  
Complex Parts

Abstract The design and implementation of vibratory bowl feeders involves the analysis of the behavior of the parts as they are conveyed up the bowl track. This paper presents the results obtained in a series of experiments which study the effect of the vibration amplitude in the feeder on the dynamic orientations of a family of parts. The objective of the study is to investigate how complex parts behave in a vibratory bowl feeder and try to establish a relationship between the orientation of the parts and the vibration amplitude of the bowl feeder. The study consisted of experimenting with four types of connectors that were similar in shape but differ in proportions. By experimenting with a part family, we intend to establish and generalize in the near future a relationship between the tendency of the parts to fall in certain orientations, the amplitude of vibration in the feeder, and geometric features or mass properties. The acquired knowledge could then be incorporated in computer aided design programs, together with existing theory on feeder design, to specify orientation devices and operating parameters in the vibratory bowl feeder.

Approximation to the dynamics of transported parts in a vibratory bowl feeder

2009 ◽  
Vol 44 (12) ◽  
pp. 2217-2235 ◽  
Author(s):  
J.A. Vilán Vilán ◽  
A. Segade Robleda ◽  
P.J. García Nieto ◽  
C. Casqueiro Placer
Keyword(s):  
Bowl Feeder ◽  
Vibratory Bowl Feeder

Design and Study on the Automatic Extrusion Device for Curved Chassis of Vibratory Feeder

2012 ◽  
Vol 198-199 ◽  
pp. 1298-1301
Author(s):  
Liang Han ◽  
Jia Li ◽  
Lei Xiang Zhang
Keyword(s):  
Hydraulic System ◽  
Experimental Studies ◽  
Control Unit ◽  
Control Technology ◽  
Proportional Control ◽  
Vibratory Feeder ◽  
Potential Benefits ◽  
Bowl Feeder ◽  
Vibratory Bowl Feeder ◽  
Micro Control Unit

Vibratory feeder is a device which is used to arrange small workpieces in neat rows and convey them from one place to another by vibratory feeding. It has been playing a key role in automation production. According to manufacturing equipments for the chassis of vibratory bowl feeder, this paper makes studies mainly in the followings: (1) introduces the principle of the vibratory feeder briefly, (2) the mechanical structure of the automatic extrusion device for curved chassis of vibratory feeder is designed, including frame, moulds and guiding mechanism, (3) static analysis, mould stress analysis are done by using the finite software ANSYS, (4) based on the electro-hydraulic proportional control technology, a hydraulic system is designed, (5) a control system based on STC89C52RC MCU(Micro Control Unit) is given. The problems of automatic extrusion for the curved chassis of vibratory feeder are successfully solved through the theoretical and experimental studies, which achieves the expected design goals and fills in a gap in this field in China, which brings great economic and social potential benefits and has wide application prospect.

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