Transactions of the Korean Society of Mechanical Engineers A (대한기계학회논문집A)

The Korean Society of Mechanical Engineers (대한기계학회)
권호 표지
DOI QR코드

DOI QR Code

Modal Analysis and Velocity Control of Bowl Parts Feeder Activated by Piezoactuators

압전작동기로 구동 되는 보울 파트 피더의 모드 해석과 이송 속도 제어

  • Published : 2000.04.01
Download PDF
⟨ Previous Next ⟩

Abstract

This paper presents modal analysis and mean conveying velocity (M.C.V.) control of bowl parts feeder activated by piezoactuators. Bowl parts feeders are being widely used in many industry fields for automatic assembly line. In general, the electromagnet has been and being used as exciting actuator of these vibratory bowl feeders. However, because of complexity of its mechanism and limited capability of the electromagnet actuator, there exist various impending problems such as severe noise, nonlinear motion of parts, passive characteristics and so forth. As one of solutions for these problems, piezoelectric actuators as new actuating technology have been proposed recently to excite the bowl parts feeder. In this paper, modal analysis of the proposed model has been performed to examine the modal characteristics of the model by using commercial FEM software and modeling with respects to MCV is constructed. Finally, MCV of the parts is to be controlled to track the desired one with PID controller.

Keywords

References

  1. 심수섭, 1991, '자동조립기술,' pp. 227-270
  2. Boothroyd, G., Poli, C., and Murch, L.E., 1982, Automatic Assembly, Dekker, New York
  3. Choi, S.B. and Lee, C.H., 1997, 'Force Tracking Control of a Flexible Gripper Driven by a Piezoceramic Actuator,' ASME J. of Dynamic Systems, Measurements and Control, Vol. 119, No.3, pp. 439-446
  4. Anon., 1988, 'IEEE Standard on Piezoelectricity,' American National Standards Inst/Inst. Of Electrical and Electronics Engineers, ANSI/IEEE Std. Inst. Of Electrical and Electronics Engineers, New York
  5. Allik, J. and Hughes, T.Jr., 1970, 'Finite Element Method for Piezoelectric Vibration,' Int. J. Numer. Methods Eng. Vol. 2, pp. 151-157 https://doi.org/10.1002/nme.1620020202
  6. Kim, J.W., Varadan, V.V.and Varadan, V.K., 1995, 'Finite Element-Optimization Methods for the Active Control of Radiated Sound From a Plate Structure,' J. Smart Mater. Struc. pp. 318-326 https://doi.org/10.1088/0964-1726/4/4/012
  7. Auld, B.A., 1990, Acoustic Fields and Waves in Solid, Vol. 1, 265-356
  8. Lim, G.H., 1997, 'On the Conveying Velocity of a Vibratory Feeder,' Computers and Structures, Vol. 62, No. 1, pp. 197-203 https://doi.org/10.1016/S0045-7949(96)00223-4
  9. Shahian, B. and Hassul, M., 1993, Control System Design using Matlab, Prentice-Hall International Inc.