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Citation Information : International Journal on Smart Sensing and Intelligent Systems. Volume 4, Issue 2, Pages 205-223, DOI: https://doi.org/10.21307/ijssis-2017-436
License : (CC BY-NC-ND 4.0)
Received Date : 02-April-2011 / Accepted: 23-May-2011 / Published Online: 01-June-2011
A novel ultrasonic dispersion system for the dispersing of particles which are mixed in liquid has been proposed in this paper. The frequency of produced ultrasonic wave varies from 30 kHz to 60 kHz with 100 Hz steps. It means that the operating frequency band of designed system is 30 kHz. The maximum and optimum energy of ultrasonic wave can be transfer inside the liquid container with the high efficiency in majority of operating time by the use of some facilities which are implemented in our novel system, so it causes one of the superiority of manufactured system in compare with the other similar systems which are available in markets. Ultrasonic transducers which are used in this system as the generator of ultrasonic wave is the type of air coupled ceramic ultrasonic piezoelectric with the nominal maximum power 50 watt. By the considering of frequency diagram of applied piezoelectric, it can be find out that the piezoelectrics produce the maximum amplitude of ultrasonic wave on their resonance frequency, so this system is designed to work on resonance frequency of piezoelectric, continuously. This is done by the use of control system which is consisted of two major parts, sensing part and controlling part. A Hall Effect current sensor is used as the sensing part and the controlling program is implemented on AVR microcontrollers. In addition, the control algorithm of program is presented in this paper. The manufactured ultrasonic dispersion system has been consisted of 9 piezoelectrics so that it can produce 450 watt ultrasonic energy, totally.
 L.Thompson, L. Doraiswamy. Sonochemistry: science and engineering, Industrial and Engineering Chemistry Research 38 (4), 1215-1249, 1999.
 M.Yakut, A.Tangel, C.Tangel, “A microcontroller based generator design for ultrasonic cleaning machines” journal of electrical & electronics engineering , volume 9, pp.853-860 (2009)
 C. Buasri, A. Jangwanitlert, “Comparison of switching strategies for an ultrasonic cleaner”, 5th International Conference on Electrical Engineering / Electronics, Computer, Telecommunications and Information Technology, ECTI-CON pp. 1005-1008 (2008).
 A.Jangwanitlert, P.Paisuwana and T.Vijaktakul, “Ultrasonic cleaner” proc, in EECON 22,Kasetsart University, Vol 22,2542 (1999).
 Ramos A., Emeteriao J. L. S, “Improvement in transient piezoelectric responses of NDE transceivers using selective damping and tuning networks”, IEEE transactions on ultrasonics ferroelectrics and frequency control. Vol 47. No 4. P. 826-835 (2000).
 H. Kifune, Y. Hatanaka and M. Nakaoka, “Cost effective phase shifted pulse modulation soft switching high frequency inverter for induction heating applications”, Proc. IEE Electrical Power Appl. Vol. 151, pp. 19-25 (2004).
 L. Svilainis, G.Motiejunas, “Power amplifier fr ultrasonic transducer excitatin” ULTRAGARSAS, Nr.1 (58), pp. 30-36, (2006).
 T.Suzuki, H.Ikeda, Y.Mizutani, T.Nakabori, Y.Ichioka, H.Yoshida, K.Honda, T.Miyamoto, and S.Sano, “Full-Bridged MOS-FET DC-to-RF Inverter for High Frequency Ultrasonic Transducer at 3 MHz”, IEEE ISIE’95, pp.232-236 (1995).
 H. Fujita and H. Akagi, “Control and Performance of a Pulse-Density Modulated Series-Resonant Inverter for Corona Discharge Processes”, IEEE Trans. on Industry Application, Vol. 35, pp. 621-627 (1999).
 J. Ishikawa, Y. Mizutani, T. Suzuki, H. Ikeda, H. Yoshida, “High-frequency drivepower and frequency control for ultrasonic transducer operating at 3 MHz”, Industry Applications Conference, 1997. 32. IAS Annual Meeting, IAS '97,Vol. 2, pp. 900-905, (1997).
 Domarkas V., Ka.ys R.-J.” Piezoelectric transducers for measuring devices”. Vilnius: Mintis P. 255 (1975).
 P. Fabijanski, R. Lagoda, “Series resonant converter with sandwich-type piezoelectric ceramic transducers”, Proceedings of IEEE International Conference on Industrial Technology (ICIT '96), pp. 252-256, (1996).
 Le Locle, “Piezoelectric Converters Modeling and Characterization” published by M.P. Interconsulting, E-book, 266 pages, August (2004).
 M. H. Fazalul Rahiman, R.Abdul Rahim, J. Pusppanathan, “Two-Phase Flow Regime Identification by UltrasonicComputerized Tomography” Sensors & Transducers Journal, Vol. 116, Issue 5, May 2010, pp. 76-82.
 A. Kannath and R. J. Dewhurst, “Real-time measurement of acoustic field displacements using ultrasonic interferometry,” Meas. Sci. Technol., vol. 15, pp. 59–66, 2004.
 M. L. Sanderson and H. Yeung, “Guidelines for the use of ultrasonic non-invasive metering technique,” Flow Meas. Instrum., vol. 13, pp. 125–142, 2002.