A variety of applications using ultrasonic transducer is operating at high power in a low frequency range in industry. The resonance frequency shift and electrical impedance change is a common phenomenon in the application of high-power ultrasonic transducer. In order to achieve a stable or consistent results, it is important to track the resonance frequency. To solve these problems, various electrical methods have been described to track the operating frequency. This paper proposes ultrasonic transducer drive system and a simple digital control algorithm for sonicating aluminum alloy. The ultrasound transducer drive system is implemented to verify the proposed digital control algorithm. The proposed digital control algorithm is applied to a 3 kW prototype ultrasound transducer drive system, and the experimental results are analyzed and verified.
[1]
Dong,et al.
Automatic stabilization of velocity for ultrasonic vibration system
,
2001
.
[2]
Faa-Jeng Lin,et al.
An ultrasonic motor drive using LLCC resonant technique
,
1999,
30th Annual IEEE Power Electronics Specialists Conference. Record. (Cat. No.99CH36321).
[3]
Juan A. Gallego-Juárez,et al.
Automatic system for dynamic control of resonance in high power and high Q ultrasonic transducers
,
1985
.
[4]
C. Gokcek,et al.
Tracking the resonance frequency of a series RLC circuit using a phase locked loop
,
2003,
Proceedings of 2003 IEEE Conference on Control Applications, 2003. CCA 2003..