Chirp-based impedance spectroscopy of piezo-sensors

Saar, T.; Märtens, Olev; Reidla, M.; Ronk, A.

doi:10.1109/bec.2010.5630656

Cited by 6 publications

(6 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The second involves using measurement devices such as impedance or network analysers [3,4]. The final approach, applies excitation signals which cover a wide range of frequencies [3,4,9,10]. Considering the mentioned features, a broad-band excitation signal is the most appropriate candidate [21].…”

Section: Introductionmentioning

confidence: 99%

“…In the last few years, a variety of approaches have been introduced for obtaining piezoelectric impedance characteristics [1,2,[4][5][6][7][8][9][10]. A knowledge of such impedance characteristics is important for, structural health monitoring [10,11] and for electrical circuit modelling [6,8] of the piezoelectric devices. In the case of high power applications, knowledge of the impedance characteristics is important so that maximum transmission performance can be achieved [5,[12][13][14].…”

Section: Introductionmentioning

confidence: 99%

“…As the figure shows, piezoelectric devices typically have two kinds of electrical resonances, the first one known as resonant frequency (f r ) and the other one known as anti-resonant frequency (f a ) [3]. In the last few years, a variety of approaches have been introduced for obtaining piezoelectric impedance characteristics [1,2,[4][5][6][7][8][9][10]. A knowledge of such impedance characteristics is important for, structural health monitoring [10,11] and for electrical circuit modelling [6,8] of the piezoelectric devices.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Power converters design and analysis for high power piezoelectric ultrasonic transducers

Ghasemi

Zare

2014

2014 16th European Conference on Power Electronics and Applications

View full text Add to dashboard Cite

High power piezoelectric ultrasonic transducers have been widely exploited in a variety of applications. The critical behaviour of a piezoelectric device is encapsulated in its resonant frequencies because of its maximum transmission performance at these frequencies. Therefore power electronic converters should be tuned at those resonant frequencies to transfer electrical power to mechanical power efficiently. However, structural and environmental changes cause variations in the device resonant frequencies which can degrade the system performance. Hence, estimating the device resonant frequencies within the incorporated setup can significantly improve the system performance. This paper proposes an efficient resonant frequency estimation approach to maintain the performance of high power ultrasonic applications using the employed power converter. Experimental validations indicate the effectiveness of the proposed method.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Power converters design and analysis for high power piezoelectric ultrasonic transducers

Ghasemi

Zare

2014

2014 16th European Conference on Power Electronics and Applications

View full text Add to dashboard Cite

show abstract

“…In paper [8] a novel approach of excitation with chirp signal with simple time-domain analysis of response signal for such task was introduced and described with examples of measurement of the electro-mechanical impedance of piezosensors, in the frequency range of several hundred kilohertz. In one approach smoothed separately (by Savitzky-Golay filter) of excitation voltage and (current) response signals in a sliding window were found and their ratio was used for impedance module estimation, at corresponding time and frequency values.…”

Section: Previous Workmentioning

confidence: 99%

“…Full period rectifier with low pass filter Ti TINA simulation results at 600 kHz Based on previous work[8] linear chirp signal was used for…”

mentioning

confidence: 99%