Effect of hyperthermal cryogenic environments on the performance of piezoelectric transducer

Wang, Tongzhao; Quan, Qiquan; Tang, Dewei; Zheng, Yang; Ji, Huang; Guo, Fangwei; Meng, Liang; Zhao, Zhijun; Deng, Zongquan

doi:10.1016/j.applthermaleng.2021.116725

Cited by 14 publications

(1 citation statement)

References 36 publications

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“…The stability of the piezoelectric transducer operation is strongly influenced by the temperature and load characteristics. The resonant frequency decreases as the temperature rises over time [24]. Moreover, the resonant frequency can also be affected due to changes in the load characteristics [25].…”

Section: The Extraction Of 𝑓mentioning

confidence: 99%

Push–Pull Inverter Using Amplitude Control and Frequency Tracking for Piezoelectric Transducers

Hu,

Yang,

Zhu

et al. 2023

Micromachines

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Frequency tracking and amplitude control are essential for piezoelectric transducers. Frequency tracking ensures the piezoelectric transducer operates at the resonant frequency for maximum power output, and amplitude control regulates the mechanical motion of the output. This paper presents a novel driver based on a push–pull inverter for piezoelectric transducers. The proposed driver realizes the frequency tracking and amplitude control scheme by a voltage sensing bridge in the case of transformer secondary matching, guaranteeing automatic frequency tracking and precise mechanical functions regardless of environmental and load variations. The proposed scheme is verified by the ultrasonic scalpel and the ultrasonic motor (USM). The experimental results show that this scheme reduces the build-up time from 10 ms to 3 ms and loaded frequency variations from 250 Hz to 200 Hz. In addition, the amplitude control performance was further observed on USM for various loads. The overshoot is less than 5.4% under different load torques. Therefore, the proposed scheme improves the load adaptability and stability of piezoelectric transducers and promotes the application of piezoelectric transducers under various conditions.

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Section: The Extraction Of 𝑓mentioning

confidence: 99%

Push–Pull Inverter Using Amplitude Control and Frequency Tracking for Piezoelectric Transducers

Hu,

Yang,

Zhu

et al. 2023

Micromachines

View full text Add to dashboard Cite

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Design and Performance Study of an Ultrasonic Bone Scalpel with Composite Horn Structure

Yang

et al. 2023

Nanomanuf Metrol

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The ultrasonic bone scalpel was often used in all kinds of clinical orthopedic surgery as a new type of medical instrument. Based on the working theory of the ultrasonic bone scalpel and combined with the design method of a quarter wavelength transducer and horn, this study proposed an optimization design method for the ultrasonic bone scalpel with a composite horn structure. The structure of the ultrasonic bone scalpel was simplified, and its length was shortened. Finite element analysis, modal analysis, and harmonic response analysis were used to optimize the design of the ultrasonic bone scalpel. The performance of the ultrasonic bone scalpel was explored through impedance analysis, amplitude measurement, temperature measurement, and cutting tests, and the feasibility of the design was verified through torque analysis. The results showed that when the torque force was 4.0 N, the resonance frequency of the ultrasonic bone scalpel was 30,540 Hz, and the maximum amplitude of the ultrasonic bone scalpel could reach 62 μm. After spray cooling, the maximum surface temperature of the rear end cover was reduced from 51.8 to 36.3 ℃, the maximum surface temperature of the composite horn was reduced from 71 to 45.3 ℃, and the maximum surface temperature of the cutter head was reduced from 101 to 46.1 ℃, demonstrating a good cooling effect. Under 89 Voltage, the optimal cutting force for cutting chicken leg bones was 0.1 N, the optimal cutting force for cutting pork ribs was 0.3 N, and the cutting process showed tissue selectivity.

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Hill-climbing & fuzzy combined control algorithm for a percussive ultrasonic drill

et al. 2023

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Effect of hyperthermal cryogenic environments on the performance of piezoelectric transducer

Cited by 14 publications

References 36 publications

Push–Pull Inverter Using Amplitude Control and Frequency Tracking for Piezoelectric Transducers

Push–Pull Inverter Using Amplitude Control and Frequency Tracking for Piezoelectric Transducers

Design and Performance Study of an Ultrasonic Bone Scalpel with Composite Horn Structure

Hill-climbing & fuzzy combined control algorithm for a percussive ultrasonic drill

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