A structural tailored piezo actuated cantilever shaped 2-DOF resonators for viscosity and density sensing in liquids

Sathiya, S.; Vasuki, B.

doi:10.1016/j.sna.2016.05.052

Cited by 9 publications

(6 citation statements)

References 30 publications

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“…This describes the changes in the endpoints of the bi-unstable range in the root loci of Figure 4c-e. Furthermore, γ = γ pb , which is the limit condition in Figure 4b, is obtained from Equations (19) and (20) and is shown with the black dashed line. The parameter values are the same as those of Figure 4.…”

Section: Summary Of the Proposed Methodsmentioning

confidence: 99%

“…23and (24). The black dashed line denotes the boundary value that produces the multiple eigenvalues in Figure 4b obtained by solving Equations (19) and (20). The blue and red dashed lines show the control parameters, Equations (23) and 24, respectively, and the black line shows their difference.…”

Section: Summary Of the Proposed Methodsmentioning

confidence: 99%

“…where subscript ' pb ' denotes the parameter values that produce the multiple complex conjugate eigenvalues. When the parameters δ f f and γ satisfy Equations (19) and (20), the multiple complex conjugate eigenvalues appear as shown in Figure 4b. If the viscosity γ is greater than the boundary value γ pb , the eigenvalues of one mode become always unstable; the root locus in this situation is shown in Figure 4a.…”

Section: Condition For the Multiple Eigenvaluesmentioning

confidence: 99%

“…The most basic method is based on the frequency response under external forcing, which uses the fact that a higher viscous environment blunts the shape of the resonator's frequency response curve. This method detects viscosities from the quantitative change in the peak frequency or the quality factor [15][16][17][18][19]. The quality factor, or Q-value, indicates the sharpness of the curve.…”

Section: Introductionmentioning

confidence: 99%

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Sensorless Self-Excited Vibrational Viscometer with Two Hopf Bifurcations Based on a Piezoelectric Device

Urasaki

Yabuno

Yamamoto

et al. 2021

Sensors

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In this study, we propose a high-sensitivity sensorless viscometer based on a piezoelectric device. Viscosity is an essential parameter frequently used in many fields. The vibration type viscometer based on self-excited oscillation generally requires displacement sensor although they can measure high viscosity without deterioration of sensitivity. The proposed viscometer utilizes the sensorless self-excited oscillation without any detection of the displacement of the cantilever, which uses the interaction between the mechanical dynamics of the cantilever and the electrical dynamics of the piezoelectric device attached to the cantilever. Since the proposed viscometer has fourth-order dynamics and two coupled oscillator systems, the systems can produce different self-excited oscillations through different Hopf bifurcations. We theoretically showed that the response frequency jumps at the two Hopf bifurcation points and this distance between them depends on the viscosity. Using this distance makes measurement highly sensitive and easier because the jump in the response frequency can be easily detected. We experimentally demonstrate the efficiency of the proposed sensorless viscometer by a macro-scale measurement system. The results show the sensitivity of the proposed method is higher than that of the previous method based on self-excited oscillation with a displacement sensor.

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Section: Summary Of the Proposed Methodsmentioning

confidence: 99%

Section: Summary Of the Proposed Methodsmentioning

confidence: 99%

Section: Condition For the Multiple Eigenvaluesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Sensorless Self-Excited Vibrational Viscometer with Two Hopf Bifurcations Based on a Piezoelectric Device

Urasaki

Yabuno

Yamamoto

et al. 2021

Sensors

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“…[9][10][11] Furthermore, the addition of a piezoelectric layer has also been reported as being an effective means of obtaining high-quality sensors. 12,13) From these reports, it can be deduced that the development of technology that can further improve or customize the structure of the hollow part would be important in the future. However, it is expected that a large number of sensors will be produced in the near future, 14) and will serve as a foundation for enhancing safety and convenience in our daily lives.…”

Section: Introductionmentioning

confidence: 99%

Improved process for forming a three-dimensional undersurface on a printed cantilever

Kanazawa

Kusaka

Yamamoto

et al. 2018

Jpn. J. Appl. Phys.

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An improvement in the lift-on offset printing process is reported as a means of enabling the structural customization of hollow structures used as moving parts of sensors and actuators. The improved process can add structures to the underside of a hollow structure by modifying the preparation of the pre-structure. As a demonstration, the mechanical displacement of a cantilever in a gravitational acceleration sensor was enhanced by the addition of a proof mass. The improved process can be expected to further produce functionalized hollow structures by an efficient manufacturing process.

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Online Estimation of Liquid Viscosity and Density Based on Artificial Neural Network Approach

Sathiya

Sikander

2020

Advances in Intelligent Systems and Computing

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A structural tailored piezo actuated cantilever shaped 2-DOF resonators for viscosity and density sensing in liquids

Cited by 9 publications

References 30 publications

Sensorless Self-Excited Vibrational Viscometer with Two Hopf Bifurcations Based on a Piezoelectric Device

Sensorless Self-Excited Vibrational Viscometer with Two Hopf Bifurcations Based on a Piezoelectric Device

Improved process for forming a three-dimensional undersurface on a printed cantilever

Online Estimation of Liquid Viscosity and Density Based on Artificial Neural Network Approach

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