A New Approach for Piezoelectric Switched Shunt Damping on Inductance

2015 ◽  
Author(s):  
Keisuke Kamiya
Keyword(s):  
High Performance ◽  
Vibration Suppression ◽  
Piezoelectric Element ◽  
Open Circuit ◽  
New Approach ◽  
Piezoelectric Elements ◽  
In Series ◽  
Shunt Damping ◽  
Piezoelectric Shunt ◽  
Shunt Circuit

A technique to suppress vibration using piezoelectric elements connected to a shunt circuit is called piezoelectric shunt damping. Many studies on this subject have been reported. Among them a technique called switched shunt damping exists. In switched shunt damping developed so far, a switch is placed in the shunt circuit in series to the piezoelectric element, and is used to switch the shunt circuit from an open circuit to a closed circuit. Depending on the elements used in the shunt circuit, various types of switched shunt damping exist. This paper presents a new approach for switched shunt damping on inductance. The presented shunt circuit is composed of a resistance, an inductance and a switch connected in parallel with the inductance. Thus, when the switch is open the shunt circuit becomes an LR circuit, and when the switch is closed it becomes a resistive circuit. Furthermore, switching is operated based on the charge on the piezoelectric element, so that no sensors to conduct the switching are needed. To check the performance of vibration suppression by the proposed method, numerical simulations and experiments are conducted. The results show that the presented switched shunt damping have high performance of vibration suppression.

Virtual Piezoelectric Vibration Absorber with LR Parallel Shunt Circuit

2012 ◽  
Vol 479-481 ◽  
pp. 1165-1168
Author(s):  
Ning Li
Keyword(s):  
Environmental Changes ◽  
Vibration Suppression ◽  
Vibration Absorber ◽  
Feedback Structure ◽  
Circuit Component ◽  
Shunt Damping ◽  
Numerical Representations ◽  
Piezoelectric Shunt ◽  
Piezoelectric Vibration ◽  
Shunt Circuit

A virtual piezoelectric vibration absorber with LR Parallel shunt circuit was developed to emulate the effect of a physical piezoelectric shunt damper. A controller was designed and the feedback structure according to the LR parallel shunt circuit was suggested by using the governing equations of piezoelectric shunt damping system. The inductor L and resistor R only “exist” as numerical representations inside the controller. The virtual piezoelectric vibration absorber can both eliminate the need for large inductor and tune circuit component parameters online to adapt to environmental changes. Therefore the two disadvantages of the physical piezoelectric shunt damper are overcome. The simulation results for a cantilever beam show the effectiveness of the Virtual piezoelectric vibration absorber for vibration suppression.

127 On a Piezoelectric Shunt Damping with a Virtual Shunt Circuit Using an Approximate Differentiator

2009 ◽  
Vol 2009 (0) ◽  
pp. _127-1_-_127-6_ ◽  
Author(s):  
Kentaro TAKAGI ◽  
Tsuyoshi INOUE ◽  
Kentaro NAKASHIMA ◽  
Tadao TAKIGAMI
Keyword(s):  
Shunt Damping ◽  
Piezoelectric Shunt ◽  
Shunt Circuit

Application of a Negative Capacitance Circuit in Synchronized Switch Damping Techniques for Vibration Suppression

2011 ◽  
Vol 133 (4) ◽  
Author(s):  
Hongli Ji ◽  
Jinhao Qiu ◽  
Jun Cheng ◽  
Daniel Inman
Keyword(s):  
Composite Beam ◽  
Vibration Suppression ◽  
Piezoelectric Element ◽  
Single Mode ◽  
Resonant Circuit ◽  
Negative Capacitance ◽  
Control Performance ◽  
Damping Effect ◽  
Mode Control ◽  
Shunt Circuit

In the synchronized switching damping (SSD) techniques, the voltage on the piezoelectric element is switched synchronously with the vibration to be controlled using an inductive shunt circuit (SSDI). The inherent capacitance and the inductance in the shunt circuit comprise an electrically resonant circuit. In this study, a negative capacitance is used in the shunt circuit instead of an inductance in the traditional SSD technique. The voltage on the piezoelectric element can be effectively inverted although the equivalent circuit is capacitive and no resonance occurs. In order to investigate the principle of the new SSD method based on a negative capacitance (SSDNC), the variation of the voltage on the piezoelectric element and the current in the circuit are analyzed. Furthermore, the damping effect using the SSDNC is deduced, and the energy balance and stability of the new system are investigated analytically. The method is applied to the single-mode control and two-mode control of a composite beam, and its control performance was confirmed by the experimental results. For the first mode in single-mode control, the SSDNC is much more effective than SSDI. In other cases, the SSDNC is also more effective than the SSDI, although not significantly.

scholarly journals Optimal piezoelectric resistive–inductive shunt damping of plates with residual mode correction

2018 ◽  
Vol 29 (16) ◽  
pp. 3346-3370 ◽  
Author(s):  
Johan F Toftekær ◽  
Ayech Benjeddou ◽  
Jan Høgsberg ◽  
Steen Krenk
Keyword(s):  
Coupling Coefficient ◽  
Electromechanical Coupling ◽  
Vibration Suppression ◽  
Equations Of Motion ◽  
Open Circuit ◽  
Electromechanical Coupling Coefficient ◽  
Inertia Effects ◽  
Resonant Modes ◽  
Calibration Methods ◽  
Shunt Damping

This work concerns vibration suppression of plates and plate-like structures by resonant piezoelectric damping, introduced by resistive–inductive shunts. The performance of this type of shunt damping relies on the precise calibration of the shunt frequency, where an important aspect is the ability to account for the energy spill-over from the non-resonant modes, not taken into account by most available calibration methods. A newly proposed calibration procedure includes this residual mode contribution by a quasi-dynamic modal correction, taking both flexibility and inertia effects of the non-resonant modes into account. In this work, this procedure is implemented in a finite element model combining Kirchhoff plate bending kinematics for the host structure and a plane stress assumption for a pair of bonded piezoceramic patches. The established model is verified by comparison with shunt calibrations from benchmark examples in the literature. As demonstrated by frequency response plots and the obtained damping ratios, the resistive–inductive shunt tuning is influenced by the effect of the non-resonant modes and omission may yield a significant detuning of the shunt circuit. Finally, an alternative method for precise evaluation of the effective (or generalized) electromechanical coupling coefficient is derived from the modal electromechanical equations of motion. This results in a new shunt tuning method, based on the effective electromechanical coupling coefficient obtained by the short- and open-circuit frequencies of the coupled piezo-plate structure.

scholarly journals OPTIMAL PIEZOELECTRIC SHUNT DAMPER USING ENHANCED SYNTHETIC INDUCTOR: SIMULATION AND EXPERIMENTAL VALIDATION

2022 ◽  
Vol 23 (1) ◽  
pp. 424-433
Author(s):  
Muhammad Nazri Suhaimi ◽  
Azni Nabela Wahid ◽  
Nor Hidayati Diyana Nordin ◽  
Khairul Affendy Md Nor
Keyword(s):  
Cantilever Beam ◽  
Mechanical Energy ◽  
Vibration Reduction ◽  
Electrical Energy ◽  
Maximum Energy ◽  
Electrical Circuit ◽  
Structural Vibration ◽  
In Series ◽  
Piezoelectric Shunt ◽  
Shunt Circuit

Piezoelectric material has the ability to convert mechanical energy to electrical energy and vice versa, making it suitable for use as an actuator and sensor. When used as a controller in sensor mode, the piezoelectric transducer is connected to an external electrical circuit where the converted electrical energy will be dissipated through Joule heat; also known as piezoelectric shunt damper (PSD). In this work, a PSD is used to dampen the first resonance of a cantilever beam by connecting its terminal to an RL shunt circuit configured in series. The optimal resistance and inductance values for maximum energy dissipation are determined by matching the parameters to the first resonant frequency of the cantilever beam, where R = 78.28 k? and L = 2.9 kH are found to be the optimal values. To realize the large inductance value, a synthetic inductor is utilized and here, the design is enhanced by introducing a polarized capacitor to avoid impedance mismatch. The mathematical modelling of a cantilever beam attached with a PSD is derived and simulated where 70% vibration reduction is seen in COMSOL. From experimental study, the vibration reduction obtained when using the piezoelectric shunt circuit with enhanced synthetic inductor is found to be 67.4% at 15.2 Hz. Results from this study can be used to improve PSD design for structural vibration control at targeted resonance with obvious peaks. ABSTRAK: Material piezoelektrik mempunyai keupayaan mengubah tenaga mekanikal kepada tenaga elektrik dan sebaliknya, di mana ia sesuai digunakan sebagai penggerak dan pengesan. Apabila digunakan sebagai alat kawalan dalam mod pengesan, piezoelektrik disambung kepada litar elektrik luaran di mana tenaga elektrik yang ditukarkan akan dibebaskan sebagai haba Joule; turut dikenali sebagai peredam alihan piezoelektrik (PSD). Kajian ini menggunakan PSD sebagai peredam resonan pertama pada palang kantilever dengan menyambungkan terminal kepada litar peredam RL bersiri. Rintangan optimal dan nilai aruhan bagi tenaga maksimum yang dibebaskan terhasil dengan membuat padanan parameter pada frekuensi resonan pertama palang kantilever, di mana R = 78.28 k? dan L = 2.9 kH adalah nilai optimum. Bagi merealisasikan nilai aruhan besar, peraruh buatan telah digunakan dan di sini, rekaan ini ditambah baik dengan memperkenalkan peraruh polaris bagi mengelak ketidakpadanan impedans. Model matematik palang kantilever yang bersambung pada PSD telah diterbit dan disimulasi, di mana 70% getaran berkurang pada COMSOL. Hasil dapatan eksperimen ini menunjukkan pengurangan getaran yang terhasil menggunakan litar peredam piezoelektrik bersama peraruh buatan menghasilkan 67.4% pada 15.2 Hz. Hasil dapatan kajian ini dapat digunakan bagi membaiki rekaan PSD berstruktur kawalan getaran iaitu pada resonan tumpuan di puncak ketara.

scholarly journals Enhanced Piezoelectric Shunt Design

2003 ◽  
Vol 10 (2) ◽  
pp. 127-133 ◽  
Author(s):  
Chul H. Park ◽  
Daniel J. Inman
Keyword(s):  
Vibration Mode ◽  
Vibration Suppression ◽  
Vibration Reduction ◽  
Low Frequency ◽  
Internal Resistance ◽  
Vibration Modes ◽  
Low Frequency Vibration ◽  
Design Resistance ◽  
Piezoelectric Shunt ◽  
Shunt Circuit

Piezoceramic material connected to an electronic shunt branch circuit has formed a successful vibration reduction device. One drawback of the conventional electronic shunt circuit is the large inductance required when suppressing low frequency vibration modes. Also, the large internal resistance associated with this large inductance exceeds the optimal design resistance needed for low frequency vibration suppression. To solve this problem, a modified and enhanced piezoelectric shunt circuit is designed and analyzed by using mechanical-electrical analogies to present the physical interpretation. The enhanced shunt circuit developed in this paper is proved to significantly reduce the targeted vibration mode of a cantilever beam, theoretically and experimentally.

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