An autonomous shunt circuit for vibration damping

Niederberger, Dominik; Morari, Manfred

doi:10.1088/0964-1726/15/2/016

Cited by 68 publications

(59 citation statements)

References 15 publications

(23 reference statements)

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“…Usually the switching action is performed at the extremum of the displacement motion. However, in the autonomous SSD techniques, the task of the DSP is taken up by an additional collocated piezoelectric transducer which acts as a sensor to generate an electrical signal in proportion to the displacement and the strain of the vibrating structure [18]. A low pass filter is used in the autonomous shunt circuit which filters the sensor voltage V s to generate a control voltage V c in order to control and power up the switch.…”

Section: Implementation Of Autonomous Ssdnci Techniquementioning

confidence: 99%

“…In the work of Niederberger and Morari [18], a lowamplitude sinusoidal control voltage V c was used to drive the switch which resulted in the poor control performance. Actually the low pass filter used in their work, reduced the piezo sensor voltage V s by at least 10 times resulting in inefficient switching with large electrical losses.…”

Section: Implementation Of Autonomous Ssdnci Techniquementioning

confidence: 99%

“…Also the SSD techniques consume very less power which is required for electronic components (except SSDV), thus making them ideal candidate for autonomous shunts. The role of a microcontroller is taken up by a low pass filter in the autonomous shunts, thus making them ideal candidate for onboard applications [18]. Some examples of autonomous shunt can be found in Niederberger and Morari [18] who used an autonomous shunt based on SSDI technique while Shen et al [20] used an autonomous SSDV technique in which an additional vibrating structure was used to harvest energy for the voltage sources.…”

Section: Introductionmentioning

confidence: 99%

“…The role of a microcontroller is taken up by a low pass filter in the autonomous shunts, thus making them ideal candidate for onboard applications [18]. Some examples of autonomous shunt can be found in Niederberger and Morari [18] who used an autonomous shunt based on SSDI technique while Shen et al [20] used an autonomous SSDV technique in which an additional vibrating structure was used to harvest energy for the voltage sources. A broadband vibration control using a self-powered SSDI technique was proposed by Lallart et al [19] who focused on the adaptive switching process.…”

Section: Introductionmentioning

confidence: 99%

“…A broadband vibration control using a self-powered SSDI technique was proposed by Lallart et al [19] who focused on the adaptive switching process. Recently, Delpero et al [21] improved the damping performance of self-powered SSDI technique in comparison to the technique proposed by Niederberger and Morari [18]. Both single and broadband excitations were discussed for the control of a cantilever aluminum beam.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

An autonomous synchronized switch damping on inductance and negative capacitance for piezoelectric broadband vibration suppression

Qureshi¹,

Shen²,

Chang³

2016

International Journal of Aeronautical and Space Sciences

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Synchronized switch damping (SSD) is a structural vibration control technique in which a piezoelectric patch attached to or embedded into the structure is connected to or disconnected from the shunt circuit in order to dissipate the vibration energy of the host structure. The switching process is performed by a digital signal processor (DSP) which detects the displacement extrema and generates a command to operate the switch in synchronous with the structure motion. Recently, autonomous SSD techniques have emerged in which the work of DSP is taken up by a low pass filter, thus making the whole system autonomous or self-powered. The control performance of the previous autonomous SSD techniques heavily relied on the electrical quality factor of the shunt circuit which limited their damping performance. Thus in order to reduce the influence of the electrical quality factor on the damping performance, a new autonomous SSD technique is proposed in this paper in which a negative capacitor is used along with the inductor in the shunt circuit. Only a negative capacitor could also be used instead of inductor but it caused saturation of negative capacitor in the absence of an inductor due to high current generated during the switching process. The presence of inductor in the shunt circuit of negative capacitor limits the amount of current supplied by the negative capacitance, thus improving the damping performance. In order to judge the control performance of proposed autonomous SSDNCI, a comparison is made between the autonomous SSDI, autonomous SSDNC and autonomous SSDNCI techniques for the control of an aluminum cantilever beam subjected to both single mode and multimode excitation. A value of negative capacitance slightly greater than the piezoelectric patch capacitance gave the optimum damping results. Experiment results confirmed the effectiveness of the proposed autonomous SSDNCI technique as compared to the previous techniques. Some limitations and drawbacks of the proposed technique are also discussed.

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Section: Implementation Of Autonomous Ssdnci Techniquementioning

confidence: 99%

Section: Implementation Of Autonomous Ssdnci Techniquementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

An autonomous synchronized switch damping on inductance and negative capacitance for piezoelectric broadband vibration suppression

Qureshi¹,

Shen²,

Chang³

2016

International Journal of Aeronautical and Space Sciences

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Shunt Piezoelectric Circuits

Mao

Pietrzko

2013

Control of Noise and Structural Vibration

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Intrinsic electromechanical dynamic equations for piezoelectric power harvesters

Lumentut

Howard

2016

Acta Mech

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This paper discusses, compares and contrasts two important techniques for formulating the electromechanical piezoelectric equations for power harvesting system applications. It presents important additions to existing literature by providing intrinsic formulation techniques of the harvesting system for the two different electromechanical dynamic equation-based voltage and charge type systems associated with the standard AC-DC circuit interface developed using the extended Hamiltonian principle. The derivations of the two analytical methods rely on the fundamental continuum thermopiezoelectricity concepts of the electrical enthalpy energy and Helmholtz free energy. The benefit of using analytical charge type modelling is that the technique shows more compact formulation for developing simultaneous derivations by coupling the mechanical and electromechanical systems of the piezoelectric devices and electronic system so that the frequency response functions (FRFs) and time wave form systems can be formulated. On the other hand, the analytical voltage type modelling is obviously convenient but can show tedious derivation process for joining with the electronic circuit part. To tackle this situation, the analytical voltage type with mechanical and electromechanical forms of the piezoelectric structure can be derived separately from the electronic system where they can be combined together after applying further derivations to formulate the FRFs. In this paper, the two analytical techniques also show particular benefit and even further development of how to model the power harvesting scheme with the combinations of piezoelectric structure and electronic system. Moreover, validations of the two analytical methods show good agreement with the previous authors' electromechanical finite element analysis and experimental works. Further parametric electromechanical energy harvesting behaviours have been explored to study the system responses.

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An autonomous shunt circuit for vibration damping

Cited by 68 publications

References 15 publications

An autonomous synchronized switch damping on inductance and negative capacitance for piezoelectric broadband vibration suppression

An autonomous synchronized switch damping on inductance and negative capacitance for piezoelectric broadband vibration suppression

Shunt Piezoelectric Circuits

Intrinsic electromechanical dynamic equations for piezoelectric power harvesters

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