Modal Vibration Control for PVDF Coated Plates

Stöbener, Uwe; Gaul, Lothar

doi:10.1177/104538900772664792

Cited by 8 publications

(11 citation statements)

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“…In most practical cases it is necessary to work with networks of discrete strain-type sensor patches, instead of continuously distributed ones. The typical strategy for the design of such networks is based on the optimization of performance indices based on modal/system observability; see Sto¨bener and Gaul (2000), Jha and Inman (2003), and Quek et al (2003). These methods directly target their application in the control of vibrations of flexible structures, but may not necessarily be used for monitoring local structural entities or detecting localized damage.…”

Section: Distributed Sensors and Sensor Networkmentioning

confidence: 99%

Strain-type Sensor Networks for Structural Monitoring of Beam-type Structures

Krommer

Zellhofer

Heilbrunner

2009

Journal of Intelligent Material Systems and Structures

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In our previous work, we have shown that distributed strain-type sensors can be used to measure desired structural entities. A distributed strain-type sensor, whose distribution coincides with any statically admissible stress distribution due to quasi-static auxiliary forces, measures the work of these forces done on the original structural entities. Hence, a proper choice of the auxiliary forces results in the measurement of desired structural entities. In this article, we focus on the approximation of distributed sensors by sensor networks composed of sensor patches with constant intensity. The question is where to locate and how to assign weights to the patches such that the combined output of the network approximates the output of the distributed sensor. Our method is based on an integral statement characterizing the output of the distributed sensor and an integral statement for the output of the sensor network. As we cannot ensure the identity of the kernels of the integral statements, we develop methods ensuring the identity of the integral statements themselves. We develop the method for beam-type structures in detail. As a case study, we discuss a one-story frame structure and we seek to design sensor networks to measure desired structural entities; e.g., deflections or slopes.

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Section: Distributed Sensors and Sensor Networkmentioning

confidence: 99%

Strain-type Sensor Networks for Structural Monitoring of Beam-type Structures

Krommer

Zellhofer

Heilbrunner

2009

Journal of Intelligent Material Systems and Structures

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“…Specifically for structural dynamics, this approach was formulated in work by Gould and Murray‐Lasso and further developed and summarized by Porter and Crossley and Meirovitch . The examples of successful application of the modal method to vibration control of shell structures using PZT and PVDF transducers can be found in the work of Collet and Jezequel, Stöbener and Gaul, Hurlebaus et al, and Zenz et al…”

Section: Introductionmentioning

confidence: 99%

“…Specifically for structural dynamics, this approach was formulated in work by Gould and Murray-Lasso [17] and further developed and summarized by Porter and Crossley [18] and Meirovitch. [19] The examples of successful application of the modal method to vibration control of shell structures using PZT and PVDF transducers can be found in the work of Collet and Jezequel, [20] Stöbener and Gaul, [21] Hurlebaus et al, [22] and Zenz et al [23] In order to implement the modal control, one needs to find a proper design or distribution of sensors and actuators in the control object, such that they can measure the dynamics of particular vibration modes and influence them in efficient way. The use of distributed sensors and actuators as the modal filters is discussed in the work of Lee and Moon [24] and Donoso and Bellido.…”

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confidence: 99%

Experimental study of local and modal approaches to active vibration control of elastic systems

Belyaev

Fedotov

Irschik

et al. 2017

Struct Control Health Monit

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Summary Two different methods, local and modal, are suggested to control systems with distributed parameters, each of them having its own advantages and drawbacks. The aim of the present research is to carry out experiments aiming in comparison of these 2 methods for the problem of suppression of forced bending vibrations of a thin metal beam. Two pairs of piezoelectric sensors and actuators are attached to the beam in each control system considered. Their locations are chosen so as to provide the most efficient measurement and excitation of the first and second vibration modes of the beam. Frequency methods of the automatic control theory are employed to design stable control systems that can efficiently suppress bending vibrations of the beam with the first and second resonance frequencies. As a result, control systems with the desired performance are created on the basis of both local and modal methods. The obtained modal system works efficiently for both resonances, whereas the local systems demonstrate appropriate performance either at the first or at the second resonance frequency only. This difference is due to the fact that in the case of modal control, each control loop corresponds to a particular vibration mode and can be designed to provide optimal performance at the required frequency. The performed benchmark study demonstrates the advantages of the modal method over the local one for the cases where it is necessary to suppress vibrations in the frequency range that contains more than one resonance frequency of the control object.

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“…Until now, most of the vibration control applications based on strain sensor networks were demonstrated using arrays of piezoelectric sensors, such as for example in the work of Stoebener and Gaul (2000) or François et al (2001). Piezoelectric sensors are very well suited for use with high-frequency strain signals, but their use in the measurement of static strain is rather limited due to drift.…”

Section: Introductionmentioning

confidence: 99%

Vibration and Shape Control in Opto-mechanical Systems Using Distributed Fiber-optic Bragg Grating Sensors

Mueller¹,

Baier²,

Zeh³

et al. 2010

Journal of Vibration and Control

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High-precision opto-mechanical systems are characterized by significant interactions between structural dynamics and optics. Novel sensing techniques for the vibration and shape control of such structures are investigated. Owing to the number of necessary sensors and the required precision, fiber-optic Bragg grating (FBG) sensors could be an attractive option for this task. They allow the simultaneous measurement of strain at many locations in a structure. Many FBG sensor systems provide high precision, but their delay time and maximum acquisition frequency makes them difficult to use for vibration control purposes. Therefore, a novel multi-channel FBG sensor system was developed using a position sensitive detector for the wavelength interrogation which has much less delay time than a charge coupled device-based system and a theoretical maximum bandwidth of over 300 kHz. This system was tested for high-precision static strain measurements for shape control applications at low frequencies in an experimental test rig ( < 0 .3 μm/m) as well as for high-frequency strain measurements of more than 10 kHz. Its application potential for shape and vibration control application was demonstrated experimentally as well as its applicability to modal analysis. This could be an interesting alternative to the use of piezo-strain sensors in structural control applications where high frequencies are needed, as well as an alternative for shape control where high-resolution strain measurements are desirable.

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Modal Vibration Control for PVDF Coated Plates

Cited by 8 publications

References 0 publications

Strain-type Sensor Networks for Structural Monitoring of Beam-type Structures

Strain-type Sensor Networks for Structural Monitoring of Beam-type Structures

Experimental study of local and modal approaches to active vibration control of elastic systems

Vibration and Shape Control in Opto-mechanical Systems Using Distributed Fiber-optic Bragg Grating Sensors

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