Improving the Performance of a Vibration Neutraliser by Actively Removing Damping

Kidner, M.; Brennan, M.J.

doi:10.1006/jsvi.1998.2027

Cited by 28 publications

(24 citation statements)

References 11 publications

(16 reference statements)

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“…If the TVA is fully undamped, the mobility of the system at the resonance of the TVA turns to zero, i.e., complete cancellation of vibrations. It can be shown that the performance of the passive TVA is directly proportional to the mass ratio m N =M, while increased damping has the contrary effect [8]. This issue is illustrated in Figure 3 (left).…”

Section: Passive Vibration Control With Tuned Vibration Absorbersmentioning

confidence: 80%

Passive, Adaptive, Active Vibration Control, and Integrated Approaches

Mayer¹,

Herold²

2018

Vibration Analysis and Control in Mechanical Structures and Wind Energy Conversion Systems

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Passive vibration control solutions like tuned vibration absorbers are often limited to tackle a single structural resonance or a specific disturbance frequency. Active vibration control systems can overcome these limitations, yet requiring continuously electrical energy for a sufficient performance. Thus, in some cases, a passive vibration control system is still preferable. Yet, the integration of active elements enables adaptation of the system parameters, for instance, the resonance of a tuned vibration absorber. These adaptive or semi-active systems only require external energy for the adaptation, while the compensating forces are generated by the inertia of the absorber's mass. In this contribution, the fundamentals of active, passive, and adaptive vibration control are briefly summarized and compared regarding their main advantages and design challenges. In the second part, a design of an inertial mass device with integrated piezoelectric actuators is presented. By applying a lever mechanism, the stiffness of the inertial mass device can be tuned even to very low frequencies. The device can be used to implement both adaptive tuned vibration absorbers and active control systems. In the last section of the chapter, the device is used in an experiment for vibration control of a large elastic structure. The setup is used to demonstrate different strategies for the realization of a vibration control system and the integration of different vibration control strategies.

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Section: Passive Vibration Control With Tuned Vibration Absorbersmentioning

confidence: 80%

Passive, Adaptive, Active Vibration Control, and Integrated Approaches

Mayer¹,

Herold²

2018

Vibration Analysis and Control in Mechanical Structures and Wind Energy Conversion Systems

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“…PZTs have been used to remove damping to improve the performance of ATVAs (Kidner and Brennan, 1999). Here, the terrace PZT actuator is designed to apply a dynamic squeeze strain in the direction of particles chain.…”

Section: The Mechanical Structure and Working Principle Of Dstdva Mecmentioning

confidence: 99%

Study on a Dynamic Stiffness-tuning Absorber with Squeeze-strain Enhanced Magnetorheological Elastomer

Gong

et al. 2009

Journal of Intelligent Material Systems and Structures

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This article presents the design and analysis of a novel dynamic stiffness tuning vibration absorber working with Magnetorheological elastomers (MRE). In this design, the MRE worked in a shear mode, but its MR effect was significantly enhanced by dynamically squeezing the sample thickness with an embedded piezoelectric (PZT) actuator. With this design, both the quasi-static magnetic field and the PZT driven dynamic squeeze strain in the direction of particles chain were properly adjusted to control the vibration of the primary system. The vibration suppression capabilities were theoretically analyzed by the harmonic analysis. A combined control strategy (the tuning strategy and the ON-OFF strategy) and the control system were developed to suppress the vibration of the primary system. The simulation results indicate that the proposed MRE-PZT-based dynamic stiffness-tuning dynamic vibration absorber (DSTDVA) exhibits more effective suppression capabilities than those conventional MRE-based quasi-static tuned vibration absorbers; the stronger the enhanced effect of squeeze strain on MRE's shear storage modulus is, the more effective vibration suppression capabilities the proposed MRE-PZT-based DSTDVA has.

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“…A two dof system (equation 7) consisting of two masses connected by a spring that fits this simplified model (equation 12) should have the following mass ratio [6] ( ) 478…”

Section: The Free-free Beam As a Tvamentioning

confidence: 99%

“…In order to automatically tune the vibration absorber, a control strategy can be used, such as that proposed by Long et al [2] or Kidner and Brennan [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

A shape memory alloy adaptive tuned vibration absorber: design and implementation

Rustighi

Brennan²,

Mace

2004

Smart Mater. Struct.

119

107

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A well-established vibration control device is the tuned vibration absorber (TVA).Even though such a device may be have different shapes it acts like a spring-mass system. For simplicity, in this project a beam-like TVA is used.One of the drawbacks of such a device, however, is that it can detune during operation because of changes in forcing frequency. To maintain its tuned condition a variable stiffness element is required so that the natural frequency of the absorber can be adjusted in real-time.

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Improving the Performance of a Vibration Neutraliser by Actively Removing Damping

Cited by 28 publications

References 11 publications

Passive, Adaptive, Active Vibration Control, and Integrated Approaches

Passive, Adaptive, Active Vibration Control, and Integrated Approaches

Study on a Dynamic Stiffness-tuning Absorber with Squeeze-strain Enhanced Magnetorheological Elastomer

A shape memory alloy adaptive tuned vibration absorber: design and implementation

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