Control performance of active-passive composite tuned mass damper

Nishimura, Isao; Yamada, Toshikazu; Sakamoto, Mitsuo; Kobori, Takuji

doi:10.1088/0964-1726/7/5/008

Cited by 36 publications

(19 citation statements)

References 11 publications

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“…However, the solutions are shown graphically in Figure 5b, along with those from equation (12). It transpires that within the limits of machine precision the solutions are numerically equivalent to:…”

Section: Chatter Stability Optimisationmentioning

confidence: 98%

“…In the general field of vibration control it is normally desirable to suppress the response magnitude in the frequency domain, and this can be achieved using Ormondroyd and Den Hartog's classical 'equal peaks' method [10,11]. A corresponding approach for active absorbers was proposed by Nishimura [12]. This method has been widely employed for a variety of problems in applications as diverse as civil engineering and space structures.…”

Section: Introductionmentioning

confidence: 99%

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Vibration absorbers for chatter suppression: A new analytical tuning methodology

Sims

2007

Journal of Sound and Vibration

178

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Vibration absorbers have been widely used to suppress undesirable vibrations in machining operations, with a particular emphasis on avoiding chatter. However, it is well known that for vibration absorbers to function effectively their stiffness and damping must be accurately tuned based upon the natural frequency of the vibrating structure. For general vibration problems, suitable tuning strategies were developed by Den Hartog and Brock over 50 years ago. However, the special nature of the chatter stability problem means that this classical tuning methodology is no longer optimal. Consequently vibration absorbers for chatter mitigation have generally been tuned using ad-hoc methods, or numerical or graphical approaches. The present article introduces a new analytical solution to this problem, and demonstrates its performance using time domain milling simulations. A 40-50% improvement in the critical limiting depth of cut is observed, compared to the classically tuned vibration absorber.

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Section: Chatter Stability Optimisationmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Vibration absorbers for chatter suppression: A new analytical tuning methodology

Sims

2007

Journal of Sound and Vibration

178

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“…As was shown in [13,[18][19][20][21][22][23][24], the acceleration of the primary structure as the driving force and velocity of the TMD as the active damping force of the HTMD are two essential direct response feedback signals to improve the performance of the HTMD. Also, it was shown in [14] that the displacement and acceleration of the TMD are two feedback signals which can be used for adaptive tuning of the HTMD to deal with the problem of off-tuning of a passive TMD.…”

Section: Control Algorithmmentioning

confidence: 99%

Experimental investigation of dynamic performance of a prototype hybrid tuned mass damper under human excitation

Noormohammadi¹,

Reynolds²

2013

SPIE Proceedings

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Current sport stadia designs focus mainly on maximizing audience capacity and providing a clear view for all spectators. Hence, incorporation of one or more cantilevered tiers is typical in these designs. However, employing such cantilevered tiers, usually with relatively low damping and natural frequencies, can make grandstands more susceptible to excitation by human activities. This is caused by the coincidence between the activity frequencies (and their lowest three harmonics) and the structural natural frequencies hence raising the possibility of resonant vibration. This can be both a vibration serviceability and a safety issue.Past solutions to deal with observed or anticipated vibration serviceability problems have been mainly passive methods, such as tuned mass dampers (TMDs). These techniques have exhibited problems such as lack of performance and offtuning caused by human-structure interaction. To address this issue, research is currently underway to investigate the possible application of hybrid TMDs (HTMDs), which are a combination of active and passive control, to improve the vibration serviceability of such structures under human excitation.The work presented here shows a comparative experimental investigation of a passive TMD and a prototype HTMD applied on a slab strip structure. The most effective control algorithm to enhance the performance of the HTMD and also deal with the off-tuning problem is investigated. The laboratory structure used here is an in-situ cast simply-supported post-tensioned slab strip excited by forces from a range of human activities.

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“…This indicates that stability and performance of the VPAA controller is influenced by the higher mode dynamics of the system. It should be noted that the stability condition suggested by Nishimura et al (1998, equation (2) Now that the stability of the control strategies has been explored, and controller gains have been chosen, the experimental performance can be compared to simulated behaviour.…”

Section: Root Locus Analysismentioning

confidence: 99%

“…In the past decades, active vibration control methods have received widespread attention for applications varying from civil structures (Guclu and Sertbas (2005;Nishimura et al (1992;Nishimura et al (1998)) to milling machines (Chung et al (1997)) and space satellites (Hagood and Crawley (1991)). One popular means of achieving active vibration control is through the use of proof-mass actuators (Preumont (2002)), which comprise a mass supported on a compliant suspension.…”

Section: Introductionmentioning

confidence: 99%

Vibration Control Strategies for Proof-mass Actuators

Huyanan

Sims

2007

Journal of Vibration and Control

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Proof-mass actuators have been considered for a broad range of structural vibration control problems, from the seismic protection of tall buildings, to the improvement of metal machining productivity by increasing the stability of self-excited vibrations known as chatter. In general this broad range of potential applications means that a variety of controllers have been proposed, without drawing direct comparisons with other controller designs that have been considered for different applications.This article takes three controllers that are potentially suitable for the machining chatter problem: direct velocity feedback, tuned-mass-damper control (or vibration absorber control), and active-tuned-mass-damper control (or active vibration absorber control). These control strategies are restated within the more general framework of Virtual Passive Control. Their performance is first compared using root locus techniques, with a model based upon experimental data that includes the low frequency dynamics of the proof mass. The frequency response of the test structure is then illustrated under open and closed-loop conditions. The application of the control strategies to avoid machine-tool chatter vibrations is then discussed, without going into detail on the underlying physical mechanisms of chatter. It is concluded that virtual passive absorber control is more straightforward to implement than virtual skyhook damping, and may be better suited to the problem of machining chatter.

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Control performance of active-passive composite tuned mass damper

Cited by 36 publications

References 11 publications

Vibration absorbers for chatter suppression: A new analytical tuning methodology

Vibration absorbers for chatter suppression: A new analytical tuning methodology

Experimental investigation of dynamic performance of a prototype hybrid tuned mass damper under human excitation

Vibration Control Strategies for Proof-mass Actuators

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