Review of Active Vibration Isolation Strategies

Collette, Christophe; Janssens, Stef; Artoos, Kurt

doi:10.2174/2212797611104030212

Cited by 30 publications

(22 citation statements)

References 23 publications

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“…For this, the stiffness value of the link between QF1 and the ground has been modified to k q ¼ 1e7N=m. This configuration corresponds typically to a big mass placed on a rubber layer in series with a piezoelectric actuator [23]. Figure 16 shows the transfer functions between the ground and the quadrupoles when the feedback control is turned off and on.…”

Section: B Active Isolationmentioning

confidence: 99%

Budgeting and control of the mechanical noise in the International Linear Collider final focus system

Tshilumba

Oriunno

Markiewicz

et al. 2014

Phys. Rev. ST Accel. Beams

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In this paper, we present a simplified vibration model of the silicon detector (SiD), where the final doublet (QD0) is captured inside the detector and the penultimate magnet (QF1) is inside the machine tunnel. Ground motion spectra measured at the detector hall at SLAC have been used together with a spectrum of the technical noise on the detector. The model predicts that the maximum level of rms (root mean square) vibration seen by QD0 is well below the capture range of the interaction point (IP) feedback system available in the ILC. With the addition of an active stabilization system on QD0, it is also possible to get closer to the stability requirements of the compact linear collider (CLIC). These results can have important implications for CLIC.

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Section: B Active Isolationmentioning

confidence: 99%

Budgeting and control of the mechanical noise in the International Linear Collider final focus system

Tshilumba

Oriunno

Markiewicz

et al. 2014

Phys. Rev. ST Accel. Beams

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“…Active isolators can perform at a higher level than passive isolators through the incorporation of an active component. Collette et al have reviewed several patented developments in the field of active vibration isolation [4]. ey demonstrated that active suspension does not suffer from the two fundamental trade-offs between the settling time caused by the direct excitation of payload and the transmissibility by the base excitation through the isolator which are inherently given to passive suspension design.…”

Section: Introductionmentioning

confidence: 99%

Experimental Approach to Active Mounts Using Electromagnetic Actuator and Rubber with Consideration of Shock Resistance for Naval Shipboard Equipment

Shin

Moon

Jung

et al. 2019

Shock and Vibration

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There is demand for stringent vibration isolation within machine installations in order to achieve maximum performance or to satisfy otherwise extreme criteria, particularly, when there is a strong source of vibration such as a motor pump. It is frequently necessary to prevent the transmission of these vibrations to other parts of the system for passenger comfort in vehicles, ships, trains, etc., or for the protection of delicate electronic equipment. In the defense sector, the need for equipment which is better at avoiding detection has led researchers to focus more on improving vibration isolation. In this paper, an active mount combined with a passive rubber mount and an electromagnetic actuator is proposed and examined for use in naval shipboard equipment. The electromagnetic actuator is suggested for improving performance and overcoming its inherent limitations which are caused by the friction between the magnet and coil. The design specifications of an active mount, such as required force, displacement, and frequency characteristics, are identified for the self-excited pump system, and then an electromagnetic actuator active mount is redesigned with considering the shape of the passive rubber mount and shock resistance. The performance was examined on the single active mount using an external exciter, which could be simplified as two-degree-of-freedom system, and also confirmed experimentally on an active mount system with four mounts using a motor system. From the results of applying the proposed electromagnetic active mount, a vibration reduction of about 20 dB for the motor equipment was observed for the excited frequency components of 1,600 rpm and its two harmonic components.

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“…(iv) Stabilization and isolation of large instruments dedicated to extreme experimental physics, like gravitational wave interferometric detectors or future particle colliders. In these systems the immunity to environmental disturbances is obtained by actively cancelling the structural vibration measured by inertial sensors [15].…”

Section: Introductionmentioning

confidence: 99%