Control issues of microgravity vibration isolation

Knospe, Carl R.; Hampton, R. David; Allaire, Paul E.

doi:10.1016/0094-5765(91)90045-7

Cited by 12 publications

(3 citation statements)

References 5 publications

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“…Agnes et al [6] described the vibration problems and solutions typical of "ghter aircraft. Space applications vary in scope from structural control such as demonstrated by the INFLEX experiment [7] to microgravity isolation [8]. Recently, application of vibration isolation to the Space Shuttle was studied by Lee-Glauser et al [9] and the Space Station vibration control was discussed by Ellison et al [10].…”

Section: Introductionmentioning

confidence: 99%

Passive Vibration Control of Airborne Equipment Using a Circular Steel Ring

Ellison

Ahmadi

Kehoe

2001

Journal of Sound and Vibration

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Section: Introductionmentioning

confidence: 99%

Passive Vibration Control of Airborne Equipment Using a Circular Steel Ring

Ellison

Ahmadi

Kehoe

2001

Journal of Sound and Vibration

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“…Passive vibration isolation, which is reliable to isolate high-frequency vibration, has a poor performance in microvibration frequency range [1]. Due to the extremely small stiffness needed to isolate such low-frequency base disturbances, active vibration isolation offers significant advantages over passive systems [2].…”

Section: Introductionmentioning

confidence: 99%

Parametric Design and Multiobjective Optimization of Maglev Actuators for Active Vibration Isolation System

Yue

Liu

et al. 2014

Advances in Mechanical Engineering

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The microvibration has a serious impact on science experiments on the space station and on image quality of high resolution satellites. As an important component of the active vibration isolation platform, the maglev actuator has a large stroke and exhibits excellent isolating performance benefiting from its noncontact characteristic. A maglev actuator with good linearity was designed in this paper. Fundamental features of the maglev actuator were obtained by finite element simulation. In order to minimize the coil weight and the heat dissipation of the maglev actuator, parametric design was carried out and multiobjective optimization based on the genetic algorithm was adopted. The optimized actuator has better mechanical properties than the initial one. Active vibration isolation platforms for different-scale payload were designed by changing the arrangement of the maglev actuators. The prototype to isolate vibration for small-scale payload was manufactured and the experiments for verifying the characteristics of the actuators were set up. The linearity of the actuator and the mechanical dynamic response of the vibration isolation platform were obtained. The experimental results highlight the effectiveness of the proposed design.

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“…Most of the previous works have focused on isolation from seismic movement; therefore, most of the works have dealt with relatively large amplitude motion [5]. The previous studies on semiconductor processing equipment are more relevant to our work [8,9]; however, none of these designs achieved adequate performance for M 3 .…”

Section: Introductionmentioning

confidence: 99%

Active Vibration Isolation for a Long Range Scanning Tunneling Microscope

Lan

Yen

Kramar

2004

Asian Journal of Control

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Vibration isolation or control is critical for the optimum operation of the Molecular Measuring Machine (M 3 ), a high-resolution, length-metrology instrument at the National Institute of Standards and Technology. This paper describes the extension of the M3 Mallock isolation suspension from passive to six degrees-of-freedom (DOF) active vibration isolation. System modeling is presented, and experimental system identification is carried out for the purpose of model verification. The paper then compares the vibration isolation performance achieved using a classical proportional-integral-derivative (PID) controller versus that achieved using a modified, model-based, Linear-Quadratic-Gaussian (LQG) controller. Attenuation of 3 dB to 15 dB is achieved within the active vibration isolation control bandwidth, and images taken with the M 3 scanning tunneling microscope (STM) probe show improved performance.

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Control issues of microgravity vibration isolation

Cited by 12 publications

References 5 publications

Passive Vibration Control of Airborne Equipment Using a Circular Steel Ring

Passive Vibration Control of Airborne Equipment Using a Circular Steel Ring

Parametric Design and Multiobjective Optimization of Maglev Actuators for Active Vibration Isolation System

Active Vibration Isolation for a Long Range Scanning Tunneling Microscope

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