&lt;title&gt;Survey of state-of-the-art vibration isolation research and technology for space applications&lt;/title&gt;

Winthrop, Michael F.; Cobb, Richard

doi:10.1117/12.483944

Cited by 27 publications

(14 citation statements)

References 74 publications

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“…Crewed vehicles, such as the ISS [149], often have a less favorable vibration environment due to movement of the human crew about the cabin and other crew-related systems (e.g., air circulation, gas venting). Regardless of the source, vibration isolation systems are common feature of scientific optical payloads of all sizes [150,151,152].…”

Section: Preliminary Feasibility Assessment Of Starnav Measurementsmentioning

confidence: 99%

StarNAV: Autonomous Optical Navigation of a Spacecraft by the Relativistic Perturbation of Starlight

Christian

2019

Sensors

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Future space exploration missions require increased autonomy. This is especially true for navigation, where continued reliance on Earth-based resources is often a limiting factor in mission design and selection. In response to the need for autonomous navigation, this work introduces the StarNAV framework that may allow a spacecraft to autonomously navigate anywhere in the Solar System (or beyond) using only passive observations of naturally occurring starlight. Relativistic perturbations in the wavelength and direction of observed stars may be used to infer spacecraft velocity which, in turn, may be used for navigation. This work develops the mathematics governing such an approach and explores its efficacy for autonomous navigation. Measurement of stellar spectral shift due to the relativistic Doppler effect is found to be ineffective in practice. Instead, measurement of the change in inter-star angle due to stellar aberration appears to be the most promising technique for navigation by the relativistic perturbation of starlight.

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Section: Preliminary Feasibility Assessment Of Starnav Measurementsmentioning

confidence: 99%

StarNAV: Autonomous Optical Navigation of a Spacecraft by the Relativistic Perturbation of Starlight

Christian

2019

Sensors

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“…Thus, the vibration control of large flexible appendage must be considered, and satellite attitude controller must be adjusted on-orbit. Although the passive vibration control, a reliable and low cost method, is valid in suppressing high frequency vibration, it is of no use for weakening low frequency vibration [3] . With the emergence of PZT, the smart structure can be realized after integrating controller, sensor and actuator, active vibration control of large flexible close mode satellite antenna.…”

Section: Introductionmentioning

confidence: 99%

System identification of large flexible appendage on satellite for autonomous control

Li¹,

Wang²,

Liu³

2013

2013 10th IEEE International Conference on Control and Automation (ICCA)

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Vibration of Large flexible appendage seriously reduces the stability and accuracy of satellite attitude control, which can be solved by adjusting controller via on-orbit system identification method. This paper focuses on large flexible close mode satellite antenna, and Observer/Kalman filter identification (OKID) method is put into practice to solve the problem of system identification. Mode parameters and displacement responses under impulse and white noise excitations are extracted by finite element method (FEM), and then the concept of singular entropy is introduced to reduce observation noise and determine system order. Markov parameters are computed from displacement response and mode order, which is adopted in minimal realization of state space based on eigensystem realization algorithm (ERA). Comparing with the results of FEM in numerical simulation, OKID method is much more accurate and efficient for large flexible close mode satellite antenna on-orbit system identification.

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“…Tuned vibration absorbers, for example, have been widely used to reduce vibration [8]. Winthrop et al [9] describe the shortcomings of passive vibration control systems, including the inability to achieve isolation at very low frequencies, a trade-off between resonant and high-frequency attenuation, and an inability to adapt to variations in parameters and excitation frequencies. Hybrid vibration control utilizes both active and passive methods to reduce the energy consumption while improving performance [5,10].…”

Section: Introductionmentioning

confidence: 99%

Switched Stiffness Vibration Controllers for Fluidic Flexible Matrix Composites

Lotfi-Gaskarimahalle

Rahn

2009

Volume 1: 22nd Biennial Conference on Mechanical Vibration and Noise, Parts a and B

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This paper investigates semi-active vibration control using Fluidic Flexible Matrix Composites (F 2 MC) as variable stiffness components of exible structures. The stiffness of F 2 MC tubes can be dynamically switched from soft to stiff by opening and closing an on/off valve. Fiber reinforcement of the F 2 MC tube changes the internal volume when externally loaded. With an open valve, the uid in the tube is free to move in or out of the tube, so the stiffness is low. When the valve is closed, the high bulk modulus uid resists volume change and produces high stiffness. The equations of motion of an F 2 MC-mass system is derived using a 3D elasticity model and the energy method. The stability of the unforced dynamic system is proven using a Lyapunov approach. To capture the important system parameters, nondimensional full order and reduced order models are developed. A Zero Vibration (ZV) state switch technique is introduced that suppresses vibration in nite time, and is compared to conventional Skyhook semiactive control. The ITAE performance of the controllers is optimized by adjusting the open valve ow coef cient. Simulation results show that the optimal ZV controller outperforms the optimal Skyhook controller by 13% and 60% for impulse and step response, respectively. IntroductionVibration degrades the performance of many mechanical systems. The accuracy of trajectory tracking and set-point regulation is often limited by structural vibration. Vibration control is categorized as: active [1], passive [2], semi-active [3,4] or hybrid [5], based on the power consumption of the control system.Active vibration control systems normally can achieve

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<title>Survey of state-of-the-art vibration isolation research and technology for space applications</title>

Cited by 27 publications

References 74 publications

StarNAV: Autonomous Optical Navigation of a Spacecraft by the Relativistic Perturbation of Starlight

StarNAV: Autonomous Optical Navigation of a Spacecraft by the Relativistic Perturbation of Starlight

System identification of large flexible appendage on satellite for autonomous control

Switched Stiffness Vibration Controllers for Fluidic Flexible Matrix Composites

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