Active platform stabilisation with a 6D seismometer
arXiv:2207.10417 · doi:10.1063/5.0118606
Abstract
We demonstrate the control scheme of an active platform with a six degree of freedom (6D) seismometer. The inertial sensor simultaneously measures translational and tilt degrees of freedom of the platform and does not require any additional sensors for the stabilisation. We show that a feedforward cancellation scheme can efficiently decouple tilt-to-horizontal coupling of the seismometer in the digital control scheme. We stabilise the platform in the frequency band from 250 mHz up to 10 Hz in the horizontal degrees of freedom and achieve a suppression factor of 100 around 1 Hz. Further suppression of ground vibrations was limited by the non-linear response of the piezo actuators of the platform and by its limited range (5 μm). In this paper we discuss the 6D seismometer, its control scheme, and the limitations of the test bed.
References in corpus (25)
- Observation of Gravitational Waves from a Binary Black Hole Merger
- GW170817: Observation of Gravitational Waves from a Binary Neutron Star Inspiral
- Advanced Virgo: a 2nd generation interferometric gravitational wave detector
- GWTC-1: A Gravitational-Wave Transient Catalog of Compact Binary Mergers Observed by LIGO and Virgo during the First and Second Observing Runs
- GW151226: Observation of Gravitational Waves from a 22-Solar-Mass Binary Black Hole Coalescence
- GWTC-2: Compact Binary Coalescences Observed by LIGO and Virgo During the First Half of the Third Observing Run
- GW170814: A Three-Detector Observation of Gravitational Waves from a Binary Black Hole Coalescence
- GW190521: A Binary Black Hole Merger with a Total Mass of
- Characterization of the LIGO detectors during their sixth science run
- Observation of gravitational waves from two neutron star-black hole coalescences
- The Sensitivity of the Advanced LIGO Detectors at the Beginning of Gravitational Wave Astronomy
- Sensitivity and Performance of the Advanced LIGO Detectors in the Third Observing Run
- Seismic isolation of Advanced LIGO: Review of strategy, instrumentation and performance
- 3-OGC: Catalog of gravitational waves from compact-binary mergers
- A high-precision mechanical absolute-rotation sensor
- Prospects for detecting gravitational waves at 5 Hz with ground-based detectors
- Deep phase modulation interferometry
- Angular control of optical cavities in a radiation pressure dominated regime: the Enhanced LIGO case
- Compact Michelson interferometers with subpicometer sensitivity
- Passive, free-space laser gyroscope
- A 6D interferometric inertial isolation system
- Laser-Frequency Stabilization via a Quasimonolithic Mach-Zehnder Interferometer with Arms of Unequal Length and Balanced dc Readout
- Passive optical gyroscope with double homodyne readout
- A six degree-of-freedom fused silica seismometer: Design and tests of a metal prototype
- Modeling and Experiment of the Suspended Seismometer Concept for Attenuating the Contribution of Tilt Motion in Horizontal Measurements
Cited by in corpus (4)
- A High-Finesse Suspended Interferometric Sensor for Macroscopic Quantum Mechanics with Femtometre Sensitivity
- First result for testing semiclassical gravity effect with a torsion balance
- Demonstration of the minimal coupling of horizontal accelerations to rotations in a torsion balance suspended from three wires
- Extending Ground-Based Gravitational-Wave Sensitivity to 5 Hz