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841
Intersatellite and Downlink Agile Attitude Maneuvers
Published 2023-11-01“…In this study, we use an inertia-free nonlinear attitude control algorithm based on rotation matrices and possessing remarkable stability properties, in conjunction with a pyramidal array of single-gimbal control momentum gyroscopes. Numerical simulations, in both nominal and nonnominal flight conditions, demonstrate that the attitude control architecture proposed in this work is effective for the purpose of performing agile attitude maneuvering, aimed at precise pointing during downlink and intersat data routing.…”
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Article -
842
Design of a Multiple Folded-Beam Disk Resonator with High Quality Factor
Published 2022-09-01“…Meanwhile, a small initial frequency split of the order-3 working modes endows the resonator with great potential for microelectromechanical systems (MEMS) gyroscopes application. Moreover, the experimental quality factor of resonators with different beam widths and relevant temperature experiment indicate that the dominating damping mechanism of the multiple folded-beam disk resonator is no longer thermoelastic damping.…”
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Article -
843
A Survey of IoT-Based Fall Detection for Aiding Elderly Care: Sensors, Methods, Challenges and Future Trends
Published 2022-03-01“…In addition, the usability of different sensor types, such as gyroscopes and accelerometers in smartwatches, is described and discussed with the current limitations and challenges for realizing successful FDSs. …”
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844
Computational–Experimental Design Framework for Laser Path Length Controller
Published 2021-07-01“…A path length controller is a high-precision piezoelectric actuator used in laser oscillators, especially in ring laser gyroscopes. A path length controller alters the position of a mirror nanometrically by means of a control voltage to stabilize the route that a laser beam travels in an integral multiple of laser wavelength. …”
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845
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846
Smart Android tablet tracking system
Published 2013“…These are inertial navigation (accelerometers and gyroscopes), mechanical waves (ultra‐sound) and electromagnetic waves (visible, infrared, cellular networks, DECT phones, WLAN, ZigBee, RFID, ultra‐wideband). …”
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Final Year Project (FYP) -
847
Development of an android application and a cloud based server for a real time locating system using RFID
Published 2016“…An attempt is made to determine the approximate position of the device indoors using accelerometers, gyroscopes and magnetometers which are the inertial sensors provided by the Android system.…”
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Thesis -
848
Sensors for correcting human movement
Published 2017“…As well as an enhanced complementary filter, which provided a feedback loop to aid in correcting gyroscope’s drift. It concluded good accuracy of angle estimates with the complementary filter designed, when using XSENS sensor as benchmark. …”
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Final Year Project (FYP) -
849
Algoritma Penentuan Jarak dengan Sensor IMU Accelerometer
Published 2010“…An IMU works by sensing motion, including the rate and direction of the motion, using a combination of accelerometers and gyroscopes. The signal obtained from these sensors does require processing as there is no direct conversion between acceleration and position. …”
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Article -
850
Hybrid markerless augmented reality tracking method for planar surface
Published 2013“…The proposed method provides collaboration of vision-based approach with accelerometers and gyroscopes sensors as camera pose predictor. To align the augmentation relative to camera motion, the tracking method is done by substituting feature-based camera estimation with combination of inertial sensors with complementary filter to provide more dynamic response. …”
Thesis -
851
A Novel Walking Detection and Step Counting Algorithm Using Unconstrained Smartphones
Published 2018-01-01“…On account of the periodicity of the walking motion and sensitivity of gyroscopes, the proposed algorithm extracts the frequency domain features from three-dimensional (3D) angular velocities of a smartphone through FFT (fast Fourier transform) and identifies whether its holder is walking or not irrespective of its placement. …”
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Article -
852
Spin Rate Measurements in Cricket Bowling Using Magnetometers
Published 2020-06-01“…An instrumented cricket ball has proved to be effective in measuring high-speed spin rates using gyroscopes. In this study, an instrumented ball with a 3-axis accelerometer, 3-axis gyroscope, and 3-axis magnetometer located at the center mass of the ball was constructed. …”
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Article -
853
Attitude sensors relative angular misalignment estimation in integrated navigation systems
Published 2022-01-01“…The best performance of INS and its sensors (gyroscopes and accelerometers) errors estimation can be obtained when all types of correction are implemented simultaneously. …”
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Article -
854
A Dual-Axis Rotation Scheme for Redundant Rotational Inertial Navigation System
Published 2023-01-01“…Finally, the rotation scheme was applied to an RRINS prototype consisting of RIMU (four fiber optic gyroscopes + four quartz accelerometers) and a dual-axis turntable, and then simulations and experiments were performed. …”
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855
A Gyroless Algorithm with Multi-Hypothesis Initialization for Projectile Navigation
Published 2021-11-01“…Particularly, rate gyroscopes which are gun-hardened and have an appropriate operating range are not widely available. …”
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Article -
856
PDR with a Foot-Mounted IMU and Ramp Detection
Published 2011-09-01“…PDR solutions integrate the signals coming from an Inertial Measurement Unit (IMU), which usually contains 3 accelerometers and 3 gyroscopes. The main problem of PDR is the accumulation of positioning errors due to the drift caused by the noise in the sensors. …”
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Article -
857
Hybrid noise removal to improve the accuracy of inertial sensors using lifting wavelet transform optimized by genetic algorithm
Published 2023-10-01“…Besides, for static data, there are 71% and 36% improvements in gyroscope and accelerometer data, respectively.…”
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Article -
858
Research on Construction Workers’ Activity Recognition Based on Smartphone
Published 2018-08-01“…The accelerometers and gyroscopes embedded in smartphones were utilized to collect three-axis acceleration and angle data of eight main activities with relatively high frequency in simulated floor-reinforcing steel work. …”
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Article -
859
A comprehensive comparison of machine learning approaches with hyper-parameter tuning for smartphone sensor-based human activity recognition
Published 2023-12-01“…Human Activity Recognition (HAR) using Smartphone sensors like accelerometers and gyroscopes has proven to be one of the most preferred ways to collect data in a simple manner without the need for any additional hardware installation. …”
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Article -
860
Self-Oscillation-Based Frequency Tracking for the Drive and Detection of Resonance Magnetometers
Published 2016-05-01“…The proposed method can also be applied in other MEMS sensors such as gyroscopes and micromirrors to enhance their frequency tracking ability.…”
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