Results 71 to 80 of about 79,068 (332)

The Development of Inertial Navigation

Navigation, 1962
AN INERTIAL navigation system is a complex mechanism. As such, it was never invented; rather it evolved out of the work of many men. Newton gave us the laws of dynamics which enabled us to understand and use the accelerometer and gyroscope. Foucault's work with the gyroscope stimulated much thought and research on uses of the gyro.
openaire   +2 more sources

Flight test results of the Strapdown hexad Inertial Reference Unit (SIRU). Volume 1: Flight test summary [PDF]

Flight test results of the strapdown inertial reference unit (SIRU) navigation system are presented. The fault-tolerant SIRU navigation system features a redundant inertial sensor unit and dual computers.
Bjorkman, W. S., Hruby, R. J.
core   +1 more source

Integrated Inertial/gps [PDF]

, 1990
The presence of failures in navigation sensors can cause the determination of an erroneous aircraft state estimate, which includes position, attitude, and their derivatives.
Kline, Paul, Vangraas, Frank
core   +1 more source

Ferroelectric Quantum Dots for Retinomorphic In‐Sensor Computing

Advanced Materials, EarlyView.
This work has provided a protocol for fabricating retinomorphic phototransistors by integrating ferroelectric ligands with quantum dots. The resulting device combines ferroelectricity, optical responsiveness, and low‐power operation to enable adaptive signal amplification and high recognition accuracy under low‐light conditions, while supporting ...
Tingyu Long, Huanyu Zhou, Jaewan Ko, Hongwei Tan, Jaemin Lim, Yanfei Zhao, Daehan Kang, Eojin Yoon, Gyeong‐Tak Go, Somin Kim, Seung‐Woo Lee, Chan‐Yul Park, Hyojun Choi, Hyeran Kim, Hyung Joong Yun, Sung Hyuk Park, Kwan Sik Park, Jeong Woo Park, Mungeun Kim, Yong Soo Cho, Ho Won Jang, Wenqiang Yang, Min Hyuk Park, Wan Ki Bae, Sebastiaan van Dijken, Joona Bang, Tae‐Woo Lee   +26 more
wiley   +1 more source

Tightly Coupled LIDAR/IMU/UWB Fusion via Resilient Factor Graph for Quadruped Robot Positioning

Remote Sensing
Continuous accurate positioning in global navigation satellite system (GNSS)-denied environments is essential for robot navigation. Significant advances have been made with light detection and ranging (LiDAR)-inertial measurement unit (IMU) techniques ...
Yujin Kuang, Tongfei Hu, Mujiao Ouyang, Yuan Yang, Xiaoguo Zhang   +4 more
doaj   +1 more source

Study on Dual Channel Lateral Field Excitation Quartz Crystal Microbalance for Measuring Liquid Electrical Properties

Sensors, 2019
Lateral field excitation quartz crystal microbalance (LFE-QCM) can detect both the electrical properties (conductivity and permittivity) and mechanical properties (viscosity and density) of the liquid.
Jinxing Liang, Debo Kong, Chaolin Liu
doaj   +1 more source

New mechanization equations for aided inertial navigation systems [PDF]

Inertial navigation equations are developed which use area navigation (RNAV) waypoints and runway references as coodinate centers. The formulation is designed for aided inertial navigation systems and gives a high numerical accuracy through all phases of
Bjorkman, W. S., Conrad, B., Schmidt, S. F.   +2 more
core   +1 more source

Improving Foot-Mounted Inertial Navigation Through Real-Time Motion Classification

, 2018
We present a method to improve the accuracy of a foot-mounted, zero-velocity-aided inertial navigation system (INS) by varying estimator parameters based on a real-time classification of motion type.
Kelly, Jonathan, Peretroukhin, Valentin, Wagstaff, Brandon   +2 more
core   +1 more source

All‐3D‐Printed Multi‐Environment Modular Microrobots Powered by Large‐Displacement Dielectric Elastomer Microactuators

Advanced Materials, EarlyView.
Fully 3D‐printed modular microrobots capable of performing a broad range of tasks across diverse environments are demonstrated. The key breakthrough lies in the development of a large‐displacement microactuator for multi‐environment navigation and a mesoscale multimaterial 3D printing platform for on‐demand module fabrication.
Won Jun Song, Yong‐Woo Kang, Yun Hyeok Lee, Junhyung Kim, Bastien F.G. Aymon, Seong‐Yu Choi, Yong Eun Cho, Xiao‐Yun Yan, Shucong Li, Younghoon Lee, Xuanhe Zhao, Yong‐Lae Park, Jeong‐Yun Sun   +12 more
wiley   +1 more source

A Robust Inner and Outer Loop Control Method for Trajectory Tracking of a Quadrotor

Sensors, 2017
In order to achieve the complicated trajectory tracking of quadrotor, a geometric inner and outer loop control scheme is presented. The outer loop generates the desired rotation matrix for the inner loop.
Dunzhu Xia, Limei Cheng, Yanhong Yao
doaj   +1 more source