Results 41 to 50 of about 194,748 (302)

A Novel Movable UWB Localization System Using UAVs

open access: yesIEEE Access, 2022
Recently, interest in ultrawideband (UWB)-based localization systems has increased in various application fields. However, since UWB anchors are usually fixed, they work only within the limited range that UWB measurement signals can reach.
Sungtae Moon, Wonkeun Youn
doaj   +1 more source

Hierarchical Multi‐Material Architectures With Gradient Design for Dynamic‐Range Flexible Tactile Sensing

open access: yesAdvanced Materials Technologies, EarlyView.
Hierarchical multi‐material TPMS lattices are engineered as flexible tactile sensors by combining soft and stiff elastomeric layers with a conformal conductive coating. The bilayer architecture delivers sensitivity at low pressures while maintaining a broad detectable range under large loads, enabling reliable pressure and vibration monitoring for ...
Reza Noroozi   +3 more
wiley   +1 more source

Research on Gradient-Descent Extended Kalman Attitude Estimation Method for Low-Cost MARG

open access: yesMicromachines, 2022
Aiming at the problem of the weak dynamic performance of the gradient descent method in the attitude and heading reference system, the susceptibility to the interference of accelerometers and magnetometers, and the complex calculation of the nonlinear ...
Ning Liu   +4 more
doaj   +1 more source

An Attitude and Heading Reference System (AHRS) based in a dual filter

open access: yesETFA2011, 2011
This paper describes the design, analysis, and experimental results of an Attitude and Heading System based on a Dual Kalman Filtering technique. The presented scheme is suitable for implementation using low cost sensors. Attitude determination systems are essential for real time vehicle navigation, guidance and control applications.
Munguía Alcalá, Rodrigo Francisco   +1 more
openaire   +2 more sources

Bridging Optical and Mechanical Metamaterial/Metasurface Realms Toward Integrated Meta‐Systems

open access: yesAdvanced Optical Materials, EarlyView.
This perspective describes the rise of metamaterials in the field of materials science, specifically with optical and mechanical functionality. Fundamentals of both optical and mechanical metamaterials are discussed with a review of state‐of‐the‐art metamaterial science.
Justin Brackenridge   +2 more
wiley   +1 more source

Sine Rotation Vector Method for Attitude Estimation of an Underwater Robot

open access: yesSensors, 2016
This paper describes a method for estimating the attitude of an underwater robot. The method employs a new concept of sine rotation vector and uses both an attitude heading and reference system (AHRS) and a Doppler velocity log (DVL) for the purpose of ...
Nak Yong Ko, Seokki Jeong, Youngchul Bae
doaj   +1 more source

MsWH: A Multi-Sensory Hardware Platform for Capturing and Analyzing Physiological Emotional Signals

open access: yesSensors, 2022
This paper presents a new physiological signal acquisition multi-sensory platform for emotion detection: Multi-sensor Wearable Headband (MsWH). The system is capable of recording and analyzing five different physiological signals: skin temperature, blood
David Asiain   +2 more
doaj   +1 more source

Unilateral Ankle‐Foot Exoneuromusculoskeleton with Balance‐Sensing Feedback for Self‐Help Telerehabilitation after Stroke

open access: yesAdvanced Robotics Research, EarlyView.
This study introduces a hybrid robot that integrates mechanical assistance by musculoskeletons (i.e., soft pneumatic muscle with rigid exoskeletal extensions), neuromuscular electrical stimulation, and vibrotactile feedback in a lightweight wearable mechatronic complex applicable to the paretic ankle–foot poststroke for gait restoration. The system can
Fuqiang Ye   +16 more
wiley   +1 more source

Attitude Calculation of AHRS Based on Geomagnetic Field Adaptive Correction

open access: yesXibei Gongye Daxue Xuebao, 2019
In the attitude and heading reference system (AHRS), the output noise of MEMS gyroscope is too large, zero drift can not be eliminated completely, and the output of angular rate is easy to be interfered, which leads to low accuracy and large accumulated ...

doaj   +1 more source

Aircraft control system [PDF]

open access: yes, 1973
An aircraft control system is described which is particularly suited to rotary wing aircraft. Longitudinal acceleration and course rate commands are derived from a manual control stick to control translational velocity of the aircraft along a flight path.
Koziol, J. S., Jr.   +3 more
core   +1 more source

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