Results 21 to 30 of about 22,539 (211)

Gimbal Influence on the Stability of Exterior Orientation Parameters of UAV Acquired Images

open access: yesSensors, 2017
In this paper, results from the analysis of the gimbal impact on the determination of the camera exterior orientation parameters of an Unmanned Aerial Vehicle (UAV) are presented and interpreted.
Mateo Gašparović, Luka Jurjević
doaj   +1 more source

Analyze Angle of the Camera Payload LSU-02 in Mission of Aerial Photo [PDF]

open access: yesE3S Web of Conferences, 2019
In carrying out its mission, LAPAN Surveillance UAV version 2 (LSU-02) was equipped with a camera payload sensor mounted on a gimbal system. When taking upright aerial photos according to photogrammetric requirements, the axis of the aerial camera must ...
Sunar   +3 more
doaj   +1 more source

Anti-Disturbance Control Based on Cascade ESO and Sliding Mode Control for Gimbal System of Double Gimbal CMG

open access: yesIEEE Access, 2020
Disturbance torque and unmodeled dynamics are the main important factors which affect the angular velocity precision of a gimbal system in double gimbal control moment gyro (DGCMG). In this paper, a compound control method combining reduced-order cascade
Haitao Li, Jiangkun Yu
doaj   +1 more source

Versatile Low-Cost Volumetric 3D Ultrasound Imaging Using Gimbal-Assisted Distance Sensors and an Inertial Measurement Unit

open access: yesSensors, 2020
This study aims at creating low-cost, three-dimensional (3D), freehand ultrasound image reconstructions from commercial two-dimensional (2D) probes.
Taehyung Kim   +6 more
doaj   +1 more source

Line of Sight and Image Motion Compensation for Step and Stare Imaging System

open access: yesApplied Sciences, 2020
In recent years, applications such as marine search and rescue, border patrol, etc. require electro-optical equipment to have both high resolution and precise geographic positioning abilities.
Jihong Xiu   +4 more
doaj   +1 more source

Single Axis Piezoceramic Gimbal [PDF]

open access: yesJournal of Intelligent Material Systems and Structures, 2001
This paper describes the fabrication, testing, and analysis of a single axis piezoceramic gimbal. The fabrication process consists of pre-stressing a piezoceramic wafer using a high-temperature thermoplastic polyimide and a metal foil. The differential thermal expansion between the ceramic and metal induces a curvature.
Garnett Horner, Barmac Taleghani
openaire   +1 more source

High-Precision Anti-Disturbance Gimbal Servo Control for Control Moment Gyroscopes via an Extended Harmonic Disturbance Observer

open access: yesIEEE Access, 2018
In control moment gyroscopes (CMGs), the gimbal is expected to rotate at a low speed with high precision so that high-precision gyroscopic torque can be generated to realize high-precision spacecraft attitude control.
Liya Huang, Zhong Wu, Kan Wang
doaj   +1 more source

Steering law considering biased loads for control moment gyroscopes

open access: yesMechanical Engineering Journal, 2015
A new steering law of a pyramid configuration of four control moment gyroscopes (CMGs) is proposed to suppress radical motion of gimbals, reduce the gimbal angular displacement and level the biased ones of the four CMGs.
Yasuyuki NANAMORI, Masaki TAKAHASHI
doaj   +1 more source

Gimbal Axes Control with PID Controllers

open access: yesGazi Üniversitesi Fen Bilimleri Dergisi, 2023
Gimbal is a system in missiles that allows the seeker to lock onto the target and follow it and increases the angle of view with its mobility in two axes.
Murat ŞAHİN
doaj   +1 more source

Interval Type-2 Fuzzy Sliding-Mode Control of Three-Axis Stabilization Gimbal

open access: yesIEEE Access, 2020
Aiming at the attitude control problem of three-axis stabilization gimbal, an algorithm combining interval type-2 fuzzy control and sliding-mode control was designed.
Run Ye, Bin Yan, Kaibo Shi, Maoxuan Chen
doaj   +1 more source

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