Results 21 to 30 of about 3,144,647 (278)

Summaries of Micro motion Mechanisms

open access: yesJixie chuandong, 1999
At present, micro motion mechanisms are usually actuated by elastic deformation, linear motor, mechanical transmission, electrical magnet and intelligent materials.
罗建勤, 曾韬
doaj   +1 more source

Elliptical heads result in increased glenohumeral translation along with micro-motion of the glenoid component during axial rotation in total shoulder arthroplasty. [PDF]

open access: yesArch Orthop Trauma Surg, 2023
Introduction Elliptical-shaped humeral head prostheses have recently been proposed to reflect a more anatomic shoulder replacement. However, its subsequent effect on micro-motion of the glenoid component is still not understood. Materials and methods Six
Muench LN   +7 more
europepmc   +2 more sources

Development of a 3-DOF Flexible Micro-Motion Platform Based on a New Compound Lever Amplification Mechanism. [PDF]

open access: yesMicromachines (Basel), 2021
In this paper, a flexible micro-operation platform with three degrees of freedom, large stroke, and high precision is designed to meet the higher demands in the fields of biological engineering and medicine. The platform adopts a compound lever mechanism.
Cui F, Li Y, Qian J.
europepmc   +2 more sources

Submillimeter fiber robots capable of decoupled macro-micro motion for endoluminal manipulation. [PDF]

open access: yesSci Adv
Endoluminal and endocavitary intervention via natural orifices of the body is an emerging trend in medicine, further underpinning the future of early intervention and precision surgery. This motivates the development of small continuum robots to navigate
Zhou C   +13 more
europepmc   +2 more sources

Efficient Classification of Birds and Drones Considering Real Observation Scenarios Using FMCW Radar [PDF]

open access: yesJournal of Electromagnetic Engineering and Science, 2021
In this study, we consider real observation scenarios and propose an efficient method to accurately distinguish drones from birds using features obtained from their micro-Doppler (MD) signatures.
Se-Won Yoon   +7 more
doaj   +1 more source

Space Targets with Micro-Motion Classification Using Complex-Valued GAN and Kinematically Sifted Methods

open access: yesRemote Sensing, 2023
Space target classification based on micro-motion characteristics has become a subject of great interest in the field of radar, particularly when using deep learning techniques. However, in practical applications, the ability of deep learning is hampered
Lixun Han, Cunqian Feng, Xiaowei Hu
doaj   +1 more source

Feature Extraction of Rotor Blade Targets Based on Phase Compensation in a Passive Bistatic Radar

open access: yesLeida xuebao, 2021
As a stable and widely covered signal resource, a Global Navigation Satellite System (GNSS) plays an important part in micro-Doppler extraction in a near field. This paper aims at the problems associated with rotor blade target recognition and proposes a
Zibo ZHOU   +5 more
doaj   +1 more source

A micro motion sensing system for micromanipulation tasks [PDF]

open access: yesSensors and Actuators A: Physical, 2012
An optical-based motion sensing system has been developed for real-time sensing of instrument motion in micromanipulation. The main components of the system consist of a pair of position sensitive detectors (PSD), lenses, an infrared (IR) diode that illuminates the workspace of the system, a non-reflective intraocular shaft, and a white reflective ball
Tan, U Xuan   +5 more
openaire   +3 more sources

Three-Dimensional Micro-Motion Feature Extraction of the Vibrating Target Based on Multi-Channel Radar in the Terahertz Band. [PDF]

open access: yesSensors (Basel), 2019
Vibration induces a micro-Doppler effect, which contains crucial motion information and features of the micro-motion target. However, the traditional radar can only acquire micro-motion information in the radial direction.
Tang B, Yang Q, Zhang Y, Deng B, Wang H.
europepmc   +2 more sources

Micro-Motion Parameter Extraction of Multi-Scattering-Point Target Based on Vortex Electromagnetic Wave Radar

open access: yesRemote Sensing, 2022
In addition to traditional linear Doppler shift, the angular Doppler shift in vortex electromagnetic wave (VEMW) radar systems carrying orbital angular momentum (OAM) can provide more accurate target identification micro-motion parameters, especially the
Lijun Bu   +5 more
semanticscholar   +1 more source

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