Results 21 to 30 of about 42,193 (264)

Enhanced Cell Controller for Aerospace Manufacturing

Advances in Robotics & Automation, 2016
Aerospace manufacturing industry is unique in that production typically focuses on high variety and quality but extremely low volume. Manufacturing processes are also sometimes unique and not repeatable and, hence, costly. Production is getting more expensive with the introduction of industrial robots and their cells.
Asif, Seemal, Webb, Philip
openaire   +2 more sources

Autonomous Landing of a UAV on a Moving Platform Using Model Predictive Control

Drones, 2018
Developing methods for autonomous landing of an unmanned aerial vehicle (UAV) on a mobile platform has been an active area of research over the past decade, as it offers an attractive solution for cases where rapid deployment and recovery of a fleet of ...
Yi Feng, Cong Zhang, Stanley Baek, Samir Rawashdeh, Alireza Mohammadi   +4 more
doaj   +1 more source

Reliability-Adaptive Control of Aerospace Electromechanical Actuators with Coupled Degradation via Stochastic MPC

Mathematics
Electromechanical Actuators (EMAs) are critical components in More-Electric Aircraft (MEA) and Reusable Launch Vehicles (RLVs), yet they remain vulnerable to jamming and fatigue failures under high-stress flight maneuvers.
Le Qi
doaj   +1 more source

IMPLEMENTATION STRATEGY OF VISIBLE AND NEAR-INFRARED IMAGING SPECTROMETER ON YUTU-2 ROVER BASED ON VISION MEASUREMENT TECHNOLOGY [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2020
The Chang'e-4 successfully landed on the far side of the moon in January 2019. By the 12th lunar day, its Yutu-2 rover had achieved a breakthrough travel distance of greater than 300 m.
T. Yu, Z. Liu, Z. Rong, Y. Wang, J. Wang, S. Gou, L. Li, W. Wan, X. He, K. Di, R. Ke, K. Zhang, Y. You   +12 more
doaj   +1 more source

Coordinated Standoff Target Tracking Guidance Method for UAVs

IEEE Access, 2018
We need a coordinated control method to continuously track a moving target using a group of UAVs. In this paper, we study the predicted reference point guidance method, where the target is considered to move with a constant velocity in a very short time ...
Zhuofan Xu, Ruixuan Wei, Xiaolin Zhao, Shulei Wang   +3 more
doaj   +1 more source

Navigation Grade MEMS IMU for A Satellite

Micromachines, 2021
This paper presents a navigation grade micro-electromechanical system (MEMS) inertial measurement unit (IMU) that was successfully applied for the first time in the Lobster-Eye X-ray Satellite in July 2020.
Wanliang Zhao, Yuxiang Cheng, Sihan Zhao, Xiaomao Hu, Yijie Rong, Jie Duan, Jiawei Chen   +6 more
doaj   +1 more source

Angle-Only Cooperative Orbit Determination Considering Attitude Uncertainty

Sensors, 2023
In this paper, a novel concept for cooperative orbit determination (OD) using inter-spacecraft angle-only measurements is proposed. Different from the conventional cooperative OD that only estimates orbit states, the attitude of the observer spacecraft ...
Yishuai Shi, Junkui Wang, Chuankai Liu, Yangjun Wang, Qingchao Xu, Xingyu Zhou   +5 more
doaj   +1 more source

Characterization of Defect Distribution in an Additively Manufactured AlSi10Mg as a Function of Processing Parameters and Correlations with Extreme Value Statistics

Advanced Engineering Materials, EarlyView.
Predicting extreme defects in additive manufacturing remains a key challenge limiting its structural reliability. This study proposes a statistical framework that integrates Extreme Value Theory with advanced process indicators to explore defect–process relationships and improve the estimation of critical defect sizes. The approach provides a basis for
Muhammad Muteeb Butt, Varma Kvvssn, Hossein Laieghi, Zia Uddin, Peyman Ansari, E. Kıvanç Sadak, Can Barış Toprak, Hüseyin Kızıl, Enrico Salvati   +8 more
wiley   +1 more source

Light‐Assisted 3D Printing Techniques and Photocrosslinking Strategies: Recent Advances in Musculoskeletal Tissue Engineering

Advanced Engineering Materials, EarlyView.
In this review, the current state of light‐assisted 3D printing as it pertains to engineering musculoskeletal tissues including bone, cartilage, skeletal muscle, tendon, and ligaments is summarized. Common printing techniques, photoreactive materials, and study design choices are compiled and reviewed.
Meagan Morgan, Bin Zhang, Roger Narayan
wiley   +1 more source

Implementation of unknown parameter estimation procedure for hybrid and discrete non‐linear systems

IET Radar, Sonar & Navigation
The application of the hybrid extended Kalman filter (HEKF), hybrid unscented Kalman filter (HUKF), hybrid particle filter (HPF), and hybrid extended Kalman particle filter (HEKPF) is discussed for hybrid non‐linear filter problems, when prediction ...
Mahdi Razm‐Pa
doaj   +1 more source