Results 211 to 220 of about 11,989 (269)
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IFAC Journal of Systems and Control, 2021
The attitude stabilization precision of inertially stabilized platform (ISP) directly affect the resolution of remote sensing image by stabilizing the airborne remote sensing system and holding the line of sight.
B. Xiang, Quanqi Mu
semanticscholar +1 more source
The attitude stabilization precision of inertially stabilized platform (ISP) directly affect the resolution of remote sensing image by stabilizing the airborne remote sensing system and holding the line of sight.
B. Xiang, Quanqi Mu
semanticscholar +1 more source
AIAA Infotech@Aerospace (I@A) Conference, 2013
Mechanical gimbals are used in UAV to direct cameras to a target area, regardless of the vehicle attitude. We present an approach to replace the mechanical camera gimbal by a wide-angle fisheye lens and a high-resolution optical camera. The proposed article describes a method that computes a conventional camera image from the distorted image of a fish ...
Florian Boehm +2 more
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Mechanical gimbals are used in UAV to direct cameras to a target area, regardless of the vehicle attitude. We present an approach to replace the mechanical camera gimbal by a wide-angle fisheye lens and a high-resolution optical camera. The proposed article describes a method that computes a conventional camera image from the distorted image of a fish ...
Florian Boehm +2 more
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IEEE Transactions on Control Systems Technology, 2021
This brief addresses the single-gimbal control moment gyro (SGCMG) fault modeling, estimation, and tolerant-control steering logic design problem, aiming at enhancing the reliability and safety of spacecraft attitude control systems. The SGCMG is modeled
Qiang Shen +3 more
semanticscholar +1 more source
This brief addresses the single-gimbal control moment gyro (SGCMG) fault modeling, estimation, and tolerant-control steering logic design problem, aiming at enhancing the reliability and safety of spacecraft attitude control systems. The SGCMG is modeled
Qiang Shen +3 more
semanticscholar +1 more source
IEEE Transactions on Circuits and Systems - II - Express Briefs
This brief aims to deal with the CMG gimbal servo system’s velocity tracking problem in the presence of multi-frequency unknown disturbances. To fully comprehend the gimbal servo system, closed-loop uncertainty quantification is first employed.
Yangyang Cui +4 more
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This brief aims to deal with the CMG gimbal servo system’s velocity tracking problem in the presence of multi-frequency unknown disturbances. To fully comprehend the gimbal servo system, closed-loop uncertainty quantification is first employed.
Yangyang Cui +4 more
semanticscholar +1 more source
Gimbal-Less Two-Axis Electromagnetic Microscanner with Twist Mechanism
Micromachines, 2018 We present an electromagnetically driven microscanner based on a gimbal-less twist mechanism. In contrast to conventional microscanners using a gimbal-less leverage mechanism, our device utilizes a gimbal-less twist mechanism to increase the scan angle ...
Yangkyu Park +2 more
exaly +2 more sources
Real-Time Large-Motion Deblurring for Gimbal-Based Imaging Systems
IEEE Journal on Selected Topics in Signal ProcessingRobotic systems employed in tasks such as navigation, target tracking, security, and surveillance often use camera gimbal systems to enhance their monitoring and security capabilities. These camera gimbal systems undergo fast to-and-fro rotational motion
Nisha Varghese +2 more
semanticscholar +1 more source
ISA transactions, 2021
The moving-gimbal effect (MGE) is an important factor that limits the torque accuracy provided by magnetically suspended control moment gyroscope. This work addresses the issues concerning the dynamic behavior of active magnetic bearing (AMB) systems ...
Gang Liu, Yifan Liu, Shiqiang Zheng
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The moving-gimbal effect (MGE) is an important factor that limits the torque accuracy provided by magnetically suspended control moment gyroscope. This work addresses the issues concerning the dynamic behavior of active magnetic bearing (AMB) systems ...
Gang Liu, Yifan Liu, Shiqiang Zheng
semanticscholar +1 more source
Gimbal Angle Reorientation for Nonredundant Single Gimbal Control Moment Gyros
AIAA Guidance, Navigation, and Control (GNC) Conference, 2013This paper deals with a problem of gimbal angle reorientation for a nonredundant control moment gyro (CMG) cluster in a pyramid configuration. There are a finite number of gimbal angle sets for a nonredundant CMG-cluster whose angular momentums are identical.
Donghun Lee +2 more
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IEEE transactions on industrial electronics (1982. Print)
Accurate angular position detection is indispensable for high-precision angular speed output of the gimbal servo system in single gimbal control moment gyro (SGCMG).
Haitao Li, S. Yang, Haifeng Zhang
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Accurate angular position detection is indispensable for high-precision angular speed output of the gimbal servo system in single gimbal control moment gyro (SGCMG).
Haitao Li, S. Yang, Haifeng Zhang
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Neuro-observer based control of double gimbal control moment gyro systems
, 2021In this paper, a new third-order nonlinear dynamics solving the mismatched problem is proposed for double gimbal control moment gyros (DGCMGs) affected by friction and coupling torques, unmodeled dynamics, or parameter uncertainties; the new nonlinear ...
M. Lungu
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