Multi‐actuator control with modal switching and different disturbance for scanning imaging motion compensation

Long Integral Time Continuous Panorama Scanning Imaging Based on Bilateral Control with Image Motion Compensation

Remote Sensing ◽

10.3390/rs11161924 ◽

2019 ◽

Vol 11 (16) ◽

pp. 1924 ◽

Cited By ~ 1

Author(s):

Dapeng Tian ◽

Yutang Wang ◽

Zhongshi Wang ◽

Fuchao Wang ◽

Huijun Gao

Keyword(s):

Remote Sensing ◽

Spatial Resolution ◽

Motion Compensation ◽

High Spatial Resolution ◽

Compensation Method ◽

Image Motion ◽

Bilateral Control ◽

Image Rotation ◽

Image Translation ◽

Scanning Imaging

Urban remote sensing with moving carriers enables comprehensive monitoring of an urban area. High spatial resolution and wide covering are always required to improve the performance and efficiency of remote sensing. Continuous scanning imaging is a feasible solution. However, imaging motion degrades the performance of a remote sensing system. Rotating motion leads to the loss of key urban morphology information of a panorama imaging. Image translation results in blurry images. For high spatial resolution and high efficiency imaging with low illumination condition, such as imaging at dusk, long-focus lens and long integral time must be further utilized, which makes the problem more severe. In this paper, a novel image motion compensation method is proposed to compensate for image rotation and image translation simultaneously. A quantitative description of image motion, including both image rotation and image translation, is first developed based on the principle of geometrical optics and then analyzed in detail through numerical simulations. Furthermore, a comprehensive image rotation compensation method is developed based on four-channel bilateral control with sliding mode controller, at the same time image translation compensation is performed according to the quantitative relationship of the motion of the scan mirror and image translation compensator. The experimental results show that the proposed method provides effective compensation for image rotation and image translation. This enables acquisition of high spatial resolution urban panoramic images.

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A High Performance and Low Bandwidth Multi-Standard Motion Compensation Design for HD Video Decoder

IEICE Transactions on Electronics ◽

10.1587/transele.e93.c.253 ◽

2010 ◽

Vol E93-C (3) ◽

pp. 253-260 ◽

Cited By ~ 6

Author(s):

Xianmin CHEN ◽

Peilin LIU ◽

Dajiang ZHOU ◽

Jiayi ZHU ◽

Xingguang PAN ◽

...

Keyword(s):

Motion Compensation ◽

High Performance ◽

Video Decoder ◽

Compensation Design

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Study on Motion Compensation Method for W-band UAV MISAR Real-time Imaging

2020 21st International Radar Symposium (IRS) ◽

10.23919/irs48640.2020.9253940 ◽

2020 ◽

Author(s):

Hui Wang ◽

Zhaoyang Zeng ◽

Man Jiang ◽

Shichao Zheng

Keyword(s):

Real Time ◽

Motion Compensation ◽

Compensation Method ◽

Real Time Imaging ◽

W Band

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The Condition for Absolute Stability of an Electroelastic Actuator Control System for Nanomechatronics

Elektrichestvo ◽

10.24160/0013-5380-2020-10-52-58 ◽

2020 ◽

Vol 10 (10) ◽

pp. 52-58

Author(s):

Sergey M. AFONIN ◽

Keyword(s):

Control System ◽

Adaptive Optics ◽

Absolute Stability ◽

Deformation Characteristic ◽

Straight Line Segment ◽

Control Mechanisms ◽

Relative Width ◽

Random Inputs ◽

Deformation Control ◽

Actuator Control

An electroelastic actuator for nanomechatronics is used in nanotechnology, adaptive optics, microsurgery, microelectronics, and biomedicine to actuate or control mechanisms, systems based on the electroelastic effect, and to convert electrical signals into mechanical displacements and forces. In nanomechatronic systems, a piezoactuator is used in scanning microscopy, laser systems, in astronomy for precision alignment, for compensation of temperature, gravitational deformations and atmospheric turbulence, focusing, and stabilizing the image. In this study, a condition for absolute stability of an electroelastic actuator control system for nanomechatronics under deterministic and random inputs is obtained. A number of equilibrium positions in an electroelastic actuator mechatronic control system are found, the totality of which is represented by a straight line segment. The electroelastic actuator’s deformation control system dead band relative width is determined for the actuator’s symmetric and asymmetric hysteresis characteristics. Under deterministic inputs and with fulfilling the condition for the derivative of the nonlinear hysteresis actuator deformation characteristic, the set of equilibrium positions of the electroelastic actuator control system for nanomechatronics is absolutely stable. Under random inputs, the system absolute stability with respect to the mathematical expectations of the electroelastic actuator mechatronic control system equilibrium positions has been determined subject to fulfilling the condition on the derivative of the actuator hysteresis characteristic.

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