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Performance Optimization for a 3-DOF Micro-Motion Device
Advanced Materials Research, 2011Traditional parallel manipulators suffer from errors due to backlash, hysteresis, and vibration in the mechanical joints. In this paper, a new 3SPS+RPR spatial compliant mechanism which has three degrees of freedom (DOF) and can generate motions in a microscopic scale is proposed. It can be utilized for biomedical engineering and fiber optics industry.
Dan Zhang, Irene Fassi, Peigang Jiang
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Design and PID Control of Piezoelectric Micro-motion Stage
2018 IEEE International Conference on Intelligence and Safety for Robotics (ISR), 2018At present, the size of piezoelectric micro-motion stage is relatively large, which is difficult to be applied to the MEMS. For this reason, a piezoelectric micro-motion stage based on lever amplification mechanism is proposed in this paper, and the external dimension is only $\pmb{ 57}\mathbf{mm}\times \pmb{57}\mathbf{mm}\times$ 5mm.
Feng Sun 0011 +4 more
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Estimation of parameters of the moving target with micro motion in geosar
2017 IEEE International Geoscience and Remote Sensing Symposium (IGARSS), 2017In order to solve the parameters estimation problem caused by the moving target with the micro motion in the GEOSAR model, a technique based on time-frequency distribution and least squares estimation is introduced. The model of micro-motion part can be seen as a narrow band stochastic process, which is close to the reality of the motion. The method is
Jindong Yu +4 more
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Event-based laser speckle correlation for micro motion estimation
Optics Letters, 2021Micro motion estimation has important applications in various fields such as microfluidic particle detection and biomedical cell imaging. Conventional methods analyze the motion from intensity images captured using frame-based imaging sensors such as the complementary metal–oxide semiconductor (CMOS) and the charge-coupled device (CCD). Recently, event-
Zhou Ge +3 more
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Optimum design of a parallel micro-motion stage
SPIE Proceedings, 2006With the development of a parallel micro motion stage, a Pseudo-Rigid-Body model is derived, and simplified as a constant Jacobian matrix, an optimization based on condition number is then made to establish structure parameters, so as to achieve kinematic performance of both workspace and resulotion as demand, while the scale of this stage is ...
Kunpeng Song +3 more
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UWB pulse radar for micro-motion detection
2016 8th International Conference on Ultrawideband and Ultrashort Impulse Signals (UWBUSIS), 2016This paper presents a micro-motion detection based on coherent ultra-wide band pulse radar, in the context of improving the general imaging pipeline of through-the-wall radar. The proposed micro-motion detection principle is based on the measurement of the phase difference of the UWB carrier waveform between the transmitted and the received pulse ...
Vincent Merelle +3 more
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Micro-motion Analysis Based on HRRP Sequence
IET International Radar Conference 2013, 2013Since micro-motion of a target will affect the positions and phases of scatters in high resolution range profiler (HRRP), the methods of micro-motion extraction from the signals of range gates cannot be used. According to the variation features of scatter position, we treat the HRRPs as image sequence and an improved Viterbi algorithm is used to track ...
null Chen Da-qing +3 more
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Design of a stiffness-adjustable micro-motion stage
2019 IEEE 9th Annual International Conference on CYBER Technology in Automation, Control, and Intelligent Systems (CYBER), 2019The manufacturing errors of flexure hinge are accumulated in their operation, which is not conducive to the control of the motion stage and the high manufacturing accuracy leads to high costs. Therefore, a novel micro-motion stage with adjustable stiffness is proposed to ensure that the motion stage has better performance at low cost.
Rui-Qi Li, Bai-Sheng Wu, Zhi-Jun Yang
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Analysis of micro-motion model for radar target
2017 Progress In Electromagnetics Research Symposium - Spring (PIERS), 2017The mechanical dynamics in addition to its bulk translation of the target or any structure on the target is called micro-motion. Micro-motion evokes a frequency modulation in radar echo known as micro-Doppler (m-D) effect which may help to detect specific structures of a target with micro-motion, leading a potential way to realize target identification
Wenchao Li, Boli Xiong, Gangyao Kuang
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