A Micro Capacitance Measurement System with Ultra-High Accuracy and Fast Speed

The ship electric field has become a new physical field which is widely concerned at home and abroad in recent years. For the research of ship electric field, one of the most effective methods is to measure it underwater. According to the analysis of ship electric field signal’s characteristics, the ship electric field measurement system based on MSP430F149 was designed and the key technologies of software and hardware were also presented in this paper. The results of experiment demonstrated that the system could effectively measure the ship electric field signal in a low SNR. Meanwhile, it has the advantages of low power consumption, high accuracy and credible.

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Large capacitance measurement system based on a dual balance bridge

2016 Conference on Precision Electromagnetic Measurements (CPEM 2016) ◽

10.1109/cpem.2016.7540631 ◽

2016 ◽

Cited By ~ 1

Author(s):

Kang Wu ◽

Yalu Li ◽

Xiaojun Yan ◽

You Li

Keyword(s):

Measurement System ◽

Capacitance Measurement ◽

Balance Bridge ◽

Large Capacitance

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High-Accuracy and Fast-Speed MPPT Methods for PV String Under Partially Shaded Conditions

IEEE Transactions on Industrial Electronics ◽

10.1109/tie.2015.2465897 ◽

2016 ◽

Vol 63 (1) ◽

pp. 235-245 ◽

Cited By ~ 85

Author(s):

Yunping Wang ◽

Ying Li ◽

Xinbo Ruan

Keyword(s):

High Accuracy ◽

Fast Speed

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Automated High-Accuracy Phase Measurement System

IEEE Transactions on Instrumentation and Measurement ◽

10.1109/tim.1983.4315047 ◽

1983 ◽

Vol 32 (1) ◽

pp. 227-231 ◽

Cited By ~ 22

Author(s):

S. Stein ◽

D. Glaze ◽

J. Levine ◽

J. Gray ◽

D. Hilliard ◽

...

Keyword(s):

Measurement System ◽

Phase Measurement ◽

High Accuracy

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A monocular visual measurement system for UAV probe-and-drogue autonomous aerial refueling

International Journal of Intelligent Computing and Cybernetics ◽

10.1108/ijicc-06-2017-0067 ◽

2018 ◽

Vol 11 (2) ◽

pp. 166-180 ◽

Cited By ~ 2

Author(s):

Long Xin ◽

Delin Luo ◽

Han Li

Keyword(s):

Measurement System ◽

Feature Matching ◽

Perspective Transformation ◽

High Accuracy ◽

Noise Elimination ◽

Aerial Refueling ◽

Visual Measurement ◽

Matching Algorithm ◽

Content Type ◽

Elimination Algorithm

PurposeThe purpose of this paper is to develop a monocular visual measurement system for autonomous aerial refueling (AAR) for unmanned aerial vehicle, which can process images from an infrared camera to estimate the pose of the drogue in the tanker with high accuracy and real-time performance.Design/methodology/approachMethods and techniques for marker detection, feature matching and pose estimation have been designed and implemented in the visual measurement system.FindingsThe simple blob detection (SBD) method is adopted, which outperforms the Laplacian of Gaussian method. And a novel noise-elimination algorithm is proposed for excluding the noise points. Besides, a novel feature matching algorithm based on perspective transformation is proposed. Comparative experimental results indicated the rapidity and effectiveness of the proposed methods.Practical implicationsThe visual measurement system developed in this paper can be applied to estimate the pose of the drogue with a fast speed and high accuracy and it is a feasible measurement strategy which will considerably increase the autonomy and reliability for AAR.Originality/valueThe SBD method is used to detect the features and a novel noise-elimination algorithm is proposed. Besides, a novel feature matching algorithm based on perspective transformation is proposed which is robust and accurate.

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Pose Estimation of a Six Degrees of Freedom Pipe-Bender using a 3D-Visual Measurement System of High Accuracy

IFToMM International Symposium on Robotics and Mechatronics ◽

10.3850/978-981-07-7744-9_044 ◽

2013 ◽

Author(s):

E. Castillo-Castaneda

Keyword(s):

Pose Estimation ◽

Measurement System ◽

Degrees Of Freedom ◽

High Accuracy ◽

Visual Measurement ◽

Six Degrees Of Freedom

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A Differential Measurement System for Surface Topography Based on a Modular Design

Applied Sciences ◽

10.3390/app10041536 ◽

2020 ◽

Vol 10 (4) ◽

pp. 1536

Author(s):

Fang Cheng ◽

Jingwu Zou ◽

Hang Su ◽

Yin Wang ◽

Qing Yu

Keyword(s):

Surface Topography ◽

Measurement System ◽

Modular Design ◽

Measurement Range ◽

High Accuracy ◽

The Novel ◽

Large Area ◽

Differential Measurement ◽

Motion Error ◽

Novel Concept

In this paper, a novel design of a surface topography measurement system is proposed, to address the challenge of accurate measurement in a relatively large area. This system was able to achieve nanometer-scale accuracy in a measurement range of 100 mm × 100 mm. The high accuracy in a relatively large area was achieved by implementing two concepts: (1) A static coordinate system was configured to minimize the Abbe errors. (2) A differential measurement configuration was developed by setting up a confocal sensor and a film interferometry module to separate the motion error. In order to accommodate the differential measurement probes from both sides of the central stage and ensure the system rigidity with balanced supports, separate linear guides were introduced in this system. Therefore, the motion Degree of Freedom (DoF) was analyzed in order to address the challenge of an over-constrained mechanism due to multiple kinematic pairs. An optimal configuration and a quick assembly process were proposed accordingly. The experimental results presented in this paper showed that the proposed modular measurement system was able to achieve 10 nm accuracy in measuring the surface roughness and 100 nm accuracy in measuring the step height in the range of 100 mm × 100 mm. In summary, the novel concept of this study is the build of a high-accuracy system with conventional mechanical components.

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Experiment and Simulation for Grid-Connected Photovoltaic Micro-Invereter

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.448-453.1480 ◽

2013 ◽

Vol 448-453 ◽

pp. 1480-1485

Author(s):

Li Jie Yin ◽

Ya Zhen ◽

Qi Li Fan

Keyword(s):

Simulation Model ◽

Control Algorithm ◽

Single Phase ◽

High Accuracy ◽

Control Parameters ◽

Working Process ◽

Topology Structure ◽

Matlab Software ◽

Fast Speed ◽

Micro Inverter

A modeling method of single-phase grid-connected photovoltaic micro-inverter is presented in this paper,which depends on the topology structure of fly-back converter. Simulation of the micro-inverter is performed using Matlab software, which has the virtues of high accuracy and fast speed. Prototype experiment results show that the simulation model can be a true reflection of the working process of a micro-inverter, and could be used to verify the control algorithm and select the control parameters.

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