Design and Precision Analysis of Muzzle Angle Measurement System

2011 ◽  
Vol 128-129 ◽  
pp. 1378-1381
Author(s):  
Jian Ping Zhou ◽  
Xiao Yun Wu ◽  
Peng Fei Zhang ◽  
Guo Hua Gu
Keyword(s):  
Light Source ◽  
Measurement System ◽  
Measurement Method ◽  
Angle Measurement ◽  
Measurement Technology ◽  
Optical Range ◽  
Precision Analysis ◽  
Traditional Methods ◽  
Two Dimension ◽  
New System

The traditional muzzle angle measurement method measured by optical range quadrant can’t satisfy the demand. A muzzle angle auto-measurement method based on collimation light source and PSD two-dimension sensors is provided. Adopted by the auto-measurement technology, the precision, efficiency and velocity of measurement are all improved, which solves the problems of traditional methods. The errors and precision of the new system are analyzed. According these analysis and calculation, the precision of this measurement system can gain the measurement ends.

Research on Aero-Engine Lubricating Real-Time Oil Measurement Method

2014 ◽  
Vol 644-650 ◽  
pp. 840-844
Author(s):  
Bao Feng Shan ◽  
Fan Chen Mo ◽  
Jing Chun Li ◽  
Zhi Ping Tian
Keyword(s):  
Real Time ◽  
Measurement System ◽  
Measurement Method ◽  
Spatial Databases ◽  
Rapid Development ◽  
Time Measurement ◽  
Lubricating Oil ◽  
Measurement Technology ◽  
Real Time Measurement ◽  
Aero Engine

With the rapid development of aviation technology, the performance of aero-engine continues to increase in China. However, Chinese Aero-engine lubricating oil real-time measurement technology is not mature, active airplane almost have no Aero-engine lubricating oil real-time measurement system, It requires further in-depth study.By research on Aero-engine lubricating oil measurement technology. First, it outlined the method and principles of measurement, and based on UG Open the analysis of Aero-engine lubricating oil system was developed. Through which an analysis of the model of Aero-engine lubricating oil, the spatial databases about sensor depth of immersion oil, aircraft attitude and fuel volume were built.,which can provide the data for the subsequent lubricating real-time oil measuring analysis .

Research of Non-Contact Stiffness Measurement Technology

2014 ◽  
Vol 621 ◽  
pp. 331-336
Author(s):  
Wen Xuan Liu ◽  
Hui Feng Wang ◽  
Guang Lin Wang ◽  
Dong Xiang Shao
Keyword(s):  
Measurement System ◽  
Elastic Element ◽  
Measurement Method ◽  
Measurement Accuracy ◽  
Contact Stiffness ◽  
Test System ◽  
Measurement Technology ◽  
Servo Valve ◽  
Stiffness Measurement ◽  
Definition Of

This article describes the elastic element of the servo valve, elaborates the definition of the stiffness of elastic element, analyzes the characteristics of existing rigidity measurement system, points out the limitations of the existing rigidity measurement system when it measures the large-stiffiness elastic element, utilizes a new measuring principle based on the existing stiffness test systems, uses the more accurate laser displacement measurement method to overcome the weaknesses of the existing stiffness test system, improves the measurement accuracy, makes stiffness measurements more accurate and promotes the stiffness measurement technology of the servo valve elastic element.

scholarly journals Torque Measurement Technology by Using a Magnetostrictive Ring and Multiple Magnets

Actuators ◽  
2021 ◽  
Vol 10 (6) ◽  
pp. 124
Author(s):  
Feng Xu ◽  
Vivek Kumar Dhimole ◽  
Chongdu Cho
Keyword(s):  
Kalman Filter ◽  
Measurement Method ◽  
Twist Angle ◽  
Angle Measurement ◽  
Measurement Technology ◽  
Torque Measurement ◽  
Dynamic Conditions ◽  
Complementary Filter ◽  
Applied Torque

A torque measurement method that combines the inverse magnetostrictive effect with twist angle measurement has been proposed in this paper. A Kalman filter and complementary filter are applied to significantly reduce the noises and errors in the proposed method. This new measurement block can detect the applied torque with an error of less than 1%. The proposed measurement method can be used in static and dynamic conditions.

Researchment on Valve Sleeve Bore’s Cylindricity Pneumatic Measurement Technology Based on Error Compensation

2013 ◽  
Vol 579-580 ◽  
pp. 476-481
Author(s):  
Qi Wen Zeng ◽  
Guang Lin Wang
Keyword(s):  
Measurement System ◽  
Error Compensation ◽  
Measurement Method ◽  
Maximum Error ◽  
Measurement Technology ◽  
Compensation Model

Raising a pneumatic measurement method to measure the valve sleeve bores cylindricity based on error compensation. Analysis related errors of the raised measurement method, determined the maximum error, and setting up the error compensation model to the maximum error, designed the measurement system, related experiment has been conducted, which verified the correctness of the measurement method and the accuracy of the measurement system.

scholarly journals An Optical Frequency Domain Angle Measurement Method Based on Second Harmonic Generation

Sensors ◽  
2021 ◽  
Vol 21 (2) ◽  
pp. 670
Author(s):  
Wijayanti Dwi Astuti ◽  
Hiraku Matsukuma ◽  
Masaru Nakao ◽  
Kuangyi Li ◽  
Yuki Shimizu ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Second Harmonic Generation ◽  
Frequency Domain ◽  
Harmonic Generation ◽  
Measurement Method ◽  
Second Harmonic ◽  
Angle Measurement ◽  
Laser Source ◽  
Optical Frequency ◽  
Measurable Range

This paper proposes a new optical angle measurement method in the optical frequency domain based on second harmonic generation with a mode-locked femtosecond laser source by making use of the unique characteristic of the high peak power and wide spectral range of the femtosecond laser pulses. To get a wide measurable range of angle measurement, a theoretical calculation for several nonlinear optical crystals is performed. As a result, LiNbO3 crystal is employed in the proposed method. In the experiment, the validity of the use of a parabolic mirror is also demonstrated, where the chromatic aberration of the focusing beam caused the localization of second harmonic generation in our previous research. Moreover, an experimental demonstration is also carried out for the proposed angle measurement method. The measurable range of 10,000 arc-seconds is achieved.

scholarly journals Non-Contact Respiration Measurement Method Based on RGB Camera Using 1D Convolutional Neural Networks

Sensors ◽  
2021 ◽  
Vol 21 (10) ◽  
pp. 3456
Author(s):  
Hyeon-Sang Hwang ◽  
Eui-Chul Lee
Keyword(s):  
Measurement Method ◽  
Respiratory Diseases ◽  
Region Of Interest ◽  
Average Error ◽  
Measurement Technology ◽  
Altman Analysis ◽  
Clinical Scenarios ◽  
Actual Environment ◽  
Error Bias ◽  
Robust To Noise

Conventional respiration measurement requires a separate device and/or can cause discomfort, so it is difficult to perform routinely, even for patients with respiratory diseases. The development of contactless respiration measurement technology would reduce discomfort and help detect and prevent fatal diseases. Therefore, we propose a respiration measurement method using a learning-based region-of-interest detector and a clustering-based respiration pixel estimation technique. The proposed method consists of a model for classifying whether a pixel conveys respiration information based on its variance and a method for classifying pixels with clear breathing components using the symmetry of the respiration signals. The proposed method was evaluated with the data of 14 men and women acquired in an actual environment, and it was confirmed that the average error was within approximately 0.1 bpm. In addition, a Bland–Altman analysis confirmed that the measurement result had no error bias, and regression analysis confirmed that the correlation of the results with the reference is high. The proposed method, designed to be inexpensive, fast, and robust to noise, is potentially suitable for practical use in clinical scenarios.

Design of Measurement System of the Center of Gravity

2013 ◽  
Vol 706-708 ◽  
pp. 733-736
Author(s):  
Fang Li
Keyword(s):  
Measurement System ◽  
Center Of Gravity ◽  
Actual Position ◽  
Ideal Position ◽  
The Future ◽  
The Difference ◽  
New System ◽  
The Ideal

It is very difficult to confirm the position of the center of gravity irregular object.This paper introduces a new system,which can be used in measuring and adjusting of the center of gravity.The irregular object was put on the support parts,then the center of gravity was given.When the actual position was compared with the ideal position,the difference was given. Until actual position and ideal position were coincided,the machining was continuing. Matlab was programmed in this measure system. It will be applied widely in the future.

Research on Online Measurement Method of Hole Diameter and Position

2013 ◽  
Vol 347-350 ◽  
pp. 197-200
Author(s):  
Yu Gong ◽  
Jing Cai Zhang ◽  
Hong Qi Liu
Keyword(s):  
Comparative Analysis ◽  
Measurement System ◽  
Measurement Method ◽  
Measurement Methods ◽  
Hole Diameter ◽  
Laser Sensor ◽  
Online Measurement ◽  
Online Detection ◽  
Ccd Imaging ◽  
Inductive Sensor

In this paper, research on measurement methods of hole during the parts online detection has been made. Both diameter and position of the hole are going to be detected in the same measurement system. In order to obtain higher accuracy and efficiency, a comparative analysis test of using the contact probes, the inductive sensor, the laser sensor, the forward and back lighting CCD imaging have been achieved. Results show that the contact measurement using inductive sensor is more suitable for the system, for the reason that it has higher reliability and efficiency.

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