Pub Date : 2021-10-29DOI: 10.1109/ICEMI52946.2021.9679553
Cheng Chen, Peng Ye, Shuang Liao, Lin Xu, J. Zhang, Feng Tan
A hybrid analog-digital phase-locked loop (PLL) takes the advantage of flexibility and precision, and is inherently suited for integration with digital systems because of the digital interfaces in its structure. The hybrid analog-digital PLL studied in this paper consists of an analog phase detector (PD), an analog low noise amplifier (LNA), an analog-to-digital converter (ADC), a digital loop filter, a digital controlled oscillator, and a frequency measurement module. The hybrid structure makes it difficult to model the phase noise characteristics of this type of hybrid PLL, to overcome this problem, the method of equivalent a discrete section to a continuous one was used. And the linear frequency domain model of the hybrid analog-digital PLL was presented. In this model, the contribution of each noise source to the total phase noise can be calculated, once the phase noise property of each main noise source is obtained. Validation of this model was performed by comparing the numerical simulation results and the measurements on the prototype. The experiment results showed that the phase noise predicted by the model agrees with that of the measured in our prototype. The potential application of the model proposed in this paper is to be used to design a hybrid analog-digital PLL with promising phase noise performance.
{"title":"Analysis and Modeling of Hybrid Analog-digital PLL","authors":"Cheng Chen, Peng Ye, Shuang Liao, Lin Xu, J. Zhang, Feng Tan","doi":"10.1109/ICEMI52946.2021.9679553","DOIUrl":"https://doi.org/10.1109/ICEMI52946.2021.9679553","url":null,"abstract":"A hybrid analog-digital phase-locked loop (PLL) takes the advantage of flexibility and precision, and is inherently suited for integration with digital systems because of the digital interfaces in its structure. The hybrid analog-digital PLL studied in this paper consists of an analog phase detector (PD), an analog low noise amplifier (LNA), an analog-to-digital converter (ADC), a digital loop filter, a digital controlled oscillator, and a frequency measurement module. The hybrid structure makes it difficult to model the phase noise characteristics of this type of hybrid PLL, to overcome this problem, the method of equivalent a discrete section to a continuous one was used. And the linear frequency domain model of the hybrid analog-digital PLL was presented. In this model, the contribution of each noise source to the total phase noise can be calculated, once the phase noise property of each main noise source is obtained. Validation of this model was performed by comparing the numerical simulation results and the measurements on the prototype. The experiment results showed that the phase noise predicted by the model agrees with that of the measured in our prototype. The potential application of the model proposed in this paper is to be used to design a hybrid analog-digital PLL with promising phase noise performance.","PeriodicalId":289132,"journal":{"name":"2021 IEEE 15th International Conference on Electronic Measurement & Instruments (ICEMI)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123069471","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-10-29DOI: 10.1109/ICEMI52946.2021.9679652
Yiqun Zhang, Weizheng Lyu, Tonghui Sun, F. Zhong
To address the problems of short data link signal distance, poor pointing accuracy, and the real-time performance of ordinary directional antennas during the flight of small and medium-sized unmanned aerial vehicles (UAVs), an Arduino-based UAV antenna automatic tracking system is proposed in this study. An ATMEG328P main controller is used to control the overall system, GPS is employed to obtain the real-time position of a UAV, a coordinate system with the center of the earth as the origin is established to calculate the relative position of the aircraft and the ground, and virtual GPS frame data are generated via NMEAGNE for the tracking simulation. Moreover, a radio is utilized to collect and test the POS data. The experimental results show that the data link is stable, and the range-increasing effect is obvious when the system is tracking. The optimization program achieves high-precision tracking for aerial targets within 0.5 m and keeps the image signal clear up to 10 km through 100 MW data transmission. Moreover, the data link signal can be maintained above 90%.
{"title":"UAV Antenna Automatic Tracking System Based on Arduino","authors":"Yiqun Zhang, Weizheng Lyu, Tonghui Sun, F. Zhong","doi":"10.1109/ICEMI52946.2021.9679652","DOIUrl":"https://doi.org/10.1109/ICEMI52946.2021.9679652","url":null,"abstract":"To address the problems of short data link signal distance, poor pointing accuracy, and the real-time performance of ordinary directional antennas during the flight of small and medium-sized unmanned aerial vehicles (UAVs), an Arduino-based UAV antenna automatic tracking system is proposed in this study. An ATMEG328P main controller is used to control the overall system, GPS is employed to obtain the real-time position of a UAV, a coordinate system with the center of the earth as the origin is established to calculate the relative position of the aircraft and the ground, and virtual GPS frame data are generated via NMEAGNE for the tracking simulation. Moreover, a radio is utilized to collect and test the POS data. The experimental results show that the data link is stable, and the range-increasing effect is obvious when the system is tracking. The optimization program achieves high-precision tracking for aerial targets within 0.5 m and keeps the image signal clear up to 10 km through 100 MW data transmission. Moreover, the data link signal can be maintained above 90%.","PeriodicalId":289132,"journal":{"name":"2021 IEEE 15th International Conference on Electronic Measurement & Instruments (ICEMI)","volume":"298 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124261162","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-10-29DOI: 10.1109/ICEMI52946.2021.9679537
Xu Yang, Hongyan Xing, Xinyuan Ji
Atmospheric electric field signal (AEFS) usually superimposes low-frequency noise, which has a negative effect on thunderstorm monitoring. A thunderstorm prediction method based on Convolutional Neural Network (CNN) and Bidirectional Long Short Term Memory (BiLSTM) is proposed. Firstly, AEFS is divided into useful, baseline and noise components by BEADS. After getting the estimated value of the useful signal, the denoised signal is obtained. Then, the AEFS prediction model is built based on BiLSTM. After inputting the AEFS spatial features extracted by CNN into the model, a CNN-BiLSTM hybrid model for thunderstorm prediction is formed. After analyzing the performance of the method, we carried out the experiment in thunderstorm weather. Results show that the SNR of AEFS processed by BEADS is improved effectively. It's worth noting that the determining coefficients before and after BEADS are all above 94.12%, showing a good effect. Finally, the effectiveness of the method is proved again by the coincidence between the predicted results and the radar chart.
{"title":"Thunderstorm Prediction Method Based on CNN-BiLSTM Using BEADS*","authors":"Xu Yang, Hongyan Xing, Xinyuan Ji","doi":"10.1109/ICEMI52946.2021.9679537","DOIUrl":"https://doi.org/10.1109/ICEMI52946.2021.9679537","url":null,"abstract":"Atmospheric electric field signal (AEFS) usually superimposes low-frequency noise, which has a negative effect on thunderstorm monitoring. A thunderstorm prediction method based on Convolutional Neural Network (CNN) and Bidirectional Long Short Term Memory (BiLSTM) is proposed. Firstly, AEFS is divided into useful, baseline and noise components by BEADS. After getting the estimated value of the useful signal, the denoised signal is obtained. Then, the AEFS prediction model is built based on BiLSTM. After inputting the AEFS spatial features extracted by CNN into the model, a CNN-BiLSTM hybrid model for thunderstorm prediction is formed. After analyzing the performance of the method, we carried out the experiment in thunderstorm weather. Results show that the SNR of AEFS processed by BEADS is improved effectively. It's worth noting that the determining coefficients before and after BEADS are all above 94.12%, showing a good effect. Finally, the effectiveness of the method is proved again by the coincidence between the predicted results and the radar chart.","PeriodicalId":289132,"journal":{"name":"2021 IEEE 15th International Conference on Electronic Measurement & Instruments (ICEMI)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127291028","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Capacitive voltage transformer (CVT) is a measurement device widely used in high-voltage power grids. Evaluating CVT's internal insulation online and replacing faulty device are critical for power grid's safety. However, the existing online evaluation methods mainly relaying on installing auxiliary sensors inside the device, which may change its internal electric field distribution and makes the device easy to be broken. In response to these challenges, an online evaluation method for the internal insulation state of CVT based on its measurements is proposed. This method explores the internal connection between the internal insulation state of CVT and its measurement error information, and then inverts the change of the internal insulation state of the CVT by monitoring the change of the measurement information of the CVT, and realizes the real-time online evaluation of the internal insulation state of the CVT based on the support vector machine. Experimental analysis shows that this method can accurately evaluate the internal insulation state of the CVT without the need for power outages and external sensors.
{"title":"On-line Evaluation Method of CVT Internal Insulation State Based on Support Vector Machine","authors":"Yunwu Xu, Hongbin Li, Qing Chen, Chuanji Zhang, Jing Zhang, Yuxuan Zhang","doi":"10.1109/ICEMI52946.2021.9679598","DOIUrl":"https://doi.org/10.1109/ICEMI52946.2021.9679598","url":null,"abstract":"Capacitive voltage transformer (CVT) is a measurement device widely used in high-voltage power grids. Evaluating CVT's internal insulation online and replacing faulty device are critical for power grid's safety. However, the existing online evaluation methods mainly relaying on installing auxiliary sensors inside the device, which may change its internal electric field distribution and makes the device easy to be broken. In response to these challenges, an online evaluation method for the internal insulation state of CVT based on its measurements is proposed. This method explores the internal connection between the internal insulation state of CVT and its measurement error information, and then inverts the change of the internal insulation state of the CVT by monitoring the change of the measurement information of the CVT, and realizes the real-time online evaluation of the internal insulation state of the CVT based on the support vector machine. Experimental analysis shows that this method can accurately evaluate the internal insulation state of the CVT without the need for power outages and external sensors.","PeriodicalId":289132,"journal":{"name":"2021 IEEE 15th International Conference on Electronic Measurement & Instruments (ICEMI)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126932497","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-10-29DOI: 10.1109/ICEMI52946.2021.9679665
Chen Wang, Hai-long Zhang, Zhifeng Zhu
The pressure transmitter is an instrument that converts the original pressure variable into a quantifiable standard electrical signal output, and its electrical signal has a continuous function relationship with the pressure variable. The traditional manual calibration method requires manual operation to calibrate the pressure transmitter during the calibration process, which is easy to introduce errors and has poor reliability. In order to solve some of the shortcomings of traditional calibration, this paper studies the automatic calibration method based on the ADA4557 signal conditioning chip. Using the actual output value and standard output value under three sets of known pressure points, the curve coefficient of the second-order equation is obtained by the least square method. Thus, the correction coefficient is calculated and written into the pressure transmitter to complete the calibration. After calculation and verification, the calibration method has greatly reduced the calibration time, from the traditional average calibration time of 50 seconds to about 14 seconds, which can smoothly realize the automatic calibration of the pressure transmitter, and the calibration effect is obvious.
{"title":"Research on Automatic Calibration Method Based on ADA4557","authors":"Chen Wang, Hai-long Zhang, Zhifeng Zhu","doi":"10.1109/ICEMI52946.2021.9679665","DOIUrl":"https://doi.org/10.1109/ICEMI52946.2021.9679665","url":null,"abstract":"The pressure transmitter is an instrument that converts the original pressure variable into a quantifiable standard electrical signal output, and its electrical signal has a continuous function relationship with the pressure variable. The traditional manual calibration method requires manual operation to calibrate the pressure transmitter during the calibration process, which is easy to introduce errors and has poor reliability. In order to solve some of the shortcomings of traditional calibration, this paper studies the automatic calibration method based on the ADA4557 signal conditioning chip. Using the actual output value and standard output value under three sets of known pressure points, the curve coefficient of the second-order equation is obtained by the least square method. Thus, the correction coefficient is calculated and written into the pressure transmitter to complete the calibration. After calculation and verification, the calibration method has greatly reduced the calibration time, from the traditional average calibration time of 50 seconds to about 14 seconds, which can smoothly realize the automatic calibration of the pressure transmitter, and the calibration effect is obvious.","PeriodicalId":289132,"journal":{"name":"2021 IEEE 15th International Conference on Electronic Measurement & Instruments (ICEMI)","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116112956","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-10-29DOI: 10.1109/ICEMI52946.2021.9679646
Junning Cui, Wenwen Cui, Yesheng Lu, Zhou Tong
In order to meet the requirements of environmental stability of the existing 12m dynamic calibration system of laser interferometer, a novel air shower approach to maintain thermal stability for long-range laser interference optical path is proposed. The electric heating mode which can realize the rapid temperature control of air is organically combined with the heat exchange mode suitable for high-precision temperature control to complete the rapid and high-precision temperature control of air and realize the production of constant temperature air. By using simulation software to calculate and analyze the air shower temperature control effect of the system, the scheme is verified to be feasible. The experimental result shows that the developed high-precision thermal control system for long-range laser interference optical path can basically reach a thermal stability of ±0.023°C and fulfill the requirements of 12m dynamic calibration system of laser interferometer.
{"title":"Novel Air Shower Approach to Maintain Thermal Stability for 12m Dynamic Calibration System of Laser Interferometer","authors":"Junning Cui, Wenwen Cui, Yesheng Lu, Zhou Tong","doi":"10.1109/ICEMI52946.2021.9679646","DOIUrl":"https://doi.org/10.1109/ICEMI52946.2021.9679646","url":null,"abstract":"In order to meet the requirements of environmental stability of the existing 12m dynamic calibration system of laser interferometer, a novel air shower approach to maintain thermal stability for long-range laser interference optical path is proposed. The electric heating mode which can realize the rapid temperature control of air is organically combined with the heat exchange mode suitable for high-precision temperature control to complete the rapid and high-precision temperature control of air and realize the production of constant temperature air. By using simulation software to calculate and analyze the air shower temperature control effect of the system, the scheme is verified to be feasible. The experimental result shows that the developed high-precision thermal control system for long-range laser interference optical path can basically reach a thermal stability of ±0.023°C and fulfill the requirements of 12m dynamic calibration system of laser interferometer.","PeriodicalId":289132,"journal":{"name":"2021 IEEE 15th International Conference on Electronic Measurement & Instruments (ICEMI)","volume":"106 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122027264","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-10-29DOI: 10.1109/ICEMI52946.2021.9679641
Binfeng Chen, Bin Guo, X. Hu
Integrated Electro-Hydraulic Braking System (I-EHB) is the latest development achievement of automobile braking industry. Based on the lack of domestic industry standards for test bench performance test, a set of I-EHB performance test method is provided. Aiming at the three working states of I-EHB and referring to the bench test method of vacuum booster, the basic braking performance test items and performance indexes under different working states of I-EHB are designed. After studying the control strategy of I-EHB's intelligent driving assistance function, including ABS (Anti-Lock Braking System) function and AEB (Autonomous Emergency Braking) function, and designs ABS and AEB performance test items. With the existing detection system which can simulate the real vehicle working conditions, the products of an automobile company are tested, and the test results are complete and comprehensive, which is of great significance to the I-EHB bench performance test method.
{"title":"Research on Performance Test Method of Integrated Electro-Hydraulic Braking System","authors":"Binfeng Chen, Bin Guo, X. Hu","doi":"10.1109/ICEMI52946.2021.9679641","DOIUrl":"https://doi.org/10.1109/ICEMI52946.2021.9679641","url":null,"abstract":"Integrated Electro-Hydraulic Braking System (I-EHB) is the latest development achievement of automobile braking industry. Based on the lack of domestic industry standards for test bench performance test, a set of I-EHB performance test method is provided. Aiming at the three working states of I-EHB and referring to the bench test method of vacuum booster, the basic braking performance test items and performance indexes under different working states of I-EHB are designed. After studying the control strategy of I-EHB's intelligent driving assistance function, including ABS (Anti-Lock Braking System) function and AEB (Autonomous Emergency Braking) function, and designs ABS and AEB performance test items. With the existing detection system which can simulate the real vehicle working conditions, the products of an automobile company are tested, and the test results are complete and comprehensive, which is of great significance to the I-EHB bench performance test method.","PeriodicalId":289132,"journal":{"name":"2021 IEEE 15th International Conference on Electronic Measurement & Instruments (ICEMI)","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116813376","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-10-29DOI: 10.1109/ICEMI52946.2021.9679562
Xuhui Li, Chenyang Su, Y. Tong, Jinsong Yu
At present, the development of the test process design process for civil aircraft mainly relies on the process personnel to manually review relevant test information and write test process documents, which results in low efficiency of test process development and cannot effectively guarantee the standardization and normalization of process documents. The development of technology has made the unit under test more complicated, which lengthens the functional test cycle, and cannot meet the actual needs of current product production and maintenance. This paper proposes the research based on the Automatic Test Markup Language (IEEE 1671 ATML) and the Signal and Test Definition (IEEE-1641 STD), and builds an automated integrated test system that meets the requirements of automated integrated testing of domestic civil aircraft ground functions. Among them, the development and management of integrated test cases have realized the inheritability, reusability and sharing of test cases; the secondary packaging drive technology of test resources realizes multi-variable and multi-channel online real-time monitoring; the machine based on interface control files It supports bus protocol management and test operation, and realizes the flexible configuration of bus communication protocol in the test process.
{"title":"A Cloud-Based Automatic Test System for Civil Aircraft Ground Function Health Management","authors":"Xuhui Li, Chenyang Su, Y. Tong, Jinsong Yu","doi":"10.1109/ICEMI52946.2021.9679562","DOIUrl":"https://doi.org/10.1109/ICEMI52946.2021.9679562","url":null,"abstract":"At present, the development of the test process design process for civil aircraft mainly relies on the process personnel to manually review relevant test information and write test process documents, which results in low efficiency of test process development and cannot effectively guarantee the standardization and normalization of process documents. The development of technology has made the unit under test more complicated, which lengthens the functional test cycle, and cannot meet the actual needs of current product production and maintenance. This paper proposes the research based on the Automatic Test Markup Language (IEEE 1671 ATML) and the Signal and Test Definition (IEEE-1641 STD), and builds an automated integrated test system that meets the requirements of automated integrated testing of domestic civil aircraft ground functions. Among them, the development and management of integrated test cases have realized the inheritability, reusability and sharing of test cases; the secondary packaging drive technology of test resources realizes multi-variable and multi-channel online real-time monitoring; the machine based on interface control files It supports bus protocol management and test operation, and realizes the flexible configuration of bus communication protocol in the test process.","PeriodicalId":289132,"journal":{"name":"2021 IEEE 15th International Conference on Electronic Measurement & Instruments (ICEMI)","volume":"19 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116824473","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-10-29DOI: 10.1109/ICEMI52946.2021.9679572
Fenghua Xiang, Binfeng Yang, Bo Li, Zhen Zhao, Jiaojiao Guo
In order to solve the problem of radio navigation and satellite navigation in complex environment, combined with the advantages of magnetic field signal anti-interference resistance and penetration, for the traditional magnetic positioning algorithm in the permanent magnet field error shortage, this paper proposes the second order magnetic gradient tensor permanent magnet positioning algorithm based on double magnetic dipole. First, a cylindrical permanent magnet model with rubidium ferroboron is established in Comsol software and the magnetic field distribution is simulated. Then, the one step metric tensor matrix, second step gradient tensor matrix, one step metric tensor localization, and second order gradient tensor localization principles are derived from the magnetic dipole model. Based on the hexaheon measurement array, the first-and second-order magnetic gradient tensors are measured using the three-point formula in numerical differential knowledge. Based on the traditional second-order gradient tensor localization algorithm, the permanent magnet is equivalent to two magnetic dipole models centered on the permanent magnet, and we derive the permanent dipole localization algorithm based on double magnetic dipoles. Finally, the new algorithm was validated using the cylindrical permanent magnet model in Comsol software combined with Matlab software. The results show that the second-order magnetic gradient algorithm based on two magnetic dipole can effectively improve the incoming localization accuracy of permanent magnet, and thus improve the robustness of permanent magnet localization system.
{"title":"A Second-Order Mgt Permanent Magnet Localization Algorithm Based on A Dual Magnetic Dipole","authors":"Fenghua Xiang, Binfeng Yang, Bo Li, Zhen Zhao, Jiaojiao Guo","doi":"10.1109/ICEMI52946.2021.9679572","DOIUrl":"https://doi.org/10.1109/ICEMI52946.2021.9679572","url":null,"abstract":"In order to solve the problem of radio navigation and satellite navigation in complex environment, combined with the advantages of magnetic field signal anti-interference resistance and penetration, for the traditional magnetic positioning algorithm in the permanent magnet field error shortage, this paper proposes the second order magnetic gradient tensor permanent magnet positioning algorithm based on double magnetic dipole. First, a cylindrical permanent magnet model with rubidium ferroboron is established in Comsol software and the magnetic field distribution is simulated. Then, the one step metric tensor matrix, second step gradient tensor matrix, one step metric tensor localization, and second order gradient tensor localization principles are derived from the magnetic dipole model. Based on the hexaheon measurement array, the first-and second-order magnetic gradient tensors are measured using the three-point formula in numerical differential knowledge. Based on the traditional second-order gradient tensor localization algorithm, the permanent magnet is equivalent to two magnetic dipole models centered on the permanent magnet, and we derive the permanent dipole localization algorithm based on double magnetic dipoles. Finally, the new algorithm was validated using the cylindrical permanent magnet model in Comsol software combined with Matlab software. The results show that the second-order magnetic gradient algorithm based on two magnetic dipole can effectively improve the incoming localization accuracy of permanent magnet, and thus improve the robustness of permanent magnet localization system.","PeriodicalId":289132,"journal":{"name":"2021 IEEE 15th International Conference on Electronic Measurement & Instruments (ICEMI)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128765662","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Triaxial flight vibration test system is a test equipment to simulate the multi degree of freedom vibration environment suffered by the missile during flight. In order to ensure the accuracy and reliability of the test data of the test system, the calibration technology of displacement amplitude and attitude angle under the coupling vibration environment of the test system is studied: the measurement model of vibration displacement and angle is firstly established based on the principle of Doppler measurement; secondly, based on laser vibration measurement technology and adjustable measuring tooling, the in-situ calibration device of the test system is developed, and the anti-vibration deformation of the measuring tooling is simulated and analyzed by using SolidWorks software to verify the correctness of the tooling design; finally, the calibration test of the test system is carried out by using the calibration device, and the measurement uncertainty is given. This method can provide a strong guarantee for the effective traceability of the test system.
{"title":"Research on Calibration Technology of Displacement and Angle for Triaxial Flight Vibration Test System under the Coupling Vibration Environment","authors":"Bo Ni, Fangyin Tian, Jigang Chen, Jiaxi Lu, Yongqi Zhao, Jiang Sha","doi":"10.1109/ICEMI52946.2021.9679620","DOIUrl":"https://doi.org/10.1109/ICEMI52946.2021.9679620","url":null,"abstract":"Triaxial flight vibration test system is a test equipment to simulate the multi degree of freedom vibration environment suffered by the missile during flight. In order to ensure the accuracy and reliability of the test data of the test system, the calibration technology of displacement amplitude and attitude angle under the coupling vibration environment of the test system is studied: the measurement model of vibration displacement and angle is firstly established based on the principle of Doppler measurement; secondly, based on laser vibration measurement technology and adjustable measuring tooling, the in-situ calibration device of the test system is developed, and the anti-vibration deformation of the measuring tooling is simulated and analyzed by using SolidWorks software to verify the correctness of the tooling design; finally, the calibration test of the test system is carried out by using the calibration device, and the measurement uncertainty is given. This method can provide a strong guarantee for the effective traceability of the test system.","PeriodicalId":289132,"journal":{"name":"2021 IEEE 15th International Conference on Electronic Measurement & Instruments (ICEMI)","volume":"255 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128632236","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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