Pub Date : 2019-11-01DOI: 10.1109/ICEMI46757.2019.9101769
Jiang Hongna, J. Hongwei, Bai Zhongfei
Nowaday airborne wired sensor system exists many actual problem, complex cable, poor flexibility, high cost, increasing the weight of aircraft, poor maintainability, difficult isolation for the fault and so on. So we need to find new wireless and intelligent measuring means to meet the demand of modern flight test. Based on the research of the intelligent airborne wireless sensor network technology, we break through some pivotal technology such as airborne wireless sensor network structure design, the data synchronization acquisition techniques, the anti-interference design and network node energy supply technologies. Eventually we develop airborne wireless sensor network application strategy in the flight test and provide theoretical support for the practical application.
{"title":"The application strategy for intelligent wireless sensor network in flight test","authors":"Jiang Hongna, J. Hongwei, Bai Zhongfei","doi":"10.1109/ICEMI46757.2019.9101769","DOIUrl":"https://doi.org/10.1109/ICEMI46757.2019.9101769","url":null,"abstract":"Nowaday airborne wired sensor system exists many actual problem, complex cable, poor flexibility, high cost, increasing the weight of aircraft, poor maintainability, difficult isolation for the fault and so on. So we need to find new wireless and intelligent measuring means to meet the demand of modern flight test. Based on the research of the intelligent airborne wireless sensor network technology, we break through some pivotal technology such as airborne wireless sensor network structure design, the data synchronization acquisition techniques, the anti-interference design and network node energy supply technologies. Eventually we develop airborne wireless sensor network application strategy in the flight test and provide theoretical support for the practical application.","PeriodicalId":419168,"journal":{"name":"2019 14th IEEE International Conference on Electronic Measurement & Instruments (ICEMI)","volume":"129 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122759135","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 : 2019-11-01DOI: 10.1109/ICEMI46757.2019.9101461
Zhang Zhiqiang, Yu Lei, Wang Yunling
Error Vector Magnitude (EVM) is the most important parameter of modulation quality of wireless digital signal. At present, there are some shortcomings in the calibration process as follows: 1) Lack of vector signal generator that can accurately set the required EVM value of the standard signal, so when calibrating the vector signal analyzer, only the measurement points near the zero modulation error are calibrated. 2) Closed-loop inspection between instruments, using vector signal analyzer and vector signal generator to calibrate the EVM in a closed-loop way. According to the calculation formula of error vector magnitude on digital modulation signal from the vector signal generator, the setting value of I/Q amplitude imbalance and signal-to-noise ratio at a given EVM value of the ZigBee signal are calculated, in the meantime the vector signal analysis software built in the N9030A is used to measure the EVM of the ZigBee signal. The result shows good consistency. At the end of the article, the traceability of adjustments on I/Q amplitude imbalance and signal-to-noise ratio is introduced.
{"title":"Implement and traceability of adjustable EVM on ZigBee signal from vector signal generator","authors":"Zhang Zhiqiang, Yu Lei, Wang Yunling","doi":"10.1109/ICEMI46757.2019.9101461","DOIUrl":"https://doi.org/10.1109/ICEMI46757.2019.9101461","url":null,"abstract":"Error Vector Magnitude (EVM) is the most important parameter of modulation quality of wireless digital signal. At present, there are some shortcomings in the calibration process as follows: 1) Lack of vector signal generator that can accurately set the required EVM value of the standard signal, so when calibrating the vector signal analyzer, only the measurement points near the zero modulation error are calibrated. 2) Closed-loop inspection between instruments, using vector signal analyzer and vector signal generator to calibrate the EVM in a closed-loop way. According to the calculation formula of error vector magnitude on digital modulation signal from the vector signal generator, the setting value of I/Q amplitude imbalance and signal-to-noise ratio at a given EVM value of the ZigBee signal are calculated, in the meantime the vector signal analysis software built in the N9030A is used to measure the EVM of the ZigBee signal. The result shows good consistency. At the end of the article, the traceability of adjustments on I/Q amplitude imbalance and signal-to-noise ratio is introduced.","PeriodicalId":419168,"journal":{"name":"2019 14th IEEE International Conference on Electronic Measurement & Instruments (ICEMI)","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127018698","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 : 2019-11-01DOI: 10.1109/ICEMI46757.2019.9101501
Yang Wanyu, Zhao Yijiu, Yu Zhonghao, Liu Dan
With the rapid development of electronic science and technology, the signal frequency that engineers need to measure becomes higher and higher. Limited by the analog-to-digital converter (ADC) sampling rate and Nyquist sampling theorem, the digital oscilloscope can only measure waveform in a very limited range of frequency in real-time sampling mode. Therefore, it is necessary to introduce an equivalent sampling technique to increase the ability of the oscilloscope to measure higher frequency signals. In this paper, a random equivalent sampling reconstruction method based on field programmable gate array (FPGA) is proposed. In the random equivalent sampling mode, multiple sets of samples collected by the ADC are buffered in the FPGA, and the stretched circuit measures the time interval $Delta$t between each set of trigger signals and the rising edge of the first sampling clock. Through these samples as well as the $Delta$t in each group, the waveform can be reconstructed in FPGA, and then this reconstructed waveform can be read and displayed by the upper computer. The waveform refreshing rate of the random equivalent sampling can be greatly improved by this kind of reconstruction inside a FPGA.
{"title":"Design of random equivalent sampling control module based on FPGA","authors":"Yang Wanyu, Zhao Yijiu, Yu Zhonghao, Liu Dan","doi":"10.1109/ICEMI46757.2019.9101501","DOIUrl":"https://doi.org/10.1109/ICEMI46757.2019.9101501","url":null,"abstract":"With the rapid development of electronic science and technology, the signal frequency that engineers need to measure becomes higher and higher. Limited by the analog-to-digital converter (ADC) sampling rate and Nyquist sampling theorem, the digital oscilloscope can only measure waveform in a very limited range of frequency in real-time sampling mode. Therefore, it is necessary to introduce an equivalent sampling technique to increase the ability of the oscilloscope to measure higher frequency signals. In this paper, a random equivalent sampling reconstruction method based on field programmable gate array (FPGA) is proposed. In the random equivalent sampling mode, multiple sets of samples collected by the ADC are buffered in the FPGA, and the stretched circuit measures the time interval $Delta$t between each set of trigger signals and the rising edge of the first sampling clock. Through these samples as well as the $Delta$t in each group, the waveform can be reconstructed in FPGA, and then this reconstructed waveform can be read and displayed by the upper computer. The waveform refreshing rate of the random equivalent sampling can be greatly improved by this kind of reconstruction inside a FPGA.","PeriodicalId":419168,"journal":{"name":"2019 14th IEEE International Conference on Electronic Measurement & Instruments (ICEMI)","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127057452","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 : 2019-11-01DOI: 10.1109/ICEMI46757.2019.9101869
Jiang Xiaochang, Wu Jie
The analog front end circuit is an important part of the digital storage oscilloscope. This paper designs a wide band, low noise and high input impedance analog front end circuit. It includes high impedance buffer, single-ended-to-differential conversion, DC offset adjustment, variable gain amplifier and low noise power modules. We used a high-impedance passive probe with this circuit to perform a deep performance test, which contains time and frequency domain. The test results show that it can be well matched with general probe. The front end system has good performance. The bandwidth reaches about 500 MHz and the noise floor RMS voltage is 5.1 mV. The bandwidth and noise floor can meet the GSPS sampling rate and 8-bit vertical resolution digital oscilloscope requirements.
{"title":"An analog front end design for GSPS oscilloscope","authors":"Jiang Xiaochang, Wu Jie","doi":"10.1109/ICEMI46757.2019.9101869","DOIUrl":"https://doi.org/10.1109/ICEMI46757.2019.9101869","url":null,"abstract":"The analog front end circuit is an important part of the digital storage oscilloscope. This paper designs a wide band, low noise and high input impedance analog front end circuit. It includes high impedance buffer, single-ended-to-differential conversion, DC offset adjustment, variable gain amplifier and low noise power modules. We used a high-impedance passive probe with this circuit to perform a deep performance test, which contains time and frequency domain. The test results show that it can be well matched with general probe. The front end system has good performance. The bandwidth reaches about 500 MHz and the noise floor RMS voltage is 5.1 mV. The bandwidth and noise floor can meet the GSPS sampling rate and 8-bit vertical resolution digital oscilloscope requirements.","PeriodicalId":419168,"journal":{"name":"2019 14th IEEE International Conference on Electronic Measurement & Instruments (ICEMI)","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127084582","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 : 2019-11-01DOI: 10.1109/ICEMI46757.2019.9101646
Chang Qi, Meng Yao, Liu Jun, Yang Weixi
Impact damage location research is one of the main problems of structural health monitoring. Real-time monitoring of impact damage on structures is highly necessary. In order to improve the accuracy of impact localization and the efficiency of sensor utilization, this paper proposes a two-dimensional beam focus impact localization algorithm based on cross array sensor arrangement. The number of sensors required for the conventional localization method is effectively reduced without losing the localization accuracy. Through the cross array piezoelectric sensor arrangement, the localization accuracy of the outer field can be greatly improved. In order to enhance the localization accuracy for the field between the sensors (inner field), this paper uses the four-point arc localization method to locate the impact in the inner field. So the localization of the impact of the entire board can be fulfilled with a highly improved accuracy. The effectiveness and practicability of the method are verified through the experimental research.
{"title":"Research on impact location algorithm based on two-dimensional beam focusing method","authors":"Chang Qi, Meng Yao, Liu Jun, Yang Weixi","doi":"10.1109/ICEMI46757.2019.9101646","DOIUrl":"https://doi.org/10.1109/ICEMI46757.2019.9101646","url":null,"abstract":"Impact damage location research is one of the main problems of structural health monitoring. Real-time monitoring of impact damage on structures is highly necessary. In order to improve the accuracy of impact localization and the efficiency of sensor utilization, this paper proposes a two-dimensional beam focus impact localization algorithm based on cross array sensor arrangement. The number of sensors required for the conventional localization method is effectively reduced without losing the localization accuracy. Through the cross array piezoelectric sensor arrangement, the localization accuracy of the outer field can be greatly improved. In order to enhance the localization accuracy for the field between the sensors (inner field), this paper uses the four-point arc localization method to locate the impact in the inner field. So the localization of the impact of the entire board can be fulfilled with a highly improved accuracy. The effectiveness and practicability of the method are verified through the experimental research.","PeriodicalId":419168,"journal":{"name":"2019 14th IEEE International Conference on Electronic Measurement & Instruments (ICEMI)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126198569","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 : 2019-11-01DOI: 10.1109/ICEMI46757.2019.9101440
Wang Zengmin, L. Honghui, He Qing, Qu Jifeng, Gao Yuan
In the past, most of worldwide Josephson voltage standard systems use liquid helium to cool down the Josephson junction chips. Due to the liquid helium shortage, the cost of operating liquid helium based Josephson voltage standards rises year by year. Therefore there is an increasing need for a compact cryocoooled Josephson voltage standard which has no need of liquid helium. This paper presents a domestic liquid-helium-free dc programmable Josephson voltage standard (PJVS) operating on a cryocooler at 4K or 10 K. In this work, the performance of a NIST-fabricated two volt Josephson junction array (JJA) and a NMIJ-fabricated two volt JJA operating in a cryopackage around the Gifford-McMahon (GM) cryocooler is presented. The JJA chip has been shown to operate successfully with the domestic cryopakage. Stable quantum steps with operating margin greater than 1.4 mA was obtained. Differences in behavior of the NIST-fabricated JJA in liquid helium and on the cryocooler are also discussed.
{"title":"Operation of compact cryocooled 2V programmable josephson voltage standard at NIM","authors":"Wang Zengmin, L. Honghui, He Qing, Qu Jifeng, Gao Yuan","doi":"10.1109/ICEMI46757.2019.9101440","DOIUrl":"https://doi.org/10.1109/ICEMI46757.2019.9101440","url":null,"abstract":"In the past, most of worldwide Josephson voltage standard systems use liquid helium to cool down the Josephson junction chips. Due to the liquid helium shortage, the cost of operating liquid helium based Josephson voltage standards rises year by year. Therefore there is an increasing need for a compact cryocoooled Josephson voltage standard which has no need of liquid helium. This paper presents a domestic liquid-helium-free dc programmable Josephson voltage standard (PJVS) operating on a cryocooler at 4K or 10 K. In this work, the performance of a NIST-fabricated two volt Josephson junction array (JJA) and a NMIJ-fabricated two volt JJA operating in a cryopackage around the Gifford-McMahon (GM) cryocooler is presented. The JJA chip has been shown to operate successfully with the domestic cryopakage. Stable quantum steps with operating margin greater than 1.4 mA was obtained. Differences in behavior of the NIST-fabricated JJA in liquid helium and on the cryocooler are also discussed.","PeriodicalId":419168,"journal":{"name":"2019 14th IEEE International Conference on Electronic Measurement & Instruments (ICEMI)","volume":"132 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127369346","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 : 2019-11-01DOI: 10.1109/ICEMI46757.2019.9101680
Miao Yuanyuan, Zhang Lijie, Zhou Xuejing
In order to improve the fault tolerance and the running speed of BeiDou/SINS tightly-coupled integrated navigation algorithm, a BeiDou/SINS tightly-coupled navigation algorithm base on federated squared-root cubature Kalman (SRCKF) is proposed in this paper. The square root of the error covariance matrix is used to ensure the non-negative nature of the matrix in SRCKF, which avoids the divergence of the filtering result in CKF. The federated SRCKF filter is designed to fuse the attitude information, pseudorange information and pseudorange rate information from accelerometer, gyroscope, magnetic sensor and BeiDou satellite navigation receiver. Fault tolerance of the federated filter is better than that of the centralized filter. The simulation results show that the real-time performance of the proposed algorithm is better than the centralized SRCKF under the premise of ensuring navigation accuracy.
{"title":"BeiDou/SINS tightly-coupled integrated navigation algorithm based on federated squared-root CKF","authors":"Miao Yuanyuan, Zhang Lijie, Zhou Xuejing","doi":"10.1109/ICEMI46757.2019.9101680","DOIUrl":"https://doi.org/10.1109/ICEMI46757.2019.9101680","url":null,"abstract":"In order to improve the fault tolerance and the running speed of BeiDou/SINS tightly-coupled integrated navigation algorithm, a BeiDou/SINS tightly-coupled navigation algorithm base on federated squared-root cubature Kalman (SRCKF) is proposed in this paper. The square root of the error covariance matrix is used to ensure the non-negative nature of the matrix in SRCKF, which avoids the divergence of the filtering result in CKF. The federated SRCKF filter is designed to fuse the attitude information, pseudorange information and pseudorange rate information from accelerometer, gyroscope, magnetic sensor and BeiDou satellite navigation receiver. Fault tolerance of the federated filter is better than that of the centralized filter. The simulation results show that the real-time performance of the proposed algorithm is better than the centralized SRCKF under the premise of ensuring navigation accuracy.","PeriodicalId":419168,"journal":{"name":"2019 14th IEEE International Conference on Electronic Measurement & Instruments (ICEMI)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121897480","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 : 2019-11-01DOI: 10.1109/ICEMI46757.2019.9101816
S. Liming, Cao Yonggang, Wang Yue-bing, Zheng Hui-feng
The previous studies have demonstrated that the PVDF pyroelectric sensor has good effects on acoustic power measurement. As a sensor, the accuracy of the measurement results is directly related to the performance of the sensor. One of the most important performance indicators is the sensitivity of the sensor. In this study, the ultrasonic power response sensitivity of the PVDF pyroelectric sensor was defined. To study the sensitivity of the sensor, the finite element method based on the physical model of the PVDF pyroelectric sensor was used to analyze the relationship between the amplitude of output pyroelectric voltage and the acoustic power. Besides that, a large size PVDF pyroelectric sensor was used for the detection of the different acoustic power. Finally, the measurement and simulation results were compared. It is found that the amplitude of output pyroelectric voltage is basically linear with the radiated acoustic power. According to the calculation, the theoretical value of the ultrasonic power response sensitivity is 0. 1606mV/W, the simulation value is 0.1608 mV/W, and the experimental value is 0.1414 mV/W. These three values are basically equal. The study shows that the ultrasonic power response sensitivity of the PVDF pyroelectric sensor is reasonable and feasible. It provides some help for the performance study of the PVDF pyroelectric sensor and indicates the potential to measure high-intensity acoustic power.
{"title":"Study on Ultrasonic power response sensitivity of the PVDF pyroelectric sensor","authors":"S. Liming, Cao Yonggang, Wang Yue-bing, Zheng Hui-feng","doi":"10.1109/ICEMI46757.2019.9101816","DOIUrl":"https://doi.org/10.1109/ICEMI46757.2019.9101816","url":null,"abstract":"The previous studies have demonstrated that the PVDF pyroelectric sensor has good effects on acoustic power measurement. As a sensor, the accuracy of the measurement results is directly related to the performance of the sensor. One of the most important performance indicators is the sensitivity of the sensor. In this study, the ultrasonic power response sensitivity of the PVDF pyroelectric sensor was defined. To study the sensitivity of the sensor, the finite element method based on the physical model of the PVDF pyroelectric sensor was used to analyze the relationship between the amplitude of output pyroelectric voltage and the acoustic power. Besides that, a large size PVDF pyroelectric sensor was used for the detection of the different acoustic power. Finally, the measurement and simulation results were compared. It is found that the amplitude of output pyroelectric voltage is basically linear with the radiated acoustic power. According to the calculation, the theoretical value of the ultrasonic power response sensitivity is 0. 1606mV/W, the simulation value is 0.1608 mV/W, and the experimental value is 0.1414 mV/W. These three values are basically equal. The study shows that the ultrasonic power response sensitivity of the PVDF pyroelectric sensor is reasonable and feasible. It provides some help for the performance study of the PVDF pyroelectric sensor and indicates the potential to measure high-intensity acoustic power.","PeriodicalId":419168,"journal":{"name":"2019 14th IEEE International Conference on Electronic Measurement & Instruments (ICEMI)","volume":"147 Pt 6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126311210","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 : 2019-11-01DOI: 10.1109/ICEMI46757.2019.9101436
Shao Fuchi, Xing Hongyan
Sea clutter is a kind of signal with low signal-to-noise ratio. Fractional Fourier transform is used to gather energy. Fractional Brownian motion model is introduced to model sea clutter. Based on the measured data of IPIX radar, high-order multi-fractal parameters are calculated. Fitting the multi-fractal parameters, choosing the steepest interval and calculating its slope. At the same time, choosing the fractal parameters with scale -30 under HH and VV polarization. The small targets are 0 and 1, respectively. The slope and high-scale fractal parameters of different sea conditions are normalized, and the normalized data are predicted by logistic regression. The simulation results show that FRFT can aggregate the energy of sea clutter signal. Logistic regression model can predict the fractal parameter data of sea clutter FRFT domain, and the prediction accuracy reaches 83.42%.
{"title":"Logistic regression prediction based on fractal characteristics of sea surface targets","authors":"Shao Fuchi, Xing Hongyan","doi":"10.1109/ICEMI46757.2019.9101436","DOIUrl":"https://doi.org/10.1109/ICEMI46757.2019.9101436","url":null,"abstract":"Sea clutter is a kind of signal with low signal-to-noise ratio. Fractional Fourier transform is used to gather energy. Fractional Brownian motion model is introduced to model sea clutter. Based on the measured data of IPIX radar, high-order multi-fractal parameters are calculated. Fitting the multi-fractal parameters, choosing the steepest interval and calculating its slope. At the same time, choosing the fractal parameters with scale -30 under HH and VV polarization. The small targets are 0 and 1, respectively. The slope and high-scale fractal parameters of different sea conditions are normalized, and the normalized data are predicted by logistic regression. The simulation results show that FRFT can aggregate the energy of sea clutter signal. Logistic regression model can predict the fractal parameter data of sea clutter FRFT domain, and the prediction accuracy reaches 83.42%.","PeriodicalId":419168,"journal":{"name":"2019 14th IEEE International Conference on Electronic Measurement & Instruments (ICEMI)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123521152","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 : 2019-11-01DOI: 10.1109/ICEMI46757.2019.9101567
Cui Bowen, Tian Wei
The paper presents a technique of fault detection and diagnosis for open-circuit fault of power switch in inverter-fed motor drives based on wavelet and support vector machine (SVM). The output current of the inverter is processed by wavelet transform, the coefficient value of the recursive wavelet transform is obtained and the value can be used for fault detection. The layer detail coefficient and its energy are obtained by wavelet transform and the fault features are got by normalized the energy. Tri-class SVM is used to isolate switch faults. The classification accuracies obtained from the testing samples are 95.6 and 93.3% with SVM1 and SVM2, respectively. The simulation results show that the method can detect and isolate the faults effectively.
{"title":"Switch open-circuit faults diagnosis of inverter based on wavelet and support vector machine","authors":"Cui Bowen, Tian Wei","doi":"10.1109/ICEMI46757.2019.9101567","DOIUrl":"https://doi.org/10.1109/ICEMI46757.2019.9101567","url":null,"abstract":"The paper presents a technique of fault detection and diagnosis for open-circuit fault of power switch in inverter-fed motor drives based on wavelet and support vector machine (SVM). The output current of the inverter is processed by wavelet transform, the coefficient value of the recursive wavelet transform is obtained and the value can be used for fault detection. The layer detail coefficient and its energy are obtained by wavelet transform and the fault features are got by normalized the energy. Tri-class SVM is used to isolate switch faults. The classification accuracies obtained from the testing samples are 95.6 and 93.3% with SVM1 and SVM2, respectively. The simulation results show that the method can detect and isolate the faults effectively.","PeriodicalId":419168,"journal":{"name":"2019 14th IEEE International Conference on Electronic Measurement & Instruments (ICEMI)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127789538","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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