Pub Date : 2019-11-01DOI: 10.1109/ICEMI46757.2019.9101799
Zhao Yamin, Cui Junning, Zou Limin, Cheng Zhongyi, Lu Yesheng
Electromagnetic actuators that produce high linearity driving force are key components in active vibration isolation. In this paper, a design of high linearity electromagnetic actuator is proposed. Scheme of double closed magnetic circuits is used to ensure the linearity of magnetic flux density and rectangular structure is adopted to ensure the processing and assembly precision. The magnetic circuits of electromagnetic actuator are modeled using lumped parameter magnetic circuit modeling method, validated by simulation, and optimized to obtain improved performance. Experimental results show that magnetic flux density of 293.2mT and non-linearity of} 0.37% is achieved.
{"title":"High linearity electromagnetic actuator using double closed rectangular magnetic circuits for active vibration isolation","authors":"Zhao Yamin, Cui Junning, Zou Limin, Cheng Zhongyi, Lu Yesheng","doi":"10.1109/ICEMI46757.2019.9101799","DOIUrl":"https://doi.org/10.1109/ICEMI46757.2019.9101799","url":null,"abstract":"Electromagnetic actuators that produce high linearity driving force are key components in active vibration isolation. In this paper, a design of high linearity electromagnetic actuator is proposed. Scheme of double closed magnetic circuits is used to ensure the linearity of magnetic flux density and rectangular structure is adopted to ensure the processing and assembly precision. The magnetic circuits of electromagnetic actuator are modeled using lumped parameter magnetic circuit modeling method, validated by simulation, and optimized to obtain improved performance. Experimental results show that magnetic flux density of 293.2mT and non-linearity of} 0.37% is achieved.","PeriodicalId":419168,"journal":{"name":"2019 14th IEEE International Conference on Electronic Measurement & Instruments (ICEMI)","volume":"1 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":"128691944","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/ICEMI46757.2019.9101528
Fang Xiaoyong, Ma Jiemei
This study aims to design fixtures used on the horizontal and vertical shake tables to improve measuring accuracy for the seismometer under test. Based on ANSYS, the model analysis is applied with finite element method. After multiple calculations and calibrations, optimization models are finalized, and then material objects are manufactured basing on the models. It suggests that the fixtures effectively satisfy the high-frequency measurement of seismometer by tight couple between the seismometer and fixture located on the shake table with experimental tests. Also using the dial, accurate azimuth angle is obtained easily. The seismometer is repositioned based on the angle and cross-sensitivity will be got with more accuracy.
{"title":"Improvements for seismometers testing on shake table","authors":"Fang Xiaoyong, Ma Jiemei","doi":"10.1109/ICEMI46757.2019.9101528","DOIUrl":"https://doi.org/10.1109/ICEMI46757.2019.9101528","url":null,"abstract":"This study aims to design fixtures used on the horizontal and vertical shake tables to improve measuring accuracy for the seismometer under test. Based on ANSYS, the model analysis is applied with finite element method. After multiple calculations and calibrations, optimization models are finalized, and then material objects are manufactured basing on the models. It suggests that the fixtures effectively satisfy the high-frequency measurement of seismometer by tight couple between the seismometer and fixture located on the shake table with experimental tests. Also using the dial, accurate azimuth angle is obtained easily. The seismometer is repositioned based on the angle and cross-sensitivity will be got with more accuracy.","PeriodicalId":419168,"journal":{"name":"2019 14th IEEE International Conference on Electronic Measurement & Instruments (ICEMI)","volume":"69 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":"127249453","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/ICEMI46757.2019.9101416
Hu Mei, Changyi Hu, Guangming Wang
In this paper, a novel evaluation method to evaluate the effectiveness of UAV navigation spoofing is proposed. The evaluation index system of UAV navigation spoofing effectiveness is proposed from three aspects: system device, spoofing signal and spoofing ability. According to the basic principles of navigation spoofing and the actual application requirements, the success probability criterion, scope criterion, spoofing precision criterion, spoofing power criterion and spoofing time criterion are selected. Based on the comprehensive method of hierarchy analysis and fuzzy evaluation, a reasonable evaluation model of UAV navigation spoofing effectiveness is constructed. Through simulation analysis of the effectiveness evaluation case of specific UAV navigation spoofing, the feasibility of the proposed evaluation method is validated.
{"title":"Novel method to evaluate the effectiveness of UAV navigation spoofing","authors":"Hu Mei, Changyi Hu, Guangming Wang","doi":"10.1109/ICEMI46757.2019.9101416","DOIUrl":"https://doi.org/10.1109/ICEMI46757.2019.9101416","url":null,"abstract":"In this paper, a novel evaluation method to evaluate the effectiveness of UAV navigation spoofing is proposed. The evaluation index system of UAV navigation spoofing effectiveness is proposed from three aspects: system device, spoofing signal and spoofing ability. According to the basic principles of navigation spoofing and the actual application requirements, the success probability criterion, scope criterion, spoofing precision criterion, spoofing power criterion and spoofing time criterion are selected. Based on the comprehensive method of hierarchy analysis and fuzzy evaluation, a reasonable evaluation model of UAV navigation spoofing effectiveness is constructed. Through simulation analysis of the effectiveness evaluation case of specific UAV navigation spoofing, the feasibility of the proposed evaluation method is validated.","PeriodicalId":419168,"journal":{"name":"2019 14th IEEE International Conference on Electronic Measurement & Instruments (ICEMI)","volume":"11 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":"127348464","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/ICEMI46757.2019.9101693
Zou Hai, Li Liang, Zheng Ying
For the vertical natural circulation steam generators, the nonlinear mathematical model of the steam generator is established by applying the modular mechanism modeling method. Comprising 16 control bodies, the model establishes mathematical model for each control body for derivation by lumped parameter method, with a mathematical model with 12 state variables obtained. The three-impulse control method is applied to automatically control the water level of the steam generator. The model is then solved by Runge-Kutta method. The simulation test is then performed for the steam generator’s water level control system to verify the dynamic characteristics of the model. With this model, it is possible to analyze the dynamic characteristics of the steam generator and design the steam generator controller, thus it is of certain significance in engineering application.
{"title":"Modelling and simulation of water control system of vertical natural circulation steam generators","authors":"Zou Hai, Li Liang, Zheng Ying","doi":"10.1109/ICEMI46757.2019.9101693","DOIUrl":"https://doi.org/10.1109/ICEMI46757.2019.9101693","url":null,"abstract":"For the vertical natural circulation steam generators, the nonlinear mathematical model of the steam generator is established by applying the modular mechanism modeling method. Comprising 16 control bodies, the model establishes mathematical model for each control body for derivation by lumped parameter method, with a mathematical model with 12 state variables obtained. The three-impulse control method is applied to automatically control the water level of the steam generator. The model is then solved by Runge-Kutta method. The simulation test is then performed for the steam generator’s water level control system to verify the dynamic characteristics of the model. With this model, it is possible to analyze the dynamic characteristics of the steam generator and design the steam generator controller, thus it is of certain significance in engineering application.","PeriodicalId":419168,"journal":{"name":"2019 14th IEEE International Conference on Electronic Measurement & Instruments (ICEMI)","volume":"1 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":"130065417","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/ICEMI46757.2019.9101580
Xiangyang Zhou, Xinyue Liu, Yang Chao
In order to improve the tracking accuracy and stabilization of an inertially stabilized platform (ISP), a disturbance rejection method based on robust H∞ control is proposed. The controller of tracking loop is designed by using the robust H∞ loop-shaping control method, in which the frequency shaping of the tracking loop is conducted through the designed front and rear compensators. By using the call function in Matlab toolbox, the controller coefficients are obtained that can meet the requirements of robust maximum stability boundary. The controller and compensator are combined to obtain the robust H∞ loop-shaping controller. Finally, the experiments are carried out to verify the method. Compared with the PID control, the stabilization accuracy of the ISP has been greatly improved and the robust H∞ control method has significant disturbance rejection capability,.
{"title":"Disturbances rejection based on robust H∞ control for an aerial inertially stabilized platform","authors":"Xiangyang Zhou, Xinyue Liu, Yang Chao","doi":"10.1109/ICEMI46757.2019.9101580","DOIUrl":"https://doi.org/10.1109/ICEMI46757.2019.9101580","url":null,"abstract":"In order to improve the tracking accuracy and stabilization of an inertially stabilized platform (ISP), a disturbance rejection method based on robust H∞ control is proposed. The controller of tracking loop is designed by using the robust H∞ loop-shaping control method, in which the frequency shaping of the tracking loop is conducted through the designed front and rear compensators. By using the call function in Matlab toolbox, the controller coefficients are obtained that can meet the requirements of robust maximum stability boundary. The controller and compensator are combined to obtain the robust H∞ loop-shaping controller. Finally, the experiments are carried out to verify the method. Compared with the PID control, the stabilization accuracy of the ISP has been greatly improved and the robust H∞ control method has significant disturbance rejection capability,.","PeriodicalId":419168,"journal":{"name":"2019 14th IEEE International Conference on Electronic Measurement & Instruments (ICEMI)","volume":"23 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":"126930074","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/ICEMI46757.2019.9101426
Wang Yifan, Chen Kai, Xu Bo, Yang Yunpeng, Luan Yun
Accurate fundamental frequency measurement has a significant role in synchronous sampling and power parameter analysis. However, the large amount of harmonics appearing in circuits makes it difficult to measure the fundamental frequency. ln this work, we propose a fundamental frequency measurement architecture that combines FFT algorithm with period measurement method. This method can reduce the frequency resolution limitation in FFT between sampling rates and calculating length. This integrated method is appropriate to measure the fundamental frequency of signal that contains a large amount of harmonics. Experimental results show that the frequency of signal with large amplitude harmonics can be measured accurately by using the proposed structure.
{"title":"A high precision fundamental frequency measurement method based on FPGA","authors":"Wang Yifan, Chen Kai, Xu Bo, Yang Yunpeng, Luan Yun","doi":"10.1109/ICEMI46757.2019.9101426","DOIUrl":"https://doi.org/10.1109/ICEMI46757.2019.9101426","url":null,"abstract":"Accurate fundamental frequency measurement has a significant role in synchronous sampling and power parameter analysis. However, the large amount of harmonics appearing in circuits makes it difficult to measure the fundamental frequency. ln this work, we propose a fundamental frequency measurement architecture that combines FFT algorithm with period measurement method. This method can reduce the frequency resolution limitation in FFT between sampling rates and calculating length. This integrated method is appropriate to measure the fundamental frequency of signal that contains a large amount of harmonics. Experimental results show that the frequency of signal with large amplitude harmonics can be measured accurately by using the proposed structure.","PeriodicalId":419168,"journal":{"name":"2019 14th IEEE International Conference on Electronic Measurement & Instruments (ICEMI)","volume":"42 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":"130563537","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/ICEMI46757.2019.9101503
Liang Hao, Song Lei, Wang Dandan, Cui Jianwen
To solve the problem that it is difficult to evaluate and optimize the top-level system design scheme of complex products, a method of building collaborative dynamic process management system based on MBSE is proposed. Combining with the system engineering theory based on model, the architecture design and function decomposition of the system are carried out, and the core function modules of the collaborative dynamic process management system are analyzed and described..1
{"title":"Collaborative dynamic process management system based on MBSE","authors":"Liang Hao, Song Lei, Wang Dandan, Cui Jianwen","doi":"10.1109/ICEMI46757.2019.9101503","DOIUrl":"https://doi.org/10.1109/ICEMI46757.2019.9101503","url":null,"abstract":"To solve the problem that it is difficult to evaluate and optimize the top-level system design scheme of complex products, a method of building collaborative dynamic process management system based on MBSE is proposed. Combining with the system engineering theory based on model, the architecture design and function decomposition of the system are carried out, and the core function modules of the collaborative dynamic process management system are analyzed and described..1","PeriodicalId":419168,"journal":{"name":"2019 14th IEEE International Conference on Electronic Measurement & Instruments (ICEMI)","volume":"1 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":"130212730","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/ICEMI46757.2019.9101421
Guo Lianping, Meng Jie, Tian Yu, Jiang Jun, Ye Peng
To eliminate the influence of gain and phase imbalance between in-phase (I) and quadrature (Q) signals on receiver performance featuring the quadrature mixing, a method of estimating the imbalance parameters of I/Q signals is proposed based on the quadrature relation of I/Q channels in time domain. The method uses the output signal of channel I after Hilbert transform as the ideal reference signal to calculate the gain and phase error parameters of channel Q by sine curve fitting (SCF) and least square method (LSM). Experimental tests show that the proposed algorithm can estimate the I/Q imbalance parameters effectively and accurately.
{"title":"A Hilbert transform and sine curve fitting-based method for estimating gain and phase errors in quadrature mixing structure","authors":"Guo Lianping, Meng Jie, Tian Yu, Jiang Jun, Ye Peng","doi":"10.1109/ICEMI46757.2019.9101421","DOIUrl":"https://doi.org/10.1109/ICEMI46757.2019.9101421","url":null,"abstract":"To eliminate the influence of gain and phase imbalance between in-phase (I) and quadrature (Q) signals on receiver performance featuring the quadrature mixing, a method of estimating the imbalance parameters of I/Q signals is proposed based on the quadrature relation of I/Q channels in time domain. The method uses the output signal of channel I after Hilbert transform as the ideal reference signal to calculate the gain and phase error parameters of channel Q by sine curve fitting (SCF) and least square method (LSM). Experimental tests show that the proposed algorithm can estimate the I/Q imbalance parameters effectively and accurately.","PeriodicalId":419168,"journal":{"name":"2019 14th IEEE International Conference on Electronic Measurement & Instruments (ICEMI)","volume":"94 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":"127911366","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}
To promote the efficient use of spectrum resources, cognitive radio (CR) has been proposed. Spectrum sensing is the core technology of CR. In spectrum sensing, idle frequency bands should be detected for secondary users. Signal detection in spectrum sensing is a recent active research topic. Conventional spectrum sensing methods are based on Nyquist sampling and have high hardware requirements, thus limiting the use of these methods. The proposed compression sampling theory can overcome the limitation of Nyquist sampling and can solve this problem. In high-speed sampling, the effect of quantization noise is becoming more significant. In this paper, we study the signal detection in compressed sampling under the influence of quantization noise. Since the quantization noise is related to the quantization bits, we derive the relationship between the quantization bits and the detection rate (PD). We also consider the input noise and investigate its impact on signal detection. Due the amplification of input noise in compressive sampling process, in comparison to the quantization noise, the input noise exhibits more serious impact on detection performance.
{"title":"Signal detection with quantization noise based on compressive sensing acquisition system","authors":"Zheng Yanze, Zhao Yijiu, Zhuang Yi, Chen Yu, Xiaojuan Wu","doi":"10.1109/ICEMI46757.2019.9101661","DOIUrl":"https://doi.org/10.1109/ICEMI46757.2019.9101661","url":null,"abstract":"To promote the efficient use of spectrum resources, cognitive radio (CR) has been proposed. Spectrum sensing is the core technology of CR. In spectrum sensing, idle frequency bands should be detected for secondary users. Signal detection in spectrum sensing is a recent active research topic. Conventional spectrum sensing methods are based on Nyquist sampling and have high hardware requirements, thus limiting the use of these methods. The proposed compression sampling theory can overcome the limitation of Nyquist sampling and can solve this problem. In high-speed sampling, the effect of quantization noise is becoming more significant. In this paper, we study the signal detection in compressed sampling under the influence of quantization noise. Since the quantization noise is related to the quantization bits, we derive the relationship between the quantization bits and the detection rate (PD). We also consider the input noise and investigate its impact on signal detection. Due the amplification of input noise in compressive sampling process, in comparison to the quantization noise, the input noise exhibits more serious impact on detection performance.","PeriodicalId":419168,"journal":{"name":"2019 14th IEEE International Conference on Electronic Measurement & Instruments (ICEMI)","volume":"413 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":"126694224","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/ICEMI46757.2019.9101750
Chen Haibin, Lu Hao, Wang Jinda
Aiming at the dynamic test requirement of SINS/GNSS integrated navigation system for air-to-air missile in laboratory, a test method for simulating the air motion environment in laboratory is proposed. The performance evaluation tests of missile-borne navigation system based on dynamic transfer alignment and ballistic integrated navigation can be carried out in laboratory. This test method solves the problem that the estimation accuracy of misalignment angle can not be accurately evaluated due to the insufficient excitation of angular velocity and acceleration in ground test, and makes up for the insufficient coverage of ground test of integrated navigation system. The solution of key technical problems in the construction of test system is given, the alignment and integrated navigation algorithm used in the test are explained. Finally, the precision test of transfer alignment and integrated navigation is carried out by using optical fiber inertial navigation and satellite navigation receiver. The test results show that the test method proposed is feasible and practical.
{"title":"Design of SINS/GNSS integrated navigation dynamic test system for air-to-air missile","authors":"Chen Haibin, Lu Hao, Wang Jinda","doi":"10.1109/ICEMI46757.2019.9101750","DOIUrl":"https://doi.org/10.1109/ICEMI46757.2019.9101750","url":null,"abstract":"Aiming at the dynamic test requirement of SINS/GNSS integrated navigation system for air-to-air missile in laboratory, a test method for simulating the air motion environment in laboratory is proposed. The performance evaluation tests of missile-borne navigation system based on dynamic transfer alignment and ballistic integrated navigation can be carried out in laboratory. This test method solves the problem that the estimation accuracy of misalignment angle can not be accurately evaluated due to the insufficient excitation of angular velocity and acceleration in ground test, and makes up for the insufficient coverage of ground test of integrated navigation system. The solution of key technical problems in the construction of test system is given, the alignment and integrated navigation algorithm used in the test are explained. Finally, the precision test of transfer alignment and integrated navigation is carried out by using optical fiber inertial navigation and satellite navigation receiver. The test results show that the test method proposed is feasible and practical.","PeriodicalId":419168,"journal":{"name":"2019 14th IEEE International Conference on Electronic Measurement & Instruments (ICEMI)","volume":"444 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":"123209389","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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