The fault signal of rolling bearing has the characteristic of non-stationary, nonlinear and so on, the mode mixing phenomenon may occur in the process of empirical mode de-composition. Ensemble empirical mode decomposition (EEMD) algorithm is introduce random Gaussian white noise sequence in the original signal to change the local time of the signal span, Which can inhibit the mode mixing phenomenon in the process of the conventional empirical mode decomposition. On the basis of the principles of the EEMD, This paper introduced the Amplitude standard deviation criterion to select the EEMD parameters. And for each intrinsic mode function (IMF) components decomposed by correlation coefficient method to extract the effect intrinsic mode component, then through threshold and reconstructing each effective intrinsic mode function. Finally the envelop spectrum of the signal was analyzed, extracted the fault characteristics of the rolling bearings. Simulation and fault signals experimental results show that, EEMD method can be effectively applied to fault diagnosis of rolling bearings.
{"title":"Fault Diagnosis of Rolling Element Bearing Based on Improved Ensemble Empirical Mode Decomposition","authors":"Xiaofeng Yue, H. Shao","doi":"10.1109/IHMSC.2015.154","DOIUrl":"https://doi.org/10.1109/IHMSC.2015.154","url":null,"abstract":"The fault signal of rolling bearing has the characteristic of non-stationary, nonlinear and so on, the mode mixing phenomenon may occur in the process of empirical mode de-composition. Ensemble empirical mode decomposition (EEMD) algorithm is introduce random Gaussian white noise sequence in the original signal to change the local time of the signal span, Which can inhibit the mode mixing phenomenon in the process of the conventional empirical mode decomposition. On the basis of the principles of the EEMD, This paper introduced the Amplitude standard deviation criterion to select the EEMD parameters. And for each intrinsic mode function (IMF) components decomposed by correlation coefficient method to extract the effect intrinsic mode component, then through threshold and reconstructing each effective intrinsic mode function. Finally the envelop spectrum of the signal was analyzed, extracted the fault characteristics of the rolling bearings. Simulation and fault signals experimental results show that, EEMD method can be effectively applied to fault diagnosis of rolling bearings.","PeriodicalId":6592,"journal":{"name":"2015 7th International Conference on Intelligent Human-Machine Systems and Cybernetics","volume":"126 1","pages":"52-55"},"PeriodicalIF":0.0,"publicationDate":"2015-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88688349","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}
Scheduling and controller design problems of networked control systems subject to time-delay and communication constraints are considered in this paper. Firstly, the networked control system with time-delay is modeled as a discrete-switched system with uncertain parameters under the influence of communication sequence scheduling. Then via the average dwell time method of switched systems and Lyapunove functional, the exponential stability of the system is researched. Furthermore, based on LMI algorithm, the scheduling strategy and controller of the networked control system are co-designed and a state feedback control law design algorithm is proposed. Finally, a numerical example is provided to demonstrate the effectiveness of the algorithm.
{"title":"Co-design of Scheduling and Control for Networked Control Systems with Time-Delay and Communication Constraints","authors":"Ning Wang, Yong Zhang","doi":"10.1109/IHMSC.2015.81","DOIUrl":"https://doi.org/10.1109/IHMSC.2015.81","url":null,"abstract":"Scheduling and controller design problems of networked control systems subject to time-delay and communication constraints are considered in this paper. Firstly, the networked control system with time-delay is modeled as a discrete-switched system with uncertain parameters under the influence of communication sequence scheduling. Then via the average dwell time method of switched systems and Lyapunove functional, the exponential stability of the system is researched. Furthermore, based on LMI algorithm, the scheduling strategy and controller of the networked control system are co-designed and a state feedback control law design algorithm is proposed. Finally, a numerical example is provided to demonstrate the effectiveness of the algorithm.","PeriodicalId":6592,"journal":{"name":"2015 7th International Conference on Intelligent Human-Machine Systems and Cybernetics","volume":"20 1","pages":"256-259"},"PeriodicalIF":0.0,"publicationDate":"2015-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82762891","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}
Ping Lu, Wen-Jin Wang, Ping Du, Ting Wu, Ling Yang, Deyuan Li
This paper presents an intelligent vacuum monitoring system for mass spectrometer based on PC104. This system mainly consists of high-speed analog signal acquisition, data filtering based on PIC32, and real-time anti-jamming communication technology. A high-speed AD converter is employed to acquire external physical quantities that are to be monitored. According to the characteristics of AD signal's random disturbance, a moving average filter is used to reduce noise while giving consideration to the real-time request of the system. Afterwards, an error-resilient status transfer mechanism is proposed during communication with the master computer to guarantee transmission reliability. Experimental results show that while possessing good real-time capability and low power consumption, the noise factors of the vacuum and temperature measuring data processed by this filtering algorithm are decreased by 58.4% and 60.2% respectively. Hence, the proposed system satisfies the requirements of real-time monitoring in harsh field condition.
{"title":"An Intelligent Mass Spectrometer Vacuum Monitoring System Based on PC104","authors":"Ping Lu, Wen-Jin Wang, Ping Du, Ting Wu, Ling Yang, Deyuan Li","doi":"10.1109/IHMSC.2015.64","DOIUrl":"https://doi.org/10.1109/IHMSC.2015.64","url":null,"abstract":"This paper presents an intelligent vacuum monitoring system for mass spectrometer based on PC104. This system mainly consists of high-speed analog signal acquisition, data filtering based on PIC32, and real-time anti-jamming communication technology. A high-speed AD converter is employed to acquire external physical quantities that are to be monitored. According to the characteristics of AD signal's random disturbance, a moving average filter is used to reduce noise while giving consideration to the real-time request of the system. Afterwards, an error-resilient status transfer mechanism is proposed during communication with the master computer to guarantee transmission reliability. Experimental results show that while possessing good real-time capability and low power consumption, the noise factors of the vacuum and temperature measuring data processed by this filtering algorithm are decreased by 58.4% and 60.2% respectively. Hence, the proposed system satisfies the requirements of real-time monitoring in harsh field condition.","PeriodicalId":6592,"journal":{"name":"2015 7th International Conference on Intelligent Human-Machine Systems and Cybernetics","volume":"48 1","pages":"149-152"},"PeriodicalIF":0.0,"publicationDate":"2015-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80617017","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}
Erasure codes, such as Reed-Solomn (RS) and CRS Codes, are being extensively deployed in distributed storage system since they offer significantly higher reliability than data replication methods at much lower storage overheads. But RS and CRS codes always impose a huge burden on system's performance while encoding and decoding when they provide significant savings in storage space. This paper puts forward an optimized algorithm named ICRS (Improved CRS) based on erasure coding technology, which is committed to improve the security and the utilization of storage space. By studying existing high reliability and space saving rate of coding technology, we imported coding mechanism into distributed storage systems. We have verified ICRS algorithm by theory analysis and simulation test. Through theory analysis, we can conclude that ICRS algorithm can improve the performance of encoding and decoding because they can shorten the computation times. We apply ICRS algorithm into our storage system model named Robot to test the performance. At the same time, we compare RS codes and CRS codes in Robot. The test results show that decoding speed can rise up nearly two times than the past serial decoding speed.
{"title":"ICRS: An Optimized Algorithm to Improve Performance in Distributed Storage System","authors":"Chao Yin, Haitao Lv, Zongmin Cui, Tongfang Li, Lili Rao, Zhi Wang","doi":"10.1109/IHMSC.2015.219","DOIUrl":"https://doi.org/10.1109/IHMSC.2015.219","url":null,"abstract":"Erasure codes, such as Reed-Solomn (RS) and CRS Codes, are being extensively deployed in distributed storage system since they offer significantly higher reliability than data replication methods at much lower storage overheads. But RS and CRS codes always impose a huge burden on system's performance while encoding and decoding when they provide significant savings in storage space. This paper puts forward an optimized algorithm named ICRS (Improved CRS) based on erasure coding technology, which is committed to improve the security and the utilization of storage space. By studying existing high reliability and space saving rate of coding technology, we imported coding mechanism into distributed storage systems. We have verified ICRS algorithm by theory analysis and simulation test. Through theory analysis, we can conclude that ICRS algorithm can improve the performance of encoding and decoding because they can shorten the computation times. We apply ICRS algorithm into our storage system model named Robot to test the performance. At the same time, we compare RS codes and CRS codes in Robot. The test results show that decoding speed can rise up nearly two times than the past serial decoding speed.","PeriodicalId":6592,"journal":{"name":"2015 7th International Conference on Intelligent Human-Machine Systems and Cybernetics","volume":"7 1","pages":"561-564"},"PeriodicalIF":0.0,"publicationDate":"2015-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84337761","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}
Land-use spatial districting is in essence of a problem with multi-objective optimization decision under hard constraints, this paper constructs a solving model by two core steps: one is to design multi-objective tabu search algorithm, and then design an interactive decision-making support tool. Finally, the method has been tested for farmland consolidation districting. Experimental results show that the approval method can provide scientific and intelligent decision-making support for the formulation and implementation of the regional land-use planning.
{"title":"A Multi-objective Optimization Decision Model Assisting the Land-Use Spatial Districting under Hard Constraints","authors":"Zeying Lan, Yang Liu","doi":"10.1109/IHMSC.2015.220","DOIUrl":"https://doi.org/10.1109/IHMSC.2015.220","url":null,"abstract":"Land-use spatial districting is in essence of a problem with multi-objective optimization decision under hard constraints, this paper constructs a solving model by two core steps: one is to design multi-objective tabu search algorithm, and then design an interactive decision-making support tool. Finally, the method has been tested for farmland consolidation districting. Experimental results show that the approval method can provide scientific and intelligent decision-making support for the formulation and implementation of the regional land-use planning.","PeriodicalId":6592,"journal":{"name":"2015 7th International Conference on Intelligent Human-Machine Systems and Cybernetics","volume":"34 1","pages":"36-39"},"PeriodicalIF":0.0,"publicationDate":"2015-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74373144","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}
Headphone equalization, which is accomplished by multiplying the inverse of headphone-to-ear-canal transfer functions (HpTFs), is necessary in headphone-presented virtual sound reproduction. Therefore, measurement accuracy of HpTFs is vital to guarantee an authentic virtual sound reproduction. To evaluate the perceptual influence of intra-individual differences in HpTF measurements on headphone equalization and hence virtual sound reproduction, repeated measurements of HpTFs were conducted on an artificial head and human subjects, and then were analyzed using perceptual-motivated objective comparisons in three frequency ranges. Moreover, a series of psychoacoustic experiments were carried out. Results indicate that the intra-subject differences in HpTFs are inaudible in any of the frequency ranges, suggesting a single measurement is perceptually adequate to represent the individual HpTF.
{"title":"Reliability of Headphone Equalization in Virtual Sound Reproduction","authors":"Xiaoli Zhong, Bei Shi","doi":"10.1109/IHMSC.2015.158","DOIUrl":"https://doi.org/10.1109/IHMSC.2015.158","url":null,"abstract":"Headphone equalization, which is accomplished by multiplying the inverse of headphone-to-ear-canal transfer functions (HpTFs), is necessary in headphone-presented virtual sound reproduction. Therefore, measurement accuracy of HpTFs is vital to guarantee an authentic virtual sound reproduction. To evaluate the perceptual influence of intra-individual differences in HpTF measurements on headphone equalization and hence virtual sound reproduction, repeated measurements of HpTFs were conducted on an artificial head and human subjects, and then were analyzed using perceptual-motivated objective comparisons in three frequency ranges. Moreover, a series of psychoacoustic experiments were carried out. Results indicate that the intra-subject differences in HpTFs are inaudible in any of the frequency ranges, suggesting a single measurement is perceptually adequate to represent the individual HpTF.","PeriodicalId":6592,"journal":{"name":"2015 7th International Conference on Intelligent Human-Machine Systems and Cybernetics","volume":"40 1","pages":"87-90"},"PeriodicalIF":0.0,"publicationDate":"2015-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74556191","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}
Industrial Cyber-Physical Systems are deployed in harsh and noisy environments for process measurement and control applications. Missing or delaying of the process data may severely degrade the overall control performance. Methods compensating for the high probability of bit errors accompanying wireless transmissions in Cyber-Physical Systems are needed. In this paper, a way of combining retransmissions with real-time scheduling analysis is presented. The presented solution handles several retransmission attempts of erroneous data without jeopardizing the guaranteed delay bounds of other packets. A real-time analysis that utilizes the retransmission scheme is provided. A simulation study is presented that evaluates the performance of the retransmission scheme for bit-error rates. The results indicate a possible reduction of the message error rate by several orders of magnitude.
{"title":"An Efficient Data Transmission Strategy for Cyber-Physical Systems in the Complicated Environment","authors":"Kaifei Fang, Benhua Guo","doi":"10.1109/IHMSC.2015.164","DOIUrl":"https://doi.org/10.1109/IHMSC.2015.164","url":null,"abstract":"Industrial Cyber-Physical Systems are deployed in harsh and noisy environments for process measurement and control applications. Missing or delaying of the process data may severely degrade the overall control performance. Methods compensating for the high probability of bit errors accompanying wireless transmissions in Cyber-Physical Systems are needed. In this paper, a way of combining retransmissions with real-time scheduling analysis is presented. The presented solution handles several retransmission attempts of erroneous data without jeopardizing the guaranteed delay bounds of other packets. A real-time analysis that utilizes the retransmission scheme is provided. A simulation study is presented that evaluates the performance of the retransmission scheme for bit-error rates. The results indicate a possible reduction of the message error rate by several orders of magnitude.","PeriodicalId":6592,"journal":{"name":"2015 7th International Conference on Intelligent Human-Machine Systems and Cybernetics","volume":"23 1","pages":"541-545"},"PeriodicalIF":0.0,"publicationDate":"2015-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74081785","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 overcome the problem that the approximation error of the slip surface feature is bigger when using traditional methods to analyze the stability of loess slope, a new method is put forward. At first, the mathematical model was used to simplify the slip surface of loess slope as logarithmic spiral shape, and then the formula of stability coefficient was deduced to establish the mechanical analysis model of instability slope. At last, the variable-step optimization algorithm was adopted to calculate the minimum stability coefficient. The application instance shows that using logarithmic spiral curve to fit the slip surface feature can conform with the practical failure characteristic of loess slope closely. The variable-step optimization algorithm proposed can improve both convergence rate and accuracy, and its computation results are exactly consistent with the actual facts of loess slope.
{"title":"A New Stability Analysis Method for Loess Slope Based on Logarithmic Spiral Curve","authors":"Xi-hua Long, Y. Zhao, Ling Yang","doi":"10.1109/IHMSC.2015.221","DOIUrl":"https://doi.org/10.1109/IHMSC.2015.221","url":null,"abstract":"To overcome the problem that the approximation error of the slip surface feature is bigger when using traditional methods to analyze the stability of loess slope, a new method is put forward. At first, the mathematical model was used to simplify the slip surface of loess slope as logarithmic spiral shape, and then the formula of stability coefficient was deduced to establish the mechanical analysis model of instability slope. At last, the variable-step optimization algorithm was adopted to calculate the minimum stability coefficient. The application instance shows that using logarithmic spiral curve to fit the slip surface feature can conform with the practical failure characteristic of loess slope closely. The variable-step optimization algorithm proposed can improve both convergence rate and accuracy, and its computation results are exactly consistent with the actual facts of loess slope.","PeriodicalId":6592,"journal":{"name":"2015 7th International Conference on Intelligent Human-Machine Systems and Cybernetics","volume":"31 1","pages":"323-326"},"PeriodicalIF":0.0,"publicationDate":"2015-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81070117","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}
This paper puts forward active disturbance rejection control (ADRC) technology in the application of unmanned aerial vehicle (UAV). In order to solve the parameters optimization problem of ADRC, genetic algorithm (GA) is proposed, which does not depend on the experience of human heavily. Whose basic principle is introduced in this paper as well, then it improves the efficiency of parameters optimization. Disturbance is added to the state of flight to reflect the anti-interference ability of this combined algorithm. Finally, the simulation of F16 model is carried out to verify that the improved method has good control preference.
{"title":"ADRC and GA Algorithm for Fixed-Wing UAV","authors":"Dali Zhou, Qingbo Geng, Baokui Li","doi":"10.1109/IHMSC.2015.93","DOIUrl":"https://doi.org/10.1109/IHMSC.2015.93","url":null,"abstract":"This paper puts forward active disturbance rejection control (ADRC) technology in the application of unmanned aerial vehicle (UAV). In order to solve the parameters optimization problem of ADRC, genetic algorithm (GA) is proposed, which does not depend on the experience of human heavily. Whose basic principle is introduced in this paper as well, then it improves the efficiency of parameters optimization. Disturbance is added to the state of flight to reflect the anti-interference ability of this combined algorithm. Finally, the simulation of F16 model is carried out to verify that the improved method has good control preference.","PeriodicalId":6592,"journal":{"name":"2015 7th International Conference on Intelligent Human-Machine Systems and Cybernetics","volume":"63 1 1","pages":"248-251"},"PeriodicalIF":0.0,"publicationDate":"2015-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80874664","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}
The smart antenna system using array antenna and array signal processing technique is extended from the traditional frequency domain, the array signal processing has been quite widely applied and developed. The wave phase error has a great influence on uniform linear array direction-of-arrival (DOA) estimation accuracy and resolution. We use the chaos (banderol) uniform linear array element to form the receiving array, the chaotic system is extreme sensitivity of the input signal phase delay. Simulation result show that the chaotic linear array has very good estimation precision, multipath interference can be effectively resisted, and the receiving system has good immunity to non-Gaussian color noise.
{"title":"DOA Analysis of Signal Based on Vanderpol Array","authors":"Zhenbiao Wei, Yonghe Chen, Xiaobing Lu, Kunpeng Zheng","doi":"10.1109/IHMSC.2015.140","DOIUrl":"https://doi.org/10.1109/IHMSC.2015.140","url":null,"abstract":"The smart antenna system using array antenna and array signal processing technique is extended from the traditional frequency domain, the array signal processing has been quite widely applied and developed. The wave phase error has a great influence on uniform linear array direction-of-arrival (DOA) estimation accuracy and resolution. We use the chaos (banderol) uniform linear array element to form the receiving array, the chaotic system is extreme sensitivity of the input signal phase delay. Simulation result show that the chaotic linear array has very good estimation precision, multipath interference can be effectively resisted, and the receiving system has good immunity to non-Gaussian color noise.","PeriodicalId":6592,"journal":{"name":"2015 7th International Conference on Intelligent Human-Machine Systems and Cybernetics","volume":"40 1","pages":"64-67"},"PeriodicalIF":0.0,"publicationDate":"2015-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88175727","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：