{"title":"Reconfigurable multi-stage neural networks in monitoring industrial machines","authors":"H. Marzi","doi":"10.1109/SMCIA.2005.1466963","DOIUrl":"https://doi.org/10.1109/SMCIA.2005.1466963","url":null,"abstract":"A two-stage reconfigurable neural networks (NN) is described for real-time monitoring of onset of faults in a coolant system of a CNC machine. The measured variables in the system are current and pressure signals. The steady state values of these parameters when out of healthy range, are used as stimulus for initiating a non-destructive test. This causes the closure of a flow control valve and results in the transient response of the pump outlet pressure. The transient signal is used as input to the NN which accurately identifies inception of any faults in the system. If the system is faulty, an interprocess communication system (IPC) activates the second stage of the two-stage NN which then tests the transient pattern against the known types of failure and identifies severity of the fault. The double stage design of neural network results in achieving a high accuracy of over 99 percent in fault identification and isolation.","PeriodicalId":283950,"journal":{"name":"Proceedings of the 2005 IEEE Midnight-Summer Workshop on Soft Computing in Industrial Applications, 2005. SMCia/05.","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114080202","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}
{"title":"Comparisons of logistic regression and artificial neural network on power distribution systems fault cause identification","authors":"L. Xu, M. Chow, X.Z. Gao","doi":"10.1109/SMCIA.2005.1466960","DOIUrl":"https://doi.org/10.1109/SMCIA.2005.1466960","url":null,"abstract":"Power distribution systems play an important role in modern society. Proper outage root cause identification is often essential for effective restorations when outages occur. This paper reports on the investigation and results of two classification methods: logistic regression and neural network applied in power distribution fault cause classifier. Logistic regression is seldom used in power distribution fault diagnosis, while neural network, has been extensively used in power system reliability researches. Evaluation criteria of the goodness of the classifier includes: correct classification rate, true positive rate, true negative rate, and geometric mean. Two major distribution faults, tree and animal contact, are used to illustrate the characteristics and effectiveness of the investigated techniques.","PeriodicalId":283950,"journal":{"name":"Proceedings of the 2005 IEEE Midnight-Summer Workshop on Soft Computing in Industrial Applications, 2005. SMCia/05.","volume":"111 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116455261","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}
{"title":"Image processing approach to features extraction in classification of control chart patterns","authors":"K. Lavangnananda, Apivadee Piyatumrong","doi":"10.1109/SMCIA.2005.1466953","DOIUrl":"https://doi.org/10.1109/SMCIA.2005.1466953","url":null,"abstract":"Control chart patterns can be used to determine behavior of system. They are vital in process control as they are used in detecting the abnormalities which may occur. Accurate identification of these charts is necessary to the efficiency and reduction of system troubleshooting time. The accuracy of the classification depends largely on how noisy the signals in these charts are. If their noise ratio is very high, this suggests that reliable classification is almost impossible. One of the major difficulties lies in differentiation between increasing and decreasing patterns especially where gradients of inclination and declination are small. This paper describes an improvement in identifying highly noisy control chart patterns by utilizing features extraction in classification using neural networks in previous works. Features, which were founded useful for the classification, are mean, standard deviation, skewness, and kurtosis. The improvement can be summarized into two factors, the introduction of two more useful features, slope and Pearson correlation coefficient, and the additional transformation derived from the original signal. This work yields better performance than previous works which used the same data set by increasing the overall accuracy from 83.30% to 90.47%.","PeriodicalId":283950,"journal":{"name":"Proceedings of the 2005 IEEE Midnight-Summer Workshop on Soft Computing in Industrial Applications, 2005. SMCia/05.","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123342838","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}
{"title":"An intelligent control scheme with self-updating for industrial processes","authors":"Limin Liu, Ping Yan, Yunxiu Wang, Q. Liu","doi":"10.1109/SMCIA.2005.1466952","DOIUrl":"https://doi.org/10.1109/SMCIA.2005.1466952","url":null,"abstract":"A control scheme based on fuzzy intelligent control for an industrial process in some electric power plants is introduced in this paper. The process is complex, nonlinear and closed couple. An optimized control based on mathematic models is difficult for it. The design of intelligent control is mainly concerned to a fuzzy inferring system based on knowledge. Several rule sets are set up for various applications. One of them can update rules within the control system. It makes the system have a function of rule self-updating. A simulation shows that the scheme is useful.","PeriodicalId":283950,"journal":{"name":"Proceedings of the 2005 IEEE Midnight-Summer Workshop on Soft Computing in Industrial Applications, 2005. SMCia/05.","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128629006","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}
{"title":"Fuzzy logic based sensitivity assessment for winding deformation detection","authors":"S. Santhi, V. Jayashankar","doi":"10.1109/SMCIA.2005.1466942","DOIUrl":"https://doi.org/10.1109/SMCIA.2005.1466942","url":null,"abstract":"The assessment of winding deformation during a short circuit test on a transformer has traditionally been treated as a hard computing problem. Recent developments using frequency response analysis have shown improved sensitivity for detection. The method can be further refined to work on line by concurrent excitation with a high frequency source. Soft computing techniques are used to identify the type of excitation that maximizes the SNR of the measurement and to make it adaptive.","PeriodicalId":283950,"journal":{"name":"Proceedings of the 2005 IEEE Midnight-Summer Workshop on Soft Computing in Industrial Applications, 2005. SMCia/05.","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126090213","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}
{"title":"A predictive thickness control structure and decision about the better control parameter for the cold rolling process through sensitivity factors via neural networks","authors":"L. E. Zarate","doi":"10.1109/SMCIA.2005.1466941","DOIUrl":"https://doi.org/10.1109/SMCIA.2005.1466941","url":null,"abstract":"The single stand rolling mill governing equation is a non-linear function on several parameters (entry thickness, front and back tensions, yield stress and friction coefficient among others). Any alteration in one of them will cause alterations on the rolling load and, consequently, on the outgoing thickness. This paper presents a method to determinate the appropriate adjustment for thickness control considering three possible control parameters: roll gap, front and back tensions. The method uses a predictive model based in the sensitivity equation of the process where the sensitivity factors are obtained by differentiating a neural network previously trained. The method considers as the best control action the one that demands the smallest adjustment. By otherwise, one of the capital issues in the controller design for rolling systems is the difficulty to measure the final thickness without time delays. The time delay is a consequence of the locations of the outgoing sensors that are always placed some distance away from the roll gap. The proposed control system calculates the necessary adjustment based on a predictive model for the output thickness. This model permits to overcome the time delay that exists in such processes. The new structure can eliminate the thickness sensor, usually based on an X-ray detector. Simulation results show the feasibility of the proposed technique.","PeriodicalId":283950,"journal":{"name":"Proceedings of the 2005 IEEE Midnight-Summer Workshop on Soft Computing in Industrial Applications, 2005. SMCia/05.","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132754223","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}
{"title":"Tuning of PID controller using gain/phase margin and immune algorithm","authors":"Dong Hwa Kim","doi":"10.1109/SMCIA.2005.1466950","DOIUrl":"https://doi.org/10.1109/SMCIA.2005.1466950","url":null,"abstract":"Up to the present time, PID controller has been widely used to control industrial process loops because of its implementational advantages. However, it is very difficult to achieve an optimal PID gain with no experience, since the parameters of the PID controller has to be manually tuned by trial and error. This paper focuses on tuning of the PID controller using gain/phase margin and immune algorithm. After deciding optimal gain/phase margin specifications for the given process, the gains of PID controller using fitness value of immune algorithm depending on error between optimal gain/phase margin and the gain/phase margin obtained by tuning is tuned for the required response. To improve this suggested scheme, simulation results are compared with FNN based responses and illustrate more effectiveness.","PeriodicalId":283950,"journal":{"name":"Proceedings of the 2005 IEEE Midnight-Summer Workshop on Soft Computing in Industrial Applications, 2005. SMCia/05.","volume":"216 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113986066","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}
{"title":"Implementation of real time color gamut mapping using neural network","authors":"Hak-Sung Lee, Dongil Han","doi":"10.1109/SMCIA.2005.1466962","DOIUrl":"https://doi.org/10.1109/SMCIA.2005.1466962","url":null,"abstract":"A color gamut mapping is a process of mapping colors from the gamut of a source medium to fit the gamut of the reproduction medium. The input and output relationship of the color gamut mapping is highly nonlinear and there is a need to process the color gamut mapping in real-time. In this paper, a neural network is applied to the real time color gamut mapping. By the learning ability, the neural network is trained to effectively handle the high nonlinearity of the color gamut mapping. And also real time hardware architecture of neural network is presented in this paper. Simulation result shows the soundness of the proposed method.","PeriodicalId":283950,"journal":{"name":"Proceedings of the 2005 IEEE Midnight-Summer Workshop on Soft Computing in Industrial Applications, 2005. SMCia/05.","volume":"73 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126148430","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}
H. Elsayed, H. Amer, R. Daoud, D.W. Ramzy, M. Ghobrial
{"title":"Fire protection system for cargo trains using fuzzy logic","authors":"H. Elsayed, H. Amer, R. Daoud, D.W. Ramzy, M. Ghobrial","doi":"10.1109/SMCIA.2005.1466944","DOIUrl":"https://doi.org/10.1109/SMCIA.2005.1466944","url":null,"abstract":"This paper presents the design of a fire protection system for cargo trains in developing countries. The system is low cost and robust. It consists of three heat detectors and three smoke detectors whose outputs are connected to a microcontroller. The system produces three warning signals: Fire, Alarm and Cigarette. The system takes into account the presence or absence of wind. Also, the probability of false alerts is minimized because of the use of fuzzy logic in the design.","PeriodicalId":283950,"journal":{"name":"Proceedings of the 2005 IEEE Midnight-Summer Workshop on Soft Computing in Industrial Applications, 2005. SMCia/05.","volume":"111 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124177251","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}
{"title":"Tuning of PID controller for dead time process using immune based multiobjective","authors":"Dong Hwa Kim, Won-Pyo Hong","doi":"10.1109/SMCIA.2005.1466949","DOIUrl":"https://doi.org/10.1109/SMCIA.2005.1466949","url":null,"abstract":"In this paper auto-tuning scheme of PID controller based on the reference model has been studied by immune algorithm for a process. Up to this time, many sophisticated tuning algorithms have been tried in order to improve the PID controller performance under such difficult conditions. However, in the actual plant with dead time, they are manually tuned through a trial and error procedure, and the derivative action is switched off. Therefore, it is difficult to tune. Simulation results by immune based tuning reveal that tuning approaches suggested in this paper is an effective approach to search for optimal or near optimal process control with dead time.","PeriodicalId":283950,"journal":{"name":"Proceedings of the 2005 IEEE Midnight-Summer Workshop on Soft Computing in Industrial Applications, 2005. SMCia/05.","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133948581","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}