Pub Date : 2008-11-01DOI: 10.1109/ICSENST.2008.4757142
Jia Yu-hui, Wu Hong-xing, Kou Bao-quan, Li Li-yi
Control system of elevator door is a typical motor servo system, elevator door switch is the implementing agency. With the rapid development of the national economy, modern buildings is increasing, elevator is becoming an indispensable tool in daily life. Elevator normal operation is relation to personal safety, therefore, the elevator door not only demand the switch of action reliable and accurate, but also a rapid responsive and dynamic characteristics, and this put forward a higher requirements for the rotor and the position sensor. Magnetic encoder is compact, low-cost and high reliability, in this paper, permanent magnet synchronous motor is used as the implementation for the elevator door motor, magnetic encoder is used as rotor position detection, the principle of magnetic encoder is analyzed, the signal processing circuit of magnetic encoder and motor DSP interface control circuits are designed, and absolute position signal space vector control is used , the experimental result shows that the control system works well.
{"title":"Research on position sensor magnetic encoder based on the elevator door machine servo system","authors":"Jia Yu-hui, Wu Hong-xing, Kou Bao-quan, Li Li-yi","doi":"10.1109/ICSENST.2008.4757142","DOIUrl":"https://doi.org/10.1109/ICSENST.2008.4757142","url":null,"abstract":"Control system of elevator door is a typical motor servo system, elevator door switch is the implementing agency. With the rapid development of the national economy, modern buildings is increasing, elevator is becoming an indispensable tool in daily life. Elevator normal operation is relation to personal safety, therefore, the elevator door not only demand the switch of action reliable and accurate, but also a rapid responsive and dynamic characteristics, and this put forward a higher requirements for the rotor and the position sensor. Magnetic encoder is compact, low-cost and high reliability, in this paper, permanent magnet synchronous motor is used as the implementation for the elevator door motor, magnetic encoder is used as rotor position detection, the principle of magnetic encoder is analyzed, the signal processing circuit of magnetic encoder and motor DSP interface control circuits are designed, and absolute position signal space vector control is used , the experimental result shows that the control system works well.","PeriodicalId":6299,"journal":{"name":"2008 3rd International Conference on Sensing Technology","volume":"2023 1","pages":"431-434"},"PeriodicalIF":0.0,"publicationDate":"2008-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78216144","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 : 2008-11-01DOI: 10.1109/ICSENST.2008.4757066
Qiancheng Zhao, Longtao Lin, J. Cui, Dachuan Liu, X. Chi, G. Yan
This paper proposed an effective method to test some key parameters of the micro-machined gyroscope at low ambient pressure condition including quality factor, amplitude of the drive signal, bandwidth and scale factor. The results demonstrated that the best working pressure must confine some pressure range.
{"title":"The research on the performance of the micro-machined gyroscope at low ambient pressure","authors":"Qiancheng Zhao, Longtao Lin, J. Cui, Dachuan Liu, X. Chi, G. Yan","doi":"10.1109/ICSENST.2008.4757066","DOIUrl":"https://doi.org/10.1109/ICSENST.2008.4757066","url":null,"abstract":"This paper proposed an effective method to test some key parameters of the micro-machined gyroscope at low ambient pressure condition including quality factor, amplitude of the drive signal, bandwidth and scale factor. The results demonstrated that the best working pressure must confine some pressure range.","PeriodicalId":6299,"journal":{"name":"2008 3rd International Conference on Sensing Technology","volume":"95 1","pages":"21-24"},"PeriodicalIF":0.0,"publicationDate":"2008-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78329923","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 : 2008-11-01DOI: 10.1109/ICSENST.2008.4757149
O. P. Thakur, A.K. Singh
Electrostriction phenomena and mathematical modeling in respect of capacitive sensor filled with elastic dielectric material have been described. A comparative theoretical analysis of the traditional air gap capacitive sensor with the electrostriction based solid-state capacitive sensor has been carried out thoroughly. Difficulties and limitations with air gap capacitive sensor are highlighted. Solid-state capacitive sensor with elastic dielectric material sandwiched between the compliant electrodes exhibits higher mechanical and electrical stability, sensitivity, higher tolerance with environment and withstands large load in comparison to the air gap capacitive sensor. An experimental setup with proper solution has been described for the measurement of relative capacitance variation. An alternative method of current-mode bridge has also been suggested for the purpose of sensing pressure and strain with high accuracy.
{"title":"Modeling of capacitive sensor filled with elastic dielectrics and its advantages","authors":"O. P. Thakur, A.K. Singh","doi":"10.1109/ICSENST.2008.4757149","DOIUrl":"https://doi.org/10.1109/ICSENST.2008.4757149","url":null,"abstract":"Electrostriction phenomena and mathematical modeling in respect of capacitive sensor filled with elastic dielectric material have been described. A comparative theoretical analysis of the traditional air gap capacitive sensor with the electrostriction based solid-state capacitive sensor has been carried out thoroughly. Difficulties and limitations with air gap capacitive sensor are highlighted. Solid-state capacitive sensor with elastic dielectric material sandwiched between the compliant electrodes exhibits higher mechanical and electrical stability, sensitivity, higher tolerance with environment and withstands large load in comparison to the air gap capacitive sensor. An experimental setup with proper solution has been described for the measurement of relative capacitance variation. An alternative method of current-mode bridge has also been suggested for the purpose of sensing pressure and strain with high accuracy.","PeriodicalId":6299,"journal":{"name":"2008 3rd International Conference on Sensing Technology","volume":"8 1","pages":"467-471"},"PeriodicalIF":0.0,"publicationDate":"2008-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89775616","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 : 2008-11-01DOI: 10.1109/ICSENST.2008.4757168
Z. Gaofeng, Zhao Yulong, J. Zhuangde
The original structure of the flexibly thin film grid pressure sensor often suffers from the parasitic resistance of itself structure. In order to eliminate the parasitic resistance, the new ldquointerlayerrdquo structure of this sensor with good performance indexes was brought forward and given out after defects of original structure were analyzed and pointed out. The detecting principle and fabricating procedures of new structure were narrated minutely in this paper. The corresponding experiment was done, based on the test device. The experimenting results showed that the new ldquointerlayerrdquo structure with good performance indexes could measure out interface pressure distribution between touching objects and further eliminate the parasitic resistance.
{"title":"Parasitic resistance elimination for the flexibly thin film grid pressure sensor","authors":"Z. Gaofeng, Zhao Yulong, J. Zhuangde","doi":"10.1109/ICSENST.2008.4757168","DOIUrl":"https://doi.org/10.1109/ICSENST.2008.4757168","url":null,"abstract":"The original structure of the flexibly thin film grid pressure sensor often suffers from the parasitic resistance of itself structure. In order to eliminate the parasitic resistance, the new ldquointerlayerrdquo structure of this sensor with good performance indexes was brought forward and given out after defects of original structure were analyzed and pointed out. The detecting principle and fabricating procedures of new structure were narrated minutely in this paper. The corresponding experiment was done, based on the test device. The experimenting results showed that the new ldquointerlayerrdquo structure with good performance indexes could measure out interface pressure distribution between touching objects and further eliminate the parasitic resistance.","PeriodicalId":6299,"journal":{"name":"2008 3rd International Conference on Sensing Technology","volume":"89 1","pages":"557-562"},"PeriodicalIF":0.0,"publicationDate":"2008-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83871973","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 : 2008-11-01DOI: 10.1109/ICSENST.2008.4757109
T. Islam, F. A. Siddiqui, S.A. Khan, S. Islam, Harsh
Present work deals with the development of a low cost, appreciably accurate precision electronic circuit for resistive sensor where measurement of the incremental resistance with high degree of accuracy is essential. A linear and sensitive active bridge circuit requiring only few components for its hardware implementation has been proposed for measuring very small resistance change due to change in physical quantity or chemical analytes. Theory of the proposed active bridge circuit has been discussed and experimental results have been compared with conventional bridge circuit. Initial measurements are made with Pt-100 Strain gauge sensor but it can be extended to other resistive sensors of practical importance. Results show that the active bridge circuit is almost four times more sensitive than conventional full bridge circuit.
{"title":"A sensitive detection electronics for resistive sensor","authors":"T. Islam, F. A. Siddiqui, S.A. Khan, S. Islam, Harsh","doi":"10.1109/ICSENST.2008.4757109","DOIUrl":"https://doi.org/10.1109/ICSENST.2008.4757109","url":null,"abstract":"Present work deals with the development of a low cost, appreciably accurate precision electronic circuit for resistive sensor where measurement of the incremental resistance with high degree of accuracy is essential. A linear and sensitive active bridge circuit requiring only few components for its hardware implementation has been proposed for measuring very small resistance change due to change in physical quantity or chemical analytes. Theory of the proposed active bridge circuit has been discussed and experimental results have been compared with conventional bridge circuit. Initial measurements are made with Pt-100 Strain gauge sensor but it can be extended to other resistive sensors of practical importance. Results show that the active bridge circuit is almost four times more sensitive than conventional full bridge circuit.","PeriodicalId":6299,"journal":{"name":"2008 3rd International Conference on Sensing Technology","volume":"71 1","pages":"259-264"},"PeriodicalIF":0.0,"publicationDate":"2008-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82215097","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 : 2008-11-01DOI: 10.1109/ICSENST.2008.4757111
Huang Yu-ping, Wu Hong-xing, Kou Bao-quan, Li Li-yi
Permanent magnet synchronous motor (PMSM) is applied to aerospace missile steering gear as the structure of servo position with excellent performance of small volume, precision and reliability. For reducing error of actuator, it is important that initial position of actuator should keep consistent with rotorpsilas initial position because the dynamic key parameters of servo system are influenced by rotor position. Therefore, it is a key point that actuatorpsilas zero position and rotating encoder rotorpsilas should be coincident. In this paper, rotating encoder is applied to position sensor in missile steering gear servo system for testing rotor position, and the method of confirming initial position is advanced, then the method which keeps actuatorpsilas zero position and rotating encoder rotorpsilas being coincident is advanced. The better control effect is attained by combining space vector control strategy.
{"title":"Research on rotating encoder zero-position location based on missile steering gear","authors":"Huang Yu-ping, Wu Hong-xing, Kou Bao-quan, Li Li-yi","doi":"10.1109/ICSENST.2008.4757111","DOIUrl":"https://doi.org/10.1109/ICSENST.2008.4757111","url":null,"abstract":"Permanent magnet synchronous motor (PMSM) is applied to aerospace missile steering gear as the structure of servo position with excellent performance of small volume, precision and reliability. For reducing error of actuator, it is important that initial position of actuator should keep consistent with rotorpsilas initial position because the dynamic key parameters of servo system are influenced by rotor position. Therefore, it is a key point that actuatorpsilas zero position and rotating encoder rotorpsilas should be coincident. In this paper, rotating encoder is applied to position sensor in missile steering gear servo system for testing rotor position, and the method of confirming initial position is advanced, then the method which keeps actuatorpsilas zero position and rotating encoder rotorpsilas being coincident is advanced. The better control effect is attained by combining space vector control strategy.","PeriodicalId":6299,"journal":{"name":"2008 3rd International Conference on Sensing Technology","volume":"36 1","pages":"269-272"},"PeriodicalIF":0.0,"publicationDate":"2008-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82411443","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 : 2008-11-01DOI: 10.1109/ICSENST.2008.4757160
H. Rock, F. Koschmieder
Coriolis mass flow meters (CMFM) are directly measuring mass flow, by analyzing the induced oscillation of the measuring pipe. The accuracy is high and the sensitivity regarding other features of the flow to be measured like heat conductivity, heat capacity and viscosity is rather small. CMFM available at the marketplace often show changes in zero point and sensitivity during normal operation. The well known procedure for online determination of zero and sensitivity is very sensitive regarding the compensation forces to be calculated and deserves a cyclic state transition of the meter which is rather time consuming (about 2 to 3 seconds). The new approach using a phasor model of the meter together with an observer for the phasor variables is a major contribution to enhance the performance of the control system, as the cyclic stimuli applied to the meter are now interpreted as disturbances acting on the control loop. The phasor controller, mainly a nonlinear controller for phase and amplitude, is able to compensate the disturbances much faster than in the previous approach.
{"title":"A new method to detect zero drift and sensitivity of a Coriolis Mass Flow Meter (CMFM) by using phasor control","authors":"H. Rock, F. Koschmieder","doi":"10.1109/ICSENST.2008.4757160","DOIUrl":"https://doi.org/10.1109/ICSENST.2008.4757160","url":null,"abstract":"Coriolis mass flow meters (CMFM) are directly measuring mass flow, by analyzing the induced oscillation of the measuring pipe. The accuracy is high and the sensitivity regarding other features of the flow to be measured like heat conductivity, heat capacity and viscosity is rather small. CMFM available at the marketplace often show changes in zero point and sensitivity during normal operation. The well known procedure for online determination of zero and sensitivity is very sensitive regarding the compensation forces to be calculated and deserves a cyclic state transition of the meter which is rather time consuming (about 2 to 3 seconds). The new approach using a phasor model of the meter together with an observer for the phasor variables is a major contribution to enhance the performance of the control system, as the cyclic stimuli applied to the meter are now interpreted as disturbances acting on the control loop. The phasor controller, mainly a nonlinear controller for phase and amplitude, is able to compensate the disturbances much faster than in the previous approach.","PeriodicalId":6299,"journal":{"name":"2008 3rd International Conference on Sensing Technology","volume":"6 1","pages":"518-522"},"PeriodicalIF":0.0,"publicationDate":"2008-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82815284","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 : 2008-11-01DOI: 10.1109/ICSENST.2008.4757165
N. Gokhale, M. Parmar, K. Rajanna, M. Nayak
We report here, the study carried out on piezoelectric thin film for MEMS/Microsensor applications. The study includes characterization of sputtered thin film using indirect methods and comparison of behavior using cantilever technique for the confirmation of piezoelectric property. A suitable experimental setup was designed and fabricated for subjecting the cantilever to vibrate. The data was recorded for piezoelectric thin films deposited with different compositions. It is clearly evident that the direct method is inexpensive and easier for determining the quality of the deposited piezoelectric thin film.
{"title":"Piezoelectric zinc oxide thin film for MEMS application: A comparative study","authors":"N. Gokhale, M. Parmar, K. Rajanna, M. Nayak","doi":"10.1109/ICSENST.2008.4757165","DOIUrl":"https://doi.org/10.1109/ICSENST.2008.4757165","url":null,"abstract":"We report here, the study carried out on piezoelectric thin film for MEMS/Microsensor applications. The study includes characterization of sputtered thin film using indirect methods and comparison of behavior using cantilever technique for the confirmation of piezoelectric property. A suitable experimental setup was designed and fabricated for subjecting the cantilever to vibrate. The data was recorded for piezoelectric thin films deposited with different compositions. It is clearly evident that the direct method is inexpensive and easier for determining the quality of the deposited piezoelectric thin film.","PeriodicalId":6299,"journal":{"name":"2008 3rd International Conference on Sensing Technology","volume":"8 1","pages":"543-546"},"PeriodicalIF":0.0,"publicationDate":"2008-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89658706","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 : 2008-11-01DOI: 10.1109/ICSENST.2008.4757175
T. Azuma, H. Kato, S. Adachi
In this paper, an method to system identification over networks using 1 bit delta-sigma transformation is proposed and the efficacy of the proposed method is verified based on experimental results. Accurate mathematical models are needed to achieve intelligent control with good performances in control engineering. It is easy to obtain those mathematical models if exact input-output data of a controlled object is available by applying system identification techniques. However it is difficult to obtain the exact input-output data over networks because the data is transformed from analog data into digital data. The proposed method provides a method to build mathematical models of controlled objects over networks.
{"title":"An experimental result on system identification over networks using delta-sigma transformation","authors":"T. Azuma, H. Kato, S. Adachi","doi":"10.1109/ICSENST.2008.4757175","DOIUrl":"https://doi.org/10.1109/ICSENST.2008.4757175","url":null,"abstract":"In this paper, an method to system identification over networks using 1 bit delta-sigma transformation is proposed and the efficacy of the proposed method is verified based on experimental results. Accurate mathematical models are needed to achieve intelligent control with good performances in control engineering. It is easy to obtain those mathematical models if exact input-output data of a controlled object is available by applying system identification techniques. However it is difficult to obtain the exact input-output data over networks because the data is transformed from analog data into digital data. The proposed method provides a method to build mathematical models of controlled objects over networks.","PeriodicalId":6299,"journal":{"name":"2008 3rd International Conference on Sensing Technology","volume":"98 1","pages":"595-599"},"PeriodicalIF":0.0,"publicationDate":"2008-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91085941","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 : 2008-11-01DOI: 10.1109/ICSENST.2008.4757073
A. Jongenelen, D. Carnegie, A. Dorrington, A. Payne
A versatile full-field range imaging system has previously been constructed. This system is configurable in software to produce either high precision or fast acquisition range images. Indicatively a 10 second exposure has been shown to produce a range image of sub-millimeter precision, whilst video frame rate (30 fps) acquisition provides for centimetre precision. Currently the acquisition time of the system is to a large degree constrained by the off-line processing of the frames by an external computer. This paper presents an alternative to the off-line PC image processing utilising an Altera Stratix II FPGA. Processing rates up to 30 frames per second have been achieved with the added advantage that many of the previous systempsilas existing digital electronics can also be accommodated, providing for an even more compact and flexible system.
一个多功能的全视场成像系统已经被构建。该系统可在软件中进行配置，以产生高精度或快速采集范围的图像。具有指示性的是，10秒曝光已显示出产生亚毫米精度的范围图像，而视频帧率(30 fps)采集提供厘米精度。目前，系统的采集时间在很大程度上受到外部计算机对帧的离线处理的限制。本文提出了一种利用Altera Stratix II FPGA替代离线PC图像处理的方法。处理速率高达每秒30帧已经实现与许多以前的系统和现有的数字电子设备也可以容纳的附加优势，提供一个更加紧凑和灵活的系统。
{"title":"Heterodyne range imaging in real-time","authors":"A. Jongenelen, D. Carnegie, A. Dorrington, A. Payne","doi":"10.1109/ICSENST.2008.4757073","DOIUrl":"https://doi.org/10.1109/ICSENST.2008.4757073","url":null,"abstract":"A versatile full-field range imaging system has previously been constructed. This system is configurable in software to produce either high precision or fast acquisition range images. Indicatively a 10 second exposure has been shown to produce a range image of sub-millimeter precision, whilst video frame rate (30 fps) acquisition provides for centimetre precision. Currently the acquisition time of the system is to a large degree constrained by the off-line processing of the frames by an external computer. This paper presents an alternative to the off-line PC image processing utilising an Altera Stratix II FPGA. Processing rates up to 30 frames per second have been achieved with the added advantage that many of the previous systempsilas existing digital electronics can also be accommodated, providing for an even more compact and flexible system.","PeriodicalId":6299,"journal":{"name":"2008 3rd International Conference on Sensing Technology","volume":"12 1","pages":"57-62"},"PeriodicalIF":0.0,"publicationDate":"2008-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75428870","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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