Pub Date : 2011-09-01DOI: 10.1109/NATPC.2011.6136453
V. Dabral, S. Kapoor, L. M. Tiwari, S. Agrawal
In this manuscript an attempt has been taken to solve the thermistor problem by using B-Spline FEM numerical technique. Here two different basis function has been adopted for the solution. The thermistor is a thermally sensitive resistor whose electrical conductivity changes drastically by orders of magnitude as the temperature reaches a certain value. Basis of its working is an electrical conductivity that is highly nonlinear function of temperature. The current flowing through the device drives internal Joule heating. The objective is to introduce the fifth order B-Spline Basis function to solve. There is some techniques are already exists in literature few terminology are adopted directly. The solution is obtained for the cold phase and warm phase separately for both the Basis function then a comparison table is made for the obtained solution. The solution of a PTC problem. Numerical results are found to be in good agreement with the exact solution available. paper. The comparison is also made with existing result which is also have a great achievement of study.
{"title":"B-spline finite element solution for the current flow through thermistor","authors":"V. Dabral, S. Kapoor, L. M. Tiwari, S. Agrawal","doi":"10.1109/NATPC.2011.6136453","DOIUrl":"https://doi.org/10.1109/NATPC.2011.6136453","url":null,"abstract":"In this manuscript an attempt has been taken to solve the thermistor problem by using B-Spline FEM numerical technique. Here two different basis function has been adopted for the solution. The thermistor is a thermally sensitive resistor whose electrical conductivity changes drastically by orders of magnitude as the temperature reaches a certain value. Basis of its working is an electrical conductivity that is highly nonlinear function of temperature. The current flowing through the device drives internal Joule heating. The objective is to introduce the fifth order B-Spline Basis function to solve. There is some techniques are already exists in literature few terminology are adopted directly. The solution is obtained for the cold phase and warm phase separately for both the Basis function then a comparison table is made for the obtained solution. The solution of a PTC problem. Numerical results are found to be in good agreement with the exact solution available. paper. The comparison is also made with existing result which is also have a great achievement of study.","PeriodicalId":6411,"journal":{"name":"2011 National Postgraduate Conference","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74896878","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 : 2011-09-01DOI: 10.1109/NATPC.2011.6136270
S. Noordin, W. Ahmad
There are various tools used in today's learning and teaching process. One of the tools which are widely used in Malaysian educational system since the implementation of Teaching Science and Mathematics in English (PPSMI) is the multimedia courseware. Based on the survey done with a group of form four and form five students regarding Lines and Planes in 3-Dimensions topic, the responses from the students were very positive towards the idea for this courseware and they had suggested the future courseware to include games as the module of learning.
{"title":"Using game as part of the knowledge transfer module in a multimedia courseware: Lines and planes in 3-Dimensions","authors":"S. Noordin, W. Ahmad","doi":"10.1109/NATPC.2011.6136270","DOIUrl":"https://doi.org/10.1109/NATPC.2011.6136270","url":null,"abstract":"There are various tools used in today's learning and teaching process. One of the tools which are widely used in Malaysian educational system since the implementation of Teaching Science and Mathematics in English (PPSMI) is the multimedia courseware. Based on the survey done with a group of form four and form five students regarding Lines and Planes in 3-Dimensions topic, the responses from the students were very positive towards the idea for this courseware and they had suggested the future courseware to include games as the module of learning.","PeriodicalId":6411,"journal":{"name":"2011 National Postgraduate Conference","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80137016","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 : 2011-09-01DOI: 10.1109/NATPC.2011.6136385
Agus Arif, V. Asirvadam, M. N. Karsiti
Forward modeling is an important step in processing data of seabed logging (SBL) with controlled source electromagnetic (CSEM) method to determine the location and dimension of a hydrocarbon layer under the seafloor. In this research, forward modeling was conducted using a radial basis function (RBF) network, which is an important type of artificial neural networks. To train this RBF network, a data set was generated using a simulation software: COMSOL Multiphysics. The network designed has 3 layers with 3 neurons in the input layer and 1 neuron in the output layer. The single hidden layer contained neurons whose number had been varied between 1 and 20 neurons. The performance comparison showed that the RBF network with 10 neurons in its hidden layer was the best to model SBL with CSEM method.
{"title":"Forward modeling of seabed logging with controlled source electromagnetic method using radial basis function networks","authors":"Agus Arif, V. Asirvadam, M. N. Karsiti","doi":"10.1109/NATPC.2011.6136385","DOIUrl":"https://doi.org/10.1109/NATPC.2011.6136385","url":null,"abstract":"Forward modeling is an important step in processing data of seabed logging (SBL) with controlled source electromagnetic (CSEM) method to determine the location and dimension of a hydrocarbon layer under the seafloor. In this research, forward modeling was conducted using a radial basis function (RBF) network, which is an important type of artificial neural networks. To train this RBF network, a data set was generated using a simulation software: COMSOL Multiphysics. The network designed has 3 layers with 3 neurons in the input layer and 1 neuron in the output layer. The single hidden layer contained neurons whose number had been varied between 1 and 20 neurons. The performance comparison showed that the RBF network with 10 neurons in its hidden layer was the best to model SBL with CSEM method.","PeriodicalId":6411,"journal":{"name":"2011 National Postgraduate Conference","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81424791","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 : 2011-09-01DOI: 10.1109/NATPC.2011.6136250
N. N. Amran, A. Shariff, K. K. Lau
Natural gas dehydration is one of the crucial upstream operation processes to protect the gas transportation pipeline and fulfill the sale gas specification. The most commonly used technology for the gas dehydration is glycol absorption. Even though the glycol absorption is effective for practical dehydration application, but it still have various drawbacks related to its operation, environmental effect (due to chemical carry-over), large footprint, and frequent monitoring and maintenance. Physical adsorption with zeolite material has been identified as a potential alternative for dehydration technology. Based on the preliminary screening work, zeolite 3A and 4A have been identified for further performance evaluation due to its potential for practical dehydration application. The performance is based on dehydration capacity of these adsorbents which was evaluated through nitrogen physical adsorption and equilibrium adsorption using Magnetic Suspension Balance (MSB). The results showed that physical adsorption potentially gives better or at par separation efficiency as compared to absorption dehydration process and greener technology approach.
{"title":"Nitrogen physical adsorption and adsorption equilibrium for natural gas dehydration on zeolite 3A and 4A","authors":"N. N. Amran, A. Shariff, K. K. Lau","doi":"10.1109/NATPC.2011.6136250","DOIUrl":"https://doi.org/10.1109/NATPC.2011.6136250","url":null,"abstract":"Natural gas dehydration is one of the crucial upstream operation processes to protect the gas transportation pipeline and fulfill the sale gas specification. The most commonly used technology for the gas dehydration is glycol absorption. Even though the glycol absorption is effective for practical dehydration application, but it still have various drawbacks related to its operation, environmental effect (due to chemical carry-over), large footprint, and frequent monitoring and maintenance. Physical adsorption with zeolite material has been identified as a potential alternative for dehydration technology. Based on the preliminary screening work, zeolite 3A and 4A have been identified for further performance evaluation due to its potential for practical dehydration application. The performance is based on dehydration capacity of these adsorbents which was evaluated through nitrogen physical adsorption and equilibrium adsorption using Magnetic Suspension Balance (MSB). The results showed that physical adsorption potentially gives better or at par separation efficiency as compared to absorption dehydration process and greener technology approach.","PeriodicalId":6411,"journal":{"name":"2011 National Postgraduate Conference","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81905238","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 : 2011-09-01DOI: 10.1109/NATPC.2011.6136379
N. Yaakub, M. Napiah
Public transportation system in Malaysia is way below the standard of other developed countries; take Klang Valley for example, the modal share of public transport users in 2010 is only 17% compared to around 60% in Singapore and 89% in Hong Kong. If the public transport is optimally utilized, the users will realize that the service is cheaper, safer, faster, and generally better than driving personal cars. This paper is an extract from a case study research on assessing the reliability of public bus performance in Kota Bharu, Kelantan where on board surveys are conducted to evaluate the passengers' demographics and travel characteristics. The return rate for the survey is 24% (180 respondents). The results confirmed that the passengers of city bus in Kota Bharu are not satisfied with the service provided, mainly due to lack of punctuality (60.5%) and low in frequency (67.7%). The findings will help improve the public bus quality of service in Kota Bharu, so that it will achieve desired standard.
{"title":"Public bus passenger demographic and travel characteristics a study of public bus passenger profile in Kota Bharu, Kelantan","authors":"N. Yaakub, M. Napiah","doi":"10.1109/NATPC.2011.6136379","DOIUrl":"https://doi.org/10.1109/NATPC.2011.6136379","url":null,"abstract":"Public transportation system in Malaysia is way below the standard of other developed countries; take Klang Valley for example, the modal share of public transport users in 2010 is only 17% compared to around 60% in Singapore and 89% in Hong Kong. If the public transport is optimally utilized, the users will realize that the service is cheaper, safer, faster, and generally better than driving personal cars. This paper is an extract from a case study research on assessing the reliability of public bus performance in Kota Bharu, Kelantan where on board surveys are conducted to evaluate the passengers' demographics and travel characteristics. The return rate for the survey is 24% (180 respondents). The results confirmed that the passengers of city bus in Kota Bharu are not satisfied with the service provided, mainly due to lack of punctuality (60.5%) and low in frequency (67.7%). The findings will help improve the public bus quality of service in Kota Bharu, so that it will achieve desired standard.","PeriodicalId":6411,"journal":{"name":"2011 National Postgraduate Conference","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84221222","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 : 2011-09-01DOI: 10.1109/NATPC.2011.6136400
Nassir D. Mokhlif, H. Al-Kayiem, M. Baharom
A mathematical model of a steady heat transfer and crystallization was established in double pipe scraped surface heat exchangers and chillers for solvent dewaxing process. The model equations were numerically solved to obtain, the temperatures distribution, wax volume fraction, crystals number and their size in the wax-oil-solvent solution. The prediction of the physical properties and the nucleation and crystal growth constants based on the adjustable selection of the higher carbon number as a solute and light ones as liquid. The procedure depends on experimental measurements of the carbon number distribution in the feedstock, dissolved temperature, onset crystallization temperature, and the wax content. The measurement results were linked to a solubility model, which attaches the wax content and the dissolving temperature of the feed stock to choose the wax compound. The numerical model results showed that the proposed solubility model give a good estimation of the wax crystals characteristics of such complex process.
{"title":"Modeling of wax crystallization in production of lube oil base stock in solvent dewaxing","authors":"Nassir D. Mokhlif, H. Al-Kayiem, M. Baharom","doi":"10.1109/NATPC.2011.6136400","DOIUrl":"https://doi.org/10.1109/NATPC.2011.6136400","url":null,"abstract":"A mathematical model of a steady heat transfer and crystallization was established in double pipe scraped surface heat exchangers and chillers for solvent dewaxing process. The model equations were numerically solved to obtain, the temperatures distribution, wax volume fraction, crystals number and their size in the wax-oil-solvent solution. The prediction of the physical properties and the nucleation and crystal growth constants based on the adjustable selection of the higher carbon number as a solute and light ones as liquid. The procedure depends on experimental measurements of the carbon number distribution in the feedstock, dissolved temperature, onset crystallization temperature, and the wax content. The measurement results were linked to a solubility model, which attaches the wax content and the dissolving temperature of the feed stock to choose the wax compound. The numerical model results showed that the proposed solubility model give a good estimation of the wax crystals characteristics of such complex process.","PeriodicalId":6411,"journal":{"name":"2011 National Postgraduate Conference","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78263052","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 : 2011-09-01DOI: 10.1109/NATPC.2011.6136384
A. F. Malik, Z. A. Burhanudin, V. Jeoti
The focus of this paper is to explore a most suitable piezoelectric material for a surface acoustic wave (SAW) sensor to monitor corrosion for curved and complex surfaces at elevated temperatures. A comparison between piezocrystal Quartz and piezopolymers PVDF and Polyimide is made on the basis of simulation. It is found that Piezoelectric Polyimide is a promising material that fulfils our requirements. Finally a flexible Polyimide based surface acoustic wave (SAW) delay line is proposed to detect and monitor corrosion. It consists of a pair of Interdigital Transducers (IDTs) and an intermediate metal sensing element. Generation and detection of SAW on Polyimide piezoelectric substrate are obtained through input and output IDTs made of highly corrosive resistant material i.e. platinum (Pt). The SAW is propagated between the IDTs and underneath a sensing element made of iron (Fe). The device parameters like central frequency, SAW wavelength, number of finger pairs and others are designed using impulse response model. The theoretical phase shift as a function of sensing element's thinness is calculated using mathematical equations and then compared to the phase shift obtained using coupling-of-mode (COM) Model. It is found that thinner the sensing element, the higher the phase shift, especially when thinness of sensing element is at nm scale. It is also noticed that at central frequency greater than 400 MHz, the phase shift is quite high and easily measureable. Since corrosion can be considered as thinning of a metallic element, the results suggest that it is feasible to develop a flexible Polyimide SAW based sensor for corrosion detection.
{"title":"A flexible Polyimide based SAW delay line for corrosion detection","authors":"A. F. Malik, Z. A. Burhanudin, V. Jeoti","doi":"10.1109/NATPC.2011.6136384","DOIUrl":"https://doi.org/10.1109/NATPC.2011.6136384","url":null,"abstract":"The focus of this paper is to explore a most suitable piezoelectric material for a surface acoustic wave (SAW) sensor to monitor corrosion for curved and complex surfaces at elevated temperatures. A comparison between piezocrystal Quartz and piezopolymers PVDF and Polyimide is made on the basis of simulation. It is found that Piezoelectric Polyimide is a promising material that fulfils our requirements. Finally a flexible Polyimide based surface acoustic wave (SAW) delay line is proposed to detect and monitor corrosion. It consists of a pair of Interdigital Transducers (IDTs) and an intermediate metal sensing element. Generation and detection of SAW on Polyimide piezoelectric substrate are obtained through input and output IDTs made of highly corrosive resistant material i.e. platinum (Pt). The SAW is propagated between the IDTs and underneath a sensing element made of iron (Fe). The device parameters like central frequency, SAW wavelength, number of finger pairs and others are designed using impulse response model. The theoretical phase shift as a function of sensing element's thinness is calculated using mathematical equations and then compared to the phase shift obtained using coupling-of-mode (COM) Model. It is found that thinner the sensing element, the higher the phase shift, especially when thinness of sensing element is at nm scale. It is also noticed that at central frequency greater than 400 MHz, the phase shift is quite high and easily measureable. Since corrosion can be considered as thinning of a metallic element, the results suggest that it is feasible to develop a flexible Polyimide SAW based sensor for corrosion detection.","PeriodicalId":6411,"journal":{"name":"2011 National Postgraduate Conference","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72798097","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 : 2011-09-01DOI: 10.1109/NATPC.2011.6136318
M. R. Tamjis, S. Yaacob, Paulraj Pandian, A. N. Abdullah, R. B. W. Heng
Education is one of the most important aspects in human life. Nowadays, a quality education not only rely on the teaching itself, but also the environment. One of the important aspects in providing an educative environment is the acoustic quality of the teaching facilities. In this paper, a signal processing based classroom speech intelligibility prediction will be discussed. There are four main stages involved in this research, which were measurement, preprocessing, feature extraction and classification. Two types of audio features were used in this research and the classification results were compared. It was concluded that Elman classifiers trained with zero-crossing rate features tend to produce better classification accuracy compared to the spectral roll off.
{"title":"Feature based classification for classroom speech intelligibility prediction","authors":"M. R. Tamjis, S. Yaacob, Paulraj Pandian, A. N. Abdullah, R. B. W. Heng","doi":"10.1109/NATPC.2011.6136318","DOIUrl":"https://doi.org/10.1109/NATPC.2011.6136318","url":null,"abstract":"Education is one of the most important aspects in human life. Nowadays, a quality education not only rely on the teaching itself, but also the environment. One of the important aspects in providing an educative environment is the acoustic quality of the teaching facilities. In this paper, a signal processing based classroom speech intelligibility prediction will be discussed. There are four main stages involved in this research, which were measurement, preprocessing, feature extraction and classification. Two types of audio features were used in this research and the classification results were compared. It was concluded that Elman classifiers trained with zero-crossing rate features tend to produce better classification accuracy compared to the spectral roll off.","PeriodicalId":6411,"journal":{"name":"2011 National Postgraduate Conference","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86125908","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 : 2011-09-01DOI: 10.1109/NATPC.2011.6136308
Fazal-e-Malik, B. Baharudin
A quick and accurate algorithm for content-based image retrieval (CBIR) is proposed in this paper. The retrieval of the similar images using proposed algorithm from the database is based on the statistical texture features. The basic idea is to convert the RGB color image into grayscale image to reduce the computation speed and increase efficiency. The grayscale image is divided into blocks of different sizes. The statistical texture features are extracted by using the probability distribution of intensity levels in all blocks. In the experiment, the efficiency of feature extraction and accuracy of the image retrieval are measured for different block size methods using the proposed algorithm. The Corel database was used for testing. As a result the proposed CBIR algorithm provided higher performance in terms of efficiency and accuracy.
{"title":"Efficient image retrieval based on texture features","authors":"Fazal-e-Malik, B. Baharudin","doi":"10.1109/NATPC.2011.6136308","DOIUrl":"https://doi.org/10.1109/NATPC.2011.6136308","url":null,"abstract":"A quick and accurate algorithm for content-based image retrieval (CBIR) is proposed in this paper. The retrieval of the similar images using proposed algorithm from the database is based on the statistical texture features. The basic idea is to convert the RGB color image into grayscale image to reduce the computation speed and increase efficiency. The grayscale image is divided into blocks of different sizes. The statistical texture features are extracted by using the probability distribution of intensity levels in all blocks. In the experiment, the efficiency of feature extraction and accuracy of the image retrieval are measured for different block size methods using the proposed algorithm. The Corel database was used for testing. As a result the proposed CBIR algorithm provided higher performance in terms of efficiency and accuracy.","PeriodicalId":6411,"journal":{"name":"2011 National Postgraduate Conference","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86456258","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 : 2011-09-01DOI: 10.1109/NATPC.2011.6136435
F. Ahmad, M. Khir, N. H. Hamid, J. Dennis
This paper investigates the electrostatic drive, sense, spring behavior of long beams, resonant frequency, quality factor, resonator noise and damping of resonator parallel to the substrate, using an interdigitated capacitor (electrostatic comb). Resonant frequency of the device is 9.5 kHz with quality factor 104. Couette damping is dominant that is equal to 5.34×10•8. The value of Squeeze film damping is small i.e. 2.436×10•13 due to end faces of the fingers of comb resonator. Dominant noise is Brownian and spectral density of this noise force due to Couette and Squeeze film damping are 8.843×10•28 and 4.035×10•33 N2/Hz respectively. At damping ratio 0.0048 electrostatic force of 29.5 nN produces 11.4µm amplitude at resonance in the sensing fingers which shows capacitive sensitivity equals to 0.3684 fF/µm.
{"title":"Theoretical analysis of resonant lateral electrostatic Comb drive actuator and sensor","authors":"F. Ahmad, M. Khir, N. H. Hamid, J. Dennis","doi":"10.1109/NATPC.2011.6136435","DOIUrl":"https://doi.org/10.1109/NATPC.2011.6136435","url":null,"abstract":"This paper investigates the electrostatic drive, sense, spring behavior of long beams, resonant frequency, quality factor, resonator noise and damping of resonator parallel to the substrate, using an interdigitated capacitor (electrostatic comb). Resonant frequency of the device is 9.5 kHz with quality factor 104. Couette damping is dominant that is equal to 5.34×10<sup>•8</sup>. The value of Squeeze film damping is small i.e. 2.436×10<sup>•13</sup> due to end faces of the fingers of comb resonator. Dominant noise is Brownian and spectral density of this noise force due to Couette and Squeeze film damping are 8.843×10<sup>•28</sup> and 4.035×10<sup>•33</sup> N<sup>2</sup>/Hz respectively. At damping ratio 0.0048 electrostatic force of 29.5 nN produces 11.4µm amplitude at resonance in the sensing fingers which shows capacitive sensitivity equals to 0.3684 fF/µm.","PeriodicalId":6411,"journal":{"name":"2011 National Postgraduate Conference","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86188817","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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