A turntable servo system based on the Lugre friction model is established in order to overcome the nonlinear friction's effect to stability of control system in low speed situation, and an active disturbance rejection controller is designed to estimate and compensate the friction. Only using linear extended observer and linear state error feedback can the designed controller achieve the prospective performance as the classical active disturbance rejection control does. Finally a simulation was used to compare linear active disturbance rejection control with PD, the experiments show that after introducing the active disturbance rejection controller system has the better control performance, higher response speed, higher reliable precision as well as the anti-disturbance.
{"title":"Research of Linear Active Disturbance Rejection Control in the Turntable Servo System","authors":"Shan Dongsheng, Li Chao, Z. Peiqiang, Wei Wei","doi":"10.1109/IHMSC.2012.30","DOIUrl":"https://doi.org/10.1109/IHMSC.2012.30","url":null,"abstract":"A turntable servo system based on the Lugre friction model is established in order to overcome the nonlinear friction's effect to stability of control system in low speed situation, and an active disturbance rejection controller is designed to estimate and compensate the friction. Only using linear extended observer and linear state error feedback can the designed controller achieve the prospective performance as the classical active disturbance rejection control does. Finally a simulation was used to compare linear active disturbance rejection control with PD, the experiments show that after introducing the active disturbance rejection controller system has the better control performance, higher response speed, higher reliable precision as well as the anti-disturbance.","PeriodicalId":431532,"journal":{"name":"2012 4th International Conference on Intelligent Human-Machine Systems and Cybernetics","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121274434","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}
In recent years, one-class support vector machines (OCSVMs) have received increasing attention, which are one of the methods to solve one-class classification problems. Among all the kernels available to OCSVMs, Gaussian kernel is the most commonly used one with a single parameter S to tune, which influences classifier performance significantly. This paper proposes a novel heuristic approach to choosing this parameter via tightness detecting, that is designed to detect whether the decision boundaries are satisfactory. The approach tunes the parameter to ensure that the decision boundaries have an appropriate tightness, only according to the geometric distribution of positive samples. Experimental results on different datasets show that the proposed approach has a better performance than previous methods.
{"title":"An Approach to Choosing Gaussian Kernel Parameter for One-Class SVMs via Tightness Detecting","authors":"Huangang Wang, Lin Zhang, Yingchao Xiao, Wenli Xu","doi":"10.1109/IHMSC.2012.172","DOIUrl":"https://doi.org/10.1109/IHMSC.2012.172","url":null,"abstract":"In recent years, one-class support vector machines (OCSVMs) have received increasing attention, which are one of the methods to solve one-class classification problems. Among all the kernels available to OCSVMs, Gaussian kernel is the most commonly used one with a single parameter S to tune, which influences classifier performance significantly. This paper proposes a novel heuristic approach to choosing this parameter via tightness detecting, that is designed to detect whether the decision boundaries are satisfactory. The approach tunes the parameter to ensure that the decision boundaries have an appropriate tightness, only according to the geometric distribution of positive samples. Experimental results on different datasets show that the proposed approach has a better performance than previous methods.","PeriodicalId":431532,"journal":{"name":"2012 4th International Conference on Intelligent Human-Machine Systems and Cybernetics","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117180762","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 studies the centralized soccer robot vision subsystem, first it introduces the work process of vision subsystem, second it puts forward research method on goal search algorithm, and designs new methods of the dynamic window and color index table combination, the methods solve weaknesses that the target is searched slowly and lost easily, and improve the system robustness.
{"title":"Target Search Algorithms Based on the Dynamic Window and Color Index Table Combination","authors":"Li-Hua Wang, Wan-Ming Liu, W. Tian","doi":"10.1109/IHMSC.2012.64","DOIUrl":"https://doi.org/10.1109/IHMSC.2012.64","url":null,"abstract":"This paper studies the centralized soccer robot vision subsystem, first it introduces the work process of vision subsystem, second it puts forward research method on goal search algorithm, and designs new methods of the dynamic window and color index table combination, the methods solve weaknesses that the target is searched slowly and lost easily, and improve the system robustness.","PeriodicalId":431532,"journal":{"name":"2012 4th International Conference on Intelligent Human-Machine Systems and Cybernetics","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116838036","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 Concepts of connectedness and s-connectedness in L-closure spaces are introduced in this paper. Some properties are discussed and we generalize relative results of s-connectedness in L-fuzzy topological molecular lattices.
{"title":"Connectedness and S-Connectedness in L-Closure Spaces","authors":"Yuhui Liu, Guoqiang Yuan","doi":"10.1109/IHMSC.2012.115","DOIUrl":"https://doi.org/10.1109/IHMSC.2012.115","url":null,"abstract":"The Concepts of connectedness and s-connectedness in L-closure spaces are introduced in this paper. Some properties are discussed and we generalize relative results of s-connectedness in L-fuzzy topological molecular lattices.","PeriodicalId":431532,"journal":{"name":"2012 4th International Conference on Intelligent Human-Machine Systems and Cybernetics","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121566789","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 describes a reading quality scoring system based on large vocabulary continuous speech recognition (LVCSR). Our previous scoring system was based on forced alignment. A disadvantage of forced alignment based system is it can hardly catch huge kinds of reading miscues, while LVCSR based system avoids this disadvantage. The most challenge was that the LVCSR recognition rate was low on our corpus. To improve the recognition rate, we optimized our LVCSR engine for passage scoring tasks by presenting a novel dynamic language model (LM) constructing algorithm. The optimized LVCSR's recognition rate on test speech data was 70.2%, while the recognition rate of the original LVCSR on the same database was 37.9%. Our scoring method was to align the text reference and the confusion network generated from the LVCSR decoding result. The LVCSR based system reduced the scoring error rate of the baseline system by 14.5% relatively.
{"title":"An LVCSR Based Automatic Scoring Method in English Reading Tests","authors":"Junbo Zhang, Fuping Pan, Yonghong Yan","doi":"10.1109/IHMSC.2012.14","DOIUrl":"https://doi.org/10.1109/IHMSC.2012.14","url":null,"abstract":"This paper describes a reading quality scoring system based on large vocabulary continuous speech recognition (LVCSR). Our previous scoring system was based on forced alignment. A disadvantage of forced alignment based system is it can hardly catch huge kinds of reading miscues, while LVCSR based system avoids this disadvantage. The most challenge was that the LVCSR recognition rate was low on our corpus. To improve the recognition rate, we optimized our LVCSR engine for passage scoring tasks by presenting a novel dynamic language model (LM) constructing algorithm. The optimized LVCSR's recognition rate on test speech data was 70.2%, while the recognition rate of the original LVCSR on the same database was 37.9%. Our scoring method was to align the text reference and the confusion network generated from the LVCSR decoding result. The LVCSR based system reduced the scoring error rate of the baseline system by 14.5% relatively.","PeriodicalId":431532,"journal":{"name":"2012 4th International Conference on Intelligent Human-Machine Systems and Cybernetics","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129786286","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}
Shuai Chen, Cuiling Ding, Yu Han, Y. Fang, Yanbing Chen
In this paper, a low-cost micro attitude and heading measurement system using MEMS inertial sensors is researched. To overcome shortcomings such as low precision and easy divergence, a new Kalman filter algorithm based on additive quaternion is designed. The state equation is established which taking attitude quaternion error and gyro drift as state variables. The measurement equation is constructed taking the attitude quaternion among accelerometers, magnetometers and gyroscopes. The stimulation indicates that the output of the AHRS is stable and within reasonable accuracy. Thus, the particular Kalman filter based on the additive quaternion error model is a practical method for improving the attitude and heading angles estimates.
{"title":"Study on Information Fusion Algorithm for the Miniature AHRS","authors":"Shuai Chen, Cuiling Ding, Yu Han, Y. Fang, Yanbing Chen","doi":"10.1109/IHMSC.2012.34","DOIUrl":"https://doi.org/10.1109/IHMSC.2012.34","url":null,"abstract":"In this paper, a low-cost micro attitude and heading measurement system using MEMS inertial sensors is researched. To overcome shortcomings such as low precision and easy divergence, a new Kalman filter algorithm based on additive quaternion is designed. The state equation is established which taking attitude quaternion error and gyro drift as state variables. The measurement equation is constructed taking the attitude quaternion among accelerometers, magnetometers and gyroscopes. The stimulation indicates that the output of the AHRS is stable and within reasonable accuracy. Thus, the particular Kalman filter based on the additive quaternion error model is a practical method for improving the attitude and heading angles estimates.","PeriodicalId":431532,"journal":{"name":"2012 4th International Conference on Intelligent Human-Machine Systems and Cybernetics","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130900948","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 describers the history and trends of application about TPMS, mainly introduces the basic principles of transmitter based TPMS, the structure of the system, as well as the main features of components. To solve the problem of reducing the power of the direct-type TPMS system from the engineering Application Perspective, It focuses on software processes of achieving low power consumption and the detailed steps of the detection process. In addition, test circuit is given and the software processes successfully applies to it.
{"title":"Research and Implementation of Low-power TPMS","authors":"Xi Liu, Zhong Xiao, Jian Cheng","doi":"10.1109/IHMSC.2012.49","DOIUrl":"https://doi.org/10.1109/IHMSC.2012.49","url":null,"abstract":"This paper describers the history and trends of application about TPMS, mainly introduces the basic principles of transmitter based TPMS, the structure of the system, as well as the main features of components. To solve the problem of reducing the power of the direct-type TPMS system from the engineering Application Perspective, It focuses on software processes of achieving low power consumption and the detailed steps of the detection process. In addition, test circuit is given and the software processes successfully applies to it.","PeriodicalId":431532,"journal":{"name":"2012 4th International Conference on Intelligent Human-Machine Systems and Cybernetics","volume":"3 3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131166436","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}
In order to recovery geostationary orbit environment, a Space Tether-Net system, which is used to capture and remove the retired or malfunction satellites to graveyard orbit, is proposed and designed in this paper. Firstly the debris in geostationary orbit is introduced based on DISCOS database, and then the debris capture mission sequence by using space tether net system is designed, after that the detailed descriptions about capture tool are presented to illustrate the advantages of flexible capture net. Finally the key subsystems, including Data Management Compute, Attitude & Orbital Control subsystem, Target Tracking subsystem, are designed based on the mission requirements.
{"title":"Space Tether Net System for Debris Capture and Removal","authors":"Zhai Guang, Zhang Jing-rui","doi":"10.1109/IHMSC.2012.71","DOIUrl":"https://doi.org/10.1109/IHMSC.2012.71","url":null,"abstract":"In order to recovery geostationary orbit environment, a Space Tether-Net system, which is used to capture and remove the retired or malfunction satellites to graveyard orbit, is proposed and designed in this paper. Firstly the debris in geostationary orbit is introduced based on DISCOS database, and then the debris capture mission sequence by using space tether net system is designed, after that the detailed descriptions about capture tool are presented to illustrate the advantages of flexible capture net. Finally the key subsystems, including Data Management Compute, Attitude & Orbital Control subsystem, Target Tracking subsystem, are designed based on the mission requirements.","PeriodicalId":431532,"journal":{"name":"2012 4th International Conference on Intelligent Human-Machine Systems and Cybernetics","volume":"128 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124611156","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}
MSP430-based portable recorder could use in various occasion outside laboratory. Researchers no more need PC and other not portable instrument for measure and record the data about solar radiation, PV output and domestic hot water. Use DS12887 as real time clock, DS18B20 as the environment thermometer, has LED display and key for field use, 8-channel 4~20mA common standard signals sampling. All the sampling data were saved in SD card as CSV format. The device powered by rechargeable battery and could charge with solar cell, could long term record in the field.
{"title":"Microcontroller Data Recorder for Solar Energy Hybird CPV-Thermal System Evaluation","authors":"Fei Xie, Guoxian Zhang","doi":"10.1109/IHMSC.2012.35","DOIUrl":"https://doi.org/10.1109/IHMSC.2012.35","url":null,"abstract":"MSP430-based portable recorder could use in various occasion outside laboratory. Researchers no more need PC and other not portable instrument for measure and record the data about solar radiation, PV output and domestic hot water. Use DS12887 as real time clock, DS18B20 as the environment thermometer, has LED display and key for field use, 8-channel 4~20mA common standard signals sampling. All the sampling data were saved in SD card as CSV format. The device powered by rechargeable battery and could charge with solar cell, could long term record in the field.","PeriodicalId":431532,"journal":{"name":"2012 4th International Conference on Intelligent Human-Machine Systems and Cybernetics","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124892697","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}
Textural features is very important properties in many types of images. Partitioning an image into homogeneous regions based on textural features is useful in computer vision. Many texture classification algorithms have been proposed including Local Binary Patterns, Gray Level Co-Occurrence and K-View based algorithms, to name a few. Among of them, The K-View using Rotation-invariant feature algorithm (K-View-R) and the fast weighted K-View-Voting algorithm (K-View-V) produce higher classification accuracy by compare with those original K-View based algorithms. However, there still have some rooms for improvement. In this paper, by analyzing those K-View based algorithms, an attempt to utilize the advantages of the K-View-R and K-View-V was investigated. The new approach which we called combinatorial K-View based method was presented. To test and evaluate the proposed method, some experiments were carried out on a lot of textural images which taken from a standard database. Preliminary experimental results demonstrated the new method achieved more accurate classification by compare with other K-View based methods.
{"title":"A Combinatorial K-View Based Algorithm for Image Texture Classification","authors":"Yihua Lan, H. Ren, Yi Chen","doi":"10.1109/IHMSC.2012.137","DOIUrl":"https://doi.org/10.1109/IHMSC.2012.137","url":null,"abstract":"Textural features is very important properties in many types of images. Partitioning an image into homogeneous regions based on textural features is useful in computer vision. Many texture classification algorithms have been proposed including Local Binary Patterns, Gray Level Co-Occurrence and K-View based algorithms, to name a few. Among of them, The K-View using Rotation-invariant feature algorithm (K-View-R) and the fast weighted K-View-Voting algorithm (K-View-V) produce higher classification accuracy by compare with those original K-View based algorithms. However, there still have some rooms for improvement. In this paper, by analyzing those K-View based algorithms, an attempt to utilize the advantages of the K-View-R and K-View-V was investigated. The new approach which we called combinatorial K-View based method was presented. To test and evaluate the proposed method, some experiments were carried out on a lot of textural images which taken from a standard database. Preliminary experimental results demonstrated the new method achieved more accurate classification by compare with other K-View based methods.","PeriodicalId":431532,"journal":{"name":"2012 4th International Conference on Intelligent Human-Machine Systems and Cybernetics","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127017016","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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