Pub Date : 2008-07-13DOI: 10.1109/INDIN.2008.4618313
W. Chua, Xue-Ming Yuan, W. Ng, T. Cai
Accurately forecasting intermittent demands is a concern to many industries. This paper proposes an approach to improve forecast accuracies on intermittent demands given up to 36 months of historical data. The conventional approach to forecasting problems with irregular patterns is Crostonpsilas method. We use different methods based on modifications of Crostonpsilas method to forecast lumpy intermittent demand and non-lumpy intermittent demand. The historical data for lumpy intermittent demand is split into three series while that for non-lumpy demand is split into two. Forecasting is then performed separately on each of the series. The intermittent demand forecaster has been tested on two datasets and compared to Crostonpsilas method. The intermittent demand forecaster is able to reduce average forecasting error by 10.22% and 27.42% compared to Crostonpsilas method for non-lumpy demand and lumpy demand, respectively.
{"title":"Short term forecasting for lumpy and non-lumpy intermittent demands","authors":"W. Chua, Xue-Ming Yuan, W. Ng, T. Cai","doi":"10.1109/INDIN.2008.4618313","DOIUrl":"https://doi.org/10.1109/INDIN.2008.4618313","url":null,"abstract":"Accurately forecasting intermittent demands is a concern to many industries. This paper proposes an approach to improve forecast accuracies on intermittent demands given up to 36 months of historical data. The conventional approach to forecasting problems with irregular patterns is Crostonpsilas method. We use different methods based on modifications of Crostonpsilas method to forecast lumpy intermittent demand and non-lumpy intermittent demand. The historical data for lumpy intermittent demand is split into three series while that for non-lumpy demand is split into two. Forecasting is then performed separately on each of the series. The intermittent demand forecaster has been tested on two datasets and compared to Crostonpsilas method. The intermittent demand forecaster is able to reduce average forecasting error by 10.22% and 27.42% compared to Crostonpsilas method for non-lumpy demand and lumpy demand, respectively.","PeriodicalId":112553,"journal":{"name":"2008 6th IEEE International Conference on Industrial Informatics","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129756848","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 : 2008-07-13DOI: 10.1109/INDIN.2008.4618139
Y. Shin, Kyoungtaik Park, J. Ha, Sang-Kyun Shim
Process in LCD (liquid crystal display) industries has been very rapid and their manufacturing lines require the robots which can handle large LCD glasses and load more LCD glasses into cassette. In order to develop a robot satisfying these demands and verify the design of the concept robot for LCD glass-handling, a prototype robot has been constructed and its performance test has been implemented. The positioning repeatability, fork static deflection and moving speed are tested. The tested results agree with the design well.
{"title":"Performance test of large telescopic robot for LCD glass handling","authors":"Y. Shin, Kyoungtaik Park, J. Ha, Sang-Kyun Shim","doi":"10.1109/INDIN.2008.4618139","DOIUrl":"https://doi.org/10.1109/INDIN.2008.4618139","url":null,"abstract":"Process in LCD (liquid crystal display) industries has been very rapid and their manufacturing lines require the robots which can handle large LCD glasses and load more LCD glasses into cassette. In order to develop a robot satisfying these demands and verify the design of the concept robot for LCD glass-handling, a prototype robot has been constructed and its performance test has been implemented. The positioning repeatability, fork static deflection and moving speed are tested. The tested results agree with the design well.","PeriodicalId":112553,"journal":{"name":"2008 6th IEEE International Conference on Industrial Informatics","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128757542","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 : 2008-07-13DOI: 10.1109/INDIN.2008.4618290
H.K. Lin, J. Harding, A. Choudhary
The new challenge of enterprise interoperability is to share knowledge inter-business via networks to enable all partners to benefit and WIN, WIN, WIN in their markets. The universal knowledge moderator (UKM) project envisages the delivery of collaborative knowledge services which learn through knowledge discovery module; exploit interoperability services through a semantic Web based mediated schema within universal inter-experts module; and increase inter-team awareness whilst improving coordination through moderation module, to achieve the global visions of enterprise interoperability. The overall aim of UKM is to significantly enhance the moderation activities for universal knowledge cooperation, using inter-connected semantic Web system.
{"title":"The Universal Knowledge Moderator for globally distributed and collaborative e-manufacturing","authors":"H.K. Lin, J. Harding, A. Choudhary","doi":"10.1109/INDIN.2008.4618290","DOIUrl":"https://doi.org/10.1109/INDIN.2008.4618290","url":null,"abstract":"The new challenge of enterprise interoperability is to share knowledge inter-business via networks to enable all partners to benefit and WIN, WIN, WIN in their markets. The universal knowledge moderator (UKM) project envisages the delivery of collaborative knowledge services which learn through knowledge discovery module; exploit interoperability services through a semantic Web based mediated schema within universal inter-experts module; and increase inter-team awareness whilst improving coordination through moderation module, to achieve the global visions of enterprise interoperability. The overall aim of UKM is to significantly enhance the moderation activities for universal knowledge cooperation, using inter-connected semantic Web system.","PeriodicalId":112553,"journal":{"name":"2008 6th IEEE International Conference on Industrial Informatics","volume":"123 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127051430","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 : 2008-07-13DOI: 10.1109/INDIN.2008.4618171
A. Widyotriatmo, H. A. Tjokronegoro, K. Hong
This paper presents a system that provides the capability of humanoid robot to separate sound from the mixture of sounds. The system utilizes a Kulback-Leibler minimization scheme algorithm. A nonwhitening post filter, which is a diagonal inverse of the separation filter, is implemented to improve the separation performance. The results show that a real recording of a speech signal mixed with loud music is well separated and the utilization of nonwhitening post filter improves the performance of separation signal in the frequency domain.
{"title":"A nonwhitening post filter to improve the performance of sound source separation","authors":"A. Widyotriatmo, H. A. Tjokronegoro, K. Hong","doi":"10.1109/INDIN.2008.4618171","DOIUrl":"https://doi.org/10.1109/INDIN.2008.4618171","url":null,"abstract":"This paper presents a system that provides the capability of humanoid robot to separate sound from the mixture of sounds. The system utilizes a Kulback-Leibler minimization scheme algorithm. A nonwhitening post filter, which is a diagonal inverse of the separation filter, is implemented to improve the separation performance. The results show that a real recording of a speech signal mixed with loud music is well separated and the utilization of nonwhitening post filter improves the performance of separation signal in the frequency domain.","PeriodicalId":112553,"journal":{"name":"2008 6th IEEE International Conference on Industrial Informatics","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132144186","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 : 2008-07-13DOI: 10.1109/INDIN.2008.4618187
Shu-xin Chen, H. Gu
In this paper, the statistical characteristic of the troposcatter channel is analyzed and a troposcatter simulation model under fast fading characteristics is established which is based on the WSSUS assumption. The simulated result is compared with the theoretic curve of the BER performance which is derived by calculation. Inconspicuous contrast between them proves that the troposcatter channel model is reasonable and feasible. This model can function as an efficient tool for further studying in troposcatter communication.
{"title":"A detailed simulation study for troposcatter channel","authors":"Shu-xin Chen, H. Gu","doi":"10.1109/INDIN.2008.4618187","DOIUrl":"https://doi.org/10.1109/INDIN.2008.4618187","url":null,"abstract":"In this paper, the statistical characteristic of the troposcatter channel is analyzed and a troposcatter simulation model under fast fading characteristics is established which is based on the WSSUS assumption. The simulated result is compared with the theoretic curve of the BER performance which is derived by calculation. Inconspicuous contrast between them proves that the troposcatter channel model is reasonable and feasible. This model can function as an efficient tool for further studying in troposcatter communication.","PeriodicalId":112553,"journal":{"name":"2008 6th IEEE International Conference on Industrial Informatics","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132164101","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 : 2008-07-13DOI: 10.1109/INDIN.2008.4618148
Shuanghe Yu, Shuang Liu, He Xu
The trajectory-tracking problem of the nonholonomic mobile robots with two drivable wheels is solved by an adaptive fuzzy control strategy in this paper. A kinematic controller is firstly presented for the kinematic model, and then, an adaptive fuzzy controller is designed for the uncertain dynamic model with disturbance based on the kinematic controller. The stability of the closed-loop system and the boundness of tracking errors are proved using Lyapunov theory. The simulation results validate its more superior performance through comparisons.
{"title":"Adaptive fuzzy trajectory-tracking control of uncertain nonholonomic mobile robots’","authors":"Shuanghe Yu, Shuang Liu, He Xu","doi":"10.1109/INDIN.2008.4618148","DOIUrl":"https://doi.org/10.1109/INDIN.2008.4618148","url":null,"abstract":"The trajectory-tracking problem of the nonholonomic mobile robots with two drivable wheels is solved by an adaptive fuzzy control strategy in this paper. A kinematic controller is firstly presented for the kinematic model, and then, an adaptive fuzzy controller is designed for the uncertain dynamic model with disturbance based on the kinematic controller. The stability of the closed-loop system and the boundness of tracking errors are proved using Lyapunov theory. The simulation results validate its more superior performance through comparisons.","PeriodicalId":112553,"journal":{"name":"2008 6th IEEE International Conference on Industrial Informatics","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127842666","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 : 2008-07-13DOI: 10.1109/INDIN.2008.4618229
Sung-Jo Lim, Bae-keun Kwon, D. Kang
A fast method of plane detection for mobile robot application is proposed using the normal vector of a triangle inscribed in a small circular region such that the normal vector passes through the circumcenter area of the triangle. To reduce the effects of noises and outliers, the triangle rotates with respect to the center position of the circular region, and generates a series of inscribed triangles having different normal vectors. The direction vectors of these generated triangles are normalized and then the median direction of the normal vectors is used to test the planarity of the circular region.
{"title":"A method to find local planar region from 3D range data","authors":"Sung-Jo Lim, Bae-keun Kwon, D. Kang","doi":"10.1109/INDIN.2008.4618229","DOIUrl":"https://doi.org/10.1109/INDIN.2008.4618229","url":null,"abstract":"A fast method of plane detection for mobile robot application is proposed using the normal vector of a triangle inscribed in a small circular region such that the normal vector passes through the circumcenter area of the triangle. To reduce the effects of noises and outliers, the triangle rotates with respect to the center position of the circular region, and generates a series of inscribed triangles having different normal vectors. The direction vectors of these generated triangles are normalized and then the median direction of the normal vectors is used to test the planarity of the circular region.","PeriodicalId":112553,"journal":{"name":"2008 6th IEEE International Conference on Industrial Informatics","volume":"9 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127936418","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 : 2008-07-13DOI: 10.1109/INDIN.2008.4618220
Ming-Hsien Yang, S. Chung, Ching-Kuei Kao
Considering the two-stage flexible flow shop with dynamic job arrival, each stage contains identical parallel machines, and the second stage receives jobs with stochastic arriving time from first stage. To estimate the job completion time at each stage is useful to enhance the customer service or production performances. The completion time of jobs at each stage can be determined with the sum of the stage arriving time, the expected stage waiting time, and the expected stage service time of jobs. The expected stage waiting time of job relates to the utilization rates of machines, which should be corrected due to the idleness of machine. The idle time depends on the number of jobs in the system at specific time. The birth-and-death process can be used to describe probabilistically how the number of jobs in the system changes as time increasing. Note the stage service time of jobs relates to the estimated setup time and the processing time of jobs at each stage. To analyze the accuracy on the estimated stage completion time of jobs, a computational test through simulation is conducted to verify the proposed probabilistic model.
{"title":"To estimate the stage completion time for a two-stage flexible flow shop with dynamic job arrival","authors":"Ming-Hsien Yang, S. Chung, Ching-Kuei Kao","doi":"10.1109/INDIN.2008.4618220","DOIUrl":"https://doi.org/10.1109/INDIN.2008.4618220","url":null,"abstract":"Considering the two-stage flexible flow shop with dynamic job arrival, each stage contains identical parallel machines, and the second stage receives jobs with stochastic arriving time from first stage. To estimate the job completion time at each stage is useful to enhance the customer service or production performances. The completion time of jobs at each stage can be determined with the sum of the stage arriving time, the expected stage waiting time, and the expected stage service time of jobs. The expected stage waiting time of job relates to the utilization rates of machines, which should be corrected due to the idleness of machine. The idle time depends on the number of jobs in the system at specific time. The birth-and-death process can be used to describe probabilistically how the number of jobs in the system changes as time increasing. Note the stage service time of jobs relates to the estimated setup time and the processing time of jobs at each stage. To analyze the accuracy on the estimated stage completion time of jobs, a computational test through simulation is conducted to verify the proposed probabilistic model.","PeriodicalId":112553,"journal":{"name":"2008 6th IEEE International Conference on Industrial Informatics","volume":"301 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121463619","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 : 2008-07-13DOI: 10.1109/INDIN.2008.4618143
A. Li, Defeng Wu, Zi Ma
Main contributions include: (1) A platform composed of a structure-light vision sensor and a industrial robot is established for robot calibration. (2) Transform the robot calibration to an optimization problem through measuring a fixed point at different hand poses and positions. (3) A multi-thread particle swarm optimization algorithm is proposed and applied in robot kinematic parameter estimation. The effectiveness of the proposed method is validated by simulation.
{"title":"Robot calibration based on multi-thread particle swarm optimization","authors":"A. Li, Defeng Wu, Zi Ma","doi":"10.1109/INDIN.2008.4618143","DOIUrl":"https://doi.org/10.1109/INDIN.2008.4618143","url":null,"abstract":"Main contributions include: (1) A platform composed of a structure-light vision sensor and a industrial robot is established for robot calibration. (2) Transform the robot calibration to an optimization problem through measuring a fixed point at different hand poses and positions. (3) A multi-thread particle swarm optimization algorithm is proposed and applied in robot kinematic parameter estimation. The effectiveness of the proposed method is validated by simulation.","PeriodicalId":112553,"journal":{"name":"2008 6th IEEE International Conference on Industrial Informatics","volume":"519 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123119134","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 presents a hardware solution for the implement of an adaptive speed-adjustable scheme for 3D laser scanning. A lot of researches have presented the method of obtaining 3D perception through 2D laser radar, but their methods almost have some disadvantages, thereinto a novel organ to obtain 3D perception through 2D laser radar was presented, but it also has a disadvantage in real-time processing, aiming at the disadvantage of it, the paper does some improvement through adopting a hardware combination of FPGA and DSP to accelerate the system easily, based on FPGA and DSP, the paper realize an adaptive speed-adjustable scheme, the experiment shows the improved system has a good performance in 3D perception obtaining.
{"title":"An adaptive speed-adjustable scheme for 3D laser scanning based on FPGA and DSP","authors":"Weiyang Song, Weihai Chen, Jingmeng Liu, Lihong Xu","doi":"10.1109/INDIN.2008.4618071","DOIUrl":"https://doi.org/10.1109/INDIN.2008.4618071","url":null,"abstract":"This paper presents a hardware solution for the implement of an adaptive speed-adjustable scheme for 3D laser scanning. A lot of researches have presented the method of obtaining 3D perception through 2D laser radar, but their methods almost have some disadvantages, thereinto a novel organ to obtain 3D perception through 2D laser radar was presented, but it also has a disadvantage in real-time processing, aiming at the disadvantage of it, the paper does some improvement through adopting a hardware combination of FPGA and DSP to accelerate the system easily, based on FPGA and DSP, the paper realize an adaptive speed-adjustable scheme, the experiment shows the improved system has a good performance in 3D perception obtaining.","PeriodicalId":112553,"journal":{"name":"2008 6th IEEE International Conference on Industrial Informatics","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126584445","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：