| 著者 | 小西 正躬| 中野 孝一| 今井 純| |
|---|---|
| 発行日 | 2011-06-01 |
| 出版物タイトル | 鉄と鋼 |
| 巻 | 97巻 |
| 号 | 6号 |
| 資料タイプ | 学術雑誌論文 |
| JaLCDOI | 10.18926/14099 |
|---|---|
| フルテキストURL | Mem_Fac_Eng_OU_40_1_23.pdf |
| 著者 | 菊池 純二| 小西 正躬| 西 竜志| 今井 純| |
| 抄録 | In steel works, iron ores are stored in ore yard and sent to various plants of down stream accoding to transfer requests. To attain stable operation, it is neccesary to keep a certain allowable stock level in ore tanks of all plants. To this purpose, ore transfer routing method has been developed based on decentralized agent method. In case of disaster such as a big earthquake or a big fire, damages in the facilities of industrial complex may be unavoidable. In this paper, decentralized optimization method is tested to cope with such emergencies. Decentralized agents corresponding to kind of ore make their own transfer route plan exchanging information with others. As the application of the proposed method, transfer scheduling in ore yard in steel works are made in case of destruction of transfer facilities. |
| 出版物タイトル | Memoirs of the Faculty of Engineering, Okayama University |
| 発行日 | 2006-01 |
| 巻 | 40巻 |
| 号 | 1号 |
| 開始ページ | 23 |
| 終了ページ | 30 |
| ISSN | 0475-0071 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002308160 |
| JaLCDOI | 10.18926/14062 |
|---|---|
| フルテキストURL | Mem_Fac_Eng_OU_42_60.pdf |
| 著者 | Kikuchi, Junji| 小西 正躬| 今井 純| |
| 抄録 | In steel works, molten metals discharged from blast furnace are put into a pan for transportation called torpedo and transported to steel making factory by a locomotive. In molten metals transportation, it becomes issues to prevent temperature drop of molten metals for stable production of down stream plants to shorten transportation time. Therefore it is necessary to make an appropriate plan for molten metals transfer considering the production and the transportation simultaneously. In this paper, molten metals transfer planning method is proposed including production scheduling. That is, torpedo schedule, transfer request assignment and route plan of locomotives are optimized according to each objective. |
| 出版物タイトル | Memoirs of the Faculty of Engineering, Okayama University |
| 発行日 | 2008-01 |
| 巻 | 42巻 |
| 号 | 1号 |
| 開始ページ | 60 |
| 終了ページ | 70 |
| ISSN | 0475-0071 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002308612 |
| JaLCDOI | 10.18926/17835 |
|---|---|
| フルテキストURL | Mem_Fac_Eng_OU_43_32.pdf |
| 著者 | 馬渕 周治| 小西 正躬| 今井 純| |
| 抄録 | A tractor-trailer vehicle in the factory might move on the route determined beforehand. However, automation of a tractor-trailer vehicle is difficult so that it is necessary to consider the nonlinearity of a vehicle and a trailer. In this research, the effective tracking control method of a tractor-trailer vehicle is proposed. The control method using time-state control form for a preview control is presented, and be applied a tractor-trailer vehicle with nonholonomic characteristics. Results of numerical experiments are presented to check effectiveness of the proposed control method. |
| 出版物タイトル | Memoirs of the Faculty of Engineering, Okayama University |
| 発行日 | 2009-01 |
| 巻 | 43巻 |
| 開始ページ | 32 |
| 終了ページ | 38 |
| ISSN | 1349-6115 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002308736 |
| JaLCDOI | 10.18926/14064 |
|---|---|
| フルテキストURL | Mem_Fac_Eng_OU_42_79.pdf |
| 著者 | Notsu Tadafumi| 小西 正躬| 今井 純| |
| 抄録 | The operations of a reactor furnace such as a blast furnace still depend on the experiences and intuitions of skilled operators due to the complexity of internal furnace phenomena and high temperature. There is a great demand for stable operations under the circumstances of a decrease in the number of skilled operators and difficulty in technology inheritance. This paper aims to construct mathematical description for control of a reactor furnace. Further, the linear-quadratic-gaussian control system for a reactor furnace is proposed, which estimates inner furnace temperature distribution using measured data near furnace wall. Temperature distribution of a furnace is controlled based on the estimated inner temperature distribution changing of boundary conditions of a furnace. The practicability of the proposed control method was checked through numerical experiments. |
| 出版物タイトル | Memoirs of the Faculty of Engineering, Okayama University |
| 発行日 | 2008-01 |
| 巻 | 42巻 |
| 号 | 1号 |
| 開始ページ | 79 |
| 終了ページ | 90 |
| ISSN | 0475-0071 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002308624 |
| JaLCDOI | 10.18926/17841 |
|---|---|
| フルテキストURL | Mem_Fac_Eng_OU_43_55.pdf |
| 著者 | 井上 真一郎| 小西 正躬| 今井 純| |
| 抄録 | In this research, an image processing method and a system for inspection support of a rod figured cutting tool are developed. As is well known, the visual inspection of a cutting tool by image processing is not easy, because cutting blade have a helical blade structure. To cope with the problem, an experimental facility with rotation and longitudinal tool shift functions to enable acquisition of blade surface pictures along a cutting rod is developed. The type of the defect treated in this paper is the spot of coating on blade surface. To judge the quality of the processed image of blade surface, neural network with autonomous learning is used. The processed image of cutting tool is divided into 64 × 64 blocks used for the input to the neural networks. Before input, each block data is preprocessed applying a edge detection filter and a transformation by the discrete fourier transform (DFT). Using these technologies, the experimental inspection system is built and tested to check the capabilities of the inspection algorithms. The diagnostic performance of the surface defect of a cutting tool was confirmed. There remained a problem to mis judge the normal tools as the defect. |
| 出版物タイトル | Memoirs of the Faculty of Engineering, Okayama University |
| 発行日 | 2009-01 |
| 巻 | 43巻 |
| 開始ページ | 55 |
| 終了ページ | 60 |
| ISSN | 1349-6115 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002308973 |
| JaLCDOI | 10.18926/14097 |
|---|---|
| フルテキストURL | Mem_Fac_Eng_OU_40_1_9.pdf |
| 著者 | 貫名 高史| 小西 正躬| 西 竜志| 今井 純| |
| 抄録 | Controls of the temperature, pressure and flowing quantity are important for the stable operation of the product quality in the distillation tower. The usual measuring way of product quality estimation is made by the off-line analysis. In this paper, online estimation method of product quality is studied for improving the product quality. The estimation method based on stochastic analysis was developed for online estimation. In this paper, the data of temperature, pressure and flow volum in the distillation tower are treated. As the estimation models, RNN (Recurrent Neural Net Work) and PLS (Partial Least Square Regression Method) were adopted. The actual plant data were used in the analysis. Both PLS and RNN models could compensate each other to improve the accuracy in estimation. |
| 出版物タイトル | Memoirs of the Faculty of Engineering, Okayama University |
| 発行日 | 2006-01 |
| 巻 | 40巻 |
| 号 | 1号 |
| 開始ページ | 9 |
| 終了ページ | 15 |
| ISSN | 0475-0071 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002308095 |
| JaLCDOI | 10.18926/14082 |
|---|---|
| フルテキストURL | Mem_Fac_Eng_OU_41_1_31.pdf |
| 著者 | 濱名 良平| 小西 正躬| 今井 純| |
| 抄録 | Various kind of productions are made in semiconductor factories, where it employs the production system with multiprocess and multiple Automated Guided Vehicles(AGVs) for transportation. It is difficult to optimize planning of production and transportation simultaneously because of the complicated flow of semifinished products. This paper describes the formulations of production scheduling and transportation routing, and algorithm for simultaneous optimization of plannings by using logic cuts. The entire problem is decomposed to the master problem and the sub problem. If it derives the infeasible solutions, new constraints are added to the master problem to eliminate the solution area including infeasible solutions. The results of about optimality and computation time by using CPLEX solver are shown compared with conventional decomposition method to check up effectivity of proposed method in small size problem, and about optimality and computaion time for large scale problem. |
| 出版物タイトル | Memoirs of the Faculty of Engineering, Okayama University |
| 発行日 | 2007-01 |
| 巻 | 41巻 |
| 号 | 1号 |
| 開始ページ | 31 |
| 終了ページ | 43 |
| ISSN | 0475-0071 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002308108 |
| JaLCDOI | 10.18926/46977 |
|---|---|
| フルテキストURL | mfe_37_2_013_027.pdf |
| 著者 | Shibuta, Taizo| Konishi, Masami| Imai, Jun| Nishi, Tatsushi| |
| 抄録 | Nowadays, various kind of reactor furnaces are widely used for the production in industry. The raw materials charged into the furnace generate reaction heat produced by blowing gas. Generally speaking, the reaction heat generated in the furnace is remarkably high. Therefore the occurrence of an inappropriate temperature distribution in the furnace may make damege or serious accident of the furnace. This is the motivation of furnace control. The author is considering the application of studied results to the furnace control of Blast Furnace in steel industry. To the propose, the approximated and simplified Macro Model of the Blast Furnace is constructed which has the function of representation of qualitative characteristics of the furnace in dynamical sense. The furnace temperature, distribution greatly effects both on the producting and the product quality of the furnace. Needless to say, stable furnace operation is indispensable for the economical prosperity of the industry. In this paper, macro simulation of the furnace is developed to support the analysis and design of the furnace control. Using the simulator, the stability and the control characteristics for inner furnace temperature distribtion are analised quantitatively. |
| 出版物タイトル | Memoirs of the Faculty of Engineering, Okayama University |
| 発行日 | 2003-03 |
| 巻 | 37巻 |
| 号 | 2号 |
| 開始ページ | 13 |
| 終了ページ | 27 |
| ISSN | 0475-0071 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 80015999991 |
| 著者 | 竹永 洋貴| 小西 正躬| 今井 純| |
|---|---|
| 発行日 | 2009-11-11 |
| 出版物タイトル | Proceedings : Fifth International Workshop on Computational Intelligence & Applications |
| 巻 | 2009巻 |
| 号 | 1号 |
| 資料タイプ | 会議発表論文 |
| JaLCDOI | 10.18926/14098 |
|---|---|
| フルテキストURL | Mem_Fac_Eng_OU_40_1_16.pdf |
| 著者 | 阿部 快洋| 小西 正躬| 西 竜志| 今井 純| |
| 抄録 | In this study, auto tuning of PID control gains in hot strip looper controller is made based on RNN model. Neuro emulator is employed to model the characteristics of looper dynamics. Combining neuro emulator and RNN model, auto tuning system of PID control gains is constructed. As the inputs to RNN, plural evaluation functions which reflect individual preference of human experts. Further, Self learning mechamism is embeded to RNN model which enables adaptation to the change in rolling chracteristics. Through numerical experiments, the effect of the proposed method is ascertained. |
| 出版物タイトル | Memoirs of the Faculty of Engineering, Okayama University |
| 発行日 | 2006-01 |
| 巻 | 40巻 |
| 号 | 1号 |
| 開始ページ | 16 |
| 終了ページ | 22 |
| ISSN | 0475-0071 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002308615 |
| JaLCDOI | 10.18926/17837 |
|---|---|
| フルテキストURL | Mem_Fac_Eng_OU_43_39.pdf |
| 著者 | 桑嶋 崇行| 今井 純| 小西 正躬| |
| 抄録 | This paper presents method of the controller design for one link arm with parametric uncertainty. Recently, many manufacturing robots are operated in manufacturing facilities, with the aim of labor and cost saving or improvement of the productivity. Such robots need to have positioning performance of high precision. In condition that there is an uncertainty in plant dynamics, desired control performance may not be attained because the controller is designed according to the mathematical model of a plant. So it is important that the designed control system have a robust control performance. In this paper, the robust controller is designed using Quantitative Feedback Theory (QFT) for one link arm with parametric uncertainty. Simulation experiments are run for control system designed by using QFT and conventional method. The results are compared with each other and it is found that the control system designed by QFT shows a robust performance and can suppress the unevenness of output against parametric uncertainty. |
| 出版物タイトル | Memoirs of the Faculty of Engineering, Okayama University |
| 発行日 | 2009-01 |
| 巻 | 43巻 |
| 開始ページ | 39 |
| 終了ページ | 48 |
| ISSN | 1349-6115 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002308875 |
| JaLCDOI | 10.18926/17839 |
|---|---|
| フルテキストURL | Mem_Fac_Eng_OU_43_49.pdf |
| 著者 | 赤松 慎也| 小西 正躬| 今井 純| |
| 抄録 | In this paper, the controlled target is the SCARA robot with two links, and the object is fine control of the arm head position of the robot. To attain the object, Internal Model Control (IMC) is introduced. A nonlinear equations are for robot dynamics formulated by solving Lagrange equation, and is linearized to design control system by IMC. The controller of IMC is designed or synthesisted as the inverse system of the linearized model, and IMC filter model is selected. Also, reference filter is introduced to make the improvement of performance. The result of control performance by IMC is compared with that of PID numerically, accuracy and incoherency are confirmed. |
| 出版物タイトル | Memoirs of the Faculty of Engineering, Okayama University |
| 発行日 | 2009-01 |
| 巻 | 43巻 |
| 開始ページ | 49 |
| 終了ページ | 54 |
| ISSN | 1349-6115 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002308854 |
| JaLCDOI | 10.18926/14063 |
|---|---|
| フルテキストURL | Mem_Fac_Eng_OU_42_71.pdf |
| 著者 | Kawase, Koichi| 小西 正躬| 今井 純| |
| 抄録 | In this research, Fuzzy control theory is applied to the inventory control of the supply chain between multiple companies. The proposed control method deals with the amount of inventories expressing supply chain between multiple companies. Referring past demand and tardiness, inventory amounts of raw materials are determined by Fuzzy inference. The method that an appropriate inventory control becomes possible optimizing fuzzy control gain by using SA method for Fuzzy control. The variation of uncertain demand is given to the proposal method. Furthermore, the method of forecasting demand and the effectiveness of fuzzy control method are confirmed by numerical experiments. As the results, the proposal method suppressed increase in an unnecessary cost when demand varies. |
| 出版物タイトル | Memoirs of the Faculty of Engineering, Okayama University |
| 発行日 | 2008-01 |
| 巻 | 42巻 |
| 号 | 1号 |
| 開始ページ | 71 |
| 終了ページ | 78 |
| ISSN | 0475-0071 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002308296 |
| JaLCDOI | 10.18926/44495 |
|---|---|
| フルテキストURL | mfe_045_001_014.pdf |
| 著者 | Akiyoshi, Tatsuro| Imai, Jun| Konishi, Masami| |
| 抄録 | This paper presents a method of the controller design for the handling machine by using dsPIC(Digital Signal Processor + Peripheral Interface Controller). Recently, many manufacturing robots are operated in manufacturing facilities, with the aim of labor, cost saving, and improvement of the productivity. Such robots need to have positioning performance of high precision and simultaneously to save cost. In this paper, a digital optimal servo controller is designed, and it is implemented into our barebones controller which involves dsPIC. We have designed and manufactured the controller which is added suitable peripherals to improve the consistency between the mechanical machine operating in continuous time and controller in discrete time. The significance of this research is that digital implementation of the embedded system which has performance-limitation has ensured a comparable result, against the one with PC which has broad utility. When it is used as a controller, it is possible to restrain product prices greatly equivalent PC precision. We demonstrate potential that good control can be achieved even with low cost. Our research has lead to the viability of lower cost and higher performance system for the production process at factories. |
| 出版物タイトル | Memoirs of the Faculty of Engineering, Okayama University |
| 発行日 | 2011-01 |
| 巻 | 45巻 |
| 開始ページ | 1 |
| 終了ページ | 14 |
| ISSN | 1349-6115 |
| 言語 | 英語 |
| 著作権者 | Copyright © by the authors |
| 論文のバージョン | publisher |
| NAID | 120002905951 |
| フルテキストURL | fulltext.pdf |
|---|---|
| 著者 | Imai, Jun| Wada, Kiyoshi| |
| キーワード | error analysis flexible structures frequency-domain analysis linear programming modelling parameter estimation uncertain systems |
| 備考 | Print ISBN: 0-7803-6638-7| |
| 発行日 | 2000-12 |
| 出版物タイトル | Proceedings of the 39th IEEE Conference on Decision and Control |
| 巻 | 4巻 |
| 出版者 | IEEE |
| 開始ページ | 3780 |
| 終了ページ | 3784 |
| ISSN | 0191-2216 |
| NCID | BA51644536 |
| 資料タイプ | 学術雑誌論文 |
| 言語 | 英語 |
| OAI-PMH Set | 岡山大学 |
| 著作権者 | © 2000 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. |
| 論文のバージョン | publisher |
| DOI | 10.1109/CDC.2000.912298 |
| Web of Science KeyUT | 000172029000684 |
| フルテキストURL | fulltext.pdf |
|---|---|
| 著者 | Imai, Jun| |
| キーワード | feasible sets Kelvin-Voigt damping dc gain |
| 備考 | Published with permission from the copyright holder. This is the institute's copy, as published in SICE 2002. Proceedings of the 41st SICE Annual Conference, 5-7 Aug. 2002, Volume 3, Pages 1588-1591. Publisher URL:http://ieeexplore.ieee.org/search/wrapper.jsp?arnumber=1196547 Copyright © 2002 IEEE. All rights reserved.| |
| 発行日 | 2002-8 |
| 出版物タイトル | SICE 2002. Proceedings of the 41st SICE Annual Conference |
| 巻 | 3巻 |
| 開始ページ | 1588 |
| 終了ページ | 1591 |
| 資料タイプ | 学術雑誌論文 |
| 言語 | 英語 |
| OAI-PMH Set | 岡山大学 |
| DOI | 10.1109/sice.2002.1196547 |
| JaLCDOI | 10.18926/46998 |
|---|---|
| フルテキストURL | mfe_36_1_029_039.pdf |
| 著者 | Imai, Jun| Wada, Kiyoshi| |
| 抄録 | A procedure for control-oriented modeling is proposed for large flexible structures with unknown modal parameters. Techniques on quantification of errors in modal truncated nominal models are developed for the case where a finite number of upper and lower bounds of the unknown modal parameters are given. A feasible set of systems matching the conditions is introduced, and then error bounds covering the feasible set are established in the frequency domain. The bounds are easily checked using linear programming for any user-specified frequency. The feasibility of the proposed scheme is illustrated by numerical study on an ideal flexible beam example. |
| 出版物タイトル | Memoirs of the Faculty of Engineering, Okayama University |
| 発行日 | 2001-12 |
| 巻 | 36巻 |
| 号 | 1号 |
| 開始ページ | 29 |
| 終了ページ | 39 |
| ISSN | 0475-0071 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 80012887118 |
| 著者 | Imai, Jun| |
|---|---|
| 発行日 | 2002-12 |
| 出版物タイトル | Decision and Control |
| 資料タイプ | 学術雑誌論文 |
| JaLCDOI | 10.18926/14081 |
|---|---|
| フルテキストURL | Mem_Fac_Eng_OU_41_1_20.pdf |
| 著者 | 今村 拓司| 小西 正躬| 今井 純| |
| 抄録 | In this paper, we propose a simultaneous optimization method for inventory control and production planning problem for a chemical batch plant. The plant consists of blending process, intermediate storage tanks and filling process. In the proposed method, the original problem is decomposed into production planning sub-problem and inventory control sub-problem. Then the decision variables are optimized by alternately solving each sub-problem. The solution of the proposed method is compared with that of centralized optimization method. The effectiveness of the proposed method is investigated from numerical computational results. |
| 出版物タイトル | Memoirs of the Faculty of Engineering, Okayama University |
| 発行日 | 2007-01 |
| 巻 | 41巻 |
| 号 | 1号 |
| 開始ページ | 20 |
| 終了ページ | 30 |
| ISSN | 0475-0071 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002308626 |