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Jsme International Journal Series C-mechanical Systems Machine Elements and Manufacturing最新文献

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Compensation and Control of Dither-Smoothed Nonlinearities 抖动平滑非线性的补偿与控制
Jsme International Journal Series C-mechanical Systems Machine Elements and Manufacturing Pub Date : 2006-06-15 DOI: 10.1299/JSMEC.49.512
K. Shyu, Yun-Yao Lee
{"title":"Compensation and Control of Dither-Smoothed Nonlinearities","authors":"K. Shyu, Yun-Yao Lee","doi":"10.1299/JSMEC.49.512","DOIUrl":"https://doi.org/10.1299/JSMEC.49.512","url":null,"abstract":"A novel approach to linearize nonlinearities commonly inherent in actuators is proposed in this paper. This approach solves the inverse of the nonlinearity without requiring its I/O relations as a one-on-one map, which is necessary for the current inverse-model method. By introducing the concept of the equivalent gain, the proposed method systematically finds the inverse model of the nonlinearity by solving a zero-finding problem. Discussions on the existence and uniqueness of the solution are given in this paper. A simulation example is presented to demonstrate how the task in finding the inverse of a complicated nonlinearity can be simplified by the proposed method. Experimental evaluations on a position servo system with conspicuous friction reveal that the dither-smoothed nonlinearities are still nonlinear, and compensating action like the proposed method is necessary for control systems using the dithering technology.","PeriodicalId":151961,"journal":{"name":"Jsme International Journal Series C-mechanical Systems Machine Elements and Manufacturing","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130391423","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}
引用次数: 8
Inkjet Printing Resolution Study for Multi-Material Rapid Prototyping 多材料快速成型的喷墨打印分辨率研究
Jsme International Journal Series C-mechanical Systems Machine Elements and Manufacturing Pub Date : 2006-06-15 DOI: 10.1299/JSMEC.49.353
M. Ibrahim, T. Otsubo, H. Narahara, H. Koresawa, Hiroshi Suzuki
{"title":"Inkjet Printing Resolution Study for Multi-Material Rapid Prototyping","authors":"M. Ibrahim, T. Otsubo, H. Narahara, H. Koresawa, Hiroshi Suzuki","doi":"10.1299/JSMEC.49.353","DOIUrl":"https://doi.org/10.1299/JSMEC.49.353","url":null,"abstract":"In addition to its application in media printing, inkjet printing is becoming an increasingly attractive option for the distribution and patterning of materials for a wide variety of applications. In this study a commercial inkjet printer was modified to study the resolution of fluid dot placement required to fabricate 3D multi-material patterns layer by layer. A Java-based computer program was developed to convert stereolithography (STL) data layer by layer, control ink cartridges individually and print ink with customized fluid dot placement arrangements. The study found that complement printing between nozzles which are 30µm in diameter and 144µm apart is essential to achieve a sufficiently dense 3D pattern. When printed with 36µm vertical spacing a layer thickness of 1.30µm is achievable, and when printing layer by layer, the thickness increases almost at a linear rate.","PeriodicalId":151961,"journal":{"name":"Jsme International Journal Series C-mechanical Systems Machine Elements and Manufacturing","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123005993","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}
引用次数: 32
Stability Analysis for Digital PD Control of Flexible Systems Including Damping 含阻尼柔性系统数字PD控制的稳定性分析
Jsme International Journal Series C-mechanical Systems Machine Elements and Manufacturing Pub Date : 2006-06-15 DOI: 10.1299/JSMEC.49.446
Nabeel H. AL-Salem, M. Fanni
{"title":"Stability Analysis for Digital PD Control of Flexible Systems Including Damping","authors":"Nabeel H. AL-Salem, M. Fanni","doi":"10.1299/JSMEC.49.446","DOIUrl":"https://doi.org/10.1299/JSMEC.49.446","url":null,"abstract":"In this work we extent our recent results on the stability of single-rigid/single-flexible mode system to cases involving damping. We present closed form analytical expressions that describe the boundaries of the stability regions for digital PD control systems. This is obtained using a newly adopted approach based on the critical stability constraints of Jury test. The considered system simulates many practical systems such as antenna, space shuttle, and robot arm. It is found that, the stability regions for damped flexible systems have three identifiable and distinguished topologies corresponding to three classes of damped system. The three classes are separated from each other by two surfaces in the three-dimension-space of the system-parameters. The stability region for the first class is almost a right triangle in the gain space where the third boundary, the hypotenuse, is described by the lowest root of a cubic equation. The stability region for the second class is clearly larger in size and the three roots of the cubic equation participate in defining the third boundary. In the third class, the stability region is further larger in size and the highest root of the cubic equation defines the third boundary. A peculiar situation is found where a stable system of the second class is possible with negative derivative gain. Numerical simulation is presented to verify this peculiar situation.","PeriodicalId":151961,"journal":{"name":"Jsme International Journal Series C-mechanical Systems Machine Elements and Manufacturing","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131311881","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}
引用次数: 0
Flight Control Study of an Virtual Insect by a Simulation 虚拟昆虫的飞行控制仿真研究
Jsme International Journal Series C-mechanical Systems Machine Elements and Manufacturing Pub Date : 2006-06-15 DOI: 10.1299/JSMEC.49.556
Futoshi Tanaka, T. Ohmi, S. Kuroda, K. Hirasawa
{"title":"Flight Control Study of an Virtual Insect by a Simulation","authors":"Futoshi Tanaka, T. Ohmi, S. Kuroda, K. Hirasawa","doi":"10.1299/JSMEC.49.556","DOIUrl":"https://doi.org/10.1299/JSMEC.49.556","url":null,"abstract":"In this paper, we show an approach to elucidate the free flight of an insect using a simulation. We modeled a fly, Drosophila, by using aerodynamics, body dynamics, and control theory. The modeled virtual insect performs free flight in virtual space generated by a computer. We simulated the free flight of a virtual insect having two dimensions and two degrees of freedom. The flight pass and flight velocity of the virtual insect during a free flight were calculated by Newton’s equations of motion. The aerodynamic force generated by the flapping motion of the virtual insect was estimated by using the blade element theory. An optimal regulator theory was used as a control law. The flight pass from the initial position to the target position and the wing motion was obtained from the results of the free flight simulation of the virtual insect. We can presume the wing motion of an insect in free flight by using the flight simulation of a virtual insect. These results have suggested that the approach based on the simulation is effective in elucidating the free flight of an insect.","PeriodicalId":151961,"journal":{"name":"Jsme International Journal Series C-mechanical Systems Machine Elements and Manufacturing","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121509930","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}
引用次数: 5
Study on Expansion Process of EDM Arc Plasma 电火花加工电弧等离子体膨胀工艺研究
Jsme International Journal Series C-mechanical Systems Machine Elements and Manufacturing Pub Date : 2006-06-15 DOI: 10.1299/JSMEC.49.600
W. Natsu, Mayumi Shimoyamada, M. Kunieda
{"title":"Study on Expansion Process of EDM Arc Plasma","authors":"W. Natsu, Mayumi Shimoyamada, M. Kunieda","doi":"10.1299/JSMEC.49.600","DOIUrl":"https://doi.org/10.1299/JSMEC.49.600","url":null,"abstract":"In order to understand the phenomena of electrical discharge machining (EDM), the characteristics of transition arc plasma in EDM were investigated. The arc plasma was directly observed with a high speed video camera. In addition, to learn more about arc plasma expansion, plasma temperature was measured by spectroscopy. The arc plasma temperature was obtained by measuring the radiant fluxes of two different wavelengths from the arc plasma and applying the line pair method. Furthermore, a new expansion model for EDM arc plasma was proposed based on the observations, and validated by comparing experimental and computed results of the discharge crater.","PeriodicalId":151961,"journal":{"name":"Jsme International Journal Series C-mechanical Systems Machine Elements and Manufacturing","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130333748","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}
引用次数: 59
Three-Dimensional Nanofabrication Utilizing Selective Etching of Silicon Induced by Focused Ion Beam Irradiation 聚焦离子束辐照诱导硅选择性蚀刻的三维纳米加工
Jsme International Journal Series C-mechanical Systems Machine Elements and Manufacturing Pub Date : 2006-06-15 DOI: 10.1299/JSMEC.49.583
N. Kawasegi, N. Morita, S. Yamada, N. Takano, T. Oyama, K. Ashida, J. Taniguchi, I. Miyamoto
{"title":"Three-Dimensional Nanofabrication Utilizing Selective Etching of Silicon Induced by Focused Ion Beam Irradiation","authors":"N. Kawasegi, N. Morita, S. Yamada, N. Takano, T. Oyama, K. Ashida, J. Taniguchi, I. Miyamoto","doi":"10.1299/JSMEC.49.583","DOIUrl":"https://doi.org/10.1299/JSMEC.49.583","url":null,"abstract":"A simple process of fabricating a three-dimensional nanostructure on a silicon surface was investigated in this study. The silicon surface area irradiated by focused ion beam (FIB) was selectively etched in HF, whereas the non-irradiated area was scarcely etched, and con-sequently, a concave nanostructure was fabricated on the irradiated area. To control the depth of the nanostructure, the depth dependence on ion irradiation parameters was investigated. As a result, it was found that the depth of the irradiated area can be controlled by changing ion irradiation parameters, such as dose and ion energy. Under a low-dose condition, the irradiated area was scarcely etched, due to the formation of an amorphous layer on the interior of silicon. Subsequently, it was etched in KOH to evaluate the mechanism of this phenomenon. In addition, the surface roughness dependence on ion irradiation parameters was investigated. Finally, three-dimensional nanostructures were fabricated on the basis of these results, suggesting that this method is a novel three-dimensional nanofabrication method.","PeriodicalId":151961,"journal":{"name":"Jsme International Journal Series C-mechanical Systems Machine Elements and Manufacturing","volume":"76 8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123334354","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}
引用次数: 22
Stabilization of Perturbed Linear Systems with Time-Varying Delays in States and Inputs 状态和输入时变时滞的摄动线性系统的镇定
Jsme International Journal Series C-mechanical Systems Machine Elements and Manufacturing Pub Date : 2006-06-15 DOI: 10.1299/JSMEC.49.455
Chih‐Chiang Cheng, Chih-Chin Wen, Jian-Liung Chen
{"title":"Stabilization of Perturbed Linear Systems with Time-Varying Delays in States and Inputs","authors":"Chih‐Chiang Cheng, Chih-Chin Wen, Jian-Liung Chen","doi":"10.1299/JSMEC.49.455","DOIUrl":"https://doi.org/10.1299/JSMEC.49.455","url":null,"abstract":"The design of state feedback controllers and observers are proposed in this paper for a class of multi-input-multi-output linear systems with uncertainties and time varying delays both in states and control inputs. By using Lyapunov stability theorem, a sufficient condition is found for computing the state feedback gains of controllers and the gains of observers in order to regulate the closed-loop systems in spite of the existence of parameters variations as well as delays. This sufficient condition contains two inequalities, one of which is linear matrix inequality (LMI), which can be solved by utilizing the computer’s software package. The globally asymptotic stability of the closed-loop system is guaranteed if the solution which satisfies the proposed sufficient condition exists. An application is given for demonstrating the feasibility of the proposed control method, whose performance is also compared to an existing sliding mode control scheme.","PeriodicalId":151961,"journal":{"name":"Jsme International Journal Series C-mechanical Systems Machine Elements and Manufacturing","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121216809","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}
引用次数: 1
New Measuring Method for Thermal Deviations Caused by Linear Axis Motion in Multi-Task Machine 多任务机床直线轴运动引起的热偏差测量新方法
Jsme International Journal Series C-mechanical Systems Machine Elements and Manufacturing Pub Date : 2006-06-15 DOI: 10.1299/JSMEC.49.316
S. Shimizu, Go Ooi, S. Yagyu
{"title":"New Measuring Method for Thermal Deviations Caused by Linear Axis Motion in Multi-Task Machine","authors":"S. Shimizu, Go Ooi, S. Yagyu","doi":"10.1299/JSMEC.49.316","DOIUrl":"https://doi.org/10.1299/JSMEC.49.316","url":null,"abstract":"Many multi-task machines have been developed recently because of demands for reduction of the number of machining processes. Therefore, in this study, the new measuring method of thermal deviations with the linear axis motion is devised for a multi-task machine. This method is possible to do the same measurement as the method standardized in ISO230-3. Using this measurement system, six thermal deviations with the reciprocating motion of the carriage are measured simultaneously on the actual multi-task machine with the general structure. From the results, we obtain the following conclusions. The method we proposed here has validity. The estimation of the thermal deformation mode is possible with synthetic evaluation of the measurement result from this measuring method.","PeriodicalId":151961,"journal":{"name":"Jsme International Journal Series C-mechanical Systems Machine Elements and Manufacturing","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124381612","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}
引用次数: 2
Development of a Machining Tester for Two Dimensional Machining Test under External Hydrostatic Pressure 外静水压力下二维加工试验机的研制
Jsme International Journal Series C-mechanical Systems Machine Elements and Manufacturing Pub Date : 2006-06-15 DOI: 10.1299/JSMEC.49.329
M. Yoshino, E. Higashi, K. Kawade
{"title":"Development of a Machining Tester for Two Dimensional Machining Test under External Hydrostatic Pressure","authors":"M. Yoshino, E. Higashi, K. Kawade","doi":"10.1299/JSMEC.49.329","DOIUrl":"https://doi.org/10.1299/JSMEC.49.329","url":null,"abstract":"This paper reports on a new machining device developed for experimental study on machining property of hard-brittle materials under external hydrostatic pressure. A new machining device was developed for two dimensional machining tests as well as in situ observation of a machining process by an optical microscope under hydrostatic pressure up to 400MPa. The device consists of four parts; a high pressure vessel, a pump system, a machining device installed in the chamber and an optical microscope. Detail of structure of the device is reported in the paper. Two dimensional machining tests of a soda glass plate were conducted using the device under four levels of pressure. Results of the machining tests is also reported.","PeriodicalId":151961,"journal":{"name":"Jsme International Journal Series C-mechanical Systems Machine Elements and Manufacturing","volume":"12367 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124494120","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}
引用次数: 3
Interactive System of Work Support in Consideration of Worker Competency 考虑员工胜任力的工作支持互动系统
Jsme International Journal Series C-mechanical Systems Machine Elements and Manufacturing Pub Date : 2006-06-15 DOI: 10.1299/JSMEC.49.576
T. Tateno
{"title":"Interactive System of Work Support in Consideration of Worker Competency","authors":"T. Tateno","doi":"10.1299/JSMEC.49.576","DOIUrl":"https://doi.org/10.1299/JSMEC.49.576","url":null,"abstract":"","PeriodicalId":151961,"journal":{"name":"Jsme International Journal Series C-mechanical Systems Machine Elements and Manufacturing","volume":"85 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121636063","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}
引用次数: 2
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