{"title":"Novel mechatronics design for a robotic fish","authors":"Jindong Liu, Ian Dukes, Huosheng Hu","doi":"10.1109/IROS.2005.1545283","DOIUrl":"https://doi.org/10.1109/IROS.2005.1545283","url":null,"abstract":"This paper presents a novel mechatronics design for a 3D swimming robotic fish, namely MT1 (Mechanical Tail) robotic fish. It has a novel tail structure which uses only one motor to generate fish-like swimming motion using C-bends tail shapes. This design enables MT1 to become the first small size robotic fish (<0.5m in length) and be able to dive over 3 meters deep in water. An effective control method with only 5 parameters is proposed to control its 3D swimming behaviours. Experimental results are presented to show the feasibility and good performance of the proposed control algorithms.","PeriodicalId":189219,"journal":{"name":"2005 IEEE/RSJ International Conference on Intelligent Robots and Systems","volume":"50 589 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126257203","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}
{"title":"Stiffness influence atlases of a novel flexure hinge-based parallel mechanism with large workspace","authors":"W. Dong, Z. Du, Lining Sun","doi":"10.1109/IROS.2005.1545078","DOIUrl":"https://doi.org/10.1109/IROS.2005.1545078","url":null,"abstract":"Parallel-structure flexure mechanisms are increasingly designed due to their superior characteristics. This paper explores a novel six degree-of-freedom large workspace flexure parallel mechanism based on the concept of wide-range flexure hinge, which can attain sub-micron scale accuracy over cubic centimeter motion range. The geometric dimensions of the flexure hinges utilized in this mechanism as passive joints will influence the system stiffness directly and other properties indirectly such as the workspace, load-carrying capacity, and driving-load capacity etc. In this paper, the stiffness model of individual flexure hinge is established firstly, and then the stiffness of the whole flexure mechanism is modeled via assembling stiffness matrices and formulating constraint equations. Based on the system stiffness model of the whole mechanism, the stiffness atlases' analysis is presented which provides theoretical principles for designing and developing this kind of flexure parallel mechanism in further. Finally, a 6-PSS large workspace flexure parallel mechanism prototype is proposed according to the analysis results, which will be utilized in the precision positioning.","PeriodicalId":189219,"journal":{"name":"2005 IEEE/RSJ International Conference on Intelligent Robots and Systems","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126354325","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}
K. Fukui, K. Nishikawa, S. Ikeo, E. Shintaku, Kentaro Takada, H. Takanobu, M. Honda, A. Takanishi
{"title":"Development of a talking robot with vocal cords and lips having human-like biological structures","authors":"K. Fukui, K. Nishikawa, S. Ikeo, E. Shintaku, Kentaro Takada, H. Takanobu, M. Honda, A. Takanishi","doi":"10.1109/IROS.2005.1545356","DOIUrl":"https://doi.org/10.1109/IROS.2005.1545356","url":null,"abstract":"We have developed a new talking robot, WT-5 (Waseda Talker No. 5), having novel vocal cords and lips based on human biological structures. The vocal cords are made from the thermoplastic rubber \"Septon\", available from Kuraray Co. Ltd, which has a similar elasticity to human tissue. The vocal cord model was constructed with a similar structure to the biological structure of the human vocal cords. The vocal cords vibrated like those of a human. The new lips were able to attain a large deformation in a similar manner to human lips, without the leakage of air. This allowed clear pronunciation of vowels. With these new mechanisms, the robot could reproduce human speech in a more biological manner and could produce voices closer to those of a human.","PeriodicalId":189219,"journal":{"name":"2005 IEEE/RSJ International Conference on Intelligent Robots and Systems","volume":"509 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123039497","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}
Changkyu Choi, Donggeon Kong, Sujin Lee, Kiyoung Park, Sun-Gi Hong, Hyoung-Ki Lee, S. Bang, Yongbeom Lee, Sang Ryong Kim
{"title":"Real-time audio-visual localization of user using microphone array and vision camera","authors":"Changkyu Choi, Donggeon Kong, Sujin Lee, Kiyoung Park, Sun-Gi Hong, Hyoung-Ki Lee, S. Bang, Yongbeom Lee, Sang Ryong Kim","doi":"10.1109/IROS.2005.1545030","DOIUrl":"https://doi.org/10.1109/IROS.2005.1545030","url":null,"abstract":"In home environments, demands for a robot to serve a user are on the increase, such as cleaning rooms, bringing something to the user, and so on. To achieve these tasks, it is essential for developing a natural way of human-robot interaction (HRI). One of the most natural ways is that the robot approaches the user to do some tasks after recognizing the user's call and localizing its position. In this case, user localization becomes a key technology. In this paper, we propose a novel audio visual user localization system. It consists of a microphone array with eight sensors and a video camera. Estimating calling direction is achieved by the spectral subtraction of the spatial spectra. In particular, a novel beam forming method is proposed to suppress the nonstationary audio noises where they always occur in a real world. Furthermore, a robust method for face detection is proposed to double check the user based on an Adaboost classifier. It is improved to reduce the false alarms remarkably through a new postprocessing on face candidates. Successful results in a real home environment show its efficacy and feasibility. The implementation issues, limitations, and their possible solutions are also discussed.","PeriodicalId":189219,"journal":{"name":"2005 IEEE/RSJ International Conference on Intelligent Robots and Systems","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123092721","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}
{"title":"Sensing characteristics of an optical three-axis tactile sensor mounted on a multi-fingered robotic hand","authors":"M. Ohka, Hiroaki Kobayashi, Y. Mitsuya","doi":"10.1109/IROS.2005.1545264","DOIUrl":"https://doi.org/10.1109/IROS.2005.1545264","url":null,"abstract":"To develop a new three-axis tactile sensor for mounting on multi-fingered robotic hands, in this work we optimize sensing elements on the basis of our previous works concerning optical three-axis tactile sensors with a flat sensing surface. The present tactile sensor is based on the principle of an optical waveguide-type tactile sensor, which is composed of an acrylic hemispherical dome, a light source, an array of rubber sensing elements, and a CCD camera. The sensing element of the present tactile sensor comprises one columnar feeler and eight conical feelers. The contact areas of the conical feelers, which maintain contact with the acrylic dome, detect the three-axis force applied to the tip of the sensing element. Normal and shearing forces are then calculated from integration and centroid displacement of the gray-scale value derived from the conical feeler's contacts. To evaluate the present tactile sensor, we have conducted a series of experiments using a y-z stage, a rotational stage and a force gauge, and have found that although the relationship between integrated gray-scale value and normal force depends on the latitude on the hemispherical surface, it is easy to modify the sensitivity according to the latitude, and that the centroid displacement of the gray-scale value is proportional to the shearing force. Finally, to verify the present tactile sensor, we performed a series of scanning tests using a robotic manipulator equipped with the present tactile sensor to have the manipulator scan surfaces of fine abrasive papers. Results show that the obtained shearing force increased with an increase in the particle diameter of aluminium dioxide contained in the abrasive paper, and decreased with an increase in the scanning velocity of the manipulator over the abrasive paper. Because these results are consistent with tribology, we conclude that the present tactile sensor has sufficient dynamic sensing capability to detect normal and shearing forces.","PeriodicalId":189219,"journal":{"name":"2005 IEEE/RSJ International Conference on Intelligent Robots and Systems","volume":"34 6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126089374","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}
{"title":"An example of parts handling and self-assembly using stable limit sets","authors":"T. Murphey, Jay Bernheisel, D. Choi, K. Lynch","doi":"10.1109/IROS.2005.1545576","DOIUrl":"https://doi.org/10.1109/IROS.2005.1545576","url":null,"abstract":"Throwing and catching parts, similar to vibratory agitation, promises to be a powerful manipulation technique, but is analytically complicated by equations of motion involving friction and impacts. However, one can show that some simple part manipulators exhibit limit set behavior, where the parts enter a set that is invariant under the mapping that corresponds to the throwing action. We show that by analyzing limit sets directly we can design parts and their environment so that part feeding or assembling naturally emerges from the dynamics. We include experiments validating both these approaches and a discussion of future work.","PeriodicalId":189219,"journal":{"name":"2005 IEEE/RSJ International Conference on Intelligent Robots and Systems","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114087360","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}
{"title":"A tracking controller for motion coordination of multiple mobile robots","authors":"Jinyan Shao, G. Xie, Junzhi Yu, Long Wang","doi":"10.1109/IROS.2005.1545164","DOIUrl":"https://doi.org/10.1109/IROS.2005.1545164","url":null,"abstract":"This paper presents a new method for controlling a group of nonholonomic mobile robots to achieve predetermined formations without using global knowledge. Based on the dynamic leader-follower model, a reactive tracking controller is proposed to make each following robot maintain a desired pose to its leader, and the stability property of this controller is discussed using Lyapunov theory. By employing such controllers, the N-robot formation control problem can be decomposed into decentralized tracking problems between N-l followers and designated leaders. Additionally, graph theory is introduced to formalize general formation patterns in a simple but effective way and two types of switching between these formations are also proposed. Numerical simulations and physical robots experiments show the effectiveness of our approach.","PeriodicalId":189219,"journal":{"name":"2005 IEEE/RSJ International Conference on Intelligent Robots and Systems","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121100539","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}
{"title":"Adaptive tuning of the sampling domain for dynamic-domain RRTs","authors":"L. Jaillet, A. Yershova, S. LaValle, T. Siméon","doi":"10.1109/IROS.2005.1545607","DOIUrl":"https://doi.org/10.1109/IROS.2005.1545607","url":null,"abstract":"Sampling based planners have become increasingly efficient in solving the problems of classical motion planning and its applications. In particular, techniques based on the rapidly-exploring random trees (RRTs) have generated highly successful single-query planners. Recently, a variant of this planner called dynamic-domain RRT was introduced by Yershova et al. (2005). It relies on a new sampling scheme that improves the performance of the RRT approach on many motion planning problems. One of the drawbacks of this method is that it introduces a new parameter that requires careful tuning. In this paper we analyze the influence of this parameter and propose a new variant of the dynamic-domain RRT, which iteratively adapts the sampling domain for the Voronoi region of each node during the search process. This allows automatic tuning of the parameter and significantly increases the robustness of the algorithm. The resulting variant of the algorithm has been tested on several path planning problems.","PeriodicalId":189219,"journal":{"name":"2005 IEEE/RSJ International Conference on Intelligent Robots and Systems","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115279486","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}
{"title":"Stability analysis of a walk of a biped with control of the ZMP","authors":"D. Djoudi, C. Chevallereau","doi":"10.1109/IROS.2005.1545239","DOIUrl":"https://doi.org/10.1109/IROS.2005.1545239","url":null,"abstract":"The objective of this study is to analyze the stability of control strategy for a planar biped robot. The avoidance of unexpected rotation of the supporting foot is treated via the control of the zero moment point or ZMP. When the task is a simultaneous control of the joints and of the ZMP, the system becomes under-actuated in the sense that there is less inputs than the number of outputs. The control law is defined in such a way that only the geometric evolution of the biped configuration is controlled, but not the temporal evolution. The temporal evolution during the geometric tracking is completely defined and can be analyzed through the study of a model with one degree of freedom. Simple conditions, which guarantee the existence of a cyclic motion and the convergence towards this motion, are deduced.","PeriodicalId":189219,"journal":{"name":"2005 IEEE/RSJ International Conference on Intelligent Robots and Systems","volume":"130 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115637837","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}
Jan Hoffmann, Michael Spranger, D. Goehring, Matthias Jüngel
{"title":"Making use of what you don't see: negative information in Markov localization","authors":"Jan Hoffmann, Michael Spranger, D. Goehring, Matthias Jüngel","doi":"10.1109/IROS.2005.1545087","DOIUrl":"https://doi.org/10.1109/IROS.2005.1545087","url":null,"abstract":"This paper explores how the absence of an expected sensor reading can be used to improve Markov localization. This negative information usually is not being used in localization, because it yields less information than positive information (i.e. sensing a landmark), and a sensor often fails to detect a landmark, even if it falls within its sensing range. We address these difficulties by carefully modeling the sensor to avoid false negatives. This can also be thought of as adding an additional sensor that detects the absence of an expected landmark. We show how such modeling is done and how it is integrated into Markov localization. In real world experiments, we demonstrate that a robot is able to localize in positions where otherwise it could not and quantify our findings using the entropy of the particle distribution. Exploiting negative information leads to a greatly improved localization performance and reactivity.","PeriodicalId":189219,"journal":{"name":"2005 IEEE/RSJ International Conference on Intelligent Robots and Systems","volume":"105 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116680531","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}