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Content-based assembly search: A step towards assembly reuse

Abhijit S. Deshmukh, Ashis Gopal Banerjee, Satyandra K. Gupta, Ram D. Sriram
2008 Computer-Aided Design  
The increased use of CAD systems by product development organizations has resulted in the creation of large databases of assemblies. This explosion of assembly data is likely to continue in the future. In many situations, text-based search alone may not be sufficient to search for assemblies and it may be desirable to search for assemblies based on the content of the assembly models. The ability to perform content-based searches on these databases is expected to help the designers in the
more » ... ng two ways. First, it can facilitate reuse of existing assembly designs, thereby reducing the design time. Second, a lot of useful design for manufacturing and assembly knowledge is implicitly embedded in existing assemblies. Therefore a capability to locate existing assemblies and examine them can be used as a learning tool by designers to learn from the existing assembly designs. This paper describes a system for performing content-based searches on assembly databases. We identify templates for comprehensive search definitions and describe algorithms to perform content-based searches for mechanical assemblies. We also illustrate capabilities of our system through several examples.
doi:10.1016/j.cad.2007.10.012 fatcat:fy6kf5qg5re65gyxuyfo2vl42u

Research in Automated Planning and Control for Micromanipulation

Ashis Gopal Banerjee, Satyandra K. Gupta
2013 IEEE Transactions on Automation Science and Engineering  
Banerjee et al.  ...  Banerjee et al. [48] and [49] incorporated the previous POMDP algorithm within a decoupled path planning framework to transport multiple objects simultaneously.  ... 
doi:10.1109/tase.2013.2260539 fatcat:eqtrdqj4ijappbjwabmfzxjd6m

A survey of CAD model simplification techniques for physics-based simulation applications

Atul Thakur, Ashis Gopal Banerjee, Satyandra K. Gupta
2009 Computer-Aided Design  
Automated CAD model simplification plays an important role in effectively utilizing physicsbased simulation during the product realization process. Currently a rich body of literature exists that describe many successful techniques for fully-automatic or semi-automatic simplification of CAD models for a wide variety of applications. The purpose of this paper is to compile a list of the techniques that are relevant for physics-based simulations problems and to characterize them based on their
more » ... ributes. We have classified them into the following four categories: techniques based on surface entity based operators, volume entity based operators, explicit feature based operators, and dimension reduction operators. This paper also presents the necessary background information in the CAD model representation to assist the new readers. We conclude the paper by outlining open research directions in this field.
doi:10.1016/j.cad.2008.11.009 fatcat:52wtq4yuvbhjpp25pkdekhlo2u

Approaching the Symbol Grounding Problem with Probabilistic Graphical Models

Stefanie Tellex, Thomas Kollar, Steven Dickerson, Matthew R. Walter, Ashis Gopal Banerjee, Seth Teller, Nicholas Roy
2011 The AI Magazine  
n order for robots to engage in dialog with human teammates, they must have the ability to map between words in the language and aspects of the external world. A solution to this symbol grounding problem (Harnad, 1990) would enable a robot to interpret commands such as "Drive over to receiving and pick up the tire pallet." In this article we describe several of our results that use probabilistic inference to address the symbol grounding problem. Our specific approach is to develop models that
more » ... ctor according to the linguistic structure of a command. We first describe an early result, a generative model that factors according to the sequential structure of language, and then discuss our new framework, generalized grounding graphs (G3). The G3 framework dynamically instantiates a probabilistic graphical model for a natural language input, enabling a mapping between words in language and concrete objects, places, paths and events in the external world. We report on corpus-based experiments where the robot is able to learn and use word meanings in three real-world tasks: indoor navigation, spatial language video retrieval, and mobile manipulation.
doi:10.1609/aimag.v32i4.2384 fatcat:o52l2szpfvaxfkiphy5q7uv7x4

Incorporating manufacturability considerations during design of injection molded multi-material objects

Ashis Gopal Banerjee, Xuejun Li, Greg Fowler, Satyandra K. Gupta
2007 Research in Engineering Design  
The presence of an already molded component during the second and subsequent molding stages makes multi-material injection molding different from traditional injection molding process. Therefore, designing multi-material molded objects requires addressing many additional manufacturability considerations. In this paper, we first present an approach to systematically identifying potential manufacturability problems that are unique to the multi-material molding processes and design rules to avoid
more » ... hese problems. Then we present a comprehensive manufacturability analysis approach that incorporates both the traditional single material molding rules as well as the specific rules that have been identified for multi-material molding. Our analysis shows that sometimes the traditional rules need to be suppressed or modified. Lastly, for each of the new manufacturability problem, this paper describes algorithms for automatically detecting potential occurrences and generating redesign suggestions. These algorithms have been implemented in a computer-aided manufacturability analysis system. The approach presented in this paper is applicable to multi-shot and over molding processes. We expect that the manufacturability analysis techniques presented in this paper will help in decreasing the product development time for the injection molded multi-material objects.
doi:10.1007/s00163-007-0027-9 fatcat:sg3b4e5rfrcgdox3c5po2iuwqq

A Step Towards Automated Design of Side Actions in Injection Molding of Complex Parts [chapter]

Ashis Gopal Banerjee, Satyandra K. Gupta
2006 Lecture Notes in Computer Science  
Side actions contribute to mold cost by resulting in an additional manufacturing and assembly cost as well as by increasing the molding cycle time. Therefore, generating shapes of side actions requires solving a complex geometric optimization problem. Different objective functions may be needed depending upon different molding scenarios (e.g., prototyping versus large production runs). Manually designing side actions is a challenging task and requires considerable expertise. Automated design of
more » ... side actions will significantly reduce mold design lead times. This paper describes algorithms for generating shapes of side actions to minimize a customizable molding cost function.
doi:10.1007/11802914_35 fatcat:ghp5q3sfabf2hhmstj4sxkh32q

Survey on indirect optical manipulation of cells, nucleic acids, and motor proteins

Ashis Gopal Banerjee, Sagar Chowdhury, Wolfgang Losert, Satyandra K. Gupta
2011 Journal of Biomedical Optics  
Optical tweezers have emerged as one of the most promising non-contact manipulation techniques for biological objects. Instead of direct laser exposure, more often than not, optically-trapped beads are attached to the ends or boundaries of the objects for translation, rotation, and stretching. This is referred to as indirect optical manipulation. In this paper, we utilize the concept of robotic gripping to explain the different experimental set-ups which are commonly used for indirect
more » ... on of cells, nucleic acids, and motor proteins. We also give an overview of the kinds of biological insights provided by this technique. We conclude by highlighting the trends across the experimental studies, and discussing challenges and promising directions in this domain of active current research.
doi:10.1117/1.3579200 pmid:21639562 fatcat:vyaavueasrcgdgxfrrmif2o6wa

Regression-based LP solver for chance-constrained finite horizon optimal control with nonconvex constraints

Ashis Gopal Banerjee, Masahiro Ono, Nicholas Roy, Brian C. Williams
2011 Proceedings of the 2011 American Control Conference  
Ashis Gopal Banerjee is a Postdoctoral Associate at MIT. Masahiro Ono is a Ph.D. student at MIT. hiro Nicholas Roy is an Associate professor at MIT. Brian C.  ... 
doi:10.1109/acc.2011.5990937 fatcat:dga7g5c72zdljkemcpxkdxr5vm

Real-Time Path Planning for Coordinated Transport of Multiple Particles Using Optical Tweezers

Ashis Gopal Banerjee, Sagar Chowdhury, Wolfgang Losert, Satyandra K. Gupta
2012 IEEE Transactions on Automation Science and Engineering  
Real-Time Path Planning for Coordinated Transport of Multiple Particles using Optical Tweezers Ashis Gopal Banerjee, Member, IEEE, Sagar Chowdhury, Wolfgang Losert, and Satyandra K.  ...  Banerjee is with the Computer Science and Artificial Intelligence Laboratory, Massachusetts Institute of Technology, Cambridge, MA, 02139 USA (e-mail: S. Chowdhury and S. K.  ... 
doi:10.1109/tase.2012.2200102 fatcat:6shvd5wqlvbzjjjmptygsx2eay

Comparing the Performance of Expert User Heuristics and an Integer Linear Program in Aircraft Carrier Deck Operations

Jason C. Ryan, Ashis Gopal Banerjee, Mary L. Cummings, Nicholas Roy
2014 IEEE Transactions on Cybernetics  
Planning operations across a number of domains can be considered as resource allocation problems with timing constraints. An unexplored instance of such a problem domain is the aircraft carrier flight deck, where, in current operations, replanning is done without the aid of any computerized decision support. Rather, veteran operators employ a set of experiencebased heuristics to quickly generate new operating schedules. These expert user heuristics are neither codified nor evaluated by the
more » ... d States Navy; they have grown solely from the convergent experiences of supervisory staff. As unmanned aerial vehicles (UAVs) are introduced in the aircraft carrier domain, these heuristics may require alterations due to differing capabilities. The inclusion of UAVs also allows for new opportunities for on-line planning and control, providing an alternative to the current heuristic-based replanning methodology. To investigate these issues formally, we have developed a decision support system for flight deck operations that utilizes a conventional integer linear program-based planning algorithm. In this system, a human operator sets both the goals and constraints for the algorithm, which then returns a proposed schedule for operator approval. As a part of validating this system, the performance of this collaborative human-automation planner was compared with that of the expert user heuristics over a set of test scenarios. The resulting analysis shows that human heuristics often outperform the plans produced by an optimization algorithm, but are also often more conservative. Index Terms-Decision support system, human supervisory control, human-automation interaction.
doi:10.1109/tcyb.2013.2271694 pmid:23934675 fatcat:ifxpayg3xneh3ozw7wlysgvwey

Page 787 of Journal of Polymer Science. Part C, Polymer Letters Vol. 13, Issue 12 [page]

1975 Journal of Polymer Science. Part C, Polymer Letters  
J Ghosh, P.: Activation of Bromine-Induced (Photo) Polymerization of Methyl Meth acrylate by Low Concentration of Some Additives, 439 , Banerjee, A. N., Mitra, P.  ...  . ¢ ashi, | and the Interaction with Cu(ID) lon of Copolymers of Maleic Acid with Thio phene or Furan, 161 See Tabushi, | Gallot, Y See Selb, J Gandini, A See Alvarez, R Gaylord, N. G., Deshpande, A.  ... 

Acknowledgement to Reviewers of Micromachines in 2019

Micromachines Editorial Office
2020 Micromachines  
, Ashis Bañón, Fermín Bao, Yinyin Barbetta, Andrea Barettin, Daniele Barille, Regis Barros, Michael Taynnan Barrot, Christine Barshtein, Gregory Bartlett, Michael D.  ...  Van Toan, Nguyen Vannini, Giorgio Vassant, Simon Vattikuti, Surya Veerendra Prabhakar Vázquez, Luis Vazquez, Rebeca Martinez Veerasikku Gopal, Deepagan Vegendla, Prasad Verona, Enrico  ... 
doi:10.3390/mi11010111 fatcat:3ll23477nzeqbnqijbu2cfcufi

Page 487 of Mathematical Reviews Vol. 26, Issue Index [page]

Mathematical Reviews  
(Siwan) 27 (1993), no. 1, 56-57. 54H25 Gupta, Gopal see Proceedings: Computer Science Conference, 94d:68007; 94d:68008 and 94d:68009 Gupta, J. R. (with Banerjee, Mihir B.; Shandil, R.  ...  (Summary) 94e:68069 68Q22 (68Q25) sen Gupta, Ashis see Sen Gupta, Ashis Gupta, B. L. (with Pudmavati) On the absolute Hausdorff summability of Fourier series. (Hindi.  ... 

Developing a Stochastic Dynamic Programming Framework for Optical Tweezer-Based Automated Particle Transport Operations

A.G. Banerjee, A. Pomerance, W. Losert, S.K. Gupta
2010 IEEE Transactions on Automation Science and Engineering  
Fig. 8 . 8 Planner performance comparison with (dashed lines) and without (solid lines) knowledge about the z-coordinates of the object centers Gopal Banerjee is with the Department of Mechanical Engineering  ...  Ashis Our aim is real-time motion planning for automated assembly using OT.  ... 
doi:10.1109/tase.2009.2026056 fatcat:acoxvpcjnncnpmycovawwp6opm

Technical Session Schedule

2021 2021 Innovations in Power and Advanced Computing Technologies (i-PACT)  
doi:10.1109/i-pact52855.2021.9696846 fatcat:x4os34tvsvb7hoxfvhprrkjdla
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