Mechanical Patents (Class 703/7)
  • Patent number: 7774177
    Abstract: Techniques are provided for controlling an exoskeleton actuator at a joint of a human-exoskeleton system by receiving system parameters for the human-exoskeleton system, receiving generalized coordinates for the human-exoskeleton system, and determining an equivalent joint torque for the exoskeleton actuator to compensate for a selected force. While providing partial or complete compensation of selected gravitational and external forces, one embodiment of the present invention mitigates the amount of interference between voluntary control and assist control, thereby allowing humans to quickly humans adapt to an exoskeleton system.
    Type: Grant
    Filed: March 30, 2006
    Date of Patent: August 10, 2010
    Assignee: Honda Motor Co., Ltd.
    Inventor: Behzad Dariush
  • Patent number: 7769571
    Abstract: An improved constraint approach reduces the energy drift rate to acceptable levels. In an embodiment of this approach, massively parallel constrained velocity Verlet NVE (constant particle number, constant volume, constant energy) MD simulations can be run using single precision arithmetic with very low energy drift (e.g., ˜1 Kelvin per microsecond simulated time) using large timesteps (e.g., 2.5 fs) for typical systems and MD force fields.
    Type: Grant
    Filed: October 1, 2007
    Date of Patent: August 3, 2010
    Assignee: D. E. Shaw Research, LLC
    Inventor: Kevin J. Bowers
  • Publication number: 20100185312
    Abstract: A system for evaluating a manufacturability of a casting design. The system includes at least one of a geometry analyzer, a casting evaluation tool, a residual stress evaluation tool, and a machining evaluation tool. The geometry analyzer analyzes a geometric design of the casting design to determine its geometric design-ability, the casting evaluation tool evaluates the casting design to determine its cast-ability, the residual stress evaluation tool evaluates the casting design to determine its heat treat-ability, and the machining evaluation tool evaluates the casting design to determine a machine-ability of the casting design. If the casting design is determined as not geometrically design-able, not cast-able, not heat treat-able, or not machine-able by the geometry analyzer, the casting evaluation tool, the residual stress evaluation tool, or the machining evaluation tool, respectively, then modifications to the casting design are recommended to optimize the casting design for manufacturing.
    Type: Application
    Filed: January 20, 2009
    Publication date: July 22, 2010
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
    Inventors: Qigui Wang, Yucong Wang
  • Patent number: 7755620
    Abstract: A method of manipulating a three-dimensional virtual building block model by means of two-dimensional cursor movements, the virtual building block model including a plurality of virtual building blocks each including a number of connection elements for connecting the virtual building block with another virtual building block according to a set of connection rules, the method comprising positioning by means of cursor movements in a computer display area representing a two-dimensional projection of said model, a two-dimensional projection of a first virtual building block to be connected to the structure, resulting in a two-dimensional position; determining, from the two-dimensional position, a number of three-dimensional candidate positions of the first virtual building block in the three-dimensional coordinate system; selecting one of said candidate positions based on the connection rules and a predetermined set of position rating rules; and connecting the first building block to said structure at the selecte
    Type: Grant
    Filed: May 13, 2004
    Date of Patent: July 13, 2010
    Assignee: Interlego AG
    Inventors: Ronny Scherer, Olga Timcenko, Naomi Clark, Peter Acker
  • Publication number: 20100174515
    Abstract: A novel procedure is disclosed, that can be incorporated into Finite Element Analysis (FEA) or other similar analysis techniques, to obtain the steady state temperature distribution in a coupled transient heat transfer analysis rapidly as well as accurately. A scale factor is used to reduce the thermal inertia per unit volume (specific heat capacity) in regions of steady state temperature distribution, thereby hastening the achievement of steady state. An application of this procedure to estimate steady state temperature distributions within cutting tools, and the estimation of cutting tool wear based on the obtained steady state temperature distributions is shown as an example.
    Type: Application
    Filed: December 21, 2009
    Publication date: July 8, 2010
    Inventors: Viswanathan Madhavan, Amit Deshpande
  • Publication number: 20100174509
    Abstract: A method for determining a suitable configuration for an elevator system for a building that includes acquiring building related information and passenger use information. Elevator system performance requirements based on elevator system passenger numbers are selected based on this information followed by selecting a set of elevator system characteristic variables that are desired to be at optimal values which are processed along with the information and performance requirements to provide an optimal solution.
    Type: Application
    Filed: May 21, 2007
    Publication date: July 8, 2010
    Applicant: OTIS ELEVATOR COMPANY
    Inventors: Arvind U. Raghunathan, Richard K. Pulling, Mauro J. Atalla, Theresa M. Christy, Vipin Gopal, Arthur C. Hsu
  • Patent number: 7752021
    Abstract: A method of controlling hydraulic pressure to a torque converter is provided. The method includes: determining a slip error from a target slip value and a measured slip; integrating said slip error; determining a state space feedback control matrix for said measured slip; determining a state space feedback control matrix for said integrated slip error; and controlling pressure based on said state space feedback control matrix for said measured slip and said state space feedback control matrix for said integrated slip error.
    Type: Grant
    Filed: September 1, 2006
    Date of Patent: July 6, 2010
    Inventors: Vincent Holtz, Maxence De Dreuille, Marc Rambert
  • Publication number: 20100169062
    Abstract: A method and apparatus for describing the statistical orientation distribution of nonspherical particles in a simulation of a process wherein a mold cavity is filled with a suspension that contains a large number of nonspherical particles. The method and apparatus may be applied to the analysis of an injection molding process for producing a fiber reinforced molded polymer component or of a metal casting process for producing a fiber reinforced metal product. The results of these analyses may be used to determine tension and warping aspects of the component, and to optimize the process conditions used in the production process.
    Type: Application
    Filed: December 21, 2009
    Publication date: July 1, 2010
    Inventors: Joachim Linn, Matthias Moog
  • Patent number: 7747421
    Abstract: To model head assignments for a multihead composite material application machine having a set of heads, a ply geometry for a composite part is received and a configuration for the multihead composite material application machine is received. In addition, a constellation of head locations is generated in response to the ply geometry and the configuration for the multihead composite material application machine. Furthermore, a head location of the constellation of head locations is assigned to a corresponding head of the set of heads and a graphical model of the multihead composite material application machine applying the composite material upon the composite part is generated in response to the assigned head locations.
    Type: Grant
    Filed: December 23, 2005
    Date of Patent: June 29, 2010
    Assignee: The Boeing Company
    Inventors: Wei-Pai Tang, Timothy F. Su
  • Patent number: 7747418
    Abstract: The invention relates to a computer-aided process of dental bar design for the purpose of fabricating removable implant-based dental restorations. The aim of the invention is to improve and automate the present dental restoration design process, which is very labor intensive and requires a lot of artistic work on the part of a dentist. The invention includes the developments of several algorithms and their integration into a computer-aided system to process the gingival and related data scanned from a patient's mouth and output a CAD model for fabricating the actual dental bar. Software has been developed to implement the inventive process.
    Type: Grant
    Filed: December 8, 2006
    Date of Patent: June 29, 2010
    Inventors: Ming C. Leu, Amit Gawate
  • Patent number: 7742904
    Abstract: A method for simulating a gas turbine including the steps of: sensing values of a plurality of first operating parameters of an actual gas turbine; applying the sensed values of the first operating parameters to a model of the gas turbine, wherein the model generates a plurality of predicted second operating parameters; determining difference values between the predicted second operating parameters and corresponding sensed second operating parameters of the actual gas turbine; modifying the difference values based on tuning factors generated by a Kalman filter gain matrix during operation of the gas turbine, and using the adjusted difference values to adjust the model of the gas turbine. The method may further comprise generating the tuning factors by applying to the model the sensed values of the plurality of first operating parameters and perturbated values of the adjusted different values to determine optimal tuning factors.
    Type: Grant
    Filed: September 27, 2005
    Date of Patent: June 22, 2010
    Assignee: General Electric Company
    Inventors: Timothy Andrew Healy, Randy Scott Rosson
  • Publication number: 20100153073
    Abstract: A simulation apparatus includes a simulation management unit for designating an elapsed time point, a robot operation calculation unit for causing the operation program to be executed to a designated elapsed time point to determine the operating position of the robot at the designated elapsed time point, a machine tool operation calculation unit for sequentially determining the operating position of the machine tool while at the same time executing the machining program continuously, and a machine tool operation storage unit for storing the determined operating position of the machine tool in correspondence with the elapsed time point each time a unit time elapses. The simulation management unit displays three-dimensional models of the robot and the machine tool on a display unit based on the operating positions of the robot and the machine tool at the designated elapsed time point acquired from the robot operation calculation unit and the machine tool operation calculation unit.
    Type: Application
    Filed: November 24, 2009
    Publication date: June 17, 2010
    Applicant: FANUC LTD
    Inventors: Yoshiharu NAGATSUKA, Kozo INOUE
  • Publication number: 20100153080
    Abstract: An embodiment of a method for lifespan modeling for a turbine engine component includes determining a design-phase model of the lifespan of an turbine engine component; fusing the design-phase model with sensor data collected during operation of the turbine engine component to produce an updated model of the lifespan of the turbine engine component; and fusing the updated model with data collected during an inspection of the turbine engine component to produce an overall model of the lifespan of the turbine engine component. Systems for lifespan modeling for a turbine engine component are also provided.
    Type: Application
    Filed: December 12, 2008
    Publication date: June 17, 2010
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Khan Mohamed Khirullah Genghis Khan, Mohamed Ahmed Ali, Ali Osman Ayhan, Ajay Kumar Behera, Anne Marie Isburgh, Vinay Bhaskar Jammu, John Joseph Madelone, JR., Omprakash Velagandula
  • Patent number: 7739059
    Abstract: A method, system, and computer program product for calculating the residual stress equilibrium of two elastoplastic cylinders coldworked by expansion to obtain interference fit. The deformation state due to an internal expansion load applied to an inner cylinder that will result in interference of the inner cylinder with the outer cylinder can be calculated. The deformation state due to an unloading of the internal expansion load that will result in assembly of the inner cylinder and the outer cylinder can be calculated. The residual stresses, residual displacement and residual strains in the inner cylinder and the outer cylinder, whether they are eventually interference fitted or not, can all be calculated and recorded.
    Type: Grant
    Filed: July 16, 2007
    Date of Patent: June 15, 2010
    Assignee: Airbus France
    Inventors: Stephane Bianco, Romain Canivenc, Marc Sartor
  • Publication number: 20100145669
    Abstract: A firearm shooting simulator includes an image capturing device fitted to a firearm and configured to capture at least one image of a target, once activated. The system further includes a processor which is configured to determine any variance between a centre point of the image captured and a point on the target sighted by the firearm when the image is captured. This is achieved by sighting the firearm at a particular point on the target and programming the processor with the location of this sighted point. Once the processor is aware of which point is sighted by the firearm, the image is captured and the processor determines a centre point of the image captured.
    Type: Application
    Filed: February 22, 2008
    Publication date: June 10, 2010
    Applicant: Christian Emmanuel NORDEN
    Inventors: Christian Emmanuel Norden, Alan Trevor Brown
  • Patent number: 7734559
    Abstract: An improvement in a computer-implemented rule processing method that provides conflict or selection advice to help guide a user achieve satisfiability of a business or engineering rule represented by a zero-suppressed binary decision diagram (ZDD) rule model. The improvement comprises obtaining at least one Exclude ZDD rule component from the ZDD rule model, identifying covers within the Exclude ZDD rule component, removing covers identified in the identifying step thereby to produce abridged Exclude ZDD rule component, determining satisfiability of the rule model utilizing the abridged Exclude ZDD component, and utilizing results of the determining step during automated decision support to help guide the user to attain satisfiability of the rule. An apparatus that implements the aforementioned method is also disclosed.
    Type: Grant
    Filed: September 27, 2006
    Date of Patent: June 8, 2010
    Inventors: David L. Huelsman, Douglas M. Mair
  • Patent number: 7734450
    Abstract: A region for which nonlinear analysis should be carried out is extracted and welding deformation of only the extracted region is computed by nonlinear analysis. Specifically, the displacement and reaction force at the limit surface are computed by linear analysis of the object to be welded, the reaction force at the limit surface is computed by nonlinear analysis of the region for which nonlinear analysis is necessary, an amount of correction of the displacement at the limit surface is computed and the above processing is repeated when it is judged that a difference between the two reaction forces is larger than a predetermined value, and welding deformation of the object to be welded is computed based on the computed displacement if it is judged that the difference between the reaction forces is smaller than the predetermined value.
    Type: Grant
    Filed: March 22, 2005
    Date of Patent: June 8, 2010
    Assignee: Osaka Industrial Promotion Organization
    Inventors: Hidekazu Murakawa, Hisashi Serizawa
  • Publication number: 20100138163
    Abstract: The subject matter described herein includes methods, systems, and computer readable media for monitored application of mechanical force to samples using acoustic energy and mechanical parameter value extraction using mechanical response models. One aspect of the subject matter described herein includes a method for determining mechanical property parameters of a sample. The method includes applying acoustic energy to a sample to apply a mechanical force to the sample. The method further includes measuring a response by the sample during the application of the acoustic energy to determine a value for a first mechanical property parameter of the sample. The method further includes measuring a recovery response of the sample following cessation of the application of the acoustic energy to determine a value for at least one second mechanical property parameter of the sample.
    Type: Application
    Filed: October 28, 2009
    Publication date: June 3, 2010
    Inventors: Caterina Gallippi, Olgha Davis, F. William Mauldin, JR., Elizabeth Loboa, Mansoor Haider
  • Patent number: 7729809
    Abstract: Systems, methods, and program product to calculate global energy utility targets and to model and determine an optimal solution for a non-thermodynamically constrained process or cluster of processes subject to non-thermodynamic constraints under all possible process changes and streams specific minimum temperature approaches, are provided. An exemplary system can utilize thermodynamic constraints exhibited in stream-specific minimum temperature approach values ?Tmini as optimization parameters, in addition to other process conditions degrees of freedom including the addition of new waste heat carrier streams to target for minimizing energy consumption of the non-thermodynamic constrained waste heat recovery problem and to identify the optimal operating conditions that result in desired minimum energy consumption subject to the non-thermodynamic constraints.
    Type: Grant
    Filed: October 8, 2009
    Date of Patent: June 1, 2010
    Assignee: Saudi Arabian Oil Company
    Inventor: Mahmoud Bahy Noureldin
  • Publication number: 20100131256
    Abstract: Each spot weld in a structure is represented by a cluster of at least one solid element in a finite element analysis model of the structure. Each spot weld is used for tying together two parts. Each of the two parts are generally represented or modeled as a number of two-dimension shell elements. Since the tie-connection between the spot weld and the two parts can be located arbitrarily within the respective part, the shell elements representing the two parts do not have to be aligned in space. The only requirement is the two shell elements must be overlapped each other such that the spot weld can tie the two shell elements (i.e., one from each part) together. A spot weld failure criterion used for determining failure including shear and axial stresses acted on the spot weld, shell element size and spot weld location sensitivity scale factors and strain rate effect.
    Type: Application
    Filed: November 26, 2008
    Publication date: May 27, 2010
    Applicant: LIVERMORE SOFTWARE TECHNOLOGY CORPORATION
    Inventor: John O. Hallquist
  • Patent number: 7725299
    Abstract: Techniques are presented for a multi-tier distributed frame work for mass configuration of products by design and synthesis. Products are represented as components having hierarchical relationships with one another. The components include form information, function information, behavioral information, and constraint information. Components may be created from scratch or retrieved from a plurality of sources over a network. In some embodiments, the components may include optimization constraints and derived from other components to meet the optimization constraints.
    Type: Grant
    Filed: February 28, 2005
    Date of Patent: May 25, 2010
    Assignee: Purdue Research Foundation
    Inventors: Karthnik Ramani, Srikanth Devanathan, Jayanti Subramaniam, Robert Thomas Brent Cunningham, Christopher Peters
  • Patent number: 7725303
    Abstract: Method and device for checking logical software engines for commanding railway plants, particularly station plants, include at least a computer with at least a central processing unit and at least a memory for loading and executing programs, a logical engine for commanding a plant, particularly a station plant, being loaded or loadable in said memory for its execution, which plant comprises a plurality of operating units for actuating and/or detection and/or measurement and/or signalling, so-called wayside equipments, which units are provided for receiving command signals and for transmitting control signals about the operating condition, and which logical software engine reads control signals given by the operating units for actuating and/or detection and/or measurement and/or signalling and its processes command signals of said operating units based on an operation protocol of the plant itself.
    Type: Grant
    Filed: October 16, 2003
    Date of Patent: May 25, 2010
    Assignee: Alstom Ferroviaria S.p.A.
    Inventor: Francesco Tramontana
  • Publication number: 20100122451
    Abstract: A process for simulating and assembling flexible parts includes creating an ideal path between first and second planes and placing a virtual rigid envelope around the ideal path, and possibly tubular extensions beyond the path. A virtual flexible part is marked with reference features and pulled through the virtual rigid envelope, such that the path of the virtual flexible part is constrained but may rotate. Removing the virtual rigid envelope allows the virtual flexible part to relax, causing it to move to its lowest energy state. Zero-twist end conditions on the virtual flexible part are marked, corresponding to the intersection of the reference features with the planes. Identification marks are placed on a real flexible part, corresponding to the reference strips on the virtual flexible part. The real flexible part may then be assembled by aligning zero-twist marks on mating features to the identification marks on the real flexible part.
    Type: Application
    Filed: November 14, 2008
    Publication date: May 20, 2010
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
    Inventors: Wuhua Yang, Robert Bruce Tilove, Richard A. Knoth
  • Patent number: 7720650
    Abstract: A synchronous drive apparatus includes first and a second rotors. The rotors have multiple teeth for engaging sections of an elongate drive structure. A rotary load assembly couples to the second rotor. The elongate drive structure engages about the rotors. The first rotor drives and the second rotor is driven by the elongate drive structure. One of the rotors has a non-circular profile having at least two protruding portions alternating with receding portions. The rotary load assembly presents a periodic fluctuating load torque when driven in rotation. The angular positions of the protruding and receding portions of the non-circular profile relative to the angular position of the second rotor, and the magnitude of the eccentricity of the non-circular profile, are such that the non-circular profile applies to the second rotor an opposing fluctuating corrective torque which reduces or cancels the fluctuating load torque of the rotary load assembly.
    Type: Grant
    Filed: November 19, 2007
    Date of Patent: May 18, 2010
    Assignee: Litens Automotive
    Inventor: Witold Gajewski
  • Publication number: 20100121473
    Abstract: A system and method for optimizing a process for refining lignocellulosic granular matter such as wood chips use a predictive model including a simulation model based on relations involving a plurality of matter properties characterizing the matter such as moisture content, density, light reflection or granular matter size, refining process operating parameters such as transfer screw speed, dilution flow, hydraulic pressure, plate gaps, or retention delays, at least one output controlled to a target such as primary motor load or pulp freeness, and at least one uncontrolled output such as specific energy consumption, energy split, long fibers, fines and shives. An adaptor is fed with measured values of matter properties and measured values of controlled and uncontrolled outputs, to adapt the simulation model accordingly. An optimizer generates a value of the target according to a predetermined condition on a predicted uncontrolled output parameter and to one or more process constraints.
    Type: Application
    Filed: May 2, 2008
    Publication date: May 13, 2010
    Applicant: Centre de recherche industrielle du Québec
    Inventors: Feng Ding, Llich Lama, Richard Gagnon, Claude Lejeune
  • Publication number: 20100115951
    Abstract: The present invention relates to a group of wind power plants for positioning in approximately the same wind climate, comprising at least a first and at least a second wind power plant, where the first wind power plant exhibits maximised power output within a first interval of wind speeds, and the second wind power plant is designed to exhibit maximised power output within a second interval of wind speeds which is different from and starting from lower wind speeds than the first wind speed interval to the effect that the total power output of the group of wind power plants is increased at lower wind speeds. Moreover, the invention relates to a method of designing a group of wind power plants in accordance with the above. This can be accomplished eg by designing the supplementary wind power plant(s) with a larger rotor area and with a lower cut-out wind speed or, alternatively, by using a wind power plant without power-regulating means.
    Type: Application
    Filed: April 22, 2008
    Publication date: May 13, 2010
    Applicant: LM GLASFIBER A/S
    Inventor: Bernt Ebbe Pedersen
  • Publication number: 20100121627
    Abstract: A method of preparation of reference data for measuring the profile of a patterned structure for use in control of a manufacturing process, the method including: providing a model for generating profiles based on the manufacturing process; generating the profiles by simulation of the manufacturing process; and preparing diffraction signal reference data corresponding to the generated profiles.
    Type: Application
    Filed: November 24, 2009
    Publication date: May 13, 2010
    Applicant: NOVA MEASURING INSTRUMENTS LTD. of Weizmann Scientific Park
    Inventors: Moshe Finarov, Boaz Brill
  • Patent number: 7716027
    Abstract: A simulation condition input apparatus inputs information required for simulation analysis on a system including plural element members. The apparatus includes a display unit, a specifying unit and an input unit. The display unit displays the plural element members on a screen with geometrical shapes corresponding to the element members. The specifying unit specifies a contact portion between at least one set of the element members, which is an information input target, on the screen of the display unit. The input unit displays a new window screen and inputs information about a contact state of the contact portion specified by the specifying unit.
    Type: Grant
    Filed: November 15, 2006
    Date of Patent: May 11, 2010
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Tomoyuki Ito, Kazuki Inami, Hirokazu Mukai, Hideki Okamoto
  • Patent number: 7716025
    Abstract: A system and method for configuring a condensing unit for a cooling system includes inputting one of a cooling system characteristic, a condensing unit characteristic and a compressor characteristic for the cooling system, applying embedded design rules and accessing a condensing unit database of component attributes and their relationships. A base condensing unit is determined based on the one of a cooling system characteristic, a condensing unit characteristic and a compressor characteristic for the cooling system. The method further includes selecting various accessories of the condensing unit for customizing the base condensing unit based on the particular application.
    Type: Grant
    Filed: June 11, 2004
    Date of Patent: May 11, 2010
    Assignee: Emerson Climate Technologies, Inc.
    Inventors: Vijay Bahel, Thomas E. Crone, Deborah L. Monnin, Altaf Hossain
  • Patent number: 7716021
    Abstract: A design process for varying hole locations or sizes or both in an ion beam grid includes identifying a control grid to be modified; obtaining a change factor for the grid pattern; and using the change factor to generate a new grid pattern. The change factor is one or both of a hole location change factor or a hole diameter change factor. Also included is an ion beam grid having the characteristic of hole locations or sizes or both defined by a change factor modification of control grid hole locations or sizes or both.
    Type: Grant
    Filed: March 31, 2006
    Date of Patent: May 11, 2010
    Assignee: Veeco Instruments, Inc.
    Inventors: Ikuya Kameyama, Daniel E. Siegfried
  • Patent number: 7715999
    Abstract: A surface texture measuring instrument includes: a movement-estimating unit for estimating a movement condition of a drive mechanism based on a scanning vector command issued by a scanning vector commander to calculate an estimated operation state quantity; and a correction-calculating unit for correcting a detection value of a drive sensor in accordance with the estimated operation state quantity calculated by the movement-estimating unit. The movement-estimating unit includes: a nominal-model setting unit in which a nominal model representing signal transfer function of the scanning vector command from the issuance of the scanning vector command to a reflection on a movement position of the scanning probe is stored.
    Type: Grant
    Filed: August 1, 2008
    Date of Patent: May 11, 2010
    Assignee: Mitutoyo Corporation
    Inventor: Shingo Kiyotani
  • Patent number: 7711527
    Abstract: A mechanism for translating objects between applications that use different formats is described. As described, a source object is generated using a source application. The source object is then translated to a target object in a target application. The target application having a format that is not supported by the source application. A first modification, which is not supported by the source application, is then performed to the target object. A second modification is also performed to the source object in the source application. Based on the modifications, the target object in the target application is revised to reflect the second modification to the source object without removing the first modification to the target object.
    Type: Grant
    Filed: January 7, 2005
    Date of Patent: May 4, 2010
    Assignee: Autodesk, Inc
    Inventors: Stewart Sabadell, John Hutchinson
  • Patent number: 7707011
    Abstract: A method is described for establishing load limits for pipe connections to a turbine casing including the steps of: identifying a plurality of the pipe connections as key pipe load connections; developing transfer functions to model deformation of the casing based on loads applied to the key pipe connections; establishing individual load limits for each of the key pipe connections in the group by optimizing solutions to the transfer functions, and establishing a cumulative load limit for the group of key pipe load connections by optimizing solutions to the transfer functions.
    Type: Grant
    Filed: December 12, 2002
    Date of Patent: April 27, 2010
    Assignee: General Electric Company
    Inventors: Steven Sebastian Burdgick, Gene David Palmer
  • Patent number: 7702494
    Abstract: A system, method and software product for prescribing rigid body in finite element analysis is described. According to one aspect, user defines a rigid body orientation time history based on a variety of schemes including, but not limited to, direction cosine, orientation angles, Euler parameters, Rodriguez parameters, and Caley-Klein parameters. The unique combination in one of the schemes is converted to direction cosine time histories first. The direction cosine matrix can then be interpolated from either the defined or the converted direction cosine time history at each solution cycle. The time derivative of the direction cosine matrix and the resulting angular velocity matrix are calculated. The solution for the equation of motions is obtained using calculated angular velocity for each solution cycle until the simulation ends. According to another aspect, the present invention interpolates user specified rigid body orientations time history in several schemes including, piecewise linear, cubic spline.
    Type: Grant
    Filed: July 18, 2006
    Date of Patent: April 20, 2010
    Assignee: Livermore Software Technology Corporation
    Inventor: Todd Patrick Slavik
  • Patent number: 7702491
    Abstract: A method is provided for application of part flow model for a programmable logic controller logical verification system. The method includes the steps of constructing a part flow model, determining whether the part flow model is acceptable, and using the part flow model to test PLC code to build a manufacturing line.
    Type: Grant
    Filed: September 28, 2001
    Date of Patent: April 20, 2010
    Assignee: Ford Global Technologies, LLC
    Inventors: Joseph G. Walacavage, Jim D. Coburn
  • Patent number: 7702493
    Abstract: A method for quality assurance of screw joint tightening results when tightening a screw joint to a needed pretension condition (FN) by means of a torque delivering power tool, wherein one or more simulation procedures of a screw joint tightening process via a specific algorithm aiming at the needed pretension condition (FN) by using programmed data relating to the screw joint geometry, expected frictional conditions, power tool characteristics, a tightening strategy and suitable tightening parameter values, thereby arriving at a simulated pretension condition (FS) which is compared to the resultant pretension condition (FP) of a practically performed tightening process performed via the same specific algorithm, and evaluating the outcome of the comparison for quality acceptance or refusal.
    Type: Grant
    Filed: July 6, 2004
    Date of Patent: April 20, 2010
    Assignee: Atlas Copco Tools AB
    Inventors: Carl-Gustaf Carlin, Bo Lennart Hellmark
  • Publication number: 20100094528
    Abstract: The invention is an abnormal combustion detection method for spark-ignition internal-combustion engines. For each engine cycle, a parameter characterizing a distribution of N combustion indicator values, CA10 for example, acquired over N cycles preceding the cycle in progress, is determined while ignoring extreme values. A threshold is defined from this parameter for the combustion indicator. The start of an abnormal combustion is then detected by comparing the combustion indicator with this threshold and the course of the abnormal combustion detected in the combustion chamber is controlled.
    Type: Application
    Filed: September 28, 2009
    Publication date: April 15, 2010
    Inventors: Dominique AUCLAIR, Laurent Duval, Alexandre Pagot, Benoist Thirouard, Jean-Marc Zaccardi
  • Patent number: 7698109
    Abstract: The invention provides a method for configuring a virtual representation of an assembly of a plurality of components, by: I) storing a first set of data representing a plurality of categories of components, and, for each category, parameters and constraints defining limitations for configurations of each of the components, II) generating and storing a second set of data representing the assembly of a plurality of components, while respecting the constraints associated with each component and constraints for the assembly, and generating a third set of data representing a present configuration, III) repeating the step II) by: a) adding, to the second and third set of data, data which represent a component and which are derived from the first set of data, or b) deleting data representing a component of the second and third set of data, or c) amending data representing a previously added component of the second and third set of data, while respecting the constraints associated with each component and constraints
    Type: Grant
    Filed: December 19, 2002
    Date of Patent: April 13, 2010
    Assignee: 3DFacto A/S
    Inventors: Anda Binzer, Thomas Randrup
  • Publication number: 20100087948
    Abstract: A collision preventing device includes an acceleration/deceleration simulating unit 30 that performs acceleration/deceleration processing based on a moving command generated by a function generation unit 16 according to a method similar to that used by acceleration/deceleration units 18x and 18z and obtains a moving path resulting from the acceleration/deceleration processing, an interference check unit 34 that performs interference check between a mobile member and an interfering object along the moving path generated by the acceleration/deceleration simulating unit 30 and determines whether any interference may occur, a delay unit 32 that successively stores moving commands generated by the function generation unit 16 and successively outputs a moving command having been stored a predetermined time before, and a moving command blocking unit 36 that sends the moving command output from the delay unit 32 to the acceleration/deceleration units 18x and 18z if the interference check unit 34 determines that there
    Type: Application
    Filed: October 5, 2009
    Publication date: April 8, 2010
    Applicant: OKUMA CORPORATION
    Inventor: Takahiro Yamaguchi
  • Patent number: 7693696
    Abstract: A method for welding includes providing a pair of substrates with no gap between them. The welding process uses lasers that are moveable through a locus of points relative to the substrates and each other to weld the substrate together. The moveable lasers assist in controlling a formation of a weld keyhole that assists in expelling gases that develop during the welding process.
    Type: Grant
    Filed: May 16, 2007
    Date of Patent: April 6, 2010
    Assignee: Chrysler Group LLC
    Inventors: Mariana G. Forrest, Lu Feng
  • Patent number: 7693695
    Abstract: In one aspect, the invention provides a method for modeling the performance of a fixed cutter bit drilling an earth formation. In one embodiment, the method includes selecting a drill bit and an earth formation to be represented as drilled, simulating the bit drilling the earth formation, displaying the simulating, and adjusting at least one parameter affecting the performance. The method of design is used to make a fixed cutter drill bit. In another embodiment the method includes numerically rotating the bit, calculating bit interaction with the earth formation during the rotating, and determining the forces on the cutters during the rotation based on the calculated interaction with earth formation and empirical data.
    Type: Grant
    Filed: July 9, 2004
    Date of Patent: April 6, 2010
    Assignee: Smith International, Inc.
    Inventors: Sujian J. Huang, Peter Thomas Cariveau
  • Patent number: 7693628
    Abstract: A method and apparatus for synchronous communication in a control system is disclosed. Within a first time interval, a first source task is executed to broadcast a first destination task, within a second sequential time interval, the first destination task is communicated over a channel to a first destination, and within a third sequential time interval, the first destination task is consumed. Within the first time interval, a second source task may be executed to broadcast a second destination task, within the second sequential time interval, the second destination task may be communicated over the channel to a second destination, and within the third sequential time interval, the second destination task may be consumed. The first source task is allowed to be scheduled ahead of the second source task, and the second source task is allowed to be scheduled ahead of the first source task.
    Type: Grant
    Filed: January 4, 2005
    Date of Patent: April 6, 2010
    Assignee: GM Global Technology Operations, Inc.
    Inventors: Thomas E. Fuhrman, Miroslawa A. Supal, Arnold W. Millsap
  • Publication number: 20100082310
    Abstract: Systems and methods that characterizes a load as a function of position/movement of mechanical components—as induced by such load in the servo-drive system. By running a plurality of motion profiles, corresponding torque/forces that generate such motions can be calculated and readily represented (e.g., as a table) in form of a position dependent load. In addition, a parsing component can decompose or break up a load (which generates a desired motion) to its subparts or constituent values for further simulation analysis.
    Type: Application
    Filed: September 30, 2008
    Publication date: April 1, 2010
    Applicant: ROCKWELL AUTOMATION TECHNOLOGIES, INC.
    Inventors: John Pritchard, Graham F. Elvis, Gurdial Singh
  • Patent number: 7689388
    Abstract: An easy and cost-effective method of generating high fidelity simulation service loads. This invention, however, provides a simple but theoretically sound approach to conducting an accelerated simulation test, while obtaining a reasonable acceleration rate for the test. The method includes the steps of developing a service load history database; combining multiple time series models; adjusting the change of each time series model creating an accelerated service load model; regenerating a random vibration load data; and feeding the load data to drive an actuator for a high fidelity random vibration simulation test.
    Type: Grant
    Filed: September 15, 2003
    Date of Patent: March 30, 2010
    Assignee: The Boeing Company
    Inventor: Jian Dong
  • Patent number: 7689386
    Abstract: A new type of method and system for designing duct work is disclosed. This system may be implemented using a computer. The system may be designed such that specific information regarding the room, the appliance, and/or other information is input into the computer. Using this input information, along with information that is stored in a database, the system will output a design for the duct work that may include both a cut sheet (for cutting out the duct work) as well as a three-dimensional representation of the duct work that is displayed on a computer.
    Type: Grant
    Filed: July 18, 2005
    Date of Patent: March 30, 2010
    Assignee: G & G Ventures, LLC
    Inventor: Travis Gates
  • Publication number: 20100076739
    Abstract: In one aspect of the invention, each bolt is modeled using a beam element in a FEA model. To apply desired pretension to one or more bolts, at least one pretension-versus-time curve is specified. Each pretension-versus-time curve includes ramp portion, desired pretension portion and optional unloading portion. Duration_of the pretension-versus-time curve generally covers first 0.5-1% of total simulation time of a car crashworthiness analysis. Ramp portion starts from zero to desired pretension in a substantially linear manner, and hence being configured for applying desired pretension to a bolt gradually with smaller increments. Desired pretension portion is configured for ensuring the desired pretension can actually be applied to the beam element during an initialization process—a series of quasi-static analyses. Since the method is independent of the deformation of the beam, the method completely avoids the need to iteratively determine an axial strain or displacement that gives the desired pretension.
    Type: Application
    Filed: September 25, 2008
    Publication date: March 25, 2010
    Applicant: Livermore Software Technology Corporation
    Inventor: John O. Hallquist
  • Publication number: 20100076738
    Abstract: Computer-implemented systems and methods are provided for modeling a geomechanical reservoir system to provide fracturing predictions. The model predictions are generated by solving a system of partial differential equations that model the geomechanical reservoir system.
    Type: Application
    Filed: September 17, 2009
    Publication date: March 25, 2010
    Applicant: Chevron U.S.A. Inc.
    Inventors: Ricky Howard Dean, Joseph Henry Schmidt
  • Publication number: 20100076734
    Abstract: Method for simulating the ventilation of a liquid tank (1,101), in particular a liquid fuel tank of a vehicle, comprising an internal volume (3,103), a wall (2,102) that defines said internal volume (3,103), and a set of valves (4a,4b;104) for ventilation of the internal volume, said method comprising the calculation of a maximum liquid volume that can be ventilated (14,114) for a maximum angle of inclination of the tank (1,101).Such method also comprises the calculation of at least one maximum liquid volume that can be ventilated (14,114) for at least one intermediate angle of inclination below said maximum angle, but above zero.
    Type: Application
    Filed: June 24, 2009
    Publication date: March 25, 2010
    Applicant: INERGY AUTOMOTIVE SYSTEMS RESEARCH (Societe Anonyme)
    Inventors: Eric VOLTO, Pierre LACOME
  • Publication number: 20100070252
    Abstract: A manipulation simulator including an input member which moves in response to a driver's braking operation; a reaction force generation device which generates a reaction force according to an amount of deformation; an output member which deforms the reaction force generation device; and a transmission device between the input member and the output member, which transmits a reaction force of the reaction force generation device to the input member via the output member. The input member moves rectilinearly; the reaction force generation device generates a reaction force linearly according to its deformation amount; the transmission device converts the input member rectilinear motion to a rotary motion that is transmitted to the output member; and the ratio of the amount of output member motion to the amount of input member motion is varied continuously and nonlinearly according to the amount of input member motion.
    Type: Application
    Filed: November 30, 2007
    Publication date: March 18, 2010
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Hiroshi Isono
  • Publication number: 20100070065
    Abstract: A method of surface topography prognosis for a tissue paper which is to be produced in a manufacturing process by utilizing a structured fabric and into which a structure is embossed by way of the fabric, the surface topography of at least one structured fabric which is already used in the production process is plotted by way of a sensor. Originating from the surface topography of the already utilized structured fabric, the surface topography of the tissue paper is simulated through data processing, through a simulation of the paper production process. The algorithm used for the simulation is calibrated with the aid of a comparison of the simulated surface topography of the tissue paper with the surface topography of the actual tissue paper produced with the structured fabric, which is already being utilized in the production process.
    Type: Application
    Filed: September 10, 2009
    Publication date: March 18, 2010
    Inventors: Matthias Schmitt, Stefan Schendzielorz