2543 results about "Optimal design" patented technology

A computer-implemented automated building design and modeling and construction project cost estimating and scheduling system (“DMES system”) is described. The DMES system provides a central source for all of the design and construction information for a construction project in a coordinated two-dimensional and three-dimensional spatial database that is freely accessible by all of the members of an interdisciplinary construction project team as a means to produce automatically coordinated design development and construction document information. The DMES system acquires and stores all of the appropriate design, engineering, and construction expertise and information available for any building type for use in automatically assembling and coordinating the design, cost-estimating, and scheduling for a construction project. In one embodiment, the DMES system consists of a plurality of objects, comprising elements and massing elements arranged in an assembly hierarchy. Each of the objects includes programming code that defines an interface and discrete internal functions that define its behavior. When instantiated in the database, the objects automatically create further instances of other objects in the hierarchy, which in turn do the same, thus assembling a complete building model automatically from the initial manually-placed instance. The building model enables automatic generation of drawings and cost and scheduling information. By running automatic iterations of the building model, multiple designs may be evaluated to determine the optimum design.

A link extends between a distal member and a proximal member of a wearable device, such as an exoskeleton, orthosis or prosthesis for a human lower limb. One or other of the distal member and the proximal member includes a crossing member. The link extends from the crossing member of the distal member or the proximal member, to the other of the distal member or the proximal member. Actuation of the link translates to a force at the distal or proximal member that is normal to a major longitudinal axis extending through the distal and proximal members. In one embodiment, a sliding link of a device configured for use with a human joint tracks two degrees of freedom of the joint.

The particle swarm optimization method for microgrids formulates a control problem as an optimization problem and PSO is used to search the solution space for optimal parameter settings in each mode. The procedure models optimal design of an LC filter, controller parameters and damping resistance in grid-connected mode. Moreover, the procedure optimizes controller parameters and power sharing coefficients in autonomous mode. The method uses particular nonlinear time-domain-based and eigenvalue-based objective functions to minimize the error in the measured power, and also to enhance the damping characteristics, respectively.

A finite element pre processing method for reconstructing a three-dimensional entity model comprises the steps that first, a material object is scanned so that point cloud data can be acquired; second, the point cloud data are imported to 3-matic software, and the position of the model is adjusted; third, the point cloud data are de-noised and sampled; fourth, three-dimensional reconstructing of the point cloud data is performed through a computer, wherein the point cloud data are packaged so that a surface mesh model can be generated; fifth, thin wall characteristic analysis is performed on the model so that a basic model structure can be known; sixth, three-dimensional repair is performed on model meshes, so that the edges of the model are matched with the defect contour of the material object; seventh, the model is redesigned as required, and thus the structure of the model can be more reasonable and meet the design requirement; eighth, the meshes of the redesigned model are partitioned again; ninth, a volume mesh is generated, material attributes are added, and the new model is saved in the format through which finite elements can be directly analyzed; tenth, finite elements are analyzed. Through the method, the scanned data processing time is shortened and FEA / CFD pre processing time are shortened, and optimal design of the model can be conveniently performed.

The invention provides a method for constructing a thinned MIMO (Multiple Input Multiple Output) planar array radar antenna, which is on the basis of a phase center approximation principle and combines an MIMO antenna thought. The antenna arrangement optimal design is carried out by adopting the MIMO antenna thought. When all transmitting array elements simultaneously (or in turns) transmit orthogonal signals and receiving array elements simultaneously receive echo signals, a virtual planar array with uniform intervals is subjected to equivalence processing by utilizing the phase center approximation principle. According to the thinned MIMO planar array radar antenna constructed according to the invention, few transmitting antenna array elements and few receiving antenna array elements can be adopted and the equivalent full-array-element arrangement planar antenna array is virtually realized. Compared with the planar array antenna which is the same size as the equivalent virtual planar array and is directly arranged, the thinned MIMO planar array radar antenna constructed according to the method disclosed by the invention has the advantage of greatly reducing the requirement on the number of the array elements.

For application to analog, mixed-signal, and custom digital circuits, a system and method to do: global statistical optimization (GSO), global statistical characterization (GSC), global statistical design (GSD), and block-specific design. GSO can perform global yield optimization on hundreds of variables, with no simplifying assumptions. GSC can capture and display mappings from design variables to performance, across the whole design space. GSC can handle hundreds of design variables in a reasonable time frame, e.g., in less than a day, for a reasonable number of simulations, e.g., less than 100,000. GSC can capture design variable interactions and other possible nonlinearities, explicitly capture uncertainties, and intuitively display them. GSD can support the user's exploration of design-to-performance mappings with fast feedback, thoroughly capturing design variable interactions in the whole space, and allow for more efficiently created, more optimal designs. Block-specific design should make it simple to design small circuit blocks, in less time and with lower overhead than optimization through optimization.

A system and method for analyzing timing and noise effects in a hybrid circuit which contains a plurality of electrical components. The timing and noise effects for the hybrid circuit are generated by simulating electrical conditions within a hybrid circuit model. The hybrid circuit model is constructed by creating and integrating analog and behavioral models from the plurality of electrical components. The timing and noise effects remain accurate even at high printed circuit board / multi-chip module clock speeds, thereby ensuring that a user is able to construct an optimal design for any one of the plurality of electrical components.

The invention discloses an RAID (redundant array of independent disc) 5-orientated optical design method for a writing operation in continuous data storage. The method comprises the steps of: in continuous data storage application, saving writing data blocks, transmitted by an application program, in a memory buffer area; constructing an alignment data block of which the length is the same as that of a complete strip of an RAID5; then enabling the alignment data block to fill the overall strip opportunely on the RAID5; and then transmitting the alignment data block to the RAID5 so as to write the overall strip of the RAID5. Therefore, the written data blocks fill the overall strip of the RAID5 opportunely to avoid the expense for generating the verification of reconstruction, read-modify-write and the like; and the continuity of the data blocks avoids the expense of track seeking of a magnetic head, and improves the throughput capacity of a storage system. Simultaneously, the data blocks written into the RAID5 are sequenced and are written into adjacent strips continuously so as to realize the continuous I / O transmission of the RAID5. The invention is also suitable for an RAID6.

A subwavelength terahertz (THz) switch using an artificially designed conductor metamaterial is discussed in this invention. Theoretically, slow-light EM wave propagating at THz speed imitates the strongly localized surface plasmon modes and henceforth is called Spoof Surface Plasmon Polariton (SSPP) mode in this invention. The SSPP mode of slow-light EM propagation can be easily tailored by changing the refractive index of the dielectric materials inside the metallic gap structure engineered as a periodic array of grooves. Thus, the incorporation of electro-optical material which has birefringence such as a nematic liquid crystal (N-LC) or multiple-refractive indices into the metallic gap leads to a highly compact and efficient terahertz switch being controlled by a low-voltage signal. The optimal design of the SSPP switch enabled by this novel method shows many interesting properties including 1) strong subwavelength localization; 2) relatively high extinction (On / Off switching) ratio; and 3) small damping attenuation. The THz dynamic switches can be used to construct linear switches, Y junction switches and Mach-Zehnder interferometers by using micromachining and other fabrication techniques.

Choice experiments are a type of survey which can be used to model user behaviour, in which survey respondents are presented with a choice of combinations of features and forced to one set of features. A computational system for performing choice modelling is described. This system comprises a user interface module, that allows an end users to specify what they set of features they wish to investigate (the attribute space), and constraints. A design generator module is used to generate an experimental design that matches the user defined attribute space. A range of different designs can be generated and compared to identify the optimum design. The design generator allows the user to specify their exact problem, rather than forcing them to modify their problem to match a known experimental design. An online survey assembly module is used to generate survey templates and a data collection and sampling uses the templates to display treatments to the respondents. A model generation model analyses the collected data, and a model explorer module is provided to allow the user to explore the results. The system has the advantage of making choice modelling accessible to a wider range of users, and enables users considerable freedom and scope to investigate problems of specific interest.

Exemplary embodiments of the present invention are directed to methods and program products for optimizing clustering of a design structure matrix. An embodiment of the present invention includes the steps of using a genetic operator to achieve an optimal clustering of a design structure matrix model. Other exemplary embodiments of the invention leverage the optimal clustering by applying a genetic operator on a module-specific basis.

An embodiment of the invention provides an SDN-based tiered routing path determination method and device that are applied to an inter-domain controller and an intra-domain controller in a software-defined network; the SDN-based tiered routing path determination method comprises the following steps: a cross-domain request of a data flow sent by the intra-domain controller is obtained; according to the cross-domain request, a start point network domain and an intermediate network domain where a source node is positioned are determined; network performance information sent by the intra-domain controller is obtained; according to the network performance information and a plurality of preset cross-domain route selection strategies, an optimal routing path for transmitting the above data flow in all network domains is determined; according to the start point network domain and the intermediate network domain, boundary information of a first network domain and boundary information of a second network domain are determined and sent to the intra-domain controller, and the intra-domain controller is enabled to determine the optimal routing path for data transmission in the network domains. Via the SDN-based tiered routing path determination method and device, optimal design of a cross-domain routing path can be realized.

A project management system comprises a means for storing each of a plurality of process definitions, a plurality of phase definitions, a plurality of task definitions, an association between each task definition and a selected process definition and a selected phase definition, and task status information associated with each task, and a display means for displaying a two-dimensional grid arrangement in which a first dimension is subdivided according to process definitions and a second dimension is subdivided according to phase definitions, thereby to define a plurality of cells at the intersection of the two dimensions, a plurality of the cells thus defined therefore representing tasks, in respect of which task status information is displayed.; A means for storing user identities and user rights associated with the user identities will allow the display means to be adapted to limit the display according to the user rights, either by withholding information relating to processes and / or phases not defined in the user rights, and / or by aggregating a plurality of cells and displaying a composite task status. This project management system is preferably provided via a suitable computer system, and a software module is arranged to implement this. Further, a project management summary view can comprise a two-dimensional grid arrangement in which a first dimension is subdivided according to processes and a second dimension is subdivided according to phases of work, thereby to define a plurality of cells at the intersection of the two dimensions, a plurality of the cells representing tasks in respect of which task status information is displayed. This project management system is particularly (but not exclusively) useful in the design of an engineered item. The proper oversight of the project permitted by the invention allows a more optimal design to be arrived at, and can also improve the project timescale and budget.

The invention belongs to the field of motor optimization designs, and relates to a multi-objective hybrid particle swam optimization design method for a double-fed wind power generator. The method comprises the following steps of: (1) determining a constraint condition and a to-be-optimized design variable of the double-fed wind power generator, and establishing sub-objective function equations to form a multi-objective function; (2) constructing variable space by using the to-be-optimized design variable, and constructing non-dominated solution sets of population according to the quality of an objective value; (3) ordering the non-dominated solution sets according a Pareto domination mechanism, determining a population niche by taking a non-dominated solution as a core, establishing a particle speed updating mechanism and finally obtaining an optimal design scheme; manufacturing a mode machine according to the optimal design scheme, inspecting an actual operation index of a motor, and comparing the actual operation index with an index given by the design scheme; and if the actual operation index exceeds a requirement range of operation indexes, adjusting a performance design scheme. Due to the adoption of the motor optimization design method provided by the invention, overall economic benefit and wind energy utilization rate of a wind power generating system can be improved.

There is disclosed a method of producing a design layout by optimizing at least one of design rule, process proximity correction parameter and process parameter, including calculating a processed pattern shape based on a design layout and a process parameter, extracting a dangerous spot having an evaluation value with respect to the processed pattern shape, which does not satisfy a predetermined tolerance, generating a repair guideline of the design layout based on a pattern included in the dangerous spot, and repairing that portion of the design layout which corresponds to the dangerous spot based on the repair guideline.

To provide a UML design method by which architecture design pursuing optimal design parameters while viewing the overall target system on the UML model can be performed. A UML design method of the present invention is a UML design method for performing design by modeling a target system based on Unified Modeling Language (UML), using a profile storing a design parameter, the method including the steps of: storing a stereotype and a tagged value in the profile as the design parameters; annotating a UML model of the target system with the stored stereotype and tagged value; and associating the added stereotype and tagged value with each class constituting the UML model, and displaying the stereotype and tagged value and the UML model, which are associated, on a graphical user interface.

The invention discloses a method for determining in situ injection repair diffusion radiuses of contaminated soil and underground water. According to the method, points are distributed according to a triangle method, pitch-row is designed to be perpendicular to the flowing direction of the underground water, array pitch is in the flowing direction of the underground water, and the flow expansion of a repair reagent in the underground water within the reaction effective time is taken into account. The method comprises three steps: firstly, observation method: the repair reagent and a definite proportion of bromide ion serving as tracers are simultaneously injected into an aqueous stratum in the condition of high pressure whirl spraying injection. The diffusion of the reagent is judged by observing the phenomena of grout return and grout leaking between adjacent injection points; secondly, bromide ion tracer method: after the completion of injection, underground water depth setting rapid sampling is performed, the concentration of the tracers is rapidly detected in field, and the concentration of the bromide ion in the underground water is compared with a background value; thirdly, bromide ion tracer method and observation method: the optimum diffusion radiuses are determined through synthetic judgment. The method is applied to optimal design of diffusion radiuses and hole arrangement parameters and monitoring of injection effect in soil and underground water in situ injection tests and repair construction.

A flat wide-angle objective of the invention consists of a first sub-unit that is located on the object side of the objective and comprises an assembly of two conventional aspheric negative, e.g., aspheric piano-concave lenses, and a second sub-unit in the form of a set of four microlens arrays arranged on the image-receiving side of the objective. The microlenses of all microlens arrays have the same arrangement of microlenses in all the arrays. A diaphragm array with restricting openings can be sandwiched between a pair of the microlens arrays. The objective of the invention can be realized into an optimal design only with predetermined relationships between the parameters of the optical system that forms the objective. The invention makes it possible to drastically reduce longitudinal dimension of the objective. In operation, the first sub-unit creates an imaginary image of the object in its focal plane, which is located on object side of the objective, while the second sub-unit creates an actual image of the object in the image plane on the image-receiving side of the objective. In this case, the function of the object plane is fulfilled by the aforementioned focal plane of the first sub-unit that contains the imaginary image of the real object.

The design of programmable logic devices, such as FPGAs, may be automated to allow scripts, setup files, and other tool files to be created directly from hollowed and filled netlist, and data-path and design constraint files without extensive human intervention. This allows an FPGA design to be created directly from a logic file to accelerate the FPGA design process. Once hollowed and filled netlists, and data-path and design constraint files have been generated from a design in a standard fashion, the implementation of that design onto an FPGA in an optimized fashion is automated by providing a computer program that is capable of implementing the design, testing the design, evaluating the test results, and altering the design to arrive at a more optimal design. The process may include several steps, such as initial placement of logic groups, sizing of logic groups and FPGA selection, timing analysis, and filled netlist complete design review. The steps may be iterative.

The method and system of the present invention allow a designer of a mechanical system to quickly and easily determine the optimal design for the system. The steps include creating models of the mechanical system and simulating the performance of the models to achieve a set of results. From these results, Response Surface Models can be determined. These Response Surface Models act as surrogates for the more complex models of the mechanical system, and can be used to optimize the performance of the system. If necessary or desired, these Response Surface Models can be optimized over a range of possible values for the design parameters to achieve a robust design.

A method for the design and optimization of inductors for RF circuits. This method consists in the formulation of RF circuit designs as geometric programs. The designer can specify a wide variety of specifications such as gain, bandwidth, noise, etc. The method, which was implemented in simple code, determines inductor dimensions and component values in a few seconds real-time. The results was also a globally optimal design.

The invention discloses a transient power quality detection device and a method for the same, belonging to the technical field of power transmission and distribution. The method comprises the following steps of: acquiring an undisturbed standard signal, processing the undisturbed standard signal with an improved S transformation method to get a base matrix of the undisturbed standard signal; acquiring voltage sag, voltage swell, voltage interruption, high-frequency transient disturbing signals and low-frequency disturbing signals, scaling a curve chart of the signals after being processed by the improved S transformation, building a standard template, and storing the template in a database; acquiring three-phase voltage and three-phase current data in a power grid; and matching the digital image curve with the standard template in the database according to a digital image matching principle so as to get the disturbance patterns. The invention provides the transient power quality detection device and the method for the same based on the improved S method, optimal design is provided in the aspects of detection accuracy, function implementation, data storage and the like of the device, so that real-time analytical ability and remote communication capability of transient power quality detection are improved.

The invention discloses a precision lost wax casting technology based on selective laser powder sintering 3D printing. The precision lost wax casting technology comprises the following steps that S101, a target part is subjected to optimal design of a CAD casting technology; S102, selective laser powder sintering 3D printing forming is carried out; and S103, silica sol / water glass precision investment casting is carried out. A wax mold of the part can be fast manufactured without molds, the metal part is fast manufactured, fast manufacturing of complex parts can be achieved, and integration, automation and fastness in the precision casting technology process can be achieved; and the development period of new products are greatly shortened, development cost is reduced, and the precision lost wax casting technology is especially suitable for production of single small-batch complex castings and trial-manufacturing of new products.

The invention provides a method for analyzing and designing a green building. In the method, a series of preliminary design conditions are provided for the design of the green building by computer-assisted design and multi-physical model analysis, and the optimal design conditions of the green building are obtained by weight calculation and analysis; based on the exterior environment of the building, weather conditions and various local renewable energy source conditions, the sorts and rules of available renewable resources can be obtained by establishing a sunlight analysis model, a wind field mathematic model, a noise physical model, a thermal conductivity effect analysis model, an interior daylight physical analysis model, a resource analysis model and the like, and inputting the basic data of rainfall, solar radiation intensity, wind speed, wind direction, geological exploration and the like; the feasibility of the utilization of geothermal resources and the renewable resources is obtained according to the calculation results of the resource analysis model; and on the basis of the feasibility, the final design of the shape of the green building is performed so as to provide boundary condition guide for the design of the green building.

A system for interactive design a product having a design solution which includes a design parameter and a design response includes a user computer system and a remotely located computer system in communication with the user computer system. The system also includes a computer- generated geometric model of a product design stored in a data storage means. The system further includes a statistical analysis software program implemented by the remotely located computer system and a computer aided engineering software program implemented by the remotely located computer system. The method is implemented by an executable product design software program, and includes the steps of identifying an ideal design solution for the product design by identifying an unnecessary design parameter having a predetermined significant influence on a variable design response and fixing a predetermined nominal value of the identified unnecessary design parameter at which the variable design response is a minimum and the product design is an uncoupled design or a decoupled design. The method also includes the steps of selecting a most robust ideal design solution from the identified ideal design solution that is the most uncoupled design or the most decoupled design. The method further includes the steps of optimizing the most robust ideal design solution to obtain a pareto-optimal design solution for use in the design of the product that includes a design parameter having an independent design response.

The invention provides a method for computational fluid dynamics and apparatuses making enable an efficient implementation and use of an enhanced jet-effect, either the Coanda-jet-effect, the hydrophobic jet-effect, or the waving-jet-effect, triggered by specifically shaped corpuses and tunnels. The method is based on the approaches of the kinetic theory of matter, thermodynamics, and continuum mechanics, providing generalized equations of fluid motion. The method is applicable for slow-flowing as well as fast-flowing real compressible-extendable fluids and enables optimal design of convergent-divergent nozzles, providing for the most efficient jet-thrust. The method can be applied to airfoil shape optimization for bodies flying separately and in a multi-stage cascaded sequence. The method enables apparatuses for electricity harvesting from the fluid heat-energy, providing a positive net-efficiency. The method enables efficient water-harvesting from air. The method enables generators for practical-expedient power harvesting using constructive interference of waves due to the waving jet-effect.

The invention relates to the field of optimum designs of hydraulic machinery and in particular to a multi-station multi-target optimum design method of a hydraulic turbine wheel. The method has the beneficial effects that a training BP neural network optimizing algorithm is established and an approximate prediction model is updated, CFD calculation of a large load is reduced, and a sufficient prediction precision is obtained by means of calculation of fewer times. The BP neural network optimizing algorithm and the NSGA-II multi-target genetic algorithm are organically combined to consider the diversity of populations while the optimal solution is continuously searched for in the whole algorithm, and the precision is enhanced. By means of optimization solution of the turbine wheel by means of the NSGA-II multi-target genetic algorithm, the problems that traditional design and model selection of the hydraulic turbine wheel are difficult and the hydraulic turbine wheel is likely to vibrate, instable in power output, relatively low in efficiency to a great extent and the like when the optimal station is deviated are solved, and the turbine efficiency, the axial force and the radial force are considered, so that the turbine operating ability can be effectively improved.

The invention relates to an in-situ thermal response testing method of stratified thermal properties of underground rock and soil. The invention relates to an in-situ thermal response testing device of the stratified thermal properties of the underground rock and soil. According to the in-situ thermal response testing device disclosed by the invention, a U-shaped pipe is buried, an optical fiber temperature sensor is inserted into two branch pipes of the U-shaped pipe, the U-shaped pipe is connected with an inlet and outlet of a circulating water pipeline of a ground testing device, water temperatures in the two branch pipes, namely the water inlet branch pipe and the water outlet branch pipe of the U-shaped pipe in different depth layers are respectively measured, the power of a heater is kept constant, and measured data of the water temperatures and the flow rates of circulating water in the two branch pipes of the U-shaped pipe in different depth layers at different times, as well as the corresponding heating power of the heater is recorded, so that a heat conduction coefficient, volume specific heat and a drilling thermal resistance value of soil in each layer can be obtained. According to the in-situ thermal response testing device disclosed by the invention, the defects that the distribution of the thermal properties of the rock and soil in different depths can not be obtained, the testing precision can not be improved, an optimal design method of the underground buried pipe can not be improved and the like in the prior art can be solved; furthermore, values of the thermal properties of the underground rock and soil, the types of the rock and soil, the contents of underground water and the seepage situations in the different depths can be obtained, and the in-situ thermal response testing device further has the advantages of high sensitivity, strong anti-interference property, corrosion resistance, small installation size, no requirements on a power supply and low testing cost.

A method of designing a material by optimising values for design variables includes the steps of: (i) providing one or more property models that produce a prediction for a value of a respective property of the material as a function of the design variables and produce a value for the uncertainty in the prediction, (ii) setting a specification target for a desired value for each property and a probability for that specification target to be met or exceeded, (iii) determining a probabilistic target for a value for each property, the probabilistic target being based on the specification target and the probability, and defining a merit index factor based on the degree to which a given prediction satisfies the probabilistic target, (iv) constructing an overall merit factor from the individual merit index factors of the properties, and (v) determining a set of optimal design variables that optimise the overall merit factor.

The invention relates to a high-power dual-port output silicon-based tunable external cavity laser. A hybrid integration scheme is adopted, a low-cost low-loss silicon-based microring waveguide chip is used as an external cavity medium wavelength adjustment unit, end surface coupling with an III-V group reflective semiconductor gain tube core is realized through two collimating lenses, the structure is simple, the complex process limitations of a monolithic integrated semiconductor laser are overcome, no moving part exists in the external cavity, and the reliability and the stability can be effectively improved. Through optimal design of the silicon-based microring waveguide chip structure, the nonlinear optical effect generation probability of laser in a silicon-based waveguide microring resonator is greatly reduced, and the maximum optical power which is allowed to be outputted by the laser of the structure is improved. Due to addition of a band pass filter in the external cavity collimating light path, technical requirements on the silicon-based microring waveguide chip can be effectively reduced, the coupling packaging efficiency can be improved, and low-cost batch production is facilitated.