366 results about "Quality by Design" patented technology

A method is for establishing a nuclear reactor core loading pattern (LP) for fuel assemblies and burnable absorbers (BAs). The method establishes an optimum LP through the steps of: a) providing nuclear data representing fuel assemblies and BAs in a nuclear reactor core; b) depleting the nuclear data to form a reference core depletion; c) incorporating the nuclear data into a system of linear equations of a nuclear design quality flux solution method; d) defining the system of linear equations to include constraints which accurately represent the neutron physics of the reactor; employing the equations as a constraint matrix for a MIP solver to find an optimum core pattern solution; f) repeating steps b) through e) updating the constraints and objective functions to satisfy specified engineering requirements and establish an optimum core loading pattern. An algorithm for deriving the system of equations is also disclosed.

The invention relates to a data management system for vehicle products and a method thereof, wherein the system comprises a user interface layer, a communication layer, an application logic layer, a main sever layer and a database layer, the use interface layer is connected with the database layer through the communication layer, the application layer and the main sever layer in sequence. The method comprises a graph document management and processing operation, a vehicle production structure management operation, a right management operation and a data query processing operation. By using the data management system for vehicle products and the collaborative design method thereof, the collaborative design of the vehicle development process is jointly achieved, and the real-time collaboration in the CAD environment and data sync update of associated parts are creatively achieved to effectively reduce the development period of the vehicle styles, and increase design quality, therefore the development period of the vehicle styles is reduced by about 20%, and the design alteration is reduced by over 30%, then, the system has simple and practical structure, fast and convenient usage process, high-efficient development design, stable and reliable working performance, and wider applicable range.

The invention discloses a determination method of network side harmonic current of a high-voltage direct current power transmission system. The determination method comprises the following steps: if the harmonic current voltage at a direct current power transmission line inlet is zero, decoupling and equalizing a rectifying side and an inverting side into a plurality of independent six-pulse moving bridge units; dividing a work period of the six-pulse moving bridge units into six phase converting sections and six non-phase converting sections; calculating a phase converting overlapping angle of each phase converting section; equalizing a current converter into a harmonic current voltage source containing internal resistance; calculating the direct current side harmonic current according to the concrete forms of a smoothing reactor and a direct current filter; obtaining valve side harmonic current according to an equivalent circuit of the current converter; and converting the valve side harmonic current to a network side according to a connecting structure of a transformer to obtain the network side harmonic current. The invention considers background harmonic current and other nonideal factors, and can quickly and accurately obtain the harmonic current at the network side of a converter transformer, accelerate the period for designing an alternating current filter in the high-voltage direct current power transmission engineering and improve the design quality and the design efficiency.

The invention discloses a fight simulation system. An experiment table of the fight simulation system comprises a navigation bridge hardware system, a fight task simulation system and a human-machine work efficiency assessment system. The human-machine work efficiency assessment experiment table integrates the work efficiency assessment of the information display interface with the traditional fight task simulation. By loading the design scheme of the information display interface of the aviation cockpit into the fight simulation system, the design scheme of the information display interface is assessed by using the human-machine work efficiency assessment system after a tester simulates the fight, thereby assessing the human suitability of the information display interface of the aviation cockpit. By using the human-machine work efficiency assessment experiment table, the design quality of the information display interface of the aviation cockpit can be improved, the development period can be shortened and the development cost can be reduced.

The invention discloses a method for designing a water-spraying boost pump hydraulic model for an efficient and large-power-density ship. The method comprises the following steps that type selection design of water-spraying boost pump hydraulic parameters is conducted, two-dimensional axial face projective geometry is determined, three-dimensional geometrical shapes of an impeller and guide blades are obtained according to a parameterized ternary reversal design method, a three-dimensional geometrical shape of a shrinkage nozzle is obtained through circumferential rotation, the three-dimensional geometrical shapes of the impeller, the guide blades and the shrinkage nozzle are combined to obtain the water-spraying boost pump hydraulic model. The method has the outstanding advantages that the design period is short, the design quality is high, and the water-spraying boost pump hydraulic model which has the advantages of being high in efficiency, compact and large in power density can be rapidly and reliably designed. The geometrical shapes of the impeller and the blades are obtained according to the parameterized ternary reversal design method, so that on the condition that the water-spraying boost pump hydraulic model is kept compact, the efficiency is improved, cavitation is restrained, and the power density is increased in the researching and developing process of a high-speed ship water-spraying boost pump.

The invention discloses an electric power engineering design review and technical economic evaluation information system. The electric power engineering design review and technical economic evaluation information system comprises a project review plan management module, a project review module, a province infrastructure project information database construction module, a design quality management module, an external user interaction management module, a main network engineering cost compilation system module, a cost analysis management module and a message management module. The system integrates demands of actual engineering project design review and technical economic management works, makes engineering project design review and technical economic management works have great improvement in standardization, unification, normalization and refinement, greatly improves an intensive management level, effectively and practically improves efficiency of engineering project design review and technical economic management works and brings about substantial economic and social benefits.

The related auto size marking method for 3D/2D mold parameters assembly design comprises: 1. designing mold frame, determining all of the member size, mold nest and core quantity, distance among product, nest and template; 2. designing secondary structure by receiving computer command and calculating to generate slide block, slope pin, cooling loop, and other assembly; 3. executing whole assembly diagram command to generate 2D diagram; 4. alternating request, repeating step 2-3; 5. outputting the formal 2D diagram; 6. outputting the 2D member processing diagram. This invention has more reasonable process, improves design quality, and reduces manual error.

The invention discloses a system and method for automatically generating the project amount and drawing a CAD chart and belongs to the field of electric power engineering design. The system comprises a resource library maintaining module, a project editing module, a drawing paper data calculating module, a CAD drawing paper automatic drawing module and a project amount calculating and exporting module. A data information bridge is established between a CAD drawing tool and budget establishment software, the project amount of data is calculated directly through the software instead of being calculated manually as done in the prior art, and therefore efficiency and quality of budget establishment are improved. During CAD, comprehensive analysis can be achieved by the software according to project amount information such as terrains, geological conditions, tower land occupation, the cubic meter of earth and stone and foundation works, cost information corresponding to a designing scheme can be obtained more quickly, overall cost of the scheme can be obtained to participate in cost comparison, and then an optimal path designing scheme is selected, and design quality is effectively improved.

The invention relates to a management system and a management method for enterprise information, and aims to solve problems that work states are non-transparent and delayed, design quality is uncontrollable and the like which are exposed gradually due to facts that large quantities of information are generated in different business links in a process from development and initiation of a new product to final mass production of the product of some enterprises at present, and the decentralized management of the information, agreement, approval and issue of technical data and project management are all completed manually. The management system comprises a drawing and document and table management module, a material category and attribute management module, a research and development project management module, an approval process management module and a design change management module. By project management and electronic workflow management methods, the management system can control progress of a product development project and monitor the workflow, and assist in dynamically learning actual work conditions of a product by project monitoring so as to realize effective and reasonable work arrangement and allocation according to the actual work conditions, and accordingly, paper-less office work is realized.

The invention discloses an acceleration frequency response analysis-based body floor optimal design method, which comprises the following steps of: acquiring a body floor design input condition; establishing a CAD (Computer Aided Design) model; establishing a finite element model; performing mode CAE (Computer Aided Engineering) analysis on the finite element model to perform mode test on a white body sample; performing benchmarking; checking and verifying the finite element model according to a benchmarking result; searching a region of a large vibration displacement of the white body floor in the finite element model according to a mode CAE analysis result, extracting an inspection point from the region, and performing acceleration frequency response analysis on the inspection point; and modifying the floor design input condition according to the acceleration frequency response analysis result until the vibration response requirement is met. The method has the characteristics of shortening the development time, reducing the development cost, improving the entire noise, the vibration and the comfort, reducing the error between the finite element model and the floor sample and keeping high design quality.

In an in-vehicle illumination device including: a room lamp section provided with a first light source section and a light guide plate, a map lamp section provided with a second light source section and a lens, a first switch for use by the room lamp section, and a second switch for use by the map lamp section, a light source configuring the first light source section and a light source configuring the second light source section are mounted on any same heat sink member. In the resulting in-vehicle illumination device, measures are taken against heat generation, and the reduction of size and weight is achieved. The design quality of the illumination device can be also improved.

The invention discloses a semi-physical real-time simulation system of an airplane reverse thrust hydraulic unit. A closed loop testing system mainly comprises a computer, a programmable logic controller (PLC) hardware platform, an input device, and a software simulation device arranged in the computer; submodels of a hydraulic system are built by utilizing a hydrokinetics and electronic control theory, and then each simulation submodel forms the software simulation device; the PLC hardware platform performs parameter control and logic control to the software simulation device according to a state signal of the input device, and the output quantity of the software simulation device is shown in the computer by a digital and cartoon mode and also used as a feedback signal to be fed back to the PLC hardware platform through a communication interface. The invention can test and analyze various parameters of the airplane reverse thrust hydraulic unit without preparing the hydraulic unit, thereby greatly shortening the developing and analyzing periods of the reverse thrust hydraulic unit, improving the design quality and reducing the test expense.

There are provided a bracket 3 that has a frame section 11 integrally formed by a transparent material, an apparatus mounting section 12 disposed in an inner peripheral edge of the frame section, and parts fixing sections 13, 13, . . . disposed on the outside of the frame section; a front panel 2 that is formed by a transparent material and disposed on the front surface side of the bracket; an apparatus body section 4 that has a screen surface 4a and is mounted at the apparatus mounting section of the bracket; holding members 31, 31 that hold the front panel and the bracket in the state that they are connected together at the front and rear; and functional sections that are fixed to the parts fixing sections of the bracket so as to be disposed on the outside of the front panel, and that sends and receives electric signals to exhibit a predetermined function. Signal paths 35, 35 to perform sending and receiving of electric signals between the apparatus body section and the functional sections are formed in the inside of the bracket or in a boundary portion between the front panel and the bracket. This enables sending and receiving of electric signals between the apparatus body section and the functional sections that send and receive electric signals to exhibit a predetermined function, while maintaining good design quality.

The invention discloses a computer-assisted sketch drawing method and system based on eye movement and brush stroke data. The method includes the following steps that feature extraction is conducted on eye movement data and brush stroke data of a designer, and eye movement feature parameters and brush stroke feature parameters are obtained; the eye movement data and the brush stroke data are collected and obtained in a sketch drawing process by using a computer; whether the current state of the designer is a creative thinking state is judged according to the eye movement feature parameters and the brush stroke feature parameters; when the designer is in the creative thinking state, the next staring point position of the designer is judged according to the eye movement data, and an image stimulus source is shown at the position and assists the designer to conduct sketch drawing. According the eye movement and brush stroke information of the designer, the creative thinking state of the designer is identified and stimulated. By predicting staring point position changes of the designer, the image stimulus source position is optimized, and designing quality of the designer is improved.

The invention discloses a BIM (Building Information Modeling)-based metro comprehensive pipeline adjustment method, which is characterized in that a pipeline is adjusted by using a manual or automatic method on the basis of constructing a BIM model. According to the method, the manual or automatic pipeline adjustment mode is adopted on the basis of the constructing the BIM model, so that avoidance adjustment can be freely and flexibly realized, pipeline collision can be avoided, the design efficiency and the design quality can be improved, an abandoned project caused by pipeline collision can be avoided, and the construction cost is reduced. The method is suitable for various BIM technology-based three-dimensional aided design platforms.

The invention discloses a centrifugal pump flow induction noise numerical prediction method which is used for computing the sound source feature of flow noise on the basis of the test results of a centrifugal pump performance test. The method can well overcome the shortcomings that in a traditional computing method, the influence from a pump body structure on acoustic propagation is not considered, and eddy broadband noise is ignored. Centrifugal pump inner flow analysis and far-field noise value computing results are used in centrifugal pump low-noise waterpower design, test frequency can be reduced, the development cycle can be shortened, development cost can be saved, the design quality of a centrifugal pump can be effectively improved, an interpolation method is used between a fluid mesh and an acoustics mesh, sound source information of flow field calculation can be reserved to the maximum degree, GREEN analysis is used, the contribution degree on noise from different parts of a shell body can be obtained, such study is carried out, and early design or later modifying of the shell body can be optimized.

The invention discloses a serial bone plate design method based on an average thighbone model. The design method includes the steps of 1 building the average thighbone model, wherein parameters are defined, a constraint relation of the parameters is set up, and a multivariate statistics mathematic model is set up; 2 parameterizing characteristics of a bone plate, wherein the characteristics of the bone plate are generated, the characteristic parameters of the bone plate are defined in a layered mode, and the characteristics of the bone plate are compiled progressively; 3 designing the bone plate serially, wherein a mapping relation between the characteristic parameters of the bone plate and curved surface morphological parameters of the average thighbone model is set up, and serial bone plate design is achieved by modifying the parameters. A scientific basis is provided for reasonable and serial bone plate design in the field of computer-assisted orthopedic operations, and the serial bone plate design method is of great significance in improving the bone plate design quality and shortening design time.

The invention provides a system and a method for controlling the researching and developing quality of a product. The system comprises a data bus, a quality function deployment QFD module, an index management module and a memory, wherein the quality function deployment QFD module is used for carrying out staged conversion on a product index, converting a client requirement index into a first stage product researching and developing index in a multi-stage product researching and developing index in the first stage, and converting the previous stage product researching and developing index into the next stage product researching and developing index in a subsequent stage; the index management module is used for correlating data of the client requirement index and data of the product researching and developing index in each stage through the data bus, and forming a mapping path; and the memory is used for storing the data of the product quality requirement indexes and the data of the product researching and developing index in each stage. Product researching and developing quality information (such as all technical indexes) can be integrated by the quality data bus, so that quality of design can be controlled accurately.

The invention relates to a three-dimensional mechanical in-process model sequential modeling method based on removal feature recognition, which mainly aims to solve the technical problems of repetitive work and big application limitation in the prior art. In the method, first of all, the removal features are classified into boundary feature, inset feature, communication feature, thread feature and loop feature. On the basis of the classification, the method includes the steps of: 1) producing a workblank; 2) judging whether a next process is necessary, and if yes, entering the third step; 3) recognizing the removal features in the process, which includes selecting a feature type and recognizing the feature; and 4) modeling the in-process models. All the in-process models are assembled to form a whole process model and are organized by a standard structure of a process all-information model. The method makes full use of the geometrical characteristics of the original components, solves the problem of high quality requirement to the original component model design in three dimensional process design, speedily creates the in-process models according to the practical mechanical processing sequence and improves the overall efficiency of the process design system.

The invention relates to a three-dimensional modeling technology and discloses a CATIA (Computer-graphics Aided Three-dimensional Interactive Application) three-dimensional model establishing method for a railway simple-support bridge, for a purpose of improving the design quality and the design efficiency. The CATIA-based three-dimensional model establishing method comprises the following steps: firstly, formulating a data naming rule for completely eradicating number repetition of parts, and carrying out distinct data structure division for a purpose of better design after the strict data naming rule is formulated; then, erecting a framework to provide accurate reference information for subsequence design; then, establishing corresponding parameters and functions and making templates of various parts and various types by using the established framework information, then calling the templates to finish establishment of the model, measuring work amounts and sizes of various parts and hanging information of the work amounts and sizes of various parts under the corresponding templates, and finally finishing two-dimensional drawing output under a CATIA engineering drawing module. The CATIA-based three-dimensional model establishing method is applicable to rapid and accurate establishment of the three-dimensional model of the railway simple-support bridge, and provides a technical guidance for actual construction.

The invention discloses a high-strength micro-expansion prestress anchoring grouting material and a preparation method thereof. The material is prepared from a gelatinization component, a fine aggregate component, an expansion component, an active doped material, a water reducing component, a crack resistant component and a regulation component in a certain weight proportion. The preparation method specifically comprises the following steps: A, adding the gelatinization component, the expansion component, the active doped material, the crack resistant component and the water reducing component in a ball-mill in a designed mass ratio for commonly mixing and grinding, so as to obtain a even powder material; B, at room temperature and normal pressure, grinding until the Blaine specific surface of the material is not less than 350m<2>/kg; and C, evenly mixing and stirring the obtained in the step B with quartz sand prepared in a proportion at the room temperature and the normal pressure so as to obtain the grouting material. The method is practicable and is convenient for operation; the grouting material has high early strength and micro-expansion, thereby effectively compensating the hydration shrinkage of a cement-based material, obviously improving the adhesive strength of an anchor rod and a periphery base, effectively protecting the anchor rod from being corroded and prolonging the service of the anchor rod.