704results about How to "Improve design quality" patented technology

A surface electrode (5) is installed on the light receiving surface of a solar cell element, the surface electrode (5) comprises three bus bar electrodes (5a) for extracting light-produced at the solar cell element to the outside and collecting finger electrodes (5b) connected to these bus bar electrodes (5a), and the bus bar electrodes (5a) are not less than 0.5 mm and not more than 2 mm in width and the finger electrodes (5b) are not less than 0.05 mm and not more than 0.1 mm in width. A high-efficient solar cell module can be obtained with substantially lowered resistance by increasing the number of bus bar electrode (5a) and thereby decreasing the lengths of the finger electrodes (5b).

An RTM molding method comprising disposing a reinforcing fiber substrate in a cavity of a mold consisting of a plurality of dies, clamping the mold, and thereafter injecting resin to complete molding, characterized in that divided areas with respect to the surface direction of the reinforcing fiber substrate are assumed, each divided area is one in which injected resin expands over the entire surface in the area and can be substantially uniformly impregnated in the thickness direction of the substrate, and resin introducing paths are formed for respective assumed divided areas for introducing the injected resin into the respective divided areas; and an RTM molding device. When a relatively large molded product is to be molded, a molding step from resin injection to impregnating/curing can be implemented at high speed without generating a non-resin-flowing area, thereby enabling a high-quality molded product to be produced free from voids, etc., with a molding time shortened and production speed and volume increased.

The invention relates to a wellbore trajectory control method which is mainly used for solving the problem that the existing wellbore trajectory control method can not well meet the design and control requirements of oil and gas drilling on a wellbore trajectory. The wellbore trajectory control method is characterized by comprising two parts, namely the design of the wellbore trajectory and the control of the wellbore trajectory. By adopting the method, the design and control requirements on the wellbore trajectory which can simultaneously limit the position and the direction of a target point under multi-constraint conditions can be met; and the design and control method is simple and practical, the optimization and the control of the wellbore trajectory are easy, the design efficiency and the quality of a well body can be improved, the time and the cost of drilling operation can be reduced, and the purposes of safe, fast and high-quality drilling and completion operations can be realized.

The present invention discloses a bridge three-dimensional model construction method based on the BIM. The method comprises the following steps: dividing objects of an whole structure of the bridge, and classifying the objects of the bridge in a normative manner; subdividing the bridge components into elements and primitives, parameterizing the elements and primitives, and formulating a parameter table corresponding to the geometric dimensions; carrying out assembly and positioning on the three-dimensional model of the bridge components, determining and defining element control points and relative spatial position relationships, assembling the elements into components, storing the components into an component template library, and establishing component control points; extracting three-dimensional route information of the project, and determining stake marks and the design elevation of the route; and assembling the component three-dimensional model, based on the route information, using positioning parameters to determine the location of the component model, and calling the type method, so that parametric assembly can be automatically carried out between components. According to the method disclosed by the present invention, by optimizing the bridge model, parameterization and standardization of the bridge components are realized, the modeling time is shortened, and the design efficiency and quality are improved.

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 present invention discloses a method for combinatorial layout design, in particular family mould layout design, using a computer. The method starts with receiving design specific parameters and information about moulding parts from user. A Genetic Algorithm module is then invoked to generate a population of layout designs which satisfies the design specific parameters. The Genetic Algorithm module first automatically generates a population of specially designed chromosome with three interdependent sessions. Crossover, mutation and replacement operation are applied on the population subsequently to evolve such towards a more optimal population over successive generations. In each generation step, a Genotype-Phenotype mapping module is utilised to decode the chromosome to corresponding layout design for fitness evaluation. A system for combinatorial layout design automation and optimisation using this evolutionary design approach is also disclosed in the present invention.

The invention discloses a three-dimensional garment modeling and pattern designing method based on draping. The method comprises the following steps of: reading a three-dimensional human model represented by a triangular grid to generate a three-dimensional garment model; generating a contour line of the three-dimensional garment model, and modifying the shape of the contour line; drawing suture lines on the surface of the three-dimensional garment model to divide the surface of the three-dimensional garment model into a plurality of areas of which each is a three-dimensional pattern; selecting a three-dimensional pattern, generating the three-dimensional grid corresponding to the three-dimensional pattern, converting the three-dimensional grid into a two-dimensional garment pattern, and setting a suture schematic drawing of the two-dimensional garment pattern; re-discretizing a boundary line of the two-dimensional garment pattern into a polygon consisting of straight line segments with uniform lengths, and triangulating the two-dimensional garment pattern; and computing the position of the triangulated two-dimensional garment pattern in a three-dimensional space to obtain a final three-dimensional garment model, and finally simulating hanging effects of three-dimensional garments. The method is high in speed and relatively higher in accuracy.

A flat-type image display, such as, a plasma display, a LCD display, an OLED display, etc., in particular, for improving a cooling efficiency of a display panel, various kinds of substrates and an image display element, within the thin-sized housing thereof, comprises: a display panel; a chassis, which supports the display panel from a rear surface side thereof; a front surface-side cover, which is provided on a front side of the display panel; a rear surface-side cover, which is provided on a rear side of the display panel; an image display element connected with the display panel; a display driver substrate, which is connected with the display panel, and on a surface of which opposite to the chassis are provided circuit parts thereof; a power source substrate, which supplies driving power to the display driver substrate and the image display element, and on a surface of which opposite to the chassis are provided circuit parts thereof; and a first insulator board, which is provided at a position opposite to the display driver substrates and the power source substrate of the chassis.

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 provides a synchronous detection test device for multi-item parameters of linear TBM hobs applied in the full-section hard-rock tunneling machine industry. The whole device consists of a self-counterforce frame, a regulate tool rest, an X-direction moving worktable, an X-direction linear guide rail, a Y-direction moving worktable, a Y-direction linear guide rail, an X-direction hydraulic cylinder, a rock sample, a hob, a four-rod guide mechanism, three-direction pressure sensors, a Z-direction hydraulic cylinder and the like, wherein the lateral movement direction of the rock sample is set as an X axis; the axial direction of the hob is set as a Y axis; the direction perpendicular to the surface of the rock sample is set as a Z axis; the rock sample is fixed on a trolley; the regulate tool rest is arranged on the four-rod guide mechanism; the X-direction moving worktable and the Y-direction moving worktable are arranged on a horizontal linear guide rail; the hob is arranged in a hob seat and is connected with the regulate tool rest through the three-direction pressure sensors; the rock sample is arranged and clamped on the X-direction moving worktable; and the three direction hydraulic cylinders are fixed with the fixed self-counterforce frame respectively. The device has the advantage of more precise function of simulating the process of breaking rocks through the hob, and is used for the synchronous detection of three-direction force, tool interval, penetration degree, wear degree, phase difference and other parameters of the hob in the states of linear paths and high-speed rotation of a plurality of hobs.

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 discloses an external scaffold intelligent design method based on BIM, and belongs to the field of buildings, and the method comprises the following steps: step 1, determining external scaffold design parameters; step 2, establishing a material component information base; step 3, reading the CAD elevation of the building structure; step 4, building a building structure model; step 5,inputting design parameters of the outer scaffold; step 6, parameter calculation, design and checking; And seventhly, the formwork is intelligently designed. According to the BIM-based external scaffold intelligent design method provided by the invention, the current traditional engineering structure analysis can be thoroughly changed; According to the low-efficiency mode of CAD design and CAD drawing output, outer scaffold structure stress analysis is automatically completed on the basis of outer scaffold modeling, automatic drawing output after three-dimensional model and formwork optimization design is generated, and huge and heavy work caused by traditional design change is solved in a one-key mode.

The invention relates to a 3D (three-dimensional) apparel grading method based on human body characteristics. The 3D apparel grading method comprises the steps of reading a 3D human body model; generating characteristic points and characteristic lines of the 3D human body model; calculating the size of the 3D human body model; reading a 2D (two-dimensional) apparel pattern; putting the 2D apparel pattern at the proper position on the 3D human body model to obtain the 3D spatial position of the 2D apparel pattern; calculating the relative position relationship of the boundary control points of the 2D apparel pattern and the 3D human body model; setting a grading size of the 3D human body model and calculating the grading differences; setting the grading datum points of the 2D apparel pattern; calculating the grading offsets of the boundary control points of the 2D apparel pattern, and updating the boundary shapes of the 2D apparel pattern; and adjusting the grading quantities of certain special control points according to the design requirement of the apparel pattern to obtain a final grading apparel pattern. According to the method, the design speed is fast, the efficiency is high, the degree of automation is high, the design process of the apparel is accelerated greatly and the design quality of the apparel is improved.

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.

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.

The invention discloses a self-adaptive calculation method for a full-speed closely-attaching running control curve of a rail transit train. The method includes the following steps that a train running path and a train full-speed running reference curve are determined; a train traction running curve is calculated; the intersection sections of the train traction running curve and other reference curves are calculated; a train cruising running curve is calculated; the intersection sections of the train cruising running curve and other reference curves are calculated; a train braking running curve is calculated; the intersection sections of the train braking running curve and other reference curves are calculated; and in the train running direction, the train full-speed closely-attaching running control curve is generated. By the adoption of the method, a project task period can be greatly shortened, the project construction schedule is accelerated, and a large amount of expenditure is saved; and the use period of train-mounted system equipment is prolonged, the repair and maintenance workloads are reduced, the comprehensive design quality and level of a rail transit project are improved, and effective realization of the line transportation capacity is guaranteed.

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 provides a universal erection load simulation device which comprises an erection load simulation device, a lower fulcrum moving device, an upper fulcrum moving device and a safety protection device; the universal erection load simulation device is mainly used in a vertical erection simulation test under the practical working conditions of idle load, full load and unbalance load to test and verify the erection time, the erection angle and the erection position accuracy, to test and verify the power matching of a power supply, an erection controller and an erection electric cylinder, to test and verify the performances of the pushing force, the operation speed, the level shifting stability and the gear shifting stability of the erection electric cylinder, and to verify the normal and abnormal power-loss brake performances in the erecting and leveling processes; the motion process of an erection mechanism is simulated, a motion parameter equation of each member is deduced, the overall process of change of the motion parameter is accurately reflected, the stress and the displacement of main stress parts of a launching vehicle are intuitively truly known and predicated, a weak link of a system is found out and improved, so that the requirements of rapidity, stability, reliability, safety and the like in the erection process of a guided missile are met.

The invention provides a method for obtaining a high-efficiency low-noise impeller of a centrifugal pump volute. Firstly main structure sizes: impeller inlet diameter, impeller outer diameter, blade number, blade thickness, blade inlet placing angle, outlet placing angle, blade wrap angle and blade length of a centrifugal pump impeller are obtained through a traditional method. The method includes: 1) measuring centrifugal pump constant performance of the impeller with the structure sizes; 2) predicting centrifugal pump unsteady performance; 3) performing internal flow field analysis and structural improvement on a centrifugal pump; 4) evaluating performance of the improved centrifugal pump, and testing H-Q, N-Q and h-Q performance curves, particle swarm optimization (pos) and program specification block (psb) variation curves; and 5) providing a novel improvement project according to analysis, and evaluating the performance of the centrifugal pump until an ideal centrifugal pump is obtained.