767 results about "Design stage" patented technology

The invention relates to a dam safety intelligent monitoring and pre-warning system based on full life circle and a method thereof, and belongs to the intelligent monitoring and pre-warning field of hydraulic and hydro-power engineering safety. By taking the full life circle of a high arch dam as a main line, a three-dimensional digital technology as a foundation and a building information model as a core, a full dam information model (DIM) including an overall three-dimensional structure of high arch dam concrete and foundation and construction process information are established, and an intelligent technology is applied by an intelligent high arch dam construction information platform for quality management and dynamic analysis control based on DIM development, so that the high arch dam construction such as application of essential data in the design period, full-process monitoring in the construction period and all-around monitoring and safety assessment and pre-warning analysis evaluation in the operation and management period of the high arch dam is realized, refine management and control on the high arch dam are realized, a foundation is provided for the safety management of the high arch dam, and safe operation in the whole life circle of the high arch dam is guaranteed.

Provided is a device capable of generating test patterns even after the design stage. The area of a circuit which is included in the device and unnecessary during normal operation can be reduced. The device includes a first circuit and a second circuit. The second circuit includes a plurality of third circuits, a plurality of fourth circuits, and a fifth circuit and has a function of generating a signal for testing operation of the first circuit and a function of operating as part of the first circuit. The fourth circuit has a function of storing a first data and a function of storing a second data. The fifth circuit has a function of writing the first data to the plurality of fourth circuits, a function of writing the second data to the plurality of fourth circuits, and a function of reading the second data from the plurality of fourth circuits.

Provided is a device capable of generating test patterns even after the design stage. The area of a circuit which is included in the device and unnecessary during normal operation can be reduced. The device includes a first circuit and a second circuit. The second circuit includes a plurality of third circuits, a plurality of fourth circuits, and a fifth circuit and has a function of generating a signal for testing operation of the first circuit and a function of operating as part of the first circuit. The fourth circuit has a function of storing a first data and a function of storing a second data. The fifth circuit has a function of writing the first data to the plurality of fourth circuits, a function of writing the second data to the plurality of fourth circuits, and a function of reading the second data from the plurality of fourth circuits.

A control for an electric motor is utilized to avoid operation in or near the resonance frequencies for the electric motor and its associated system components. The resonance frequencies can be identified experimentally at the design stage, or during operation of a component and electric motor. During start-up, shutdown or frequency adjustment, the control drives the speed through the resonance frequency zones more rapidly, and also avoids operation in or near those resonance frequencies during steady state operation. In disclosed embodiments, the electric motors are associated with fans, pumps and compressors in a refrigerant system.

The present invention discloses a helicopter aerodynamic layout optimization method capable of reducing the adverse effect of aerodynamic interference. According to the method, aiming at the defects of a wind tunnel test and a CFD method and based on a discrete vortex method and a surface element method, a coupled aerodynamic interference high-precision analysis model for a helicopter is set up, so that the influence of aerodynamic interference on the helicopter can be considered only by simulating calculation without carrying out the wind tunnel test; compared with the CFD method, the method has the advantages of greatly reducing the requirements of a simulation model for computing resources and shortening computing time. In order to further reduce calculated amount and a optimization region, a helicopter fuselage shape parameter model is set up by a parametric method and a combined optimization method based on an agent model is adopted, so that the optimal helicopter aerodynamic outline and layout are obtained and the purpose of reducing aerodynamic interference to improve the flight characteristics of the helicopter is achieved. The helicopter aerodynamic layout optimization method can be applied to the conceptual design phase of the helicopter so as to improve the flight characteristics, the balancing characteristic, stability and manoeuvrability of the helicopter.

The invention discloses a system for evaluating the performance of a chip through the collaboration of multiple processors. The system comprises an open short circuit detection module, a USB communication processing module, a PMU control module, a signal scanning module, a voltage control module, a frequency measurement module, a test index evaluating module and an expansion measurement module. The performance indexes and the parameters of multiple chips are controlled to be tested and evaluated on the research and design stage, PC controlled software is taken as a man-machine interface, multiple types of index tests are integrated on one system through synchronous testing to test and evaluate the chip, and the testing efficiency is greatly improved.

The invention discloses a method for analyzing and predicting noise outside a car, which aims at overcoming the problem that the noise outside the car is difficult to be predicted in the developing and designing stage of the car product. The method comprises the steps of: 1) establishing an SEA model of the car body structure: dividing the car body into a plurality of structural sub-systems, and connecting all structural sub-systems according to the correlations; 2) establishing an SEA model for an external acoustic cavity of the car: establishing SEA models for the external acoustic cavitiesof the car at two sides and on the external surface of the car body in the SEA model of the car body; 3) determining the SEA parameter of the car body and the external acoustic cavity sub-system of the car: determining the mode density of each sub-system, determining the internal loss factor of each sub-system, and determining the coupling loss factor of all sub-systems; 4) determining the external excitation energy of the car body: determining the acoustic excitation energy of an engine cabin, determining the excitation energy of suspended engine, determining the excitation energy of unevenness of the road surface on the car body, and determining the excitation energy of the wind pressure on the external surface of the car body; and 5) analyzing and predicting the noise outside the car.

The invention provides a method and a device for creating a database table model. A demand analysis stage and a model design stage before a target database is created can be substantially shortened, a standard database table model can be quickly established, data loading efficiency is improved, and data warehouse construction is quickened. The method for creating the database table model comprises the following steps: storing source table information which is required for creating a target table and is obtained from a dictionary table of a source database; converting a source table field name and a source table field type to obtain a target table field name and a target table field type which can be identified by the target database; obtaining a corresponding target table name from source table identification information, and obtaining a table establishing code of the target table according to the target table name, the target name field name, the target table field type, a source table field description and a source table description; and executing the table establishing code to generate an integral target table model.

The invention discloses an automobile panel die design method, which comprises the following steps of: (1) establishing a corresponding theoretical model according to the geometrical structural characteristics of an automobile panel; (2) removing the structural characteristics unrelated to the deformation of a die cavity surface from the theoretical model; (3) establishing a finite element model according to the theoretical model simplified by the step (2), and simulating an automobile panel die molding process; (4) calculating the deformation of the die cavity surface after the simulation byusing a computer; (5) performing compensation design and amendment on the theoretical model obtained by the step (1) based on the deformation of the die cavity surface, thereby obtaining a model of an actual die to be machined; and (6) manufacturing the actual die according to the model obtained by the step (5). In the method, corresponding deformation compensation can be performed on the die cavity surface in a design stage so as to offset the influence of the deformation of the actual die, increase the joint degree of the die cavity surface, make the die can be designed and machined in place once, further shorten a die debugging period and reduce the manufacturing cost of the die.

A train control dynamic message coding method can reduce the message coding links in the design stage and save message storage space and omit part of the links of message management to promote the running efficiency of train. The technical proposal is that the method comprises the following steps of dynamic coding design and responder message processing; the dynamic coding design comprises the following steps in specific that the system is collocated with a datasheet; a station static datasheet, a route measurement table, a track sectional table, a responder location table and a long-short linked list are processed; based on the station route condition and responder location, the correspondence between the responder and the route is established and every responder is separately corresponding to difference route and forms circuit parameter packets according to the design principle; the parameter packets comprise a responder link packet, a circuit velocity packet, a circuit slope packet, a track sectional packet, a reverse operational packet, a large-sized switch packet and a shunting danger packet.

The invention discloses a system and method for prefabricating and installing an informatization whole-lifecycle pipeline. The method comprises the following steps of outputting an ISO-IDF (International Standard Organization-Integrated Data File) interface file in a design stage, reading coordinates and data in an IDF, and forming a prefabricated pipe section package; creating a prefabricating plan according to the production ability, the productivity and the processing process of each production line, forming a work order, and generating barcode data; calculating the length of a pipe, creating CNC (Computerized Numerical Control) cutting data, length data and prefabricating data, automatically distributing the work order to each production line, and carrying out the production process tracking and the state tracking; and scanning a barcode once by using a scanner, wherein the scanning shows that a corresponding working procedure is completed and qualified, real-time stage variation exists in a database after each scanning, and thus the production process and the state of the pipe can be queried in a tracking way. According to the system and method disclosed by the invention, the organic integration of whole-lifecycle information during a designing, prefabricating and installing process of a pipeline can be reached, and the purposes of data search, resource sharing and information communication are realized.

The invention relates to development of a novel test bed for a leaf spring for an automobile suspension. The test bed is characterized in that the test bed can accurately simulate suspension leaf spring stiffness performance and perform fatigue life tests. The test bed can accurately extract a mounting hard spot of the leaf spring and accurately simulate an actual automobile mounting environment, the leaf spring is mounted through front and back lug supports, stress and jump of the leaf spring during loading completely conform to the actual automobile state, so that the actual stress of the leaf spring is simulated accurately, and the accuracy of the leaf spring bed tests is improved. The novel bed can quickly and accurately extract leaf spring performance data and perform fatigue tests at the automobile design stage and precisely simulate the motion track and stress of the leaf spring in an actual working condition; the test equipment is applicable to various leaf springs, integrates a static stiffness test and a fatigue test of the leaf spring, accurately reflects the problem about design of state leaf springs and can assist an automobile enterprise in discovering problems at the design stage to a great extent, the product quality is improved, the whole automobile development period is shortened, and the cost and risks are reduced.

The invention discloses a method for shortening verification time of hardware Trojan in an integrated circuit test. A special structure comprises a gate cell and a multi-way switch, wherein the multi-way switch has a test input signal TI and a Trojan test mode enabling signal EN; the gate cell is used for performing logical adhesion with target nodes in the tested integrated circuit, and the type of the gate cell is decided by occurrence probability 0 and 1 of the nodes; the special structure MFTD is inserted by the following steps of: firstly, setting a probability threshold value Pth; classifying all nodes of the tested integrated circuit into the nodes of which the overturning probability is greater than the Pth and the nodes of which the overturning probability is less than the Pth; and then inserting the special structure MFTD by circularly selecting the target nodes until the overturning probability of all the nodes is greater than the Pth. According to the invention, the MFTD is inserted into the design stage of the integrated circuit, so that the activation degree of the hardware Trojan is effectively improved in the test, and the verification time of the hardware Trojan is shortened.

The invention provides a reliability design optimization method for an avionic device. By means of the reliability design optimization method for the avionic device, the reliability index of the device can be practically and effectively promoted in the design stage. According to the technical scheme, the method comprises the following steps that three-dimensional digital prototype modeling is conducted according to an avionic device design scheme; on the basis of a three-dimensional digital prototype, environmental stress digital prototype modeling is conducted according to a device working load, an environmental load and design information relevant to device characteristics, and a model is corrected and verified; thermal environment stress, mechanical environment stress and the like of the avionic device are analyzed by referring to environmental conditions, environmental stress weak links of the device are searched, and corresponding avionic device design optimization is conducted; a fault physical digital prototype model is built, environmental stress analysis results are introduced to conduct device fault risk prediction, avionic device design optimization is conducted aiming at the reliability weak links occurring in the analysis process, and the reliability level of the avionic device is evaluated according to the optimized fault risk distribution situation.

The invention relates to a method for determining the shrinking percentages of an investment pattern precision casting mold. The method comprises the steps of (1) establishing numerical analysis models for various operation stages of investment casting, (2) taking the analog output of a previous numerical analysis model as the analog input of a next numerical analysis model, establishing an error flow of the whole process and obtaining the final casting simulation deformation result, (3) performing reversible deformation to a mold design stage from the final casting simulation deformation result and determining the profile shrinking percentage of each key dimension. Compared with the prior art, the method has the advantages that the error flow is established or the error evolution of the key dimensions, more accurate and detailed shrinking percentages can be obtained based on the backtracking of the error flow, and the design detail accuracy of the mold design can be enriched; besides, pre-deformation is performed on the error evolution of the whole process of the castings at the source of the mold design, and therefore, the correction work on the castings in the subsequent steps can be saved, the workload is saved and the precision of the castings is improved.

The invention relates to an aircraft avionics technology, in particular to an avionics system digitalized design verification system and a method. The system comprises a BCMP simulator, a MC simulator, an aircraft member simulator, a display device simulator and an OFP emulator. The invention comprises the following design steps such as POP design, system ICD design, each aircraft member simulator design and BCMP simulator design and the like, which can provide digitalized design tools for aircraft design stage, verify the top-level design without verification and modification at the uniting and adjustment stage after the aircraft members are developed, and greatly reduce cost and time of the design, verification and modification of the top-level design; moreover, pilots can intervene in advance in the prior period of model number design, thus evaluating the overall design of the avionics system and shortening model number development cycle.

The invention provides a model-based gasoline engine calibration method, belongs to the technical field of gasoline engines, and designs and develops a statistical model based gasoline engine calibration method mainly for a dynamic property optimized calibration process of a gasoline engine. The model-based gasoline engine calibration method comprises the following steps: (1), design of test operating points, (2) establishment of a mathematical statistics model and (3), optimization of calibrating procedure design, wherein firstly, relatively fewer test points can be selected in a test design phase so as to reduce workload; then an engine statistical model is established with a mathematical statistics method after related data are acquired; and finally, optimized calibration is performed on the basis of the statistical model. Under the premise that the performance of the gasoline engine is improved without loss of calibration accuracy, the model-based gasoline engine calibration method has the advantages as follows: time is saved, the cost is reduced, the output torque is increased, and the problems that the traditional manual calibration method is time-consuming, labor-consuming and low in efficiency and the conventional automatic optimized calibration equipment is complicated in technology and expensive are solved.

To provide a quality control system of a printed board for realizing efficient quality control.An imaging means picks up images of a printed board in each process in a series of processes for soldering components on the printed board. An image storage means stores (accumulates) the picked-up images in each of processes so that they may be correlated. An inspection means inspects the solder mounting quality from the picked-up image of the final process. Then, if a failure is detected by inspection, a candidate event selecting means selects one or more events which may be a cause of the failure among the events which may be generated in designing steps or an intermediate processes in manufacturing. An event analyzing means determines the degree of occurrence of each of candidate events by referring to the picked-up images in the intermediate processes. A cause analyzing means estimates the cause of the failure on the basis of combinations of the degree of occurrence of each of the candidate events.

A new and/or improved method, apparatus and/or system is disclosed which aids in extending correct behavioral models to include fault modes and in fault mode analysis of components and/or systems in simulated model environments, including, e.g., FMEA and FMECA and diagnostic fault tree generation.