35 results about "Topological transformation" patented technology

A data compression method for processing topological structures of various geometric models. A topological transformation is performed for a three-dimensional (3D) geometric model that is to be compressed, and a triangle mesh is generated. A conventional triangle mesh compression method is employed. Associated data required for the performance of a reverse operation for the topological transformation are prepared. As a result, topological data for the 3D geometric model is compressed. As needed, the data for the compressed triangle mesh and associated operation data are output. Furthermore, a necessary process (e.g., a compression process) is also performed for geometric data for the 3D geometric model, and the resultant data are either stored or output. For the decompression of compressed data, the compressed triangle mesh is decompressed using the method employed for compression, and a triangle mesh is generated. The associated data are then employed to perform the reverse operation for the topological transformation of the triangle mesh, and the topological data for the original 3D geometric model are recovered. If the geometric data are also compressed, they are decompressed and are employed with the topological data to recover the 3D geometric model.

The invention discloses a trust model-based cooperative communication method in a mobile self-organized network. In the method, cooperation of nodes is excited under wireless Ad Hoc network environment by establishing a global trust level and safe recommendation trust level-based trust model and utilizing a trust-fading punishment mechanism and a node salvation mechanism. In the mobile self-organized network, the node determines whether the monitored node participates in the cooperation by utilizing direct monitoring and comprehensive evaluation of monitoring information of other nodes, and a reconstruction mechanism is set for a malicious node, so that the node is newly added into the network and establishes connection with the other nodes; and based on the false recommendation, iterative convergence and punishment and salvation problem of a majority of trust models, the global trust level and safe recommendation trust level-based trust model is established, and a topological transformation-based recommendation trust computation method is brought forward; and in the trust varying process described by the trust model, the cooperation of the nodes is excited under the mobile self-organized network environment by using the punishment mechanism of an updating stage and the salvation mechanism of a reestablishment stage.

System and method for determining the presence of an object of interest in a target image. Regions of a target image may be located that match an object of interest, e.g., in a template image, with respect to various information, e.g., luminance, color and/or other types of boundary information. The invention includes improved methods for mapping point sequences (e.g., pixel sequences) or curves to new point sets or curves for curve matching. The method determines the presence of an object of interest in a target image despite of or using various types of topological transformations of the object of interest in the target image. One or more mapping operators are determined based on template curves and/or example target curves. Pattern matching is performed on one or more target images using the mapping operator(s) to generate pattern matching results, and the pattern matching results output.

Overloaded regions in the routing space of a physical network are resolved via a routing procedure composed of a topological routing phase and a geometric routing phase. The overloads are resolved in the topological routing phase where the constraints of routing are less prohibitive. Multiple topological transformations directed toward resolving the overloads are executed in the topological routing phase prior to a geometric arrangement being realized. The topological transformations may be applied concurrently by way of a multi-threaded embodiment of the invention.

The invention discloses an electric car segmented dynamic wireless power supply system with low receiving power fluctuation. The system is composed of a fixed-frequency high-frequency power supply, a primary side graded and controllable compensation capacitor, a segmented and controllable primary coil, a switching control switch, a secondary coil, a secondary side fixed compensation capacitor and an electric car load. On the condition that the working frequency of the power supply is not changed, it is guaranteed that the receiving power is always in a high level only through topological transformation of transmission coils and switching of compensation resonance capacitors, and it is guaranteed that when a receiving coil moves to the position between two primary coils, little receiving power fluctuation is generated. The problems that in an electric car, batteries are low in energy density and needs to be frequently charged, and an energy storage batteries are heavy and high in cost are solved, the requirement that electric energy is dynamically supplemented to the electric car in the driving process can be met, and the electric car can load few energy storage batteries or does not load the energy storage batteries by adopting the scheme.

The invention relates to a method for intelligently generating a Chinese character without a character library. A system is not provided with the character library but only a basic element library; and a task of solving mapping knowledge of the basic element of the Chinese character is decomposed into five steps by analyzing composition characteristics of the Chinese character. The method comprises the following steps of: reasoning a structure tree of the Chinese character according to input codes of the Chinese character; decomposing the Chinese character with a multilevel structure into a series of Chinese characters with a first-level structure by traversing the structure tree of the Chinese character; determining the size and position of external rectangles of compositions of the Chinese character by analyzing external rectangular puzzles of the compositions of the Chinese character; comparing the standard external rectangle of the basic element with the external rectangle of the basic element in the Chinese character to obtain the transformation coefficient of the basic element of the Chinese character; performing topological transformation on the basic element of the Chinese character to obtain the Chinese character; and therefore, the Chinese character is intelligently generated. The problem that the positioning size and the rectangle size of the external rectangle of each composition of the Chinese character cannot be determined by inputting the codes of the Chinese character in the prior art is solved; and the Chinese characters entering a computer are not limited by the character library any more.

System and method for determining the presence of an object of interest in a target data set. Portions of a target data set may be located that match an object of interest, e.g., in a template data set, with respect to various information, e.g., edge or boundary information. The invention includes improved methods for mapping point sets or curves to new point sets or curves for curve matching. The method determines the presence of an object of interest in a target data set despite of or using various types of topological transformations of the object of interest in the target data set. One or more mapping operators are determined based on template curves and/or example target curves. Pattern matching is performed on one or more target data sets using the mapping operator(s) to generate pattern matching results, and the pattern matching results output.

The invention discloses a variable-topology four-degrees-of-freedom parallel mechanism which comprises a rack, a movable platform and four branch chains between the rack and the movable platform, wherein two ends of each of the four branch chains are connected with the rack and the movable platform by virtue of a spherical hinge structure, structures of the four branch chain structures are completely identical, the four branch chains are rectangularly distributed between the rack and the movable platform; the fifth branch chain is arranged between the rack and the movable platform. The movable platform is controlled by virtue of the four branch chains to move, thus the variable-topology four-degrees-of-freedom parallel mechanism is simple in structure and easy to realize; the change of the degrees-of-freedom of the movable platform of the variable-topology four-degrees-of-freedom parallel mechanism can be completed by changing the fifth branch chain, the movable platform can be used as an end effector, and used for completing works such as grabbing, conveying and damping devices; by virtue of simple topological transformation, a multifunctional mechanism relatively has a practicability, so that the use efficiency of the mechanism is improved.

A service combination method for achieving meeting multiple performance index requirements simultaneously comprises the following steps: (1) constructing a service combination instance sequence set according to the functional requirements of a user service combination, (2) carrying out topological transformation on a service combination instance sequence according to a set method, (3) calculating the performance parameters of the service combination instance sequence, and (4) screening out a optimized service combination instance sequence meeting all the performance index requirements of the user service combination simultaneously from the service combination instance sequence set according to the set method. The service combination method can find the optimized service combination instance sequence efficiently, guarantees to meet the requirements of a user on the price, the reliability, the retardation and other service performance indexes of combination service simultaneously, and improves the service quality of complex service.

The invention discloses a control method of an electric vehicle short-segment dynamic wireless power supply system. The system is mainly composed of a frequency-adjustable high-frequency power source, transmitting terminal fixed compensation capacitors, square segmented transmitting coils, switching control switches, a square receiving coil, a receiving terminal fixed compensation capacitor and an electric vehicle load. In order to solve the problem that when a receiving coil is located between two transmitting coils, the receiving power is reduced due to the adoption of a single transmitting coil power supply mode, the transmitting terminal topological transformation and high-frequency power source frequency adjustment control method is provided. By the adoption of the system and the control method, it can be achieved that the electric vehicle continuously picks up energy in the driving process, the problem that the endurance of the electric vehicle is poor is effectively solved, and the method mainly solves the problem that when the receiving coil is located between the two primary coils, the receiving power is severely reduced.

The invention provides a method for rating of raw milk quality. The method for rating of raw milk quality comprises the following steps of determining fat content, protein content, fungimycin content, total bacterial colony content and impurity content of a raw milk sample, respectively carrying out normalization treatment on data of the fat content, the protein content, the fungimycin content, the total bacterial colony content and the impurity content through the existing neural network normalization method, drawing a radar map according to the treated data, carrying out cluster analysis of the treated data by the radar map, transforming the radar map into a pyramid form by a topological transformation method of mathematics, carrying out inverted normalization treatment on data of the pyramid form, and carrying out grading of the data of the pyramid form according to raw milk quality information needed actually so that rating of raw milk quality is realized. The method for rating of raw milk quality can realize concise and clear rating of raw milk quality by a three dimensional image, is reasonable and feasible, has a wide application scope and a high practical value, and is conducive to objective evaluation and selection given by consumers, enterprises and milk farmers on quality of raw milk and congeneric related foods according to vital interests.

The invention discloses a CAD (computer-aided design)/CAE (computer-aided engineering) integration method and a CAD/CAE integration system for a steel support structure of a nuclear power plant. The CAD/CAE integration system comprises a CAD system, a CAD/CAE integration tool and a CAE system, wherein the CAD system is used for generating a CAD model of a steel support structure, the CAD/CAE integration tool is used for searching CAD model data and converting the CAD model data into a command stream recognized by the CAE system, and the CAE system is used for receiving the command stream, reconstructing a CAE finite element model of the steel support structure according to the command stream and outputting the CAE finite element model. The CAD/CAE integration method and the CAD/CAE integration system have the advantages that the method and the system are capable of performing topological transformation on the CAD model by extracting key characteristic information in the CAD model, automatically generating a data format recognizable by CAE software and reconstructing the finite element model in the CAE software quickly finally; the CAD/CAE integration tool of the steel support structure is developed by the PML, so that zero-distortion conversion of the CAD/CAE model is achieved truly.

A machine-readable definition of a three-dimensional object is represented. A schematic view of the image in which elements of the three-dimensional object are defined by nodes and relationships between said nodes are represented by links is displayed. An image view of three-dimensional object is rendered to produce a two-dimensional view from a specified viewing position. Input data that selects one or more elements shown in the two-dimensional view is received. Nodes and links of the schematic view that correspond to the elements selected by the input data are identified and a topological transformation is performed to produce a modified schematic view. The nodes and links in the modified schematic view are positioned in substantially similar relative positions compared with their respective elements in the image view.

The invention discloses a method for expressing opportunistic sensor network connectivity by whole network connectivity. The method is applicable to practical application scenes such as environment monitoring and remote mountain region communication. For limitation of terrains, sensor networks are segmented into multiple regions; intra-region network connectivity is good; regions are disconnected; sensing data produced by the regions needs to be collected and transmitted through special mobile nodes; and therefore, the regionally disconnected opportunistic sensor networks are formed. According to the method, firstly, the key parameter--whole network connectivity capable of reflecting the network connectivity is defined according to the transmission characteristics of opportunistic sensor network sensing data; secondly, the whole network is periodically snapshot according to the topological transformation characteristics of the network; thirdly, an obtained snapshot set is converted into a sequential adjacent matrix set; and finally, the whole network connectivity is calculated through the sequential adjacent matrix set, wherein the whole network connectivity is used for expressing the connectivity conditions of the opportunistic sensor networks. According to the method, the transmission characteristics of the opportunistic sensor network sensing data are taken into consideration fully; and the connectivity conditions of the opportunistic sensor networks are accurately reflected by the whole network connectivity.

The invention discloses a blade design and manufacturing method of a Mobius strip plastic blade wind-driven generator. The method comprises the following steps: a. designing a Mobius strip blade, andsetting the size, band width and band thickness of the Mobius strip blade by determining the local wind speed and wind strength; b. carrying out simulation and optimization on the performance of the Mobius strip blade, and detecting the performance of the designed Mobius strip blade by means of modeling of 3D software and by using performance analysis software. The method has the beneficial effects that the traditional fan blade is changed into a Mobius strip by means of the rectification of a wind-driven generator blade, and the Mobius strip conforms to topological transformation, so that theMobius strip is not affected in any way when being used for collecting wind power even during rotating due to being blown by the wind; the Mobius strip can be completely manufactured by means of injection molding; furthermore, the problem that the service life of the Mobius strip is influenced in a long-term weathering due to the self properties can be reduced by polishing and filling a vacancy.

The invention provides a preparation method of nanowire-like Cu3V2O8-V2O5 composite powder. The preparation method comprises the following steps: dispersing Cu3V2O8 into an AgNO3 solution to obtain adispersion liquid; introducing nitrogen into the dispersion liquid for continuous bubbling; pouring the dispersion liquid into a quartz tube, performing a stirring reaction continuously under illumination, and then performing separation, washing and drying to obtain the nanowire-like Cu3V2O8-V2O5 composite powder. The preparation method has the following advantages: firstly, the nanowire-like Cu3V2O8-V2O5 composite powder can be prepared at room temperature with an illumination-liquid stirring method, the preparation method is simple, and a high-temperature and high-pressure environment is notneeded; secondly, in-situ topological transformation is taken as an idea, a surfactant and an organic solvent are not needed, and direct transformation of phase and morphology of the product are realized. The preparation period is short, the process is simple, the repeatability and the feasibility are high, and the method is quite economical, practical and suitable for mass production and preparation. First specific discharge capacity is as high as 1051.7 mAh/g, and the composite powder has excellent lithium storage performance.

The invention relates to a direct-current microgrid fault isolation method based on alternating-current circuit breaker removal. The method comprises the following steps of: 1, alternating-current circuit breakers are installed at the two ends of a circuit, and topological transformation is conducted on a VSC at the same time as follows: in six bridge arms of three phases of the VSC, two thyristors are used for replacing antiparallel diodes in an upper bridge arm and a lower bridge arm of any one phase, the two thyristors are conducted all the time, and thyristor conduction signals at the positions are cancelled after protection is started, for the remaining four bridge arms of the two phases, in any group of upper and lower bridge arm branches belonging to the two different phases, a thyristor is used for replacing an antiparallel diode, the thyristors at the two positions are conducted all the time, and thyristor conduction signals at the positions are cancelled after protection is started, for the remaining two bridge arms which are not operated and belong to different two phases, the antiparallel diodes in the two bridge arms are respectively connected with the thyristors in parallel, the conduction forward direction is opposite to the direction of the corresponding antiparallel diode, and after the protection is started, the two thyristors are always conducted.