114results about How to "Eliminate randomness" patented technology

The invention discloses a vehicle gear-shifting quality evaluation testing method, which comprises the steps of: 1) at a vehicle gear-shifting quality evaluation testing preparation stage: establishing a vehicle database by adopting an SQL (structured query language) server; establishing a vehicle gear-shifting quality evaluation module by adopting MATLAB/Simulink and determining the core algorithm of the vehicle gear-shifting quality evaluation module; and selecting the type of a vehicle to be tested and a testing system to be used; 2) at a vehicle gear-shifting quality testing stage: conducting gear-shifting rule testing, Tip in testing, Tip out testing, Fast Off testing, brake control logic testing, operability testing, start testing, acceleration testing and driving during a traffic jam; and 3) at a vehicle gear-shifting quality evaluation stage: calling data of the vehicle database as data input of the vehicle gear-shifting quality evaluation model and obtaining an evaluation result through data processing and the like; and outputting the evaluation result a graphical user and result display interface. The invention additionally provides a vehicle gear-shifting quality evaluation testing system.

In cognitive radio, frequency spectrum sensing is an important premise and a core link for realizing the frequency spectrum dynamic access. The invention aims to provide a method for selecting a multi-user sensing channel in a cognitive sensor network, which comprises the following steps of: on an energy detection method, sensing normalized throughput acquired by a primary user channel from a maximized secondary user; using a detection time optimal scheme to budget the maximum throughput of all the secondary users and the selected channels of the secondary users; constructing a maximum throughput matrix; using a bidiagraph to express the channel selection problem under a multi-user multi-channel environment; converting a maximization and minimization problem into a unified minimization solution problem; and under the limit of target detection probability, adopting an improved Hungarian algorithm for the optimal selection of the sensing channel. By the method disclosed by the invention, the minimized throughput of the whole secondary user network can be greatly improved.

In estimation of an aberration in propagation of an ultrasonic wave from an aperture through an aberration path, the aperture is modeled as a plurality of sources and receivers. The frequency-domain magnitude of the aberration is estimated by normalizing the scattered signal power spectrum. The frequency-domain phase of the aberration is estimated by a recursion using cross spectra of signals at neighboring receivers.

In a video disk recording/playback device for converting a digital video signal or the like into high-efficiency coded data and recording the coded data on a video disk, or for restoring high-efficiency coded data recorded on the video disk and reproducing an output image, wherein said digital video signal is composed of a succession of video signals of a plurality of frames and including an I picture encoded within a frame, a P picture interframe coded by forward motion compensation with reference to said I picture and/or another P picture, and a B picture interframe coded by motion compensation in both directions with reference to said I and/or P pictures temporally preceding and succeeding the B picture, there are further provided a means for recording in an image information table set up on said video disk all of the start addresses of coded data representing selected images such as images to be retrieved and the start addresses of data containing information required for reproducing the coded data. With the above configuration, retrieval of all kinds of images of I, P, and B pictures is possible by recording all of the start addresses of coded data representing selected images such as images to be retrieved and the start addresses of data containing information required for reproducing the coded data in the image information table on the video disk.

The invention discloses a solar cell sheet electric sheet-splitting device. The solar cell sheet electric sheet-splitting device comprises a rack, a left sheet-splitting plate, a right sheet-splitting plate, connecting pull rods which are in slide fit with the rack, and a cam driving mechanism which drives the connecting pull rods to perform vertical reciprocating linear motion on the rack; one end of the left sheet-splitting plate is in slide fit with one side of the rack; one end of the right sheet-splitting plate is in slide fit with the other end of the rack; and the other end of the left sheet-splitting plate, the other end of the right sheet-splitting plate and one end of each connecting pull rod are hinged together. With the solar cell sheet electric sheet-splitting device of the invention adopted, the standardization and automation of solar cell sheet splitting can be realized, and randomness and errors caused by human can be eliminated, and sheet-splitting efficiency and sheet-splitting qualified rate can be improved.

The invention discloses multi-character selection breeding method of fish and shrimps. The method comprises the following steps of: firstly obtaining individual selection indexes and family selection indexes according to measured values of breeding target characters, then reserving stocks and hybridizing according to the selection indexes, building family mating groups and finally obtaining bred populations of the next generation. Moreover, when the individual selection indexes are obtained, the stock reservation rate and the heritability of breeding target characters are firstly calculated according to the measured values of the breeding target characters, expected selection intensity is calculated according to the stock reservation rate, then an expected selection response and a corresponding weighted value of each breeding target character are obtained according to the expected selection intensity, the heritability and the standard difference of a standardized breeding value, and finally the individual selection indexes are obtained by using the weighted value. Therefore, the subjectivity and the randomness during calculation of the weighted value are eliminated, the reliability and the accuracy of the breeding method are high, and the comprehensive genetic progress of multi-character selection is improved.

The invention discloses a secondary printing alignment method of a silicon solar cell. The method includes the following steps that a, a first screen printing plate with a first locating identification mark group is provided; b, the first screen printing plate is used for conducting primary printing through a first printing machine to obtain a silicon wafer with a first locating pattern group, and the first locating pattern group is matched with the first locating identification mark group; c, a second screen printing plate with a second locating identification mark group is provided, second locating marks of the second locating identification mark group correspond to first locating identification marks of the first locating identification mark group one by one; d, the second screen printing plate is used for conducting secondary printing on the silicon wafer printed for the first time in the step b) through a second printing machine, a silicon wafer with a second locating pattern group is obtained, the silicon wafer is also provided with the first locating pattern group, and the second locating pattern group is matched with the second locating identification mark group. By means of the method, precision and numerical valve location of locating patterns in secondary printing can be achieved, artificial randomness and numerical value judgment errors are removed, aligning precision is improved, overstriking ratio of silk-screen printing is reduced, and production yield is improved.

The invention relates to a method for controlling building thermal environment and building energy conservation in an air-conditioning building, which comprises the following steps: calculating out the comprehensive temperature average value and the corresponding wave amplitude value thereof of a horizontal external surface and the west wall external surface of a local building roof according to data information that the temperature average value t0 of the outdoor air in a local air-conditioning building in continuous 5 days in the lately 10 years is more than or equal to 28 DEG C; determining the thermal transmission resistance control index of a roof and a wall in the process of heat preservation in the air-conditioning building; determining the heat insulation and energy conservation three-element control index of the wall, the roof and a window in the air-conditioning building; and controlling the hot working performances of the wall, the roof and the window according to the heat insulation and energy conservation three-element control index. The method gives full play to the use value of the existing meteorological data, adopts a simple method to make the calculation of the control indexes of each energy conservation aspect simple and fast, and has small investment cost. The method applied to the designs of the building thermal environment and the building energy conservation can greatly improve the energy conservation efficiency of the building.

The invention discloses a cellular network positioning method and a cellular network positioning device. The cellular network positioning method comprises the following steps of: establishing wireless communication connection among a mobile unit to be positioned, a first positioning base station and a second positioning base station; detecting a first time difference from positioning signals emitted by the mobile unit to be positioned to the first positioning base station and a service base station of the mobile unit to be positioned and a second time difference from positioning signals to the second positioning base station and the service base station; performing Kalman filtering on the first time difference and the second time difference to obtain a first estimation value and a second estimation value; and calculating the position coordinate of the mobile unit to be positioned according to the pre-stored position information of the first positioning base station, the second positioning base station and the service base station, the first estimation value and the second estimation value. The cellular network positioning method can eliminate the randomness of NLOS error and the influence of positive deviation by performing Kalman filtering on the first time difference and the second time difference, and improve the cellular network positioning precision.

A method of estimating initial channel quality in a receiver when allocated a new channel in order to select an optimal codec mode in a multi-rate service is disclosed. One implementation initially fills the filter state with the first received channel quality measurement. Another embodiment proportionally fills the entire filter state with the calculated channel quality measurements. Yet another embodiment uses the hysteresis and threshold parameters in conjunction with the initial codec mode to calculate an initial fill value for the filter state.

The invention provides a community discovery method based on node intimacy and label propagation. The method belongs to the field of complex network analysis. The main technical feature of the methodcomprises the steps of estimating intimacy among adjacent nodes in a network through utilization of local topology information, and establishing an intimacy matrix based on the intimacy; estimating importance of the nodes in the network based on the intimacy matrix, and ensuring that the nodes are updated based on the importance in a descending order; in an iterative updating process, updating a label of each node as the label with the greatest influence in neighbors, and determining the unique label through calculation of the intimacy of the labels if a plurality of labels with the greatest influence exist; and when an algorithm satisfies a stop condition, jumping out of a label propagation process, and subjecting the nodes wit the same label to the same community. The method is reasonable in design; a high quality community can be rapidly detected; the robustness of the label propagation method can be effectively improved; and the method can be widely applied to fields such as protein function prediction, epidemic surveillance and electronic commerce precise recommendation.

The invention discloses a lock foot pile support structure for controlling tunnel initial support settlement convergence. The structure comprises an initial support in the tunnel grotto. A tilted lock foot pile is arranged at the outer wall of the initial support; the lock foot pile comprises a rotary jetting pile body, and the rotary jetting pile body is connected to an L-shaped steel core material. The other end of the L-shaped steel core material is connected with a connecting steel bar. The connecting steel bar is connected to an I beam steel frame of the initial support. The lock foot pile support structure for controlling the tunnel initial support settlement convergence has the advantages that the technical process is simple; the effected interference to the process conversion is less, the operation is convenient; the work efficiency is improved; the problems that the excavations of middle and lower steps cause the arch foot to be vacant, the side wall of the tunnel is unstable or the slippage and the grouting and anchorage effect of lock foot are poor are overcome; the stability of the palm surface, the deformation and settlement of the control cavern and the mechanized construction are achieved.

The invention belongs to the technical field of guide of parking lots and discloses a distributed intelligent guiding system and method for a parking lot. The distributed intelligent guiding system for the parking lot comprises a video monitoring module, an information collecting module, a parking space monitoring module, a central control module, an anti-blocking module, a path guide module, an early warning module, a parking charging module, a data protection module and a display module. The distributed intelligent guiding system and method for a parking lot in the invention can dynamicallymonitor the parking space and prevent the problem of battling for a parking space from occurring; the parking fee of an unlicensed vehicle generated in the parking lot is accurately worked out throughthe parking charging module; the problem that a sentry box terminal cannot normally complete the operations such as entrance and charging which affect the normal operation of the parking lot is solved through the data protection module when the parking lot has problems such as computer breakdown, abnormal power failure, database file damage and the like, thereby greatly reducing the loss of the parking lot caused by failures.

The present invention discloses an optimization preparation method of an experiment speckle field. The method comprises: selecting an optimal digital speckle field according to the computer speckle design program and the speckle quality assessment criterion, employing indirect preparation method such as transfer print (hydrographics transfer printing, heat transfer printing and the like), laser cutting, silk screen printing, photosensitive stamp, hollow template to transfer the integrated information of the digital speckle field to the surface of an object to be measured for providing high-precision and good-consistency speckle field for digital image relation measurement. Through optimization selection and direct transferring of the digital speckle field generated by the computer, the problems are solved that the digital image relation method measurement precision is undetermined caused by unstable quality of the speckle field and the traditional spraying making random speckle field method and others depend on the technicians' operation skill levels so as to ensure the reliability of the digital image relation method in the scientific research and the real engineering measurement.

The invention discloses a blast furnace molten iron sampling device, which comprises a fixing support frame (2) arranged at the molten iron groove part, wherein a rotating testing gun (5) is arranged on the fixing support frame (2); the end part of the rotating testing gun (5) is provided with a sampler (1); when the rotating testing gun (5) rotates, molten iron in the molten iron groove can be scooped up through a sampler (1) arranged at the end part of the rotating testing gun (5); the molten iron sample can be put into a sample collecting device (4). The blast furnace molten iron sampling device has the advantages that the sampling position and the insertion depth are relatively fixed; the danger of personnel performing high-temperature operation near the molten iron groove can be reduced; the random performance, the instability and the like of the conventional sampling mode are avoided.

The invention relates to an AC/DC hybrid microgrid topology design method based on an energy router. The design method can separate a plurality of AC/DC submicrogrids, and directionally simulate various microgrid topological structures at present and in the future, so as to meet various requirements of microgrid research, including an urban campus-type microgrid, island-type microgrid, and family-type microgrid. The design and implementation of AC/DC hybrid microgrid, on the one hand, can effectively eliminate the negative characteristics such as intermittency and randomness of renewable energy output, provide reliable power supply to distribution network, and improve the efficiency of energy utilization; On the other hand, facing the future, the microgrid will gradually change from a single regional power supply system based on electric energy conversion, storage and transmission to an energy hub with simultaneous integration of multi-energy conversion and interaction such as naturalgas and thermal energy utilization. The hybrid AC/DC microgrid based on the energy router can integrate multiple types of energy systems, which lays a foundation for this.

The invention discloses a household energy optimization system and method based on multi-user networking shared energy storage, and the system comprises a centralized shared energy storage module which consists of a power electronic device and a group of single storage batteries, and is used for the power utilization and energy storage of a plurality of household users; the internal power supply module which is formed by networking a plurality of home users and is used for direct energy circulation among different users; the energy optimization module which is used for investing, maintaining and managing the centralized shared energy storage module, maintaining the power balance of the internal power supply module and providing power utilization and energy storage optimization services forusers; the home user side module which is used for arranging a next-day home appliance power utilization plan and carrying out information exchange and online payment with the energy optimization module; the external power supply module which is communicated with external power supply equipment and used for supplying power to the whole system, energy storage equipment originally scattered in a user home is changed into centralized shared energy storage system coordination optimization, and compared with original scattered energy storage equipment, the total energy storage capacity is reduced,and the energy storage space utilization rate is increased.

The invention discloses a Paramics accurate traffic simulation scene construction method based on bayonet data. According to the method, an accurate simulation plug-in is constructed through secondarydevelopment of the Paramics plug-in; the method is used for eliminating the defect of Paramics random departure. the accurate departure module enables the departure instruction of the simulation vehicle to accord with the departure instruction in the vehicle travel path table; and the accurate travel path selection behavior module is used for eliminating the defect that the Paramics randomly specify the travel path selection behavior of the vehicle, so that the travel path selection behavior of the simulation vehicle conforms to the travel path exit sequence in the vehicle travel path table.And meanwhile, accurate traffic simulation scene construction is achieved through gate data extraction processing, the simulation scene has the advantages of accurate vehicle individual generation andpath selection behaviors, the randomness of simulating traffic generation and travel path selection behaviors in the prior art is eliminated, and the traffic simulation precision is improved.