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82 results about "Previous generation" patented technology

Intelligent optimization-based camera calibration method

InactiveCN102509304AHigh precisionInitial value calculation is simpleImage analysisAlgorithmAngular point
The invention discloses an intelligent optimization-based camera calibration method, which comprises the following steps of: obtaining pixel coordinates of feature points of an image by adopting a harris sub-pixel angular point extraction method; calculating the initial values of internal and external parameters according to the pixel coordinates of the image and corresponding coordinates in the world coordinate system; initializing a particle swarm, randomly generating d particles evenly distributed around the initial values, and forming an i*d dimensional particle swarm matrix; taking an initial particle swarm as a current-generation optimal local matrix, calculating the fitness functions of particles of the initial particle swarm, and selecting and taking a particle with the minimal fitness value as the optimal particle; and renewing the particle swarm, calculating the fitness values of the new particle swarm, comparing and replacing with the previous-generation optimal local matrix, obtaining a new-generation optimal local matrix, then, obtaining a new optimal particle, and meanwhile, calculating and renewing the values of external parameters (R and T). The intelligent optimization-based camera calibration method has the advantages that: a quantum particle swarm intelligent optimization algorithm is introduced into camera calibration; and the accuracy is higher, the calculation of the initial values is simple, and the convergence rate is fast.
Owner:JIANGNAN UNIV

LSSVM annual electricity consumption prediction method based on ant lion optimization

The present invention relates to a kind of LSSVM annual power consumption prediction method based on antlion optimization, the annual power consumption prediction method comprises the following steps: determine the input variable of least square support vector machine (Least Square Support Vector Machines, LSSVM) prediction model; Initialize the antlion optimization algorithm; calculate the fitness value of the initial antlion to obtain the initial elite antlion; update the position of the ant, calculate the fitness value of the current antlion, and compare it with the fitness value of the corresponding antlion to determine whether to update the antlion Lion position; compare the fitness value of the antlion after the updated position with the fitness value of the previous elite antlion one by one, keep the antlion corresponding to the smaller fitness value, and obtain the elite antlion of this iteration; judge whether The maximum number of iterations is reached, if yes, then output the location of the elite antlion and the corresponding predicted value of annual electricity consumption, if no, continue to iterate. Compared with the prior art, the present invention has the advantages of higher prediction accuracy and higher prediction efficiency.
Owner:SHANGHAI UNIVERSITY OF ELECTRIC POWER

Improved full-automatic threading apparatus

ActiveCN103825227APrevent clumps from knottingSolve problems encountered in actual useApparatus for laying cablesElectric machineTransmitted power
The invention discloses an improved full-automatic threading apparatus, comprising an air feeding mechanism, a lead tube, a take-up and pay-off mechanism, a guide line, a bullet, a motor, a limiting shutdown assembly, and a control system, wherein the air feeding mechanism is externally connected with an air compressor and transmits power to threading; the lead tube is arranged inside the air feeding mechanism; the take-up and pay-off mechanism corresponds to the position of the rear end of the lead tube; one end of the guide line is fixed and wound on the take-up and pay-off mechanism and the other end penetrates to an air outlet of the air feeding mechanism through the lead tube; the bullet is connected to one end of the guide line penetrating out of the lead tube; the motor provides take-up and pay-off power; the limiting shutdown assembly is arranged at the front part of the air feeding mechanism and connected with the front part of the lead tube. The previous generation of equipment is modified and innovated, the functions of paying off and taking up a clutch structure, wireless remote control and the like are added, the improved full-automatic threading apparatus is more reasonable to use, simpler and more convenient to control, the motive power mode, the original limit mechanism and the structure of the original wire-draw plate are also optimized, an excellent limiting shutdown function and the functions of fairing lines, arranging lines and paying off and taking up lines are achieved, and winding and knotting of the guide line in the take-up and pay-off processes are effectively prevented.
Owner:谢位强

Mycoplasma bovis attenuated strain and application thereof

The invention discloses a mycoplasma bovis attenuated strain and application thereof. The mycoplasma bovis attenuated strain is prepared by the following steps: A. a mycoplasma bovis virulent strain is separated and determined: by pathogeny separation culture and PCR (Polymerase Chain Reaction) detection, the pathogeny is determined to be mycoplasma bovis; B. the mycoplasma bovis virulent strain is cultured: the mycoplasma bovis which is obtained by separation is inoculated with a liquid drug culture medium, and is then cultured in an incubator, wherein the culture medium becomes bright yellow from red, and the previous generation of bacterium liquid of 1mul is taken for inoculating PPLO (pleuropneumonia-like organism) culture medium and culturing; C. the full attenuation of mycoplasma bovis can be shown by the experiments, and by the detection of morphology, and the generation 150 of strain Mbov HB0801-150.2 cultured by mycoplasma bovis Mbov HB0801 can be verified by the experiment result; and D. the preservation number of the mycoplasma bovis Mbov HB0801-150.2 is CCTCC M20111102. The invention has good vaccine development prospective, wide clinic application value, low cost and small irritant to animals, and can produce huge economic benefits and social benefits.
Owner:HUAZHONG AGRI UNIV

Multi-objective optimization design method based on vehicle body section parameterization

The invention discloses a multi-objective optimization design method based on vehicle body section parameterization. The multi-objective optimization design method comprises vehicle body section parameterization modeling and vehicle body section multi-objective optimization. The method comprises: according to cross-section input of a vehicle body, establishing a lap joint of a main section of a vehicle body parameterized model, establishing an external characteristic model of the parameterized vehicle body according to modeling CAS data, establishing a detailed parameterized vehicle body modelby means of a previous generation of vehicle body finite element model or competitive vehicle body data, and recording variables of the main section of the vehicle body to complete vehicle body parameterized modeling; parameterization model, finite element mesh division of the DOE test matrix is completed. solving the test matrix finite element model one by one to obtain the mass, modal, torsional rigidity and bending rigidity of the vehicle body, establishing a response surface approximation model, and carrying out optimal solution on the size of the main section of the vehicle body on the premise of ensuring that the weight is not increased according to the approximation model to obtain the optimal rigidity performance of the vehicle body.
Owner:CHINA FIRST AUTOMOBILE

Breeding method capable of improving egg yield of muscovy ducks

The invention discloses a breeding method capable of improving the egg yield of muscovy ducks. The breeding method comprises the following steps of early-stage primary election, wherein a high-qualitypopulation are selected in young ducks according to the body-size healthy and strong degree in proportion; first-time egg laying selection, wherein according to the whole-period egg production numberof the previous generation and family information, the breeding values of individuals in the current generation are calculated, and high-egg-yield and high-breeding-value male and female ducks are selected and remain in proportion; egg production determination, wherein when the female ducks start laying, the number of the qualified eggs laid by each female duck individual is recorded; second-timeegg laying selection, wherein according to the egg yield of the female ducks in the current generation and the genealogy information, high-egg-yield and high-breeding-value male ducks and female ducks are selected and remain in proportion; family building, a full-sib family is built by the male ducks and the female ducks in proportion, the next generation is bred, and the above steps are repeated. The breeding method has the advantages that the contradictions between subculture and egg laying selection are well solved, genetic contributions on the egg yield in the later egg laying period aretaken into account, the breeding efficiency is improved, and improvement of economic benefits is facilitated.
Owner:WENS FOOD GRP CO LTD +1

Quantum chemistry reaction optimization multi-relay selection method of cognitive relay network

ActiveCN107454604ASolve the problem of multiple relay selectionFast convergenceNetwork planningHigh level techniquesChemical reactionCognitive systems
The invention provides a quantum chemistry reaction optimization multi-relay selection method of a cognitive relay network. The method comprises steps of: 1, establishing a cognitive system relay selection model; 2, initializing a quantum molecule set and a system parameter; 3, evaluating the potential energy of all quantum molecules in the set and selecting the measurement state of the quantum molecule with the lowest potential energy as a global optimal solution; 4, arranging the kinetic energy of quantum molecules in a descending order, and performing decomposition reaction, invalid collision, and synthetic reaction; 5, evaluating the potential energy of newly generated quantum molecules, and if the minimum potential energy of the newly generated quantum molecules is less than the minimum potential energy of the previous generation, marking the newly generated quantum molecules as a new global optimal solution; and 6, if the number of iteration times is less than a preset maximum number of iteration times, returning to step 4, otherwise, outputting the global optimal solution. The method balances the primary user constraint condition and non-primary user constraint condition of the cognitive relay network, and chooses a relay selection scheme that maximizes the system throughput based on a quantum chemistry reaction mechanism.
Owner:HARBIN ENG UNIV

Power system optimal power flow method based on feedback learning cuckoo algorithm

The invention makes a request of protecting a power system optimal power flow method based on a feedback learning cuckoo algorithm. The method comprises: a power system optimal power flow model is established and a correlation algorithm parameter is set; original data are inputted and an initial population is generated; power flow calculation is carried out by using a Newton-Raphson method to obtain voltages of all nodes and power distribution in a power grid; fitness function values of all individuals in the population are calculated, and if the fitness value of a new individual is smaller than that of a previous generation individual, the new individual is used for replacing the previous generation individual; statistics of the number of the new individuals superior to the previous generation individual in all populations is carried out to obtain a population improvement rate that is used as a feedback value; a global optimal individual is kept and the populations are updated based on an updated formula of a cuckoo search algorithm; and whether a termination condition is met is determined; and if so, iteration is stopped and a final result is outputted. With the method, the generation fuel cost and the voltage deviation objective function are reduced; and the operating cost of the grid can be reduced based on high security and reliability.
Owner:CHONGQING UNIV OF POSTS & TELECOMM

Multi-target frequency spectrum allocation method based on quantum flower pollination search mechanism in cognitive heterogeneous network

ActiveCN106658524AIncrease Spectrum EfficiencySolve the multi-objective spectrum allocation problemNetwork planningFrequency spectrumSelf-pollination
The invention relates to a multi-target frequency spectrum allocation method based on a quantum flower pollination search mechanism in a cognitive heterogeneous network, and the method is realized based on a multi-target quantum flower pollination search mechanism. The method comprises the steps that the wireless access network perception module in a base station perceives network information; (2) a network reconstruction management module performs multi-granularity channel division on the frequency spectrum resource; (3) a quantum pollen set including P quantum pollens is initialized; (4) each individual pollen in the pollen set is mapped as a frequency spectrum allocation matrix to be corrected; (5) the transformation probability of cross-pollination and self-pollination in the quantum flower pollination search mechanism is set; (6) the new generation of pollen set and the previous generation of pollen set are mixed; (7) the appropriate pollens are selected from Pareto front-end solutions and mapped as the frequency spectrum allocation matrix; and (8) the network reconstruction management module partitions the optimal allocation matrix. The problem of multi-target frequency spectrum allocation can be solved so as to enhance the utilization rate of the frequency spectrum.
Owner:HARBIN ENG UNIV

Method for solving node impedance matrix of electric system on basis of Gaussian elimination method of sparse symmetric matrix technology

The invention belongs to the field of power system analysis and computing and discloses a method for solving a node impedance matrix of an electric system on the basis of a Gaussian elimination method of a sparse symmetric matrix technology. The method mainly comprises the following steps that a node admittance matrix Y is formed; the matrix Y and a matrix En form an augmented matrix Bn=[YEn]; elimination is carried out on the matrix Bn according to the spare symmetry to obtain Bn(n-1)'=[Y(n-1)'En(n-1)']; according to Y(n-1)'Zn=En(n-1)', sparseness and symmetry, elements above and on the left of a diagonal element Znn of a matrix Zn are solved; a matrix Y(k-1)' is obtained according to the Y(n-1)'; elements above and on the left of a diagonal element Zkk of the matrix Zk are obtained according to Y(k-1)'Zk=Ek(k-1)', sparseness and symmetry. By the utilization of the symmetric sparseness, all invalid computation of the previous generation process is avoided, and computation of about 50% of nonzero elements is reduced; by the utilization of the characteristics of the E matrix element structure and the sparseness of upper triangle elements, the elements of the matrix Zk are obtained in a back substitution mode according to a symmetry mode, and back substitution computation is greatly accelerated. The method can check IEEE-30, -57 and -118 node systems and the like, and the computation speed for the IEEE-118 node system can be improved by 96-97% compared with a traditional Gaussian elimination method and an LDU triangular decomposition method.
Owner:NANCHANG UNIV

Calibration method of camera

ActiveCN102376093AImprove stabilityCalibration results are stableImage analysisNew populationCalibration result
The invention provides a calibration method of a camera. The method comprises the following steps: S1. calibrating and acquiring a one-dimensional coordinate and a two-dimensional coordinate of each vertex of an image for the shoot image; S2. setting differential evolution parameters and initializing the population; S3. updating the current population individuals and acquiring a new population; S4. calculating the fitness of the individuals of the new population according to the one-dimensional coordinate and the two-dimensional coordinate; S5. calculating the current generation optimal position of the new population according to the fitness; S6. adding 1 for the non-updated times num of the optimal position if the difference value between the optimal position of the current generation and the optimal position of the previous generation is less than the threshold; S7. selecting randomly the individuals with the individual serial number 1 to m/5 in an individual space which distributes randomly again; S8. executing the step S3 to S7 repeatedly if the differential evolution generations do not reach the maximal evolution generations, or taking the camera parameters corresponding to the current optimal position which reaches the optimal evolution generations as a calibration result of the camera. Through the method provided by the invention, the system error can be reduced, the stability is good, and the anti-interference capability is high.
Owner:TSINGHUA UNIV

Power distribution network feeder automation terminal configuration method based on multiple intelligent algorithms

The invention discloses a power distribution network feeder automation terminal configuration method based on multiple intelligent algorithms. The power distribution network feeder automation terminalconfiguration method comprises the following steps: (1) inputting data required by power distribution network feeder automation terminal configuration; (2) randomly generating a plurality of feeder automation terminal configuration schemes to form an original population; (3) calculating the fitness of each individual in the population; (4) selecting an individual with the minimum objective function value in the current population, and updating a historical optimal solution; (5) judging whether a set number of iterations is reached or not, if yes, outputting a current historical optimal solution, and ending optimization; if not, executing the step (6); and (6) performing operation according to the optimization rules of different intelligent algorithms, and generating a new population on the basis of the previous generation of population. And then skipping to the step (3). The power distribution network feeder automation terminal configuration method can provide a more scientific and reasonable power distribution network feeder automation terminal configuration scheme, and can avoid the situations of feeder automation terminal configuration redundancy, investment waste and the likeon the premise of ensuring that the power supply reliability reaches the standard.
Owner:SOUTH CHINA UNIV OF TECH

Improved clamping mechanism of fatigue testing machine for in-situ imaging of synchronous radiation light source

The invention discloses an improved clamping mechanism of a fatigue testing machine for in-situ imaging of a synchronous radiation light source, which is arranged on a platform cylindrical base of the synchronous radiation light source. The improved clamping mechanism comprises a sample clamping unit and a plastic deformation additional adjusting unit, wherein the sample clamping unit is vertically arranged along the axle wire of the base of the fatigue testing machine and is divided into two parts of a lower clamping head section and an upper clamping head section, and the upper clamping head section is provided with the plastic deformation additional adjusting unit. Compared with a fatigue testing machine in the previous generation, the improved clamping mechanism of the fatigue testing machine for the in-situ imaging of the synchronous radiation light source, disclosed by the invention, is further improved, and the properties of buffer vibration attenuation and noise reduction of a system are increased; on the premise that load is fully enabled to be applied to a sample, the integral bearing performance of the fatigue testing machine is ensured; the plastic deformation additional adjusting unit can be used for adjusting the size of an applied force after plastic deformation of the sample happens in compaison with the fatigue testing machine in the previous generation, detailed problems in a test implementing process are more detailedly considered.
Owner:SOUTHWEST JIAOTONG UNIV
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