55results about How to "Solve evaluation problems" patented technology

The invention belongs to the simulation system and method of bogie of a high-speed train and discloses a coupling simulation system and method used for vibrating and loading a bogie assembly with multi-degree of freedom. A tension and pressure sensor and a displacement sensor are all mounted on servo hydraulic cylinders. An acceleration sensor is mounted on a six-degree-of-freedom excitation teststand. The tension and pressure sensor, the displacement sensor and the acceleration sensor are used for detecting stroke of a rod of the servo hydraulic cylinder, tension or pressure applied on the servo hydraulic cylinder and accelerated speed of the six-degree-of-freedom excitation teststand and feed back to a servo controller through PCI (peripheral component interconnect) 1716 of an AD board. An X-direction excitation hydraulic cylinder, a Y-direction excitation hydraulic cylinder and a Z-direction excitation hydraulic cylinder apply forces to the six-degree-of-freedom excitation teststand to simulate the six-degree-of-freedom movement. An X-direction force loading hydraulic cylinder, a Y-direction force loading hydraulic cylinder and a Z-direction force loading hydraulic cylinder apply forces to a train simulation device to simulate four-degree-of-freedom static and dynamic force loading, which is integrated with the six-degree-of-freedom vibration simulation to form the coupling simulation. The coupling simulation system has the advantages that redundant force and dynamic load interference factors are reduced, true coupling mechanics simulation environment is provided for the bogie of the high-speed train, and true and accurate detection is acquired in the state of the coupling environment.

The invention discloses a rapid prediction method for the impact of spaceborne microstrip antenna array thermal deformation on electrical performance. The rapid prediction method includes 1), determining geometric model parameters, material attributes and electromagnetic parameters of an antenna; 2), establishing a finite element model of an antenna structure, determining constraint conditions and calculating array thermal deformation of the antenna; 3), calculating structural deformation, center node offset and pointing deflection of antenna elements in the array antenna under the thermal-load environment; 4), calculating radiation pattern function of the microstrip antenna elements; 5), calculating spatial phase difference and actinal surface phase difference of every two neighboring antenna elements; 6), establishing a spaceborne microstrip array antenna electromechanical coupling model and drawing an antenna radiation field direction graph; 7), analyzing the impact of the thermal deformation of the antenna structure under the thermal-load environment on antenna radiation performance. The impact of the thermal deformation of the antenna structure on the antenna radiation performance can be evaluated rapidly, so that thermal design and structural design of the antenna are guided, development cost is reduced, and development cycle is shortened.

The invention discloses an intelligent ammeter provider multi-target integral evaluation method based on gray correlation degrees; the method comprises the following steps: suggesting an intelligent ammeter provider integral evaluation model so as to fully and objectively evaluate the intelligent ammeter provider; using a vector specification-based method to carry out dimensionless process for an index matrix, thus preventing inconsistent units and large magnitude order difference problems caused by different types of indexes; finally calculating the gray correlation degree, and converting the intelligent ammeter provider multi-target evaluation problem into correlation coefficient comparison. Compared with a conventional simple index weighting method, the intelligent ammeter provider multi-target integral evaluation method is more direct and scientific, can effectively solve the intelligent ammeter provider integral evaluation problem, can carry out multi-target integral quantification evaluation for a to-be-evaluated provider with obvious physics meanings, thus solving the problems that the multi-target evaluation is complex in indexes and strong in subjectivity; the intelligent ammeter provider multi-target integral evaluation method is high in evaluation accuracy, and scientific and objective in evaluations.

An altimeter detector belongs to the technical fields of detection measurement and test, and solves problems of single detection object, and inconsistent detection means and standards on different altimeters of an existing altimeter detector. The altimeter detector of the present invention uses a DSP digital signal processing circuit as a core device; the DSP digital signal processing circuit outputs attenuation control signal and delay control signal to a height simulation circuit, so as to control the height simulation circuit to generate a plurality of equivalent height radiofrequency signals corresponding to a plurality of heights to the altimeter; the DSP digital signal processing circuit acquires voltage current signal of the altimeter through an A / D converting circuit, and acquires digital signal of the altimeter and control signal output to the altimeter through an altimeter interface circuit. Application of the altimeter detector of the invention can realize detection on a plurality of altimeters, substantially increase altimeter test efficiency and bring convenience to test and maintenance of the altimeter.

The invention provides a character evaluation method and device. The character evaluation method comprises steps as follows: an evaluation instruction of a character input by a user is received; graphic information of the character is read according to the evaluation instruction; the character pattern is analyzed according to the graphic information, and written character pattern information of the character is acquired; a score value of the character is generated according to the written character pattern information and reference character pattern information. By means of the character evaluation method, an objective evaluation result of the written character can be obtained, the problem that the written character is evaluated according to subjective judgment of an evaluator at present is solved, and the character evaluation reliability is improved.

The invention provides a detector dynamic performance integrated testing and evaluating method. The detector dynamic performance integrated testing and evaluating method comprises steps of 1, performing the reception linear test and the ground noise test; 2, performing the pulse signal test and the weak signal reception ability test; 3, performing the anti-interference capability test and the actual seismic signal reception capability test; 4, performing the field test to verify the reception performance of the detector by comparing actual seismic tests; and 5, performing the integrated performance evaluation of the detector. The detector dynamic performance integrated testing and evaluating method is closely integrated with the actual data, and the effect is more obvious. It is an effective method to preferably select the detector according to the seismic exploration demand.

A near-field acoustic holographic calibration and measurement method for an impedance characteristic of a planar sonar array belongs to the technical field of research on the near-field acoustic holographic measurement method for the impedance characteristic of large planar emission arrays. The method is characterized by including an impedance characteristic calculation method of the planar emission array; a radiation impedance calibration method based on near-field acoustic holography; a BAHIM method based near-field acoustic holographic transformation method and algorithm; value simulation via a radiation impedance calibration method based on near-field acoustic holography; and establishment of a near-field acoustic holographic theoretical test model for the impedance characteristic of alow-frequency planar sonar array. Acoustic characteristic calibration demands of an active sonar device can be monitored according to water sound, research on basic principles of near-field acousticholographic calibration for the impedance characteristic of the planar sonar array, design of a near-field acoustic holographic calibration scheme, development of impedance calibration software of thelow-frequency sonar array, and near-field acoustic holographic calibration and measurement test can be implemented in a targeted way, and thus, the calibration capability of a low-frequency emissionenergy transducer calibration system can be improved, and problems in evaluating the impedance characteristic of the low frequency sonar are solved.

The invention discloses an outsourcing supplier evaluation method based on hybrid PSO-Adam neural network. The method includes the following steps: establishing outsourcing supplier evaluation data set; the data set being divided into k mutually exclusive subsets of similar size by using the set-aside method. The union of k-1 subsets is used as the training set, and the remaining subset is used asthe test set, so that k groups of training sets and test sets are obtained. Establish neural network, the model structure of neural network includes input layer, hidden layer, output layer; Neural network training, to obtain the neural network model after training; After training the neural network, the outsourcing supplier data set is input to the input layer of the neural network, and the output layer of the neural network is the evaluation score of the outsourcing supplier. The method of the invention can objectively and efficiently carry out outsourcing supplier evaluation decision, reduce reliance on personal experience, reduce supplier evaluation difficulty and reduce supply chain management cost.

The invention discloses a signal-to-interference ratio decision method in actual ICI (Inter-Carrier Interference) elimination of a high-mobility OFDM (Orthogonal Frequency Division Multiplexing) cooperative system, which comprises the following steps of: (1) establishing a signal-to-interference ratio model of the capacity of the cooperative system, and analyzing the influence degree of the signal-to-interference ratio on the capacity of the system; (2) determining a value get method of the signal-to-interference ratio of the cooperative method according to a direct channel and the channel characteristics of the cooperative system; (3) calculating a signal-to-interference ratio range which can satisfy system performance requirements according to the signal-to-interference ratio model of the capacity of the cooperative system and the value get method of the signal-to-interference ratio; and (4) determining the elimination process of an elimination algorithm and evaluating the algorithm performance of the elimination algorithm according to the threshold of the signal-to-interference ratio. The method effectively solves the problem of the evaluation on elimination effect during the actual ICI elimination process by using the scheme of evaluating system performance by the signal-to-interference ratio, and the method greatly reduces calculation on the premise of having the same effect with a bit error index measurement elimination algorithm.

The present invention discloses a handwritten Chinese character correctness distinguishing method based on a labeling relationship, which comprises the specific steps of: establishing a standard Chinese character library comprising Chinese character correctness judgment related feature identifications; acquiring a user handwritten Chinese character point set and carrying out preprocessing; carrying out standardization processing on stroke types of a handwritten Chinese character and judging whether the stroke types and a stroke number are correct; judging a space position relationship of the same type of strokes of the handwritten Chinese character and completing corresponding between strokes of the handwritten Chinese character and a standard Chinese character; judging correctness of a crossing, abutting and neighbor relationship of the handwritten Chinese character; judging correctness of a space position relationship of parts of the handwritten Chinese character; and judging correctness of special structural features of the handwritten Chinese character so as to complete distinguishment on correctness of the user handwritten Chinese character by the steps. The method disclosed by the present invention realizes identification on correctness of the handwritten Chinese character and has important application value.

The invention provides a wind power curve multi-target comprehensive evaluation method and device and a server, and relates to the technical field of wind power plant data processing. The method comprises: obtaining actually-measured data samples, and the actually-measured data samples being actually-measured operation data of the wind speed and power of a draught fan in a wind power plant withina specified time period; drawing a wind power curve of the fan in a specified time period according to the actual measurement data sample; wherein the wind power curve is a curve based on wind speed and power; establishing an evaluation model based on the wind power curve, and calculating evaluation indexes corresponding to the evaluation model; and performing multi-target comprehensive evaluationon the wind power curve according to the evaluation indexes. The invention provides a wind power curve multi-target comprehensive evaluation method and device and a server. According to the method, multi-target comprehensive evaluation can be carried out on the wind power curve according to the evaluation indexes, then quantitative evaluation is carried out on the comprehensive performance of thewind power curve, the comprehensive evaluation problem of the performance of the wind power curve is well solved, and a solid foundation is laid for subsequent data analysis.

The invention relates to an impedance characteristic calibration method of a low-frequency sonar array, and belongs to the technical field of research on impedance characteristic near-field acoustic holographic measurement methods of the large planar emission array. The method is technically characterized in that an impedance characteristic calibration software configuration of the low frequency sonar array is designed; a consistency calibration function module of a measurement system is developed; and calibration measurement and test via the impedance characteristic near field acoustic holographic method of the planar sonar array is carried out. Research related to basic principles of the impedance characteristic near field acoustic holographic method of the planar sonar array, near-fieldholographic method calibration scheme design, low-frequency sonar array impedance characteristic measurement calibration software development and measurement and test of the near-field acoustic holographic calibration can be carried out in a targeted way according to requirements for acoustic characteristic calibration of an active sonar device of a water sound monitoring ship, the calibration capability of the lower-frequency emitting energy transducer calibration system is improved, the problems in evaluating the impedance characteristics of the low frequency sonar array are solved, the ship whose water sonar is in low frequency can be used for monitoring, and the low-frequency sonar monitoring result of the ship is more accurate.

The invention discloses a rolling linear guide pair reliability acceleration test assessment method. According to the method, first, fault modes in a reliability acceleration test are classified, andcorresponding weighting coefficients are utilized to calculate the number of faults; second, load conditions of the reliability acceleration test are utilized to calculate stress acceleration factorsof the acceleration test; third, the acceleration factors are utilized to calculate average fault interval mileage under a single stress level or two stress levels; and last, average fault interval time under all samples is utilized to evaluate the reliability of a rolling linear guide pair. Through the rolling linear guide pair reliability acceleration test assessment method based on an acceleration life time model, the reliability problem of the rolling linear guide pair with a fault or without a fault currently can be effectively solved, and therefore the accuracy of the reliability test result is improved.

The invention provides a river light pollution index extraction method based on a noctilucent remote sensing image, and the method comprises: obtaining river data information, and also comprises the following steps: processing the river data information, processing the noctilucent remote sensing image data of the river, and extracting the river light pollution index. The invention provides a river light pollution index extraction method based on a noctilucent remote sensing image, which comprises: firstly, carrying out segmentation processing and buffer area analysis on a river, and converting a river line map layer into a surface map layer; meanwhile, performing registration and splicing processing on the Luoga remote sensing image to form a complete image; then, by utilizing a spatial statistical method, counting the average value of the light brightness in each river buffer area surface; and finally, associating the average value into the river map layer attributes to form a river light pollution index map, thereby solving the evaluation problem of large-range river light pollution, on one hand, quickly extracting the river light pollution index, and on the other hand, ensuring the consistency of data among different regions.

The invention relates to an evaluation method for homogenization of cigarette product quality by consumers, and belongs to the field of cigarette evaluation. A large-sample consumer communication discussion is carried out from the angle of consumers; intrinsic quality index and external quality index of cigarette are summarized; and the indexes are screened through discussion of experts. The consumers score importance of the screened indexes, so that the weight factor of each index can be calculated. Then the consumers smoke standard sample cigarette and test sample cigarette according to the indexes to score overall similarity; and finally, the total score for evaluating the overall similarity of the homogenization of the cigarette product quality by the consumers is calculated, and whether the brand permissible production quality homogenization is evaluated to be qualified, superior-grade or well-grade is judged by using the total score. The method has the advantages of solving the problem of evaluating cigarette quality in the cigarette product homogenization evaluation system by consumers and contributing to promoting and improving the level of a homogenization production technology of a cigarette product.

It is a stable image telescope test method and its device through electrical imaging means. The method is to use image entropy to evaluate the stability of image and to draw the test curve of the image entropy to evaluate the stability of the image system. The test device is to fix the telescope on the vibration bench and to fix the image sensor on one drawtube end of eye observation position of the telescope and to fix the imaging calibration board on the field of vision of the telescope and to join the image sensor to the computer through A/D converter card, wherein, the imaging calibration board is composed of black and white strips distributing along level and vertical direction.

The invention discloses a talent evaluation model system and method scheme, and particularly relates to the technical field of talent evaluation and management. The technical scheme of the invention is that the talent evaluation model system comprises a server, a terminal computer and a software module; the software module comprises a talent demand module, a talent evaluation module, a talent search module, a recommended talent detailed display module and a document export module; the recommended talent detailed display module comprises a talent display module and a talent recommendation module; and the talent demand module is connected with the talent evaluation module, the talent evaluation module is connected with the talent recommendation module, the talent recommendation module is connected with the document export module, the talent demand module is connected with the talent search module, and the talent search module is connected with the talent display module. The method has the beneficial effects that the problem of regional talent evaluation is solved, talent ranking and the like in a certain region are obtained, and the talent conditions of all regions, provinces and cities can be known conveniently.

The invention provides an urban and rural black and odorous water body blackness evaluation method. The method comprises the following steps: step 1, obtaining a color image of an RGB space of a black and odorous water body river channel; 2, converting a color image of an RGB space of the river channel image into an HSV color space; 3, performing image main color feature extraction on the HSV color space by using a K-means clustering method; 4, sorting main colors, and returning the RGB data of the image; 5, introducing a gray model to calculate a main color gray value Gray; and 6, analyzing the closeness degree of R/G/B three-color channels and black, and judging the blackening condition of the water body. The method is an independent evaluation method capable of judging blackening and blackening degree of the water body, so that the evaluation accuracy of the blackening degree of the water body is improved.