32results about How to "The method is simple and intuitive" patented technology

The invention relates to a method for directly generating digitalized shoe trees by using foot shapes, solving the difficult problem of customizing shoe trees by measuring feet. The method comprises the following steps: (1) selecting shoe tree samples to form a shoe tree sample set; (2) designing gauge points, determining gauge points on each shoe tree sample and then acquiring the positions of the gauge points by using a scanner to obtain gauge point distribution models of the shoe tree samples; (3) aligning the gauge point distribution models of the samples; (4) generating statistic deformation models of the shoe trees; (5) calibrating the parameter of each camera and then acquiring a plurality of images of target foot shapes; (6) calculating the center of gravity of the foot shapes; (7) estimating the sizes of the foot shapes; (8) estimating the direction of the foot shapes; (9) changing individual vectors in the statistic deformation models of the shoe trees according to the plurality of images of the foot shapes until the projection of the models in each image is most identical with the true images of the foot shapes; and (10) outputting digitalized three-dimensional shoe tree models. The invention has the advantages of full automation, high speed and efficiency, simple use, low cost and the like.

The invention discloses a method for verifying the regeneration effect between antioxidants by constructing a solid-liquid two-phase separable regeneration system, belonging to the field of antioxidant regeneration. The method is based on the different solubility of antioxidants, dissolving fat-soluble antioxidants in methanol, and complexing water-soluble antioxidants with β-cyclodextrin to form solid-phase inclusion complexes, thereby constructing the interaction between antioxidants. In the solid-liquid two-phase separable regeneration system that is in contact but not miscible with each other, the change of the antioxidant capacity in the liquid phase solution is compared with the presence or absence of water-soluble antioxidants by the DPPH free radical scavenging method, so as to judge the added water-soluble antioxidants. whether there is a regenerative effect on fat-soluble antioxidants. The invention realizes the effective verification of the regenerative effect between antioxidants, has simple method, few influencing factors and low cost.

The invention puts forward a power battery pack series connection fault diagnosis method. A battery pack is formed via series connection of n battery single cells, and a crossover voltage test method.A battery management system is used for recording battery single cell voltage and battery single cell surface temperature. An MATLAB / simuink is used for simulating adopted power batteries and recording simulation voltage. A mean squared error between experimental and simulation output voltages is calculated to preliminarily determine if voltage exception occurs. If yes, a Z-score is calculated asa voltage detection exception coefficient based on the mean squared error. According to the voltage detection exception coefficient, whether a fault is connection failure or increased internal resistance of single cells; if yes, the fault is determined as a secondary fault, and the rise rate of battery surface temperature is calculated to determine whether the rise rate is greater than a preset threshold value; if yes, the fault is determined as a primary fault. Via the method disclosed in the invention, reliable diagnosis of connection failure of the power battery pack can be realized, increase of contact resistance and increase of internal resistance can be differentiated from each other, only a simple algorithm is needed, and an operating burden of a battery management system can be effectively lowered.

The invention provides a method for identifying a modal parameter based on model order determination and signal noise elimination, which comprises the following steps of: accurately determining the order of a model by singular value decomposition technology, eliminating noise from a measured signal by mathematical low-rank approximation technology, and identifying the modal parameter based on thedetermined order of the model and the signal from which the noise is eliminated. Compared with the prior art, the method for identifying the modal parameter based on the model order determination andsignal noise elimination saves computation time, improves work efficiency and the identification accuracy of the modal parameter, therefore has higher practical application value.

The present invention relates to the technical field of high-efficiency utilization of water resources and optimal scheduling of hydropower, and discloses a step-by-stage reverse learning dimension reduction optimization method for optimal scheduling of cascade hydropower station groups. First, the initial scheduling state process and discrete step length of each hydropower station are calculated; In each stage of the calculation, on the upper and lower sides of the initial state combination, the number of discrete states on the upper and lower sides is randomly generated and combined to form a corridor. Based on the upper and lower boundaries of the corridor, the reverse state combination of the initial state is calculated Perform iterative optimization to obtain an improved scheduling process; repeat the above process until all stages are calculated; finally shrink the discrete step length, iterate repeatedly until convergence, thereby approaching the global optimal solution, and output the optimal scheduling process. The method for optimal dispatching of cascade hydropower station groups of the present invention reversely learns dimensionality reduction optimization method step by step, effectively reduces computational complexity, greatly improves computational efficiency, and is suitable for optimal dispatching of large-scale cascade hydropower station groups.

Provided is a mixture spectrum consistency determination method, relating to a spectrum consistency determination method. The method comprises: establishing a mobile window, performing segmented inspection on detected sample spectrums and existing serial sample spectrums in a sample database in the mobile window, calculating the space angle value between the vector formed by the detected sample spectrums in the mobile window and the matrix formed by the existing serial sample spectrums, and obtaining a serial angle value through the mobile window; and adjusting the size of the mobile window to obtain the difference distribution between the detected sample spectrums and the existing serial sample spectrums at different positions and in different sizes, determining the consistency between the detected sample spectrums and the existing serial sample spectrums according to the difference distribution, and furthermore determining whether detected samples and exiting serial samples have same attributes. The method can accurately determine whether a detected sample definitively belongs to an existing serial sample, and has the characteristics of low cost and high efficiency, and is simple and visual, convenient to understand and easy to popularize.

The invention relates to an all-digital main carrier tracking method based on a Doppler frequency cancellation which belongs to a measurement and control communications field. The invention is characterized in that: by using a characteristic of a frequency spectrum which is dual-modulated by the main carrier and a vice-carrier of a USB measurement and control signal, in the signal of carrying outthe main carrier capture and removing most of Doppler frequency difference, a FIR lowpass filter is used for extracting the main carrier signal carrying a negative Doppler rest frequency difference information, a positive-negative cancellation of the Doppler rest frequency difference is completed, and a purpose of tracking the main carrier is reached. The invention overcomes problems of trouble ina ring road structure and parameter design, a Doppler residual error not able to be removed completely in a traditional way of using a phase-locked loop, and thus the invention is suitable for tracking the main carrier in the USB measurement and control system.

The present invention provides an agile software development management method, device, electronic equipment, and storage medium. The agile software development management method includes: establishing a data structure based on a two-pole spindle structure, and in the data structure: mapping a user story into A story ball, mapping the start time point and end time point of the user story as two poles of the story ball; mapping the subtasks of the user story as spindles connecting the two poles of the story ball; Establish quantitative rules for the quality and volume of the spindle; establish quantitative rules for the quality, volume, density, and collective volume of the story ball based on the quality and volume of the spindle; collect the execution of each user story in agile software development Data: storing and visually displaying the execution data according to the data structure based on the binary spindle structure. The agile software development management method and device provided by the present invention quantify and visually display the development process of agile projects.