4results about How to "Avoid selection" patented technology

The present application relates to a kind of computing method for realizing wide range dynamic noise map system fast update, comprising the following steps: using the data information of system database, based on existing day and night period and city road grade, simplify the structure of traditional road sound level mechanism model;Using big data technology, using hybrid modeling method, regression each grade road sound source (day and night) sound level contribution amount prediction model;Road noise fast calculation method based on sound level contribution amount prediction model is constructed, the fast update of dynamic noise map is realized.Compared with prior art, while ensuring the calculation precision, the operation and update efficiency of noise map system is greatly improved, and the technical constraints of foreign core computing software are broken, the localization of noise map core computing technology is realized, which provides technical support for wide range deep development of noise map.

This invention relates to a novel path planning method based on three-level communication and a forward and reverse expansion search strategy. First, the factory is divided into different areas and sensors are deployed. Then, the sensors collect various parameters of a vehicle and send the collected information to the main control platform. The main control platform analyzes the collected information to determine if there are obstacles threatening the forward path, and decides whether to adjust the vehicle's path. When the vehicle's path needs adjustment, the main control platform uses a forward and reverse expansion search algorithm to plan the vehicle's path, obtaining a planned path. The above steps are repeated to obtain multiple planned paths. Finally, a comprehensive evaluation function is constructed to evaluate the multiple planned paths, and the planned path with the highest evaluation is selected as the optimal path.

The invention provides a carrier rocket safety margin design method and system based on probability calculation and a processor. According to the invention, through probability statistical calculation, a forward numerical design method for directly solving the safety margin based on the known depletion shutdown / injection probability is realized. The method does not depend on accumulation of historical design experience, the safety margin can be directly obtained through modeling calculation, and therefore the method is especially suitable for research and development of brand new rockets lacking reference models. According to the method, by adopting the forward design, the selection of the traditional'safety margin cluster 'and a large amount of random targeting iteration are fundamentally avoided, so that the design period is remarkably shortened, and the design efficiency is improved. The method provided by the invention has been successfully applied to the safety margin design of various models of carrier rockets, and multiple simulation results and flight test data prove the effectiveness of the method.

This invention discloses a method for optimizing the electromagnetic parameters of a micro servo motor, belonging to the field of motor design technology. The method includes: determining a one-dimensional analytical initial flux linkage value based on pre-inputted motor geometric dimensions and material property data; generating initial parameters containing air gap flux and cogging torque harmonic amplitudes through a surface mapping function; importing the initial parameters into a finite volume method differential solver and introducing a transposition method to construct boundary conditions, obtaining a corrected air gap flux density waveform; establishing a target optimization function based on the corrected air gap flux density waveform and the initial parameters, this function containing torque density and electromagnetic loss components; optimizing the winding turns, pole arc coefficient, and magnet thickness using a sequential quadratic programming method to obtain an optimized parameter range; and determining the final electromagnetic parameter set within the optimized parameter range using numerical extrapolation.