37results about How to "Improve scientific rationale" patented technology

The invention belongs to the technical field of electrics, and particularly relates to a method for designing a motor through numerical calculation and analytical analysis combined parameter collaborative optimization. The changes of electromagnetism, temperature, fluid, thermal stress, vibration, noise and other physical parameters in the motor are studied through the numerical calculation, an electromagnetic performance analytical expression function cluster with the structural member size as the variant, a maximum working temperature analytical function of different assemblies, a maximum temperature difference analytical function of the different assemblies, a maximum thermal stress analytical expression function, a motor electromagnetic noise change function, a maximum vibration mode value of different directions of the assemblies and a constant frequency analytical expression function are concluded, then the refined designing of the structural member size is carried out by comprehensively taking performance of all aspects of the motor into consideration, and the calculating accuracy of all performance indexes is greatly improved. An objective function is improved through a non-equilibrium relative both-way weighting method, and the effect on a calculating result of the values of different performance indexes is removed. The quantum calculation is introduced into an intelligent optimization algorithm, and the algorithm has better population diversities, global optimization capabilities and higher convergence speed.

The invention discloses a method capable of dynamically partitioning traffic control subregion, including the following steps: acquisition of relevant data for associativity analysis; determining degree of association of adjacent crossings by utilizing the acquired data; further determining combination degree of association of multiple crossings; traversing all possible control subregion partition schemes by adopting subregion partition layer diffusion algorithm and selecting the control subregion partition scheme with maximum performance index by comparation; and partitioning a new traffic control subregion according to the maximum performance index scheme obtained in real time. The invention provides the definition of the degree of association of adjacent crossings and analysis algorithm thereof and realizes effective combination of association key elements of the adjacent crossings; and the provided coordination control subregion partitioning method based on analysis of the degree of association considers various factors influencing the control subregion partition and realizes mensuration, standardization and systematization of the control subregion partition.

The invention relates to the technical field of coal mining, and in particular relates to a testing device and a measuring method for the anchorage performance of a coal and rock mass in a coal mine tunnel. The testing device comprises a force applying device, a forcemeter, a first displacement sensor, a first anchor rod and a second anchor rod, wherein the first anchor rod and the second anchor rod are fixedly anchored on the coal and rock mass in the coal mine tunnel; the force applying device and the forcemeter are arranged on the first anchor rod; the force applying device is used for applying a drawing force on the first anchor rod; the forcemeter is used for detecting the magnitude of the drawing force of the force applying device to the first anchor rod; one end of the first displacement sensor is fixed on the first anchor rod while the other end of the first displacement sensor is fixed on the second anchor rod; and the first displacement sensor is used for detecting the displacement of the first anchor rod relative to the second anchor rod under the drawing force of the first anchor rod applied by the force applying device. The device and the method have the beneficial effects that a stably-positioned reference point is obtained in the coal mine tunnel, so that a relation curve between the drawing force and the displacement of the anchor rod can be obtained by measuring multiple groups of drawing forces and the displacements of the anchor rods on the basis of the reference point. Thus, the foundation for further understanding the anchorage performance of the coal and rock mass and carrying out the supporting design on the anchor rods is laid.

The invention discloses a compound rectangular flow weir for monitoring water flow of a montane stream. The compound rectangular flow weir comprises a left side weir body, a compound rectangular weir,a right side weir body, a substrate, and a water level monitoring device hole, wherein the left side weir body, the right side weir body and the substrate form the compound rectangular weir; the compound rectangular weir comprises a first layer of thin-wall weir and a second layer of brickwork weir; the water level monitoring device hole is located in a riverbed at the upstream of the flow weir to fix a water level monitoring device. The first layer of thin-wall weir is used for monitoring low flow of streams in mountains and tunnels; the second layer of brickwork weir is built by bricks withcement and is used for monitoring high flow in a flood season. The whole compound thin-wall weir obtains flow data calculated by adopting water level measurement, and no manual monitoring is needed,so that the labor cost is greatly reduced. The scientific rationality and the flow monitoring accuracy of the flow weir are improved; the flow and a changing rule of gulley water are precisely monitored; scientific and accurate hydrogeological data is provided for mountain engineering construction.

The invention relates to a plantation density optimizing and analyzing method based on three-dimensional virtual plants. The plantation density optimizing and analyzing method based on the three-dimensional virtual plants is characterized by including the following steps of S10, obtaining morphological structure characteristic parameters of a target planted tree species; S11, placing a three-dimensional model of the target planted tree species on a three-dimensional digital terrain based on the three-dimensional digital terrain which simulates a planted land; S12, calculating the light transmittance and the daily average light transmittance of standing forest colony tree canopies with different plantation densities in different growth stages according to the ray tracing algorithm in the computer graphics; S13, analyzing whether the light transmittance of a standing forest in different growth stages is reasonable or not, outputting the plantation densities, the plantation point configuration method, the line spacing, the plant spacing and the row direction if the light transmittance is reasonable, and repeating the S11, the S12 and the S13 if the light transmittance is not reasonable till the light transmittance is reasonable. According to the plantation density optimizing and analyzing method based on the three-dimensional virtual plants, the quantitative analysis tool can be provided for the plantation design, the intuitive and vivid auxiliary tool can be provided for agriculture technology promotion, and sustainable management, yield promotion and income increasing of forest districts are promoted.

The invention relates to a classification method of Lanzhou red sandstone and a selection method of corresponding engineering measures. It is assumed that all dry density measured values of a single drill hole in the planned construction site are xi, dry density representative values of all the drill holes in the planned construction site are obtained after a series of operations, and red sandstone types are divided into three types I, II and III according to corresponding arithmetic mean values and variable coefficient cv values. The classification method based on the red sandstone diagenesisand with the dry density as the classification index is creatively provided, the engineering characteristics of red sandstone can be better distinguished, and the scientific rationality of red sandstone classification is improved. According to the method, the water permeability of the red sandstone and the field characteristics of the red sandstone of different types are redefined, different supporting systems and underground water control measure suggestions are provided for the red sandstone of different types, and therefore the key technical problems of water gushing and sand gushing of the Lanzhou red sandstone stratum deep foundation pit are solved, rapid excavation is achieved, and safety, reliability, economy and reasonableness are achieved.

A decentralized power spot market transaction simulation method, which first establishes a typical load daily transaction space model based on typical daily actual grid power consumption and large-scale user direct transactions, then establishes a decentralized power spot market transaction simulation model, and establishes an evaluation index system , design different trading schemes, and then calculate the evaluation indicators of each trading scheme according to the obtained trading simulation results, and finally carry out trading scheme analysis and sensitivity analysis according to the evaluation indicators of each trading scheme to verify the rationality of each trading scheme in the power spot market and analyze possible risks. This design can not only realize the effective simulation of the electric power spot market scientifically and rationally, but also accurately reflect the transaction reality of the initial stage of the electric power spot market.

The invention discloses a method for measuring a property of an anchoring. The method comprises the following steps of carrying out anchoring on an anchor rod at a surrounding rock, fixedly arranging a force applying device on the anchor rod, enabling a detecting device to arrange on one side of the force applying device, wherein the detecting device comprises a first rod body, a first displacement sensor and a second displacement sensor, the vertical axis of first rod body is parallel to that of the anchor rod, one end of the first displacement sensor is fixedly connected to the first rod body, the other end of the first displacement sensor is connected to the anchor rod, one end of a second sensor is fixedly connected to the first rod body, and the other end of the second sensor is connected to an anchor rod supporting plate; gradually applying pulling force on the anchor rod through the force applying device, and detecting and recording the size of the pulling force applied by the force applying device through a pressure sensor; and detecting and recording the displacement generated by the force applying device through being relative to the first rod body under a gradually applying pulling force action by using the first displacement sensor, and detecting and recording the pressing displacement of the anchor rod supporting plate through being relative to the first rod body to the surrounding rock by using the second displacement sensor. The method provided by the invention has the advantages that the operation is simple, the accuracy is high, and the automation degree is high.

A monitoring and early warning method for citrus diseases and insect pests based on distributed compressed sensing WSN, which applies distributed compressed sensing and wireless sensor networks to environmental monitoring of citrus crops and early warning of citrus diseases and insect pests. Including the use of distributed compressed sensing technology to perform joint sparse representation, coding measurement and joint information reconstruction of image data monitored by wireless sensor network nodes; apply DCNN (deep convolutional neural network) algorithm for image pattern recognition, and establish pest parameters ( image) feature library; quantify the biological information and environmental information parameters of citrus pests and diseases, and issue early warnings of pests and diseases accurately and timely according to the decision-making mechanism. The invention utilizes the image processing technology of distributed compressed sensing to reduce the transmission pressure of large-capacity images in the wireless network, utilizes the wireless sensor network to establish a timely, on-site, low power consumption, and strong vitality wireless network monitoring system, and improves agricultural The accuracy of monitoring can shorten the early warning cycle of citrus pests and diseases.

The present application discloses an intelligent machine sowing control method, which includes: acquiring the seed image of the seeds to be screened; extracting image features; matching and querying the image features with template image features of various types and levels of seeds in a preset database, so that Determine the seeds that meet the preset screening requirements; the preset screening requirements include seed type requirements and seed grade requirements; send delivery instructions to the conveyor so that the conveyor can transport the seeds that meet the preset screening requirements to the corresponding automatic seeder; The seeder sends a sowing instruction so that the automatic seeder will plant seeds that meet the preset screening requirements according to the preset planting requirements corresponding to the preset screening requirements; the preset planting requirements include planting area requirements and planting spacing requirements. This application reduces labor costs and improves productivity through scientific and reasonable machine planting. The present application also discloses an intelligent machine sowing system and a control device thereof, which also have the above beneficial effects.