42results about How to "Reduce the number of states" patented technology

The invention discloses a reliability assessment method for a power grid multi-link system. According to the method, influences of a power transmission network on the reliability of a power distribution network are quantified through the equivalence of the reliability of a load and the reliability of a power supply, the limitation of the assumption that traditionally the reliability of a traditional power distribution network is that the power supply is completely reliable is broken, and a calculation result accords with engineering practice of the power grid; in the method, a loop is used as the basic unit of a reliability assessment of the power transmission network, and a preconceived accident set is further formed, so that the system condition number in the preconceived accident set is substantially reduced, and the statistic analysis of engineering data of the reliability is facilitated. The reliability assessment method can be used for analysis of the sensitivity of reliability indexes to reliability parameters and enhancement measures relevant to the power transmission network or the power distribution network, and consequently planning, operation and maintenance of a power supply enterprise can be guided.

The invention provides a method for multi-user scheduling, which comprises the following steps: acquiring direction of arrival (DOA) information of all users to be scheduled in a cell; and selecting the users on the basis of the DOA information of all the users to be scheduled in the cell. The invention also provides a device for the multi-user scheduling, which comprises the following units: a DOA acquiring unit for acquiring the DOA information of all the users to be scheduled in the cell; and a user pairing unit for selecting the users on the basis of the DOA information of all the users to be scheduled in the cell. Through the method and the device for the multi-user scheduling, the complexity of the multi-user scheduling in the prior art can be reduced, thus system resources required by the multi-user scheduling are reduced.

The invention relates to a double-layer path planning method for overcoming limitations ofcalculation and storage capacity of a UAV (unmanned aerial vehicle). For overcoming limitations of the calculation and storage capacity of the UAV, the method comprises the following steps: firstly, an initial reference track isgenerated on the basis of existing map information and limitations of dynamic performance of the UAV; secondly, environmental information of theUAV and surrounding obstaclesis acquired by an airborne sensor, and whether obstacles pose a threat to the UAVis judged with a three-dimensional collision cone technology; thirdly, a local obstacle avoidance path is generated with a forward search method based on Markov process in case of the threat, and the UAV flies in accordance withthe local planned path, otherwise, theUAVcontinues to fly along the reference path; fourthly,the UAV continues to fly untilthe desired point of the reference track is reached after obstacle avoidance. The method has the advantages of high convergence speed, low data storage burden, high safety and the like, can be used by the UAV for avoiding obstacles safely and rapidly, and can also be popularized to autonomous obstacle avoidance of unmanned vehicles and the UAV.

The invention provides a method for implementing the multicast fast heavy routing. A spare LSP router is confirmed by the tree topology of one-to-many main label exchange path LSP, and a spare LSP is established by the confirmed LSP router. During establishing the spare LSP, the information of main LSP and the information of the spare LSP are merged to reduce the number of the network signal state. The invention also provides a node composed of a receiving unit and an establishing unit of spare LSP path. The invention can save the protection band width and optimize the use of network source and increase the level of resource utilization.

The invention belongs to the technical field of unmanned driving, and discloses an intelligent unmanned vehicle quantitative evaluation system. The intelligent unmanned vehicle quantitative evaluationsystem comprises a program detecting module, an electric equipment detecting module, a speed detecting module, a fault detecting module, a power consumption detecting module, a data processing module, a cloud service module, a quantitative evaluation module, a display module and a recorder module. Due to the cloud service module, the data analysis processing speed can be greatly increased, and the quantitative evaluation efficiency can be improved; meanwhile, due to the quantitative evaluation module, unmanned vehicles can be quantitatively evaluated more scientifically and accurately, the improvement direction can be found, rapid development for the unmanned vehicle technology is promoted, and therefore it is ensured that the unmanned vehicle can be safely driven under the real traffic environment.

The present invention belongs to the technical field of geometric modeling, and discloses a method and a system for constructing an interpolation curve or a curved surface based on a B-spline. The system comprises: a function deployment module, a telescopic translation module, a curve generation module, a central processing module, a curve smoothing module, a curve fitting module, a data storage module, and a display module. According to the technical scheme of the present invention, by using the curve smoothing module, a smoothing operation is performed on the curve in the image, the unsmoothcurve segment in the image can be effectively smoothed, and the curve after being subjected to the smoothing operation has substantially no defect with respect to the original curve, does not deviatemuch from the actual curve, and can adjust the degree of smoothness of the curve by adjusting the interval size by itself; and at the same time, by using the curve fitting module, the mapping reconstruction of the rotary part along the direction of the rotation axis can be realized, the data processing process can be simplified in a facilitated manner, and the consumption of computer resources can be reduced.

The invention discloses a method for reducing the complexity of a continuous phase modulation receiver, which can effectively reduce the complexity of the continuous phase modulation (CPM) receiver. The technical scheme is that: factors influencing the complexity of the CPM system receiver are analyzed, the number of matched filters of the receiver and a maximum likelihood sequence detection state number are reduced, and orthogonal processing is performed on transmitted signals, thereby reducing the number of the matched filters at the front end of the receiver; and a Viterbi decoding state number is reduced by state fusion in a sequence detection stage, and then detection is performed in combination with decision feedback, thereby effectively reducing the complexity of the CPM receiver.

The invention discloses a performance analysis method in wireless mobile communication, comprising the steps: adopting the cross-layer thought, considering a time varying fading channel in a wireless network in a combined manner, a forward error correction of a physical layer and a stop waiting ARQ (Automatic Response Query) protocol of a data link layer, and solving the service rate and the probability of stability of different states of the Markov chain with limited state on the basis of considering different level characteristics of the wireless network comprehensively. Known by comparisonof data analysis results, the model number is reduced compared with the state number of the Markov chain model with limited state constructed by the invention, the complexity of analysis is reduced, and the calculated service rate and the probability of stability of each state in the Markov chain model with limited state are very important variations in network performance.

The invention discloses a method for recovering organic tin from organic tin distillation waste, belonging to the technical field of recovery of metal organic compounds. The method comprises the following steps: washing and purification of the organic tin distillation waste; an esterification reaction; and a condensation reaction. According to the invention, through washing and layering of organictin distillation waste liquid a plurality of times, soluble organic salts and various inorganic substances in the waste liquid can be removed; alcohol and acid are allowed to undergo the esterification reaction; concentrated sulfuric acid is used for catalysis and water absorption, so the complete progress of the esterification reaction is guaranteed; after the concentrated sulfuric acid in the esterification reaction is removed through washing, an excess amount of an organotin intermediate is added into the product ester to make the organotin intermediate and the ester undergo a substitutionreaction; a generated product is washed with water so as to obtain organic tin; and the excess organic tin intermediate has no influence on the application of the organotin and does not need to be removed, and convenience may be brought to the subsequent recovery of organic tin.

The invention belongs to the field of internet searching and discloses an internet people searching information integration analysis control method. According to the method, a webpage information collection module is utilized to integrate fragmentary information searched by a webpage searching module, classification is conducted by an information classification and extraction module, the searchinginformation is classified into identity information, account information and the like, and after the information is compared by an information comparison module, unknown information is stored into aninformation storage module or known information in the information storage module is read. By means of the method, internet searching information can be integrated, information can be stored into theinformation storage module for use later, and integration of scattered information on the internet is facilitated; moreover, searching is more efficient, and careless omission in manual searching canbe avoided.

The invention belongs to the technical field of microorganism detection, and discloses a microorganism rapid detection device and method. The detection device is provided with a shell, a detection boxis pressed into the shell, a display screen is embedded on the shell, an enzyme storage bin is inserted at the side end of the shell, and a base is fixed by screws at the lower end of the shell. A photometer is fixed on that inner end of the detection box by screws, a heating plate is pinned on the bottom of the detection box, and an enzyme storage pipe is clamped in the enzyme storage bin. The device is small in size and is equipped with a built-in lithium battery, so the device is convenient to carry and use. Luciferase reacts with ATP to emit light, and the intensity and brightness of light are detected by the photometer. The microbial content can be displayed directly by a display screen, and can be read directly in digital form quickly and intuitively, and the detection method is simple. The heating plate inactivates the residual microorganisms in the detection box, and then detects the microorganism content, so that the detection is more accurate and precise, and the data is more reliable.

Embodiments of the present invention provide a state machine processing method and apparatus, a readable storage medium. The method comprises the following steps of: determining N states in a state machine, wherein N is a positive integer; according to the service logic corresponding to the state machine, classifying the states that can be run in parallel among the N states; establishing a state of each class as a sub-state machine, each sub-state machine comprising at least two states and events determined according to the service logic; running all the sub-state machines in parallel, and integrating the running results of all the sub-state machines to obtain the running results of the state machine. As a result, the number of states and events that need to be maintained is greatly reduced for ease of maintenance.

Belonging to the technical field of materials, the invention discloses a preparation method of inorganic and organic coated rutile titanium dioxide. The preparation system includes: a temperature detection module, a timing module, an operation module, a central control module, a raw material weighing module, a grinding module, a calcination module, a crushing module and a coating module. The composite titanium dioxide prepared by the method provided by the invention simplifies the production process and saves production cost, and moreover, the composite titanium dioxide has uniform particle size distribution and superior performance. According to the invention, the coating module adopts orthosiliconic acid as the silicon source, employs low alkalinity sodium metaaluminate, or employs low alkalinity sodium metaaluminate and aluminum sulfate as the aluminum coating raw materials for compact silicon-aluminum coating of titanium dioxide, thus providing a new way for coating of titanium dioxide. The method provided by the invention has the characteristics of simple operation, low production process labor intensity and low cost, and is worth popularizing and applying.

The invention discloses a method for improving the reliability of a multi-state power grid information physical system based on Lz transformation. Firstly, the Markov process of power grid information physical system elements is determined according to the influence of information layer uncertainty on a physical layer, and state probability distribution of all the elements is obtained and solved through element differential equations. And establishing an Lz transformation function of each element. And determining an Lz transformation function model of the whole multi-state system according to the system connection condition. Then, a K-means clustering algorithm is used for processing a system Lz transformation function model; and finally, determining a Markov process of the power demand, and obtaining and utilizing a demand differential equation set to solve state probability distribution of the power demand, thereby determining an Lz transformation function of the demand. And finally calculating the reliability parameter. According to the method, the influence on safe and stable power supply of the power grid information physical system after the uncertainty of the introduced information layer is considered, and the reliability of the multi-state power grid information physical system can be better improved.