31results about How to "Clear procedure" patented technology

The invention discloses a Matlab-based rectangular coordinate newton power flow calculation method. Matrix operation and complex operation are adopted, a Jacobi matrix is formed according to the programming characteristic of Matlab, and the power of a node is calculated. The method comprises the following steps: calculating an initial Jacobi calculation matrix; calculating the complex power and the injection current phasor of the node; calculating partitioned sub-matrixes of the initial Jacobi matrix; correcting diagonal elements of the sub-matrixes of the Jacobi matrix by virtue of the injection current phasor of the node and a partial derivative of a voltage deviation to a voltage; forming the Jacobi matrix by virtue of the sub-matrixes of the Jacobi matrix, and performing regulation. The method is implemented on a Matlab platform, so that a researcher can conveniently test and analyze a calculation result by virtue of various tools and functions provided by Matlab. Practices show that convenience is brought to program compiling, modification and debugging of the researcher, the calculation speed is substantially approximate to the speed achieved on a C language platform and an excellent analysis tool is provided for the researcher.

The invention discloses a rapid decomposition method trend calculating method based on a Matlab. The method comprises the following steps that matrix operation and complex number operation are used; an array bt1 is set and a node number of a non-equilibrium node is recorded, and an array bt2 is set and a node number of a PQ node is recorded; when equation set coefficient matrixes B' and B'' are formed, a node type is not considered, and then according to the arrays bt1 and bt2, a matrix element is extracted, and redundant rows and columns are removed; and before iteration, according to the arrays bt1 and bt2, node-injected active and reactive independent elements are removed. In the invention, program codes are reduced, programming is simplified, and a program is clear so that scientific research personnel can conveniently modify the program, debug and improve the program, and add a new function. In the invention, during LU decomposition, an independent element of a coefficient matrix is removed, and before iteration, node-injected active and reactive independent elements are removed; and during an iteration process, work of mentioning a correlation matrix or a vector element repeatedly can be avoided, calculating workloads are reduced and a calculating speed is increased.

The invention discloses a polar coordinate Newton method load flow calculation method based on Matlab. By means of matrix operation and complex operation, a jacobian matrix is formed and node power is calculated according to the programming features of Matlab, and the method includes the following steps of calculating a jacobian initial calculation matrix, calculating node complex power, calculating an initial jacobian matrix block sub-matrix, modifying diagonal elements of the jacobian matrix block sub-matrix through the node complex power, forming the jacobian matrix through the jacobian matrix block sub-matrix, and adjusting the jacobian matrix. The method is implemented on a Matlab platform, and scientific researchers can test and analyze the calculation result by conveniently using various tools and functions provided by Matlab. It is proved through practices that the scientific researchers conveniently write, modify and adjust a program, the calculation speed is basically close to the speed achieved on a C language platform, and an excellent analysis tool is provided for the scientific research of the scientific researchers.

The invention provides a numerical control programming method of an equal-width stepped conic curved surface. The method comprises the steps of setting a programming file, carrying out decomposition,extraction and acquisition, parameterizing a curved surface curve circumferential angle equation, calculating a line space, obtaining a valid line segment length value, and completing the processing.According to the method, a numerical control machine tool secondary development programming environment is used to carry out manual programming, a cutter trajectory is calculated through a parameter line approximation method and a combination of multiple cycles, a cutter moves along a parameter line of each axis of the curved surface, a main program and a sub program are compiled, and the numerical control programming processing is carried out through a method of calling the sub program through the main problem. The method has the characteristics of a simple calculation method and a fast calculation speed. The program is clear, concise and easy to understand and has good readability and modification, the program is flexible and convenient to modify and edit, the program has high reliability and a small capacity and can be completely stored in a numerical control system, processing interruptions are avoided, and the processing efficiency is improved.

The invention discloses a polar coordinate Newton method load flow calculation method based on a Matlab sparse matrix, adopting matrix operation and complex operation and using a sparse matrix technology provided by Matlab. The method is implemented on a Matlab platform, so that researchers are facilitated to use various tools and functions provided by Matlab to test and analyze a calculation method. The main part of the method adopts both the matrix operation and the complex operation, reduces program codes and simplifies a programming process, so that the program is clearer, and the researchers are facilitated to modify the program, debug the program, and improve and add new functions for the program. The method provided by the invention adopts the sparse matrix technology of Matlab, so that calculation speed is greatly improved, meanwhile the sparse matrix of Matlab is very convenient to use, elements of the sparse matrix can be directly used by using a column number like a full matrix, design of a sparse storage structure is not needed, and an excellent analysis tool is provided for scientific research of the researchers.

The invention relates to Chinese character encode input method that is constructed by principle design, conversion operation and input operation. The method follows the rules that: the code length is determined by the grades, the order of arrangement is controlled by the structure and the symbol is converted by the code element, as well as observes the transformational rule and the feature conversion mechanism; and the method is a barcode input method of coding inputting characters, words and sentences by inputting the formula Zs = M1+M2+M3+?-Mi = D1D2D3?-Df by using the key according to the code on the basis of the input soft. It contains the programs of grade identification and fixing length, selecting code element, fetching feature switching code, ranging symbol making code, recording output link. It will realize the inter-conversion of code element and replacing symbol conversion realizing element. All the components of all elements are used as code element that would distribute main code elements according to distribution principle. The code element and feature classifies the type to 32 sorts.

The invention discloses a method for verifying electronic fences based on recorder management platform ends and a device for verifying the electronic fences, and relates to a method for verifying the electronic fences and a device for verifying the electronic fences. The method and the device can solve the problem that the real-time processing speed is relatively low, the processing result accuracy is low and the expansibility is relatively poor in existing platform end fence verification. The method for verifying the electronic fences based on the recorder management platform ends comprises the following steps: vehicle coordinates pushed by corresponding reception coordinates of the fence sub-module and vehicle fences correspondingly form new message packets which are pushed to routing fences, the message packets are respectively routed into corresponding passageways by the routing fences according to the fence shape, and the messages in the three passageways are respectively pushed to the corresponding array of the message bus; the message packets are received by the fence verification sub-module and respectively pushed to the corresponding verification module; after the message packets are verified, warning data generated during verification are stored into a database. The method and the device are used for verifying the fences on the platform ends.

The invention provides a serial port communication device and method based on LabVIEW, and belongs to the technical field of serial port communication. The serial port communication device and method based on the LabVIEW aim to solve the problems that in existing serial port communication based on LabVIEW programming, data are lost, and the data frame analyzing process is cumbersome and wastes time. The device comprises a UI event generation module, a UI event processing module, a data sending and receiving module, a data analyzing module and a data display module. In the method, four layers of producer and consumer frameworks are formed and all modules are executed in parallel. In the data analyzing step, data received by a serial port are analyzed by means of a state machine analyzing method according to an analyzing frame protocol to obtain a complete analyzing data frame. Integrity of communication data transmission is guaranteed, programs are concise and clear, high in execution speed and stable in operation. The device and the method are used for serial port communication between an upper computer and a lower computer.

The invention discloses a Matlab sparse matrix based power flow fast decomposition calculation method. The Matlab sparse matrix based power flow fast decomposition calculation method is realized at a Matlab platform by adopting the Matlab sparse matrix technology, so that a researcher can test and analyze a calculation result conveniently by using various tools and functions provided by the Matlab. As matrix operation and complex operation are adopted, program codes are reduced, the programming is simplified, the program becomes clearer, and convenience is brought for the researcher to modify the program, debug and improve the program and add new functions; and due to the use of the matrix operation, the calculation speed is also improved greatly. By adopting the Matlab sparse matrix technology in the Matlab sparse matrix based power flow fast decomposition calculation method, the calculation speed is greatly increased; meanwhile, the Matlab sparse matrix is very convenient to use, and the elements of the sparse matrix can be used directly like the row and column number of a full matrix, and design of a sparse storage structure is also unnecessary. The Matlab sparse matrix based power flow fast decomposition calculation method modifies the calculation process of an admittance matrix, and further improves the calculation speed.

The invention relates to a method for displaying multi-item alarm information at a single position of an operation screen. The method for displaying multi-alarm information in a single position of the operation screen comprises the following steps: using HMI system software in GE Company to organize the order of the multi-item alarm information of each device in real time according to the importance; expressing all the chains of the alarm information in a program; and manufacturing the abnormal chain information at a screen position, and selecting the display mode and content according to need. The method for displaying the multi-item alarm information at the single position of the operation screen has the advantages of wide information contents and complete scheme, ensures that an operator directly observes and knows the information contents through the frequently used screen and knows a dispelling method, saves complicated calculation process of searching the program, shortens the accident handling time, improves the equipment operation rate, and guarantees the device safety and smooth operation of the production; and the method is simple, the program is concise, the display screen is clear, and the operating method is easy to grasp.

The present invention discloses a Matlab sparse matrix-based Cartesian coordinate Newton power flow calculation method. Matrix operation and complex operation are adopted, and a sparse matrix technique provided by the Matlab is used. The method of the invention is realized on the Matlab platform, so that scientific researchers can be facilitated to use various tools and functions provided by the Matlab to test and analyze calculation results; and the main part of the method of the invention adopts the matrix operation and complex operation, and therefore, program codes can be reduced, programming is simplified, a program is more clear, the scientific researchers can be facilitated to modify, debug and improve the program and add new features. The sparse matrix technique of the Matlab and the matrix operation are adopted, and therefore, calculation speed can be greatly improved; and the sparse matrix of the Matlab is very easy to use, and line and column numbers can be adopted to directly use the elements of the sparse matrix just as a full matrix, and an excellent analytical tool is provided for the scientific research work of the scientific researchers.