31results about How to "Clear procedure" patented technology

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 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 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 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 belongs to the technical field of gas/oil production and the oil exploitation industry, and relates to a full-airtight high pressure valve leakage treatment device and method. The device comprises a hydraulic under-pressure plugging unit and a valve under-pressure maintenance sealing unit. The hydraulic under-pressure plugging unit is arranged at a valve and used for plugging a channel of an oil pipe or a sleeve at a gas/oil production wellhead; the valve under-pressure maintenance sealing unit is connected with the valve and comprises a conversion nipple; a second vent valve is arranged on the conversion nipple; the left end of the conversion nipple is connected with a right port of a valve body in a sealed mode; the right end of the conversion nipple is connected with a second hydraulic cylinder in a sealed mode; and the free end of a second piston rod of the second hydraulic cylinder is arranged toward the conversion nipple and connected with the screw thread end of a lead screw of the valve. Under the condition that the gas/oil production wellhead is under pressure, firstly the channel of the oil pipe or the sleeve at the gas/oil production wellhead can be plugged through the device to form a non-pressure environment, then valve parts are disassembled, a damaged valve plate of the valve is replaced, and the valve is recovered after replacement.

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 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 invention discloses an unmanned aerial vehicle aileron deceleration system and method. After an unmanned aerial vehicle enters a deceleration slipping phase, an aileron instruction generator issues an aileron drift angle instruction; the aileron drift angle instruction is coupled with an aileron deflection instruction of the aileron deceleration system and an aileron deflection instruction sent by a flight control system by controlling the posture of the unmanned aerial vehicle; the following two types of situations are contained: normal situation: the aileron instruction generator sends apreset aileron drift angle instruction; emergency situation: the aileron instruction generator sends an aileron maximum drift angle instruction; and after receiving the aileron drift angle instruction, an aileron control system controls an aileron to deflect to a specified state. The preset aileron drift angle instruction is: different aileron drift angles with different speed segment values. Theunmanned aerial vehicle aileron deceleration system disclosed by the invention are applicable to all types of unmanned aerial vehicle platforms, has high versatility, clear program logic, high operability, easy implementation, a low cost and a remarkable deceleration effect, and can effectively shorten the slipping time and reduce the slipping distance, thereby reducing risks.

The invention discloses a Matlab matrix operation-based admittance matrix calculation method for power flow calculation. An admittance matrix is calculated by completely adopting matrix operation. Themethod comprises the following steps of reading original data arrays of branches; forming head and tail node number arrays I0 and J0 of the directed branch; calculating a series branch admittance array YB of a branch pi-shaped equivalent circuit; forming a partial mutual admittance matrix; calculating self-admittance increment arrays of head and tail nodes of the directed branch; forming a self-admittance diagonal matrix Y0D; forming a node admittance matrix Y; and adding a reactive compensation admittance value to self admittance of the node admittance matrix Y. The method is realized in a Matlab platform, so that scientific and research personnel can conveniently perform testing and analysis on a calculation result by using various tools and functions provided by Matlab. The admittancematrix is calculated by completely adopting the matrix operation and complex operation, so that program codes are reduced, programming is simplified, and a program is clearer; and due to use of the matrix operation, the calculation speed is greatly increased.

The invention provides a business component calling method and device, a terminal and a storage medium, and relates to the technical field of computers. The method is applied to an application programof a terminal, the application program comprises an upper-layer application, a mobile component integration framework and a plurality of business components. The method comprises the steps that whenthe application program starts a target function, the upper-layer application sends calling information of the target function to the mobile component integration framework; the mobile component integration framework receives the calling information, acquires a standard component interface corresponding to the target function based on the calling information, and acquires an implementation class of the standard component interface according to the standard component interface; and the mobile component integration framework calls the target service component for realizing the target function through the implementation class of the standard component interface. The corresponding relationship between the service component and the standard component interface does not need to be established, the component decoupling is realized, the program is clearer, and the risk is reduced.

The invention discloses an informatization management system for a bridge member prefabrication factory. The informatization management system mainly comprises a production plan management module, a raw material management module, a production management module, a production quality management module, a human resource management module, a laboratory management module and a mixing station monitoring management module. Through the implementation of the invention, on the basis of carding and standardizing the production process and procedure of each bridge prefabricated part, the complete production process management of each prefabricated part is compiled into a set of informatization management system with clear logic and smooth operation. The informatization management system can automatically issue a production instruction to each automatic processing machine, record machining data and the number of machined parts in real time, and technical management personnel are timely prompted tocheck and accept. The system performs timing on each process, and actively pushes the circulation of each process, and multi-thread parallel inconsistent management is carried out on all the components in different production processes, and all the processes are clear and orderly.

The invention relates to Chinese character encode input method that is constructed by principle design, conversion operation and input operation. 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.