Patents
Literature
Patsnap Copilot is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
Patsnap Copilot

198 results about "Problem solution" patented technology

Model used for carrying out primary frequency modulation analysis coordination control on boiler, steam turbine and power grid

The invention relates to a model used for carrying out primary frequency modulation analysis coordination control on a boiler, a steam turbine and a power grid and particularly relates to a boiler, steam turbine and power grid three-party coordination control supercritical and super-supercritical set coordination control model used for carrying out primary frequency modulation analysis. Control focus of machine-network coordination and machine-furnace coordination in the prior art is a turbo generator set and a power grid, only negative feedback control strategies of grid frequency difference are reflected in a primary frequency modulation control loop, influence on the boiler is not considered, so a hidden safety trouble exists. The method for problem solution is characterized by comprising steps that 1, a DC boiler mechanism model in a supercritical and super supercritical set is established; 2, a supercritical and super supercritical DC boiler controller model is established; 3, a steam turbine primary frequency modulation model is established; 4, an electric power system frequency modulation model including different types of sets is established; and 5, a steam turbine power given signal is corrected. The model is advantaged in that the model is applicable to the boiler, steam turbine and power grid coordination control field.
Owner:黑龙江工研龙创智通云管科技有限公司

Formal sequential lagrangian algorithm for large scale resource scheduling optimization

ActiveUS20060089864A1Reduce operating costsFast dual optimization—obtainingDigital computer detailsForecastingProblem domainAlgorithm
A method and computer program product for optimization of large scale resource scheduling problems. Large scale resource scheduling problems are computationally very hard and extremely time consuming to solve. This invention provides a Lagrangian relaxation based solution method. The method has two distinct characteristics. First, the method is formal. It is completely structure-based and does not use any problem domain specific knowledge in the solution process, either in the dual optimization or the primal feasibility enforcement process. Second, updating the Lagrangian multipliers after solution of every sub-problem without using penalty factors results in fast and smooth convergence in the dual optimization. The combination of high quality dual solution and the structure-based primal feasibility enforcement produces a high quality primal solution with very small solution gap. An optimal solution is first found to the dual of the resource scheduling problem by sequentially finding a solution to a plurality of sub-problems and updating a set of values used in the dual problem formulation after each sub-problem solution is obtained. Coupling constraint violations are systematically reduced and the set of values are updated until a feasible solution to the primal resource scheduling problem is obtained. An initial set of multiplier values is further determined by solving a relaxed version of the primal problem where most of the local constraints except the variable bounds are relaxed.
Owner:HITACHI ENERGY SWITZERLAND AG

Unmanned vehicle operation management system, general control platform, branch control platform, vehicle-mounted computation device and computer readable storage medium

The invention discloses an unmanned vehicle operation management system, a general control platform, branch control platforms, a vehicle-mounted computation device and a computer readable storage medium. The operation management system comprises the general control platform, the branch control platforms, a vehicle-mounted software module and a terminal application, wherein the general control platform is used for collecting information of all the unmanned gardens through the branch control platforms, carrying out centralized management on each branch control platform; each branch control platform corresponds to an unmanned garden and is responsible for the management, monitoring and scheduling of an unmanned motorcade; the vehicle-mounted software module is responsible for the communication between vehicles and the branch control platforms; and the terminal application is used for carrying out vehicle using request submission, verification and payment. Such a layered structure is very suitable for the unmanned vehicle operation management in closed gardens, so that the independent management and information safety among the unmanned gardens are ensured, and the share of data summarization and analysis, problem solutions and the like are realized on the whole; and the structure can be conveniently extended to the operation management of high-speed unmanned vehicles on generalized roads.
Owner:UISEE TECH BEIJING LTD

Calculation method of bearing capacity of reinforced wall plate

The invention provides a calculation method of the bearing capacity of a reinforced wall plate and belongs to the field of strength analysis of aircraft structures. According to the technical scheme, the calculation method is an axial compression loading action based calculation method of the effective width of buckling of a skin. Stiffness reduction is performed through modification of the cross section area and the moment of inertia of a stringer in a finite element model which is formed by plate beam units after the buckling of the skin is produced, stress analysis of a structure is performed by a linear iteration solution method of load loading steps, comparison is performed on the working stress of the stringer in a calculation result and the allowable limiting stress of a stringer and skin combined structure, the allowable limiting stress serves as a damage standard and is solved based on an engineering method, and accordingly the bearing capacity of the structure is obtained. Compared with the traditional full housing model, a calculation method model is a plate beam unit model, the geometric nonlinearity and contact problem solution which is large in time consumption and difficult to converge is replaced by the linear solution, and accordingly the modeling time consumption is small, the calculation speed is high, and the requirements for the professional quality of the computer hardware and analysis staff are low.
Owner:CHINA AIRPLANT STRENGTH RES INST

Optimization method of agricultural material chain operation logistics center site selection

The invention discloses an optimization method of agricultural material chain operation logistics center site selection, belonging to the technical field of logistics center site selection optimization. The technical scheme specifically comprises: putting forward an optimization model for agricultural material chain operation logistics center site selection; converting into new single logistics center site selection, new multiple logistics center site selection and logistics center site selection with limited number; based on the analytic hierarchy process principle, calculating the weight of the target function of the optimization model for agricultural material chain operation logistics center site selection; by taking example of transportation problem solutions, synthesizing addition rules in multiple-target decision analysis, and repeatedly solving until obtaining an approximate optimal solution. The proposed model truly reflects the planning process of the agricultural material chain operation logistics center, satisfies the minimum requirements of logistics link cost and ensures that the model better conforms to reality. The model not only can calculate the optimal site of the agricultural material chain operation logistics center but also can know the throughput of a selected logistics center and realizes the optimal site selection of single logistics center or a plurality of logistics centers.
Owner:BEIJING JIAOTONG UNIV

Crack identification method of main shaft of boring machine

InactiveCN101852681AOvercomes the drawback of being only available in a stationary stateSuitable for online monitoring and diagnosisMachine part testingSubsonic/sonic/ultrasonic wave measurementElement modelEngineering
The invention relates to a crack identification method of a main shaft of a boring machine, the method comprises the following steps: the first step: establishing a wavelet finite element model of the main shaft of cracks of the boring machine under the running state; the second step: adopting the wavelet finite element model of the first step to calculate a forward problem solution crack quantitative diagnosis database which takes the first three-order forward whirling frequency as the target, applying the operational mode analysis method to measure the actual forward whirling frequency of the main shaft of the cracks of the boring machine under the running state, utilizing the mixed optimization algorithm of the genetic algorithm and a back propagation neural network to solve, and quantitatively identifying the positions and the severities of the cracks of the main shaft of the boring machine. The method is effective and reliable, is applicable to quantitative diagnosis of the cracks of the main shaft of the running boring machine, can overcome the defect that the common method can only be used for the static state and is suitable for on-line monitoring and diagnosis.
Owner:GUILIN UNIV OF ELECTRONIC TECH

System and method for intermediation of services

A rule-based system and method for querying scale-free social networks for solving problems based on problem criteria is disclosed. The rule-based system may be facilitated by a computer-based system. The rule-based system will enable the effective and efficient use of the human-to-human interactions of experts and knowledgeable individuals to obtain solutions to all types of problems. The entity desiring a solution to a problem will interact with scale-free social networks using the rule-based system. The rule-based system will be used to define the parameters of the problem and provide these parameters to individuals who agree to participate in attempting to reach a solution to the problem. Facilitated by a computer-based system using a global communications network, such as the Internet, the entity seeking a problem solution will contact individuals who are believed to have the solution to the problem. The first individual from whom the solution is sought will receive the question over the Internet. That individual may take one of three actions upon receipt of the question. The first is to answer the question, the second is to forward the question to another entity for answering, and the third is to reject the question. Each selection will have a different effect on the process for finding a solution to the problem.
Owner:SBRZESNY PATRICK +1
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products