30results about How to "Meet the actual engineering requirements" patented technology

The invention relates to an intelligent distribution network and new energy. The invention provides a method for forming islands of a distribution system containing distributed power supply in order to overcome the defects in the prior art. The invention adopts the following technical scheme: firstly adopting the building and merging processes of the islands containing a plurality of tree knapsack problems (TKP) to obtain the initial island division scheme; and then correspondingly analyzing and adjusting the initial islands to obtain the final island scheme, wherein obtaining the initial island division scheme refers to solving TKP by the branch and bound algorithm, which comprises the following processes: firstly solving the critical item of TKP and then finding out the upper bound of TKP in the polynomial time, namely computed time complexity O(n2), by adopting lagrangian relaxation, wherein n is the total number of nodes. The method is mainly applied to rapidly solving the problem of division of the optimal islands of the distribution system containing distributed generation.

The invention discloses a controllable serial capacitor optimal configuration method capable of improving available transmission capacity, which is characterized in that: the position variables and compensation degrees of TCSCs serve as antibody genes to be coded, initial data are input to generate initial populations randomly, and the initial populations are divided into an open crossover and mutation rates are set for the populations of each group, each group of populations are optimized by an immune algorithm, the affinity between each antibody and an antigen in each population in each group is calculated, and clonal selection, clonal amplification, crossover and variable immunity are performed; at the end of the evolution of each generation, a communicating operator is used to allow the populations to interexchange part of antibodies and the affinity is calculated; after the evolution of a plurality of generations, the currently optimal antibodies are distributed into all populations by a transmission operator; and after all populations evolve for one time, if an algorithm meets convergence conditions is judged, and optimal results are output if the algorithm meets the convergence conditions, or immune supplementation is performed and evolution circulation is returned to if the algorithm does not meet the convergence conditions. The method can solve the optimal configuration problem of the plurality of TCSCs.

The invention discloses a method for calculating parameters of a duplex winding power transformer. A method for traversing transformer tap gears is adopted, through voltages on the primary side and the secondary side of the transformer in a short time window and on-line measured data of active power and reactive power, parameters of an equivalent circuit of the transformer and actual motion gears of the transformer tap are calculated. Through the use of the method, the iteration is not required in the calculating process; the method has the advantages that the operand is less, the calculating speed is high, and the calculation accuracy completely meets actual project requirements.

The invention discloses a tracking arc segment computing method on a grounding moving target by an IGSO satellite. The defect that an analysis method for the target tracking capacity by a GEO satellite in the traditional communication task is unsuitable for the satellite communication link analysis of the IGSO satellite is solved, the continuous tracking capacity on the ground moving target by theIGSO satellite is analyzed under the condition of satisfying the ground elevation constraint, satellite antenna angle constraint and target narrow-beam antenna constraint, and the method conforms toan actual engineering use requirement for performing satellite-ground communication by utilizing the IGSO satellite.

The invention discloses an optimal island partition calculation method involving a distributed power-supply power distribution network. The method includes the step that under a distributed power generation condition, a power distribution network model is simplified and constructed, wherein during construction of the model, an original power distribution network involving DG is converted into a connected graph the borders of which have weights, the weights of the borders are determined by the power of connected loads and the significance of the loads and can be obtained by means of a multi-index quantitative evaluation method, the higher the significance is, the smaller the obtained weights will be, and the priorities of the corresponding loads are higher. The method has the advantages that an improved dynamic planning algorithm is provided for conducting island partition solution, a reasonable planning island scheme can be accurately and quickly calculated, the purpose is to achieve the maximum power recover, the significance of the loads is comprehensively taken into account, the solution speed of problems can be effectively increased, the solution precision of the problems can be effectively improved, and an important scientific basis can be offered to dynamic planning of the power distribution network.

The invention relates to a method of preparing a concrete building material by utilizing high-silicon type iron tailings. The method comprises the following steps: recycling and storing the high-silicon type iron tailings; detecting the ingredients of the tailings; performing mechanical chemical activation, grain size analysis and activity analysis on the obtained tailings; mixing the tailings obtained by processing with sand, stones, cement and water according to a certain proportion; and utilizing a normal-temperature solidifying and molding technology to prepare the prepared mixture into the concrete building material with various technical performance indexes capable of meeting the practical needs of the engineering. The method of preparing concrete building material by utilizing high-silicon type iron tailings disclosed by the invention can be used for increasing the utilization force of the high-silicon type iron tailings and improving the current situation that the recovery rate of the existing tailings is not high.

The invention discloses a visualization testing device for simulating soil body displacement of underwater open caisson construction and a method. The device comprises a seepage force application system, a working condition simulation system, a data collection system and an excavation simulation device. By fusing a transparent material technology and a digital image processing technology, the device is applied to indoor simulation of underwater open caisson construction, and visualization observation of a soil body displacement field and a seepage field in underwater open caisson constructionis achieved.

The invention provides a sonar-based improved fuzzy artificial potential field unmanned ship obstacle avoidance method and belongs to the technical field of unmanned underwater vehicles. According tothe prior art, an unmanned underwater vehicle adopts a traditional artificial potential field obstacle avoidance method, and as a result, the unmanned underwater vehicle fails to arrive at a target, and the problem of local minimum values will be brought about. The invention aims to eliminate the above defect and solve the problem in the prior art. The method comprises the following steps that: the data of the upper computer of a ground station are initialized; the position information of an obstacle surrounding an unmanned ship is acquired through a sonar ranging module; the minimum course angle of a combined potential field is calculated based on an improved artificial potential field algorithm; on the basis of the improved artificial potential field algorithm, a two-dimensional fuzzy control module is constructed through a triangular membership function, so that the next position of the unmanned ship can be determined. The method has the advantages of simplicity, high practicabilityand wide application. A TriTech micromachine is adopted to scan sonar detection obstacles, so that the method further has the advantages of low cost and low power consumption. The method is based onthe artificial potential field method, and the principle of the artificial potential field method is simple and easy to understand; and after fuzzy control is adopted, the course angle change of the unmanned ship tends to be smooth.

The invention provides an underactuated unmanned ship obstacle avoidance path planning and control method and system. The method comprises the steps: the current position of an underactuated unmannedship and the position information of an obstacle in a front fan-shaped area are acquired; based on a potential field analysis method, potential field analysis is carried out on the obtained current position of the under-actuated unmanned ship and the position information of the obstacle in the front fan-shaped area, and the estimation point direction with the minimum resultant potential field is selected as a potential field heading angle; the deviation angle between the potential field heading angle and the current heading angle of the underactuated unmanned surface vehicle and the current position repulsion ratio of the underactuated unmanned surface vehicle are introduced into a designed fuzzy logic controller as two input quantities, and the obstacle avoidance heading angle of the underactuated unmanned surface vehicle in the next step of movement is obtained; and a motion controller is designed and tracking control is carried out on the obstacle avoidance heading angle and the advancing speed to realize collision-free navigation of the under-actuated unmanned ship to a target point. The method has the advantages of being high in calculation speed, high in real-time performance, low in cost and the like.

The invention discloses a three-dimensional winding inductor. The three-dimensional winding inductor comprises a PCB, an input bonding pad, an output bonding pad, a plurality of conductive channels and a plurality of inductive coil conducting wires, wherein the PCB is a PCB including dual dielectric layers or multiple dielectric layers; various conductive channels pass through adjacent two dielectric layers or multiple dielectric layers of the PCB; various inductive coil conducting wires are arranged on the same dielectric layer of the PCB; two ends of various inductive coil conducting wires are respectively connected with two conductive channels; furthermore, all the inductive coil conducting wires are divided into more than two layers; all the inductive coil conducting wires are sequentially connected through the corresponding conductive channels; and two ends of all the inductive coil conducting wires sequentially connected through the corresponding conductive channels are electrically connected to the input bonding pad and the output bonding pad respectively. The Q value of the three-dimensional winding inductor is proper; and thus, the three-dimensional winding inductor can satisfy practical engineering use requirements. The invention further discloses an LC filter, a transformer and an equalizer.

The invention discloses a miniaturized phase frequency tester. The miniaturized phase frequency tester comprises a digital sampling module and a data processing module; the digital sampling module isused for synchronously sampling a modulation signal generated by a signal source and an intermediate frequency signal passing through a transponder channel to obtain two differential digital signals,wherein the two differential digital signals comprise a modulation sampling signal and an intermediate frequency sampling signal; and the data processing module is used for conducting phase estimationon the two differential digital signals to obtain phase estimation values and conducting phase comparison on the phase estimation values to obtain phase frequency testing data. According to the miniaturized phase frequency tester, phase frequency testing is completed by means of an embedded software platform through a digital phase comparison mode, signal acquisition equipment and signal processing equipment in the prior art are integrated into one, miniaturization of testing equipment is achieved, and the testing efficiency is improved.

The invention belongs to a design technology for an airplane accessory, and relates to a method for determining upper limit of environmental temperature in a nacelle. The method comprises the following steps of: acquiring temperature on the surface of an engine crankcase through experiments; determining atmospheric environmental temperature for working of an airplane; measuring sectional radiuses of an engine and the nacelle according to data models or real objects of the engine and the nacelle; and finally, performing numerical fitting calibration to obtain an empirical formula according to a thermodynamic principle, aerodynamics and working characteristics of a ventilating and cooling system of the nacelle of the airplane by combining actual test and engineering experience and calculating to obtain the upper limit of the environmental temperature in the nacelle. The method has the advantages of easiness, convenience, easiness for implementation, high accuracy and capability of meeting actual engineering requirements.

The invention discloses an optimal island dividing calculation method of a distributed power distribution network. According to the method, at the step three, evaluation function calculation and optimal island searching are carried out, so that the space complexity is reduced; on the basis of combination of an inclusion-exclusion principle, state simplification is carried out on a combination optimization problem, so that the problem is completed in polynomial time; and solution is completed in time and polynomial space, so that the computing speed is increased. The method has the following advantages: an improved dynamic programming algorithm is put forward to carry out island division solution; a reasonable plan islanding scheme can be calculated quickly and accurately; the maximum powersupply recovery is taken as an objective and the importance of load is considered comprehensively; the problem solving speed and precision are improved effectively; and an important scientific basisis provided for dynamic planning of a distribution network.

The invention discloses a blanking port integrated blanking device for a biomass fuel circulating fluidized bed boiler. The blanking port integrated blanking device comprises an open-jointed pipe, a flow guide pipe, a disturbance air pipe and a material spreading air pipe; an air chamber of the disturbance air pipe is communicated with the open-jointed pipe; the flow guide pipe is inserted into the boiler wall of the boiler and a castable layer and then is directly communicated with the hearth of the boiler; the pipe orifice of the flow guide pipe, which is communicated with the hearth of the boiler is a blanking port; an air chamber of the material spreading air pipe is communicated with the corner of the open-jointed pipe, which is connected with the flow guide pipe; the communication part of the air chamber of the material spreading air pipe and the corner is a material spreading air spray port which is formed in the lower part of the air chamber of the material spreading air pipe; and the flow direction of air entering the flow guide pipe from the material spreading air spray port is the same as the downward inclined direction of the flow guide pipe. Moreover, hot secondary air flows through a disturbance air spray port to form disturbance air which can disturb and loosen agglomerated biomass fuels so as to fulfill the aim of dispersing the materials, and the reverse fleeing of the fuels in the hearth can be prevented. The blanking device can effectively guarantee the flowability and continuity of the biomass fuels in the falling process.

The invention discloses a method for calculating parameters of a duplex winding power transformer. A method for traversing transformer tap gears is adopted, through voltages on the primary side and the secondary side of the transformer in a short time window and on-line measured data of active power and reactive power, parameters of an equivalent circuit of the transformer and actual motion gears of the transformer tap are calculated. Through the use of the method, the iteration is not required in the calculating process; the method has the advantages that the operand is less, the calculating speed is high, and the calculation accuracy completely meets actual project requirements.

A calculation method for IGSO satellites to track moving targets on the ground, which solves the defect that the analysis method of GEO satellites' ability to track targets in traditional communication tasks cannot be applied to the analysis of satellite communication links of IGSO satellites, and can meet the constraints of ground elevation angles. , satellite antenna angle constraints, and target narrow-beam antenna constraints, the analysis of the continuous tracking capability of IGSO satellites to ground moving targets meets the actual engineering requirements for subsequent use of IGSO satellites for satellite-to-ground communications.

The invention relates to a method for correcting the voltage value measured by an insulator detection robot based on a support vector machine. According to the distribution parameter model of the insulator and the equivalent path model of the insulator detection robot, the situations of different low and zero value insulators are simulated, and the insulator strings are calculated respectively when there is no robot. The voltage distribution value and the insulator string voltage distribution value measured by the robot on each piece of insulator, the two sets of data are used as samples to form a sample library; select the sample set, use the support vector machine model for training, correct the actual voltage distribution, and optimize the model parameters Complete the model training; use the trained model to correct the measurement data, and the real voltage distribution of the insulator string can be obtained. This method can obtain the complex nonlinear relationship between the measured voltage value and the actual insulator string distribution voltage through training and learning of sample data under typical defect conditions, and accurately correct the measured voltage values ​​under normal conditions and different low and zero value insulators .

The invention discloses a visualization testing device for simulating soil body displacement of underwater open caisson construction and a method. The device comprises a seepage force application system, a working condition simulation system, a data collection system and an excavation simulation device. By fusing a transparent material technology and a digital image processing technology, the device is applied to indoor simulation of underwater open caisson construction, and visualization observation of a soil body displacement field and a seepage field in underwater open caisson constructionis achieved.

The invention provides a passive wireless high-speed rail track plate real-time online monitoring system device, including a monitoring module, a wireless signal host and a wireless access host, and the monitoring module is implanted into the track plate when the track plate is manufactured in a factory Inside the concrete, it is equipped with stress-sensitive elements for measuring the physical parameters of the track slab wireless signal host; the wireless signal host wirelessly charges the monitoring module, and the monitoring module sends data to the wireless Connected to the host, the monitoring module antenna of the monitoring module includes a 915M antenna and a 2.4G antenna, which are respectively used for directional reception of wireless electromagnetic waves sent by the wireless signal host, and to realize wireless communication between the monitoring module and the wireless signal host. The invention solves the potential safety hazard of high-speed rail operation caused by traditional sensors requiring on-site installation and wiring, realizes complete wireless, and satisfies actual engineering requirements.

The application belongs to the technical field of aircraft system design, and in particular relates to a flexible compensation connection structure between an asymmetrical nozzle and an engine. Includes: convergent extension and L-ring. The convergent extension has a first end and a second end, the first end of the convergent extension is connected to the engine outlet, and the convergent extension extends from the first end to the second end away from the engine outlet. end convergence; the L-shaped retaining ring has a first end and a second end, the first end of the L-shaped retaining ring is connected to the inlet end of the exhaust pipe, and the L-shaped retaining ring is sleeved on the convergent extension Outside, the second end of the L-shaped retaining ring and the second end of the converging extension section cross each other in the axial direction, and there is a gap in the radial direction. This application realizes the soft connection between the asymmetrical nozzle test and the engine body during installation, avoiding the transmission of excessive non-axial force and bending moment on the nozzle to the engine structure, the structure is simple, easy to implement, and can meet the requirements of actual engineering Require.

The invention belongs to the technical field of aircraft system design and particularly relates to a flexible compensation connection structure of an asymmetric spray pipe and an engine. The structurecomprises a convergent extension section and an L-shaped retaining ring; the convergent extension section is provided with a first end and a second end, the first end of the convergent extension section is connected to an outlet end of the engine, and the convergent extension section converges from the first end to the second end away from the outlet end of the engine; the L-shaped retaining ringis provided with a first end and a second end, the first end of the L-shaped retaining ring is connected to an inlet end of an exhaust pipe, and the convergent extension section is sleeved with the L-shaped retaining ring; and the second end of the L-shaped retaining ring and the second end of the convergent extension section cross each other in an axial direction, and a gap is formed in a radialdirection. According to the flexible compensation connection structure of the asymmetric spray pipe and the engine, a soft connection between the asymmetric spray pipe and an engine body during testand installation is realized, excessive non-axial force and bending moment on the spray pipe are prevented from being transmitted to an engine structure, the structure is simple, realization is easy,and actual engineering requirements are met.

The invention provides an improved fuzzy artificial potential field obstacle avoidance method for an unmanned ship based on sonar, which belongs to the technical field of unmanned underwater vehicles and aims to solve the problem of using traditional artificial potential field obstacle avoidance methods for existing unmanned underwater vehicles. The target unreachability problem and the local minimum problem. The method of the present invention includes: initializing the data of the upper computer of the ground station; using the sonar ranging module to obtain the position information of obstacles around the unmanned ship; based on the improved artificial potential field algorithm, calculating the minimum heading angle of the resulting potential field; On the basis of the improved artificial potential field, the two-dimensional fuzzy control module constructed by the triangular membership function is used to determine the next position of the unmanned ship. The effect is that the present invention has the characteristics of simplicity, practicality and wide application. The use of TriTech micro-mechanical scanning sonar to detect obstacles has the advantages of low cost and low power consumption. The artificial potential field method is used as the basis to make the principle simple and easy to understand. Combined with fuzzy control, the course angle of the unmanned ship can be smoothed.

The invention relates to a method for coating a film on a surface of an X-ray reflector, and the method can be used for solving the problems of high interface roughness between films and mixing and diffusion between the films in the prior art. The method comprises the following steps: 1, washing a glass base; 2, heating and keeping the glass base warm, and carrying out backwash cleaning on the surface of the glass base; 3, coating a titanium film on the surface of the glass base; 4, carrying out backwash spurting on the surface of the titanium film; 5, coating a carbon film on the surface of the titanium film; 6, carrying out backwash spurting on the surface of the carbon film; and 7, cutting off the power supply, cooling down to room temperature and finishing the film preparation on the surface of the X-ray. The method is applicable to the field of thin film engineering.

The invention discloses an optical signal time-to-space conversion device and method. The device comprises several same reflectors with diameters of d, a laser source system for producing parallel light, a spatial light modulator and a light splitting prism. According to the number of light paths needing to be output in parallel, a reflector system composed of the several reflectors is designed and a light path is built and debugged. The parallel light produced by the laser source system goes through the light splitting prism, then irradiates the spatial light modulator loaded with serially-transmitted data, and is modulated by the spatial light modulator so that the parallel light is loaded with the serial data. The parallel light reflected by the spatial light modulator goes through the light splitting prism again and then goes into the reflector system and the parallel light going through the reflector system is in a parallel data transmission mode.

The invention discloses a controllable serial capacitor optimal configuration method capable of improving available transmission capacity, which is characterized in that: the position variables and compensation degrees of TCSCs serve as antibody genes to be coded, initial data are input to generate initial populations randomly, and the initial populations are divided into an open crossover and mutation rates are set for the populations of each group, each group of populations are optimized by an immune algorithm, the affinity between each antibody and an antigen in each population in each group is calculated, and clonal selection, clonal amplification, crossover and variable immunity are performed; at the end of the evolution of each generation, a communicating operator is used to allow the populations to interexchange part of antibodies and the affinity is calculated; after the evolution of a plurality of generations, the currently optimal antibodies are distributed into all populations by a transmission operator; and after all populations evolve for one time, if an algorithm meets convergence conditions is judged, and optimal results are output if the algorithm meets the convergence conditions, or immune supplementation is performed and evolution circulation is returned to if the algorithm does not meet the convergence conditions. The method can solve the optimal configuration problem of the plurality of TCSCs.

The invention provides a passive wireless high-speed rail track board real-time online monitoring system device, which comprises a monitoring module, a wireless signal host and a wireless access host, and is characterized in that the monitoring module is implanted into concrete of a track board when the track board is produced and manufactured in a factory, and is provided with a stress sensitive element, and the wireless signal host is used for measuring physical parameters of the track board; the wireless signal host wirelessly charges the monitoring module, the monitoring module sends data to the wireless access host through the wireless signal host, monitoring module antennas of the monitoring module comprise a 915M antenna and a 2.4 G antenna which are respectively used for directionally receiving wireless electromagnetic waves sent by the wireless signal host and sending the wireless electromagnetic waves to the wireless access host, and wireless communication between the monitoring module and the wireless signal host is realized. According to the invention, the problem of potential safety hazards of high-speed rail operation caused by field installation and wiring of a traditional sensor is solved, complete wireless operation is realized, and actual engineering requirements are met.