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 problemof division of the optimal islands of the distribution system containing distributed generation.

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.

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 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 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 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 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 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 present invention provides a method for analyzing the arcs covered by IGSO satellites to the region based on feature points. The process is: according to the given initial moment and orbital parameters, and setting the time step, calculating each interval time step in the specified time period. The position of the satellite corresponding to the time in the geocentric inertial system; according to the given target area, determine its corresponding marker point; judge whether the IGSO satellite can cover the target area at each time step in the specified period , record the corresponding time that can be covered, and form a coverage arc according to the recorded time; whether the IGSO satellite can cover the target area is: according to the satellite position, calculate the critical opening angle corresponding to each marker point and the satellite opening angle to judge, when When there is a marker point that is invisible to the IGSO satellite, it is considered that the IGSO satellite cannot cover the target area at the corresponding moment. According to the obtained IGSO satellite coverage arc, guide the subsequent practical engineering application of using IGSO satellite for satellite-ground communication.