136results about How to "Reduce the difficulty of selection" patented technology

The invention relates to the field of vehicle control, in particular to a nonlinear model prediction control method of regenerative braking of an electric vehicle. The method adopts a nonlinear model prediction control strategy of a rapid system, on the basis of establishing an electric vehicle regenerative braking nonlinear model, subsystem operating state signals, acquired by sensors, of the entire vehicle, wheels, suspensions and motors in the braking process of the electric vehicle are acquired, and multiple purposes, namely controlling speed accurately, guaranteeing vehicle stability, improving driving smoothness and regenerative braking energy recovering efficiency, in the braking process are controlled coordinately. The control system is mainly applied into the driving and braking processes of traditional vehicles and electric vehicles, especially the multipurpose controlling process of strong nonlinear systems.

The invention relates to an electric automobile battery sharing system and a sharing method. The electric automobile battery sharing system comprises a mobile terminal, a vehicle-mounted terminal, a shared battery and a battery service platform. The battery service platform comprises a plurality of service mechanisms and a shared management cloud server. The shared battery comprises an electric quantity monitoring module. The electric quantity monitoring module is used for monitoring the electric quantity of a rechargeable battery pack located in an electric automobile and is in communicationwith the vehicle-mounted terminal. The vehicle-mounted terminal receives the residual electric quantity A of the battery. When the residual electric quantity A of the battery reaches a threshold valueA1, the vehicle-mounted terminal automatically searches pre-selected service mechanisms which can arrive before the electric quantity of the battery is exhausted. Meanwhile, a list of the selected pre-selected service mechanisms is formed and displayed by the vehicle-mounted terminal. When the number B of searched pre-selected service mechanisms is smaller than a preset threshold value B1, the vehicle-mounted terminal sends out the alarm information. According to the invention, by adopting the electric automobile battery sharing system and the sharing method thereof, the shared battery is monitored, and the driving state of a user is fully considered. Therefore, more reasonable selectable service mechanism recommendations can be provided for the user, and a better user experience is provided for the user.

The invention discloses an order processing method and device, belonging to the technical field of E-commerce. The method comprises: receiving an order combining request sent by an order combination initiator; generating a chat window according to the order combining request and adding the order combination initiator into the chat window; receiving an order combination participating request sent by an order combination participator and adding the order combination participator into the chat window; and adding a product selected by the order combination initiator and the order combination participator into a public shopping cart and settling the product in the public shopping cart. The method and the device share order combination information through a chat tool, so that the information can be sent instantly, and network traffic and bandwidth can be saved. The public shopping cart supports product shopping by a plurality of persons, can reduce the selection difficulty and payment difficulty of an order combining product, makes it easy to confirm selectors of the order combining product, can improve the order combination efficiency and save time, can make users more satisfied, and reduces express delivery resources and seller costs.

The invention relates to the technical field of fracturing trucks and discloses a fracturing truck and a fracturing equipment set. The fracturing truck comprises a chassis, at least two engines arranged on the chassis, a transmission system which is arranged on the chassis, connected with the at least two engines and used for collecting and transmitting the output power of the engines, and a pressurizing mechanism arranged on the chassis and connected with the transmission system. By means of the at least two engines and the transmission system matched with the engines, the fracturing truck can effectively reduce the manufacturing cost and the model selecting difficulty and effectively improve the operation reliability.

The invention provides a shortest path Thiessen polygon-based electric vehicle charging station searching method. The method comprises the following steps: S1, acquiring the specific geographical locations of all available charging stations within an area, and establishing a Delaunay triangular network by taking the positions of all the charging station as discrete points; S2, obtaining a Thiessen polygon formed by the discrete points according to circumscribed circles of all triangles in the Delaunay triangular network; S3, using a car networking system to search the position of the most convenient charging station closest to an electric vehicle according to the Thiessen polygon and the information of the discrete points, and feeding back same to the electric vehicle, wherein the car networking system can collect the information of vehicles and charging stations in real time. By performing Thiessen polygon subdivision analysis on charging station site power supply service areas within the area, the method pushes the charging station, which is closest to the vehicle, to the vehicle in demand, thus facilitating the vehicle to be charged in time.

The invention discloses a method and a system for intelligent fusion pickup of RPA elements. A CV element pickup technology based on a deep neural network is combined with a conventional element pickup technology, and a more accurate and more suitable element pickup mode is automatically selected for a user at an RPA software background according to different software interfaces to be operated by the user (certainly, the user is also supported to manually switch the pickup mode); meanwhile, automatic and non-inductive switching of a pickup mode can be realized in the operation process. Besides, on the basis of realizing positioning of each element, the content analysis capability of the interface elements is provided, and ordered output of categories, attributes, positions, levels and the like of the elements is realized, so more diversified element operation capability is supported. Through the functions, smoother use experience can be provided for a user, and the availability and the support range of RPA software are improved; the use cost of the user is reduced, and the time of editing and developing the RPA process by the user is shortened.

The invention discloses a method for transmitting IQ data of radio-frequency remote units, which achieves cascade transmission for the IQ data. The method cascades the radio-frequency remote units to a baseband pool unit in a chain mode, a carrier number occupied by the IQ data of each radio-frequency remote unit is distributed by the baseband pool unit, and the IQ data are organized and transmitted according to a frame format. Trough cascade of the radio-frequency remote units (RRU), the method increases coverage area of a base station, improves flexibility of network arrangement, and reduces selection difficulty of a machine room greatly.

The invention relates to a bluetooth matching method and system based on a shared bluetooth communication address. The method comprises the steps of presetting an initial physical address, setting a bluetooth communication address, matching a first slave device with a master device by the bluetooth communication address to form pairing information, sending the pairing information to a second slavedevice that shares the bluetooth communication address with the first slave device, and pairing the second slave device with the master device according to the pairing information. Through setting the bluetooth communication address, the first slave device is matched with the master device by the bluetooth communication address; the formed pairing information is shared and exchanged with the slave device that shares the bluetooth communication address, so as to finish the bluetooth matching process between each slave device and the master device; as long as one slave device is paired with themaster device, a plurality of slave devices share the pairing information; the master device has the information of only one slave device; and thus, the selection difficulty of the user on the display interface of the master device is reduced, the user experience is improved, and the matching time and frequency are reduced.

The invention discloses an edge detection technology based line diffusion function extracting method and belongs to the technical field of applied optics.The method comprises the steps that an optimal target area is extracted from an input image; the position of an effective pixel-level edge point in the extracted optimal target area is found, and high-order function curve fitting is performed to obtain the position of a sub-pixel edge point; the obtained position of the sub-pixel edge point is adjusted; cubic spline interpolation is conducted on the optimal target area to obtain a dense edge; a line diffusion function is extracted based on an edge expanding function.The edge detection technology based line diffusion function extracting method has no any constraint to the quality of the input image, any preprocessing operation is not performed, selection of a sampled image is very simple and convenient, the image selecting difficulty is effectively reduced, the practicability is improved, and the application range of the edge detection technology based line diffusion function extracting method is widened to the great degree.Any manual operation is not needed for target area obtaining, application is easy, operation is convenient, and the practicability of the method is improved.

The invention provides a differential pressure booster-type energy recovery device based on a reverse osmosis system. The differential pressure booster-type energy recovery device comprises a two-position four-way reversing valve, a first hydraulic cylinder and a second hydraulic cylinder, wherein the first hydraulic cylinder is provided with a piston and a piston rod of the first hydraulic cylinder; and the second hydraulic cylinder is provided with a piston and a piston rod of the second hydraulic cylinder. The device has high energy recovery efficiency; a high pressure booster pump is not required, and the pressure of low-pressure raw material water can be directly boosted to a water inlet pressure of the reverse osmosis system by utilizing the recovered energy, so that stable pressure energy conversion is realized and the equipment investment and equipment selection difficulty are reduced; and simultaneously, the water yield of the reverse osmosis system utilizing the differential pressure booster-type energy recovery device can be changed by adjusting the flow of a high pressure pump or the flow of the energy recovery device.

The invention discloses a road network evacuation planning method based on maximum flow rate path first, which can be applied to a simulated directed road network structure. The method is characterized by comprising the following steps: 1, a super source node is built and associated with the directed road network structure; 2, road network evacuation planning parameters are defined; and 3, evacuation planning path selection is carried out. Influences from two aspects of evacuation time and evacuation capacity for a solved evacuation path are comprehensively considered, and thus in the case of path selection at each time, an evacuation path with the maximum evacuation capacity within the shortest evacuation time can be selected, and the evacuation efficiency of the road network evacuation planning can be improved.

The invention belongs to the technical field of micro-positioning platforms. The invention discloses a micro-positioning platform based on piezoelectric ceramic driving and a modeling and control method thereof. The micro-positioning platform comprises a hardware part and a software part, the software part comprises Simulink software loaded in an industrial personal computer, and communication connection between the industrial personal computer and a data collection card is realized based on the software part to form closed-loop deviation control; the modeling method adopts a Hammerstein modelas a modeling basis, and comprises a static nonlinear part and a linear dynamic part: constructing a static nonlinear function based on a Boc-Wen model, and identifying unknown parameters of the model by adopting a particle swarm algorithm; a linear dynamic model is constructed, the model is equivalent to a linear second-order time-invariant system, and a Matlab recognition toolbox is adopted inthe model to obtain parameters; according to the control method, a composite control mode of feedforward control and feedback control is adopted; in conclusion, the high-precision positioning device has a high-precision positioning effect.

The disclosure provides a target tracking method and apparatus based on human-machine interaction, and a storage medium. According to the method, a to-be-tracked target can be determined through a triggering instruction generated based on a target selection operation of a user without operation learning of multiple continuous frames of images, the acquisition operation of the target is reduced, and the target acquisition efficiency and the tracking efficiency can be improved; the dimension and the scale of a target image in a next frame can be detected based on extracted image characteristicsso that the tracking effect of a rigid target, a target with scale transformation, a target with high-speed motion, and a target which is shielded for a long time can be optimized to a certain extent,and the precision of target tracking is improved; and the effect of the operation efficiency and the target tracking can be guaranteed on general portable devices.

The invention relates to an X-ray attenuator design method comprising the following steps that equivalent material of which the X-ray absorption coefficient is close to that of a tested object is selected according to the properties of the tested object; a mapping relation of the thickness of the equivalent material of the tested object and the thickness of an attenuator is established according to the properties of the equivalent material of the tested object, X-ray properties, filter properties and CT equipment parameters; thickness distribution of the attenuator is obtained according to the established mapping relation and the thickness distribution of the equivalent material of the tested object through which X-rays penetrate along different directions; and the attenuator is manufactured through processing according to the obtained thickness distribution of the attenuator. According to the attenuator designed through the method, dynamic counting range of a detector can be effectively reduced, flow intensity of the X-rays can be fully utilized and the signal-to-noise ratio of reconstructed images can be enhanced; and nonlinear polychromatic projection data of scanning the object are corrected into monochromatic projection data so that hardening artifacts in CT images can be reduced and density resolution and spatial resolution of the CT images can be enhanced.

The invention provides a preparation method and a structure of a three-dimensional memory. An ONOP process is changed into an AONOP process; equivalently, after a conductive channel in an array storage region is etched, aluminum oxide, silicon dioxide, silicon nitride, silicon dioxide and a polysilicon stacked layer are prepared through an atomic layer deposition mode separately; therefore, afterthe pseudo gate is removed by a wet process, atomic layer deposition of aluminum oxide is not needed; and consequently, the tungsten metal gate thickness in the three-dimensional memory is increased,the metal gate resistance is lowered, and the selection ratio difficulty of tungsten contact hole etching in a stage region is lowered.

The invention discloses a pushing method and a pushing system based on position information. The pushing method comprises the steps of: acquiring current terminal position information of a mobile terminal used by a user; acquiring merchant position information stored in a database of a server; calculating distances from the mobile terminal to merchants according to the terminal position information and the merchant position information; selecting the former n merchants in an ascending order of the distances, wherein n is a positive integer; and pushing information of the n merchants to the mobile terminal. By adopting the pushing method or the pushing system, the commodity or merchant information in close proximity can be pushed for the user based on the position information, the probability that the commodity or merchant information is selected by the user is improved, the display efficiency is improved, and the selection difficulty can be reduced for the user.

The invention discloses a wide-load-range low-voltage flyback power factor correction converter control method and a device for realizing the method. A switching tube Q2 is serially connected between the switching tube Q1 of the traditional flyback power factor correction converter and the primary winding end 2 of a flyback transformer T. The anode of a power diode D6 is connected between the switching tube Q1 and the switching tube Q2. The cathode of the power diode D6 is connected with the primary winding end 1 of the flyback transformer T. By adopting the design, the loading capacity of the traditional flyback power factor correction converter is widened. On the premise of the same main circuit parameters, the loading range of the traditional flyback power factor correction converter can be improved and the voltage stress born by the switching tube which is connected with the primary winding of the transformer is reduced. The wide-load-range low-voltage flyback power factor correction converter has the advantages that the efficiency is high and unit power factors can be obtained within the entire input voltage range.

The invention provides a coal low-temperature carbonization system and method. The system comprises a revolving bed carbonization unit, a raw gas washing unit, a tar trapping unit, a gas convection unit and a gas dry quenching unit, wherein the revolving bed carbonization unit is sequentially connected with the raw gas washing unit, tar trapping unit, gas convection unit and gas dry quenching unit. The system and method shorten the oil-gas retention time in the furnace, reduce the secondary cracking reaction and enhance the tar yield.

The invention relates to a high precision control device of the windmill generator damp load. The high precision control device comprises a windmill generator, a protection circuit, a rectifying tube, the damp load, an absorbing circuit, a switching element and a control module circuit, wherein the three-phase output terminals of the windmill generator are directly connected with the rectifying tube and the protection circuit; one end of the damp load is connected with the positive electrode of the rectifying tube adopting the direct current output, the other end of the damp load is connected with one end of the switching element; and the other end of the switching element is connected with the negative electrode of the rectifying tube adopting the direct current output. By using the device of the invention, the control precision of the damp load can be greatly increased, the selection difficulty of the switching tube can be reduced and the product cost can also be reduced.

The invention relates to the technical fields of medicament test and pipe systems, and specifically relates to an atomization filling device. An atomization cavity is of a spindle body structure, oneend of the atomization cavity communicates with a gas outlet of a filling chamber, and the other end of the atomization cavity communicates with a test pipe; a double-fluid atomization nozzle is formed in one end close to the filling chamber, in the atomization cavity, and in a manner of being coaxial with the atomization cavity, a liquid-phase inlet of the double-fluid atomization nozzle communicates with a liquid conveying pipeline, a drag reducer solution enters the double-fluid atomization nozzle through the liquid conveying pipeline, a gas-phase inlet of the double-fluid atomization nozzle communicates with a gas conveying pipeline, and an auxiliary gas enters the double-fluid atomization nozzle through the gas conveying pipeline; and compressed air enters the filling chamber and theatomization cavity through a gas inlet of the filling chamber. According to the atomization filling device provided by the invention, only one nozzle is used under the condition of no need of providing a high pump pressure, and preparation for the drag reducer solution with an atomization particle size of 5-40[mu]m can be realized through simple and flexible adjustment.

The invention discloses a self-propelled hydraulic plate for conveying a tower drum. A supporting frame is arranged on the upper part of a hydraulic plate body; a first support lug at the rear end of the supporting frame is hinged with a second support lug at the rear end of the upper plate surface of the hydraulic plate body; third support lugs in the front of supporting frame is connected with corresponding fourth support lugs through two corresponding lifting tools; and the supporting frame can flip front and back around a hinged point at the rear end of the supporting frame under the driving of the two lifting tools. According to the self-propelled hydraulic plate, the hydraulic plate body, the supporting frame, supporting blocks, a tower drum baffle and the lifting tools are effectively combined, so that the tower drum T can successfully avoid obstacles on two sides of a road when the turning radius is reduced; the troubles that the road is required to be changed, and the obstacles are required to be removed are well eliminated; safety accidents can be avoided because the tower drum T can be kept in a horizontal state when passing by a bumpy road; and therefore, the tower drum T can be conveniently conveyed. The self-propelled hydraulic plate is simple in structure and easily implemented, and has a good technology and economic value.

An embodiment of the invention discloses an uninterruptible power supply UPS circuit backflow protection method, a UPS circuit backflow protection device and a UPS, which are used for solving the problem that a backflow protection device with a distance requirement is bound to be selected for the traditional mechanical backflow protection in the prior art, reduce the difficulty of device model selection, and decrease the system design cost. The UPS circuit backflow protection method comprises the steps of: acquiring an input voltage at an AC input port of the UPS; and controlling to disconnecta relay connected with a battery module in the UPS under the condition of determining that the input voltage is a DC voltage and the input voltage value is greater than a preset threshold value.

The invention discloses a microsphere screening device. The microsphere screening device comprises a stirring assembly, a movable sealing adapter, a sealing cover, a screening cavity, a recycling liquid cup, a fixing platform and a fixing bracket; the top end of a stirring rod is fixedly embedded with a stirring handle, the lower end of the stirring rod is fixedly connected with a stirring blade,and the lower end of the stirring rod and the stirring blade penetrate through the sealing cover to be located in the screening cavity; the movable sealing adapter is fixed to the sealing cover; the stirring rod is hermetically connected with the sealing cover through the movable sealing adapter; and the lower end of the screening cavity goes deep into the recycling liquid cup, the screening cavity is fixed to the fixing bracket through a fixture, and the fixing bracket is fixedly connected to the right end of the fixing platform. According to the microsphere screening device, the selecting difficulty of various hollow polymeric microspheres and glass microspheres can be effectively reduced, primary screening and selecting of the various hollow polymeric microspheres and glass microspheresare achieved, and the selecting efficiency of the various hollow polymeric microspheres and glass microspheres is improved. The microsphere screening device is easy and convenient to operate and easyto control.

The invention belongs to the fields of crop science and crop breeding, which precisely provides a method for cultivating a rapid selection new PTGMS line in wheat with anthers. The method comprises the following steps: 1) hybridizing a PTGMS line needing improving with a conventional wheat breed, with a PTGMS line needing improving as a maternal plant and a conventional wheat breed as a father plant, to acquire an F1 hybrid; 2) seeding the acquired F1 hybrids or the selected F3 seeds; 3) carrying out anther inoculation when the microspores of plant F1 or F3 develop to monocytes in a middle-advanced stage, to acquire a haploid; 4) carrying out chromosome doubling to the haploid acquired in step 3), to acquire a homozygous diploid; and; 5) acquiring the seed of the homozygous diploid and dividing the seed of the homozygous diploid into two equal shares, with one share being planted in an ecological environment to appraise the agronomic characters of the species and breed the seeds, with the other share being planted in a sterile environment to appraise the fertility of the species, thus selectively breeding the PTGMS line in wheat with the needed agronomic characters.

The invention relates to an automatic type-selection method for industrial agitators. The automatic type-selection method comprises the following steps: simulating flow fields of all types of agitators working in an agitating tank through CFD (computational fluid dynamics) under the same working condition, performing flow similarity analysis, so as to obtain agitation performance indexes of the agitators, and building a comparison matrix between a schematic layer and a criterion layer on the basis of a special scaling method; performing weighting processing on influence factors of the agitation performances of all types of agitators according to an agitation demand, and automatically building a comparison matrix between the criterion layer and a target layer; obtaining comprehensive weights according to the automatically built comparison matrix between the schematic layer and the criterion layer as well as the automatically built comparison matrix between the criterion layer and the target layer, and sequencing comprehensive weight values to select an optimal agitator, so as to realize automatic type selection of the agitators. The screening method is simple; the type selection difficulty is reduced, the dependency to the experience and professional knowledge of a type selection designer is lowered; the designer can be assisted in quickly completing the type selection work; the precision and the generality of type selection for the industrial agitators through an analytic hierarchy process are improved.