4939results about How to "Fix stability issues" patented technology

A tracking and control method for the hybridded maximum power point of the photovoltaic pumping system. It contains: a, the check and choice logo, it will turn to the step b if it is ture, or it will turn to the step d. b, the output frequency of the inverter will be adjusted the running of the multiple criteria. C, the choice logo will become untrue and the reference voltage Verf=V (n), and the real running time of the normal voltage method, tCV, will be reset, and turn to the step a, or turn to the step a. d, the output frequency of the inverter will be adjusted by the running of the normal voltage method. e, To add a control cycle into the running time of the normal voltage method, tvc, the choice logo will be true if the tvc >= TVC and turn to the step a, or it will turn directly to the step a. it adjust the output frequency by the alternative running of multiple criteria and normal voltage, it can adjust the output frequency in time and control the DC voltage effectively and assure the stable running of the system, the system owns rapid and dynamic tracking characteristics, and a good stable characteristics by taking advantage of this method .

The invention discloses a face image restoration method based on a generation antagonism network. The method comprises the following steps: a face data set is preprocessed, and a face image with a specific size is obtained by face recognition of the collected image; In the training phase, the collected face images are used as dataset to train the generating network and discriminant network, aimingat obtaining more realistic images through the generating network. In order to solve the problems of instability of training and mode collapse in the network, the least square loss is used as the loss function of discriminant network. In the repairing phase, a special mask is automatically added to the original image to simulate the real missing area, and the masked face image is input into the optimized depth convolution to generate an antagonistic network. The relevant random parameters are obtained through context loss and two antagonistic losses, and the repairing information is obtainedthrough the generated network. The invention can not only solve the face image repairing with serious defective information, but also generate a face repairing image which is more consistent with visual cognition.

A regional public opinion monitoring and decision-making auxiliary system based on big data comprises an information acquisition and storage module, a data pre-processing module, a big data public opinion analysis module, a public opinion monitoring, early warning and decision-making auxiliary module and a background management module, wherein the information acquisition and storage module is used for carrying out structuralized storage management on acquired public opinion source information to form a regional big data public opinion knowledge base which is updated in real time; the data pre-processing module is used for pre-processing data in the regional big data public opinion knowledge base to form a complete and ordered data set; the big data public opinion analysis module is used for carrying out public opinion analysis and tendency prediction on hot topics with appointed conditions and the like to obtain a public opinion analysis and tendency prediction result; the public opinion monitoring, early warning and decision-making auxiliary module is used for carrying out real-time monitoring and tracking, management and persuasion on customized public opinions dug and analyzed by sensitive word pairs in a pre-defined sensitive word bank, and announcing the customized public opinions to a decision maker in manners of in-station messages, short messages and mails; and the background management module is used for carrying out public opinion information classification management, user and authority management, keyword management, acquisition management, content management, special topic management and analysis report management.

The invention discloses a graphene / carbon black thermoplastic resin master batch with high dispersibility and a preparation method thereof. The graphene / carbon black compound in the master batch is formed in an electrostatic self-assembly manner, and comprises 10-50% of graphene, 5-20% of carbon black, 0.5-10% of surfactant, 10-65% of carrier resin and 2-10% of assistant. The preparation method comprises the following steps: (1) compounding and dispersing graphene by adopting the surfactant to control the positive electricity of the graphene surface; (2) forming a stable graphene / carbon black compound from the modified graphene and carbon black with positive electricity through electrostatic incorporation in a self-assembly manner; (3) preparing the graphene / carbon black thermoplastic resin master batch with high dispersibility by matching with a solution blended process, a melt-blending method and an in-situ polymerization method; (4) adding the assistant to extrude and pelletize, so as to prepare the graphene / carbon black / thermoplastic resin master batch particles after processing the master batch. By adopting the obtained master batch, the problems of difficult charging of graphene powder, uneven dispersion, dust pollution, unstable product performance and the like are solved.

The invention discloses a handheld triaxial head comprising two motors, an X-axial motor and a Y-axial motor. The two motors are orthogonally distributed in s pace. The X-axial motor is used for controlling pitching; the Y-axial motor is used for controlling rolling. A rotor of the X-axial motor is connected with a carrier; a stator of the X-axial motor is connected with a rotor of the Y-axial motor. The handheld triaxial head is characterized by further comprising a Z-axial motor which is orthogonal to the X-axial motor and the Y-axial motor in space; the Z-axial motor is used for controlling heading axial motion. A rotor of the Z-axial motor is connected with a stator of the Y-axial motor. A stator of the Z-axial motor is connected with a handheld portion. The handheld triaxial head can be held by hand or mounted on other moving platforms; the problem that video recording is unstable and bad due to the fact that a miniature camera may shakes during shooting in motion is solved.

A semi-automatic grinder-ball grinder system for grinding ore is composed of a vibration feeder, a semi-automatic grinder with variable-speed driver and load monitor, a vibration sieve, a crusher, a sludge pump, cyclone unit with concentration, flow and granularity detections, and a ball grinder with variable-speed driver. Its control method is also disclosed.

The present invention provides an ophthalmic solution without an antimicrobial preservative. The solution includes as an active substance at least one prostaglandin and as a solubilizing agent, a surfactant, where the solubilizing agent is polyoxyl-15-hydroxystearate.

The present invention discloses one kind of green powdered paint and its preparation process. The green powdered paint consists of re-dispersible polymer latex powder 5-20 wt%, white cement 20-40 wt%, calcium carbonate 20-45 wt%, titanium white powder 5-25 wt%, diatomite 2-8 wt%, bentonite 1-2 wt%, cellulose ether 0.2-0.5 wt%, defoaming agent 0.2-0.5 wt% and coloring pigment 0-4 wt%. It is prepared through mixing all the components in a stirrer, and packing. It is used after mixing with water in construction site. It has the combined decoration functions of both putty and emulsion paint and may be used widely for decorating inner and outer wall.

The invention discloses a rotary knocking gas turbine. The rotary knocking gas turbine comprises a gas inlet passage, a diffusion section and a gas storage chamber which are connected in sequence from left to right, wherein a gas compressor is arranged at the downstream of the gas inlet passage; a rotary knocking combustion chamber is positioned at the right end of the gas storage chamber, the right end of the rotary knocking combustion chamber is connected with a mixing chamber, a turbine and an exhaust pipe in sequence, a plurality of nozzles are annularly arranged on the left end face of the rotary knocking combustion chamber at equal intervals, and six ignition plugs are uniformly arranged on the circumference of the rotary knocking combustion chamber; an air passage and a combustion passage are arranged on each nozzle, the gas storage chamber is communicated with the rotary knocking combustion chamber through a gas supply passage and the air passages of the nozzles, and the mixing chamber is communicated with the gas storage chamber through a gas escape bypass; a rotor is arranged between the gas compressor and the turbine, the gas compressor of a rotating component of the gas turbine and the turbine are connected with a casing of a static bearing component of the gas turbine through two bearings, and one end of the rotor is led out from the gas exhaust pipe. When the rotary knocking gas turbine is used, the leading-out end of the rotor is connected with a generator assembly through a speed changer.

The invention provides a comprehensive utilization method for planting edible fungi and producing artificial grass peat by using waste cabo generated in a tobacco threshing redrying plant as main raw materials. Raw materials forming culture materials are as follows: 60-100 parts of cabo and 1-5 parts of lime or / and plaster; and 1-40 parts of accessories also can be added. A bag cultivation methodis perfectly selected for a planting process, comprising the steps of dosing, bagging, sterilizing, inoculating, culturing and the like. After the harvest, waste residue of the culture materials containing the cabo is directly crushed to be in a puffy fiber, scrap, or powder state , or is crushed after being fermented and decomposed, and then is dried to obtain the artificial grass peat product. The artificial grass peat is mixed with packing materials such as perlite, roseite and the like to obtain plant culture substrate. The invention has centralized and stable raw materials so as to be beneficial to the massive production; the production cost is 1 / 3 lower than the common method; the planted edible fungi is large and thick, green and safe; and the artificial grass peat is prepared by the waste residue so as to realize high-efficiency comprehensive utilization of the waste cabo.

The invention provides an electrolytic machining method for a thin-wall machine case of an aero-engine, belonging to the technical field of electrolytic machining. The electrolytic machining method mainly aims at the machining of a surface concave-convex structure of a complicated thin-wall rotary body part in the aviation field, and is characterized in that a tool cathode is of a thin-wall strip-shaped structure or a rigid rotary body structure; window or lug boss structures with different shapes are distributed on the surface of the cathode. In a machining process, a workpiece anode automatically rotates and the tool cathode is fed to the anode in a peripheral movement process. In the whole machining process, electrodes do not need to be replaced, and the surface concave-convex structure of the thin-wall rotary body part is machined and molded once through rolling sleeve electrolytic action of a cathode window.

The invention provides an ultra-high-definition panoramic video real-time generation and multi-channel synchronous play system, and relates to the technical field of panoramic camera shooting. According to the system, on the basis of camera array imaging and collecting and by means of GPU high-speed parallel processing characteristics, the high-definition image real-time splicing, correcting, dimming, code compressing and transmission functions are achieved, a multi-channel panoramic multi-camera and an application system of the multi-channel panoramic multi-camera are designed, appropriate reprojection models are selected in a self-adaption mode for different shooting modes such as the cylindrical surface shooting mode and the spherical surface shooting mode, the problems that existing panoramic camera shooting devices in China are generally not high in stability, low in resolution, poor in expansibility, short of instantaneity and the like are successfully solved, the highest product resolution can reach 4320 p to 12960 p, and the frame rate is 30 fps.

The invention provides a tunnel convergence displacement and arch crown settlement measuring device and measuring method. The measuring device is mounted on a tunnel wall and comprises an alignment device fixedly mounted on the tunnel wall, a laser distance measuring sensor mounted on the alignment device and a reflector mounted on a measuring point on the tunnel wall. The alignment device comprises a base, a ball socket is arranged in the base and is in spherical fit with a ball head rotor; the ball head rotor is fixedly connected with the laser distance measuring sensor; a locking device is arranged between the ball socket and the ball head rotor. The base is fixedly mounted on the tunnel wall through an expansion screw; the thread at one end part of the expansion screw is shorter than a threaded hole in the base of the alignment device. The measuring device further comprises an external triggering line and an external triggering button which are connected with the laser distance measuring sensor. Only one measuring device is needed to finish the convergence displacement and arch crown settlement measurement of an entire tunnel; the measurement result is accurate; the requirements of multiple measuring lines, high frequency and big total quantity of tunnel convergence monitoring are met.

The present invention provides a preparation method of stable breviscapine injection. In the course of preparation the L-arginine can be added, its concentration is 40-80 mg / 100ml, and its pH value is regulated to 4.5-6.5. Said prepared breviscapine injection is stable in quality. It can be stored for above three years.

The invention provides a blend oil, a preparation method and application thereof. The blend oil, counted in 100 parts by weight, comprises 0.1-5 parts of phytosterol ester, 0.01-5 parts of microalgae DHA and 90-99.8 parts of other oil components; the other oil components are sorted from three or more than three of soybean oil, colza oil, maize oil, sunflower oil, peanut oil, sesame oil, tea seed soil, palm oil, cottonseed oil, rice bran oil, olive oil, safflower oil, linseed oil, cannabis oil, pig tallow, beef tallow, or microalgae oil.

The invention discloses a cereal flavoring milk containing nut particles and process for preparation, wherein the milk comprises the following constituents (by weight portions): milk 75-95, nuts particles 1-15, cereal 0.05-10, sugar 3-12, stabilizing agent 0.1-1, edible flavoring essence 0.05-0.2.

The technical scheme of the invention discloses an exposure control method and device. The exposure control method comprises the following steps: calculating an average brightness of a scene; performing scene recognition according to scene illumination evaluation, a histogram light region ratio and a histogram dark region ratio, so as to obtain a target brightness value of an adaptive scene; and adjusting parameters of an image sensor according to the average brightness of the scene and the target brightness value of the adaptive scene, so as to enhance or reduce the image brightness. The exposure control method and the device provided by the technical scheme of the invention adaptively adjust the complexity and diversity of the scene, and ensure the speed and stability of automatic exposure control.

The invention relates to a self-adaption zero-frequency compensation circuit in a low-voltage difference linear voltage regulator. The output end of a transconductance amplifier is connected with a voltage regulation pipe by a voltage bumper, a current detection circuit is connected with the voltage bumper and the common end of the voltage regulation pipe, and the other end is connected with a variable-resistance circuit connected with the compensation end of the transconductance amplifier. In the invention, when a load is higher and current is lower, the current detection circuit can detect the load and the current and the load and the current act on the variable-resistance circuit at the moment to ensure that the resistance is enlarged, and the zero position is also relatively lower; on the contrary, when the load is reduced and the current is enlarged, the resistance value of the variable-resistance circuit is reduced, and the zero position is higher. Therefore, the self-adaption zero can change along with the change of a pole so that the compensation circuit takes the effect of compensation and effectively ensures the stable state of system operation. The compensation circuit successfully solves the problem of poor stability of a low-voltage difference linear voltage regulator so that a load capacitance equivalent series resistance is not really important to the influence on system stability, transient response and ripple waves.

The invention relates to a LCL (Lower Control Unit) filtering controlled rectifying active damping control method of electric currents on a feedback variable current side, belonging to an active rectifying method of power electronics. The method comprises the following steps: a direct current voltage control unit is used for finishing the control on a direct current voltage and producing d-shaft active currents of an electric current control unit; a q-shaft current given is used for controlling reactive components of a rectifier; a soft phase locking unit is used for locking a power grid voltage phase position and realizing the synchronous rotational transformation of the power-grid voltage and sampling currents on the variable current side; the current given and a sampling actual value are fed into the electric current control unit; the output quantity of the electric current control unit is accumulated with the electric current on the variable current side which is fed back by usinga first-order high-pass filter to generate the given quantity of a voltage space vector unit; and finally, the voltage space vector unit generates six PWM (Pulse-Width Modulation) signals to finish the control on the rectifier. The method solves the stability problem of a LCL (Low Control Unit) filtering voltage type controlled rectifier and realizes the control of the rectifier on direct-currentvoltages and currents on line side under the condition that the electric current or voltage detection of a capacitor branch is not needed.

The invention discloses a solder joint type detection method and apparatus based on image identification, and relates to the technical field of automatic optical detection. The solder joint type detection method based on image identification includes the steps: based on the obtained soldering tin images of at least two types of solder joints, establishing a training sample set; based on the training samples in the training sample set, training a pre-constructed convolution neural network; and inputting soldering tin images to be identified into the pre-constructed convolution neural network which completes the training, and identifying the types of solder joints in the soldering tin images. The technical scheme of the solder joint type detection method and apparatus based on image identification can utilize the convolution neural network to identify the soldering tin images, thus solving the problem that a traditional soldering tin defect detection method has trouble in plate making and is low in precision and stability, and can simply and quickly identify the welding sport type so as to realize accurate detection of defects of soldering tin by inputting the soldering tin images into the convolution neural network which completes the training.

The invention relates to an on-site intelligent mobile information service system. The system utilizes the mobile terminals such as mobile phones and the sensing and short-distance communication technologies to obtain the identification of the each special mobile terminal of people in site or environmental units, the mobile Internet technology is utilized to transmitted the identifications to the telecommunication server of a website server; and the telecommunication server transmits the personal data and related information corresponding to the identifications back to the mobile terminals such as mobile phones through database retrieval, and the users of the mobile terminals can perform selective on-line communication or control to the people or devices in site according to the received data and information, thus effectively improving the efficiency and success rate of the social activities such as the production, operation, business and public relation of enterprises and personal marriage and friend-making.

The method comprises: a) after receiving the routing maintenances packet, the node maintains and updates its own routing neighbor list, and selects the neighbor nodes whose gradient value are less than its own gradient value and which have link symmetry from the updated routing neighbor list; the node compares the out-going degrees of the selected neighbor nodes, and takes the neighbor node with maximal out-going degree as the optimal next jump node; c) the node establishes the route between itself and the optimal next jump node.

The invention discloses a face restoration method based on a generative adversarial network. The method comprises the following steps: S1, collecting face data and preprocessing the face data; s2, establishing an adversarial network model, wherein the adversarial network model comprises two deep neural networks: a generation network G and a discrimination network D, and generating a face image through the generation network G; judging whether the image is true or false through the judgment network D; and S3, performing face restoration: randomly adding a mask to the test image, simulating a real image defect area, inputting the defect image into a generation network G to generate a face image, replacing the mask area of the generated image with a corresponding position of a missing image,and performing Poisson fusion. Parameters of the network are iteratively updated by utilizing context loss and context loss and global and local discrimination loss, and more natural and realistic face images can be generated and complemented.

The present invention involves the field of anticorrosive coatings, which provides a graphene -based high -solid high -solid -based epoxy anticorrosive coating and its production method to solve the poor anticorrosive coating performance of existing technologies, not environmental protection, and graphene difficult to stabilize the stability in the coatings.The problem is composed of the main paint and curing agent mixed. The main paint consists of the following weights of the following weights: epoxy resin 18‑25 weight, dilute agent 10‑15 weight, auxiliary 0.2‑3 weight portion, Graphene 0.1量2 weight, pigment 10‑15 weight, filler 35‑45 weight, tactile 0.5‑5 weight; the curing agent consists of the following weights of each raw material: amine resin 75‑‑‑85 weights, dilute agents 5‑15 weights, and additives 3‑8 weights.

The invention relates to high-strength high modulus polyimide fiber and a preparation method thereof, which belongs to the high performance organic fiber technical field. The fiber comprises the polyimide fiber which is prepared by biphenyltetracarboxylic dianhydride (BPDA), para-phenylene diamine (pPDA) and 2-(4-aminophenyl)-5-aminobenzimidazoles (BIA), wherein the mol ratio of pPDA to BIA is 1:10-3:1, other di-amine and di-anhydride monomers are added in the synthesis process, a gradient temperature reaction method and a one step continuous preparation method are used in the preparation process, so that the difficulties for synthesizing and processing due to the content increase of 2-(4-aminophenyl)-5-aminobenzimidazoles are solved, the problems of poor homogeneity and stability of thefiber performance can be solved, and the high-strength high modulus polyimide fiber can be obtained, the strength can reach 4.5GPa, the modulus can reach 201GPa, and the raw material source is wide, the spinning process can be continuously performed, the method has low cost and high efficiency which is capable of realizing the industrial production.

A bilayer tablet comprises a first layer formulated for instant release of the angiotensin II receptor antagonist telmisartan from a dissolving tablet matrix and a second layer formulated for instant release of the calcium channel blocker amlodipine from a disintegrating or eroding tablet matrix.

The invention provides a transfer method of a graphene film, which at least comprises the following steps: providing a metal substrate, and sequentially forming a graphene film, an organic polymer protective layer and a polymer frame support layer on the metal substrate surface, wherein the organic polymer protective layer and polymer frame support layer respectively have surface energy or viscosity; peeling the graphene film from the metal substrate, and attaching the graphene film to a target substrate; and finally, sequentially peeling the polymer frame support layer and organic polymer protective layer. By utilizing the proper surface energy or proper viscosity of the organic polymer protective layer and polymer frame support layer, the organic polymer protective layer and polymer frame support layer can be directly attached without any adhesive, and can be peeled without damage after transfer, thereby simplifying and stabilizing the technique and ensuring the complete transfer of the graphene film and the reutilization of the metal substrate.

The invention relates to a small-target surface vertical target dispersion photoelectric measurement device. The traditional contact measurement method has the problems that the labor intensity is high, the measuring results are greatly influenced by manual work, and particularly repeated holes cannot be identified and the measuring results cannot be provided in real time. A laser light source assembly is arranged symmetrically on the lateral surface of a linear array CCD camera, an emergent main axis of the laser light source assembly is coplanar with a main axis of the linear array CCD camera, and an original-direction reflecting film is opposite to the linear array CCD camera and vertical to a light curtain sent by the laser light source assembly. The device adopts an integrated structural design, forms the light curtain converged relative to the CCD camera by matching the laser assembly of a small-power semiconductor laser and the low-cost original-direction reflecting film, reliably acquires the information of positions where bullets pass through the light curtain, effectively solves the problems of unstability and low sensitivity of light used indoors during a CCD convergence test, and has the advantages of convenient installation and debugging, simple structure, and high safety of personnel and equipment.

The invention discloses a high-voltage lithium cobalt oxide cathode material for a lithium-ion battery and a preparation method of the high-voltage lithium cobalt oxide cathode material. The high-voltage lithium cobalt oxide cathode material is prepared from a doped lithium cobalt oxide matrix and a coating on the surface of the doped lithium cobalt oxide matrix, wherein a general formula of the doped lithium cobalt oxide matrix is Li<x>Co<1-y>M<y>O<2-z>N<z>; the general formula of the coating is LiNi<x'>Co<y'>Al<z'>O<2>; and the preparation method comprises the following steps: firstly, obtaining the lithium cobalt oxide matrix Li<x>Co<1-y>M<y>O<2-z>N<z> through once sintering; secondly, preparing a lithium cobalt oxide cathode material precursor coated with Ni<x'>Co<y'>Al<z'>(OH)<2> on the surface by liquid-phase co-precipitation reaction; and finally obtaining the high-voltage lithium cobalt oxide cathode material through twice sintering. The high-voltage lithium cobalt oxide cathode material prepared by the method is good in processability and high in compaction density, has relatively high specific capacity and good cycle performance in a high-voltage state, and can be stably circulated at high voltage of 3.0V to 4.5V.

The invention relates to a fiber mesh tape-wound and reinforced composite pipe, a preparation process and a device, belonging to the technical field of forming processes of composite pipes. The composite pipe comprises an inner-layer core pipe and a post-coated layer, as well as a fiber mesh tape arranged between two layers, wherein the inner-layer core pipe is extruded by a core pipe extruding machine, the adhesive resin fiber mesh tape is heated through a post-heating box, and the composite pipe is finally obtained by traction through a post-traction machine, sizing through a vacuum spraying and sizing box and the like. According to the composite pipe disclosed by the invention, the technology is adopted, the preparation process is simple, the existing tape plastic covering treatment process and the composite pipe forming process are combined into a whole, the number of workers for production is reduced, and the degree of automation is improved; furthermore, the used device is a conventional device, and the cost is reduced; and in addition, adhesive resin is firstly coated on the outer surface of the core pipe, and the plain woven fiber mesh tape is further wounded, so that the interface problem in the pipe is effectively solved, the mechanical properties of the pipe are upgraded and the stability of the pipe during long-term use is also improved.