10results about How to "Avoid performance fluctuations" patented technology

This invention relates to the field of thermal insulation materials, specifically to an inorganic silicon crystal fire-resistant thermal insulation material for fireproof air ducts and its preparation method. The material comprises inorganic silicon crystal powder, hollow microspheres, composite binders, reinforcing fibers, surface modifiers, nano-antibacterial agents, crack-resistant agents, flame-retardant synergists, and intumescent flame-retardant microcapsules. The inorganic silicon crystal powder is activated by calcination, the microspheres are pretreated with coupling agents and coated with silica sol, the binder is a compound type, the fibers are grafted, the antibacterial agent is loaded onto a carrier, and the flame-retardant microcapsules have a specific core and shell. All components work synergistically to ensure performance. This invention improves the material's fire resistance, thermal insulation, and mechanical properties, integrates antibacterial and flame-retardant functions, optimizes the process to ensure stable performance, reduces fire risk, and meets the high-performance and high-stability requirements of high-end building fireproof air ducts.

The utility model relates to the technical field of scooters, and discloses a scooter and a scooter frame, the scooter comprises the scooter frame, the left side of the scooter frame is fixedly connected with a girder, the inner wall of the girder is rotatably connected with a scooter rod base, the top of the scooter rod base is fixedly connected with a threaded rod, and the outer wall of the threaded rod is rotatably connected with a scooter rod head. A lock sleeve is arranged on the outer wall of the vehicle rod head, a screw is in threaded connection with the inner wall of the lock sleeve, a rotating shaft is rotationally connected to the front end of the screw, a rotating handle is fixedly connected to the outer wall of the rotating shaft, and a cushioning mechanism is fixedly connected to the right side of the vehicle frame. According to the utility model, the design of the frame enables the space of the mounting cavity to be enlarged, the capacity of the electricity storage piece to be improved, the control unit is placed in the heat dissipation cavities on the two sides of the mounting cavity, the guide plates can guide external airflow to enter the heat dissipation cavities, and heat generated when the control unit works can be taken away in time; therefore, the performance stability of the whole product in long-time operation is ensured.

The application relates to the technical field of biodegradable toy materials, and discloses a PFM-nanocellulose-hydroxyapatite synergistically reinforced biodegradable material and application, which is prepared from components such as polylactic acid, polybutylene adipate terephthalate, polypropylene carbonate, polybutylene succinate, hydrophobic pore-keeping modified plant fiber micro powder, antibacterial microcapsules, nanocellulose paste and grafting compatibilizer. In the preparation process, quaternary resin is premixed and melted, nanocellulose paste is injected laterally, and a high-vacuum in-situ devolatilization process is combined, so that liquid medium is removed in real time and in-situ dispersion of nanocellulose is realized. According to the scheme, a physical interwoven space reinforcing structure is constructed in the matrix, the toughness and the mechanical modulus of the material are synergistically improved, long-acting bacteriostasis is realized by relying on controlled release of the microcapsules, the problems of reinforcing phase agglomeration and short bacteriostasis time are solved, and the application is suitable for production of high-performance long-acting antibacterial biodegradable toys.

This invention discloses a fuzzy adaptive intelligent wiper motor control method and system based on noise evaluation. It includes an initial speed curve design module for generating an initial angular velocity curve based on the wiper operating frequency and wiping angle; an adaptive algorithm optimization module that processes real-time wiper operating data through a fuzzy logic controller, outputting speed and acceleration adjustment values; a neural network optimization module that uses a multi-layer feedforward neural network to optimize the fuzzy logic controller parameters to minimize the objective function; and a motor control module that adjusts the motor setpoint in real time based on the optimized adjustment values. This invention solves the problem of abnormal noise from automotive wipers, which is caused by excessive noise or insufficient wiping efficiency due to improper speed control. It significantly reduces operating noise, ensures that the wiping frequency meets regulatory requirements, and improves the adaptability and stability of the control system.

This invention relates to the field of functional food processing technology, specifically disclosing a functional asparagus powder with high saponin content and its preparation method. The method includes the following steps: asparagus is sliced ​​and microwaved to deactivate enzyme activity; after pulping, a composite regulator aqueous dispersion is added; the pH is adjusted and a cellulose complex enzyme is added for enzymatic hydrolysis; then, it is pre-frozen and vacuum freeze-dried; finally, it is pulverized, sieved, and packaged under a nitrogen atmosphere. The composite regulator can dynamically stabilize and protect saponin molecules through temperature-responsive behavior during processing, significantly reducing thermal degradation. The resulting asparagus powder has a saponin content of 72-85 mg / g and is rich in flavonoids, phenols, and soluble dietary fiber. This product can be used in functional foods that improve sleep. When added at a 4% level to bread, noodles, or meal replacement porridge, animal experiments have verified that it can significantly prolong sleep time and increase the incidence of sleep in mice, exhibiting high nutrient retention and good stability.

This invention discloses a method for preparing nano-boehmite and its application in lithium-ion battery separators, belonging to the field of inorganic nanomaterial preparation technology. The method includes five steps: raw material calcination and activation, preparation of precursor slurry, hydrothermal synthesis reaction, washing and filtration, and drying and depolymerization. Calcination is carried out in a dynamic calcination furnace, whose exhaust mechanism can promptly remove water vapor. During discharge, the switching mechanism automatically opens the discharge cover, achieving continuous production with no material sticking to the wall and no residue. The obtained nano-boehmite is characterized by low sodium content, uniform particle size, and good dispersibility. This material can be formulated with binders and other agents to form a ceramic coating slurry. After coating and drying, a robust nano-ceramic coating is formed on the surface of a polyolefin-based membrane. This coating significantly improves the thermal stability, electrolyte wettability, and puncture resistance of the separator, thereby improving the battery's safety performance and cycle life.

This invention discloses a method and system for monitoring and early warning of debris flow ground motion, belonging to the field of geological disaster monitoring and early warning technology. The method includes: synchronously slicing continuous seismic records according to a unified absolute time axis, using waveform pairs from multiple stations as basic input units; independently encoding the signals from each station using a time-frequency hybrid encoder (STFT+LSTM-Transformer); constructing a spatiotemporal cost volume using a Lag-UNet module to achieve soft alignment of cross-station feature spaces; modeling four sets of feature interaction quantities using a causal TCN and outputting the probability of debris flow occurrence through attention pooling; and continuously sampling negative samples with replacement from a large-scale noise pool during the training phase using a dynamic sampling strategy.

The invention discloses a high-heat-capacity and low-corrosivity carbonate molten salt heat transfer and storage medium, a method and application, and belongs to the technical field of molten salt heat storage. The high-heat-capacity and low-corrosivity carbonate molten salt heat transfer and storage medium is prepared from K2CO3, Li2CO3, Na2CO3, AlCl3 and Al powder in percentage by mass, the Al powder and the AlCl3 powder are introduced into carbonate molten salt, the application target that the heat storage performance is excellent at the temperature of 600-850 DEG C can be achieved, and the heat transfer and storage efficiency of the carbonate molten salt is improved. And meanwhile, [Al] with considerable activity is generated by virtue of potential regulation capability of dissolved metal ions and gaseous chloride products by virtue of physical adsorption and chemical adsorption acting forces, so that the aim of reducing corrosion is fulfilled. The high-heat-capacity and low-corrosivity carbonate molten salt heat transfer and storage medium disclosed by the invention realizes the application goals of excellent heat storage performance and low corrosivity, is high in stability, simple in preparation process and easy for large-scale production, and can be applied to photo-thermal power generation and molten salt energy storage.

This invention discloses a method for synergistic control of residual stress and microstructure in a pulsed current-assisted metal additive manufacturing process, belonging to the field of metal material additive manufacturing technology. The method includes the following steps: S1, setting the process parameters for metal additive manufacturing and planning the area and timing for synchronously applying pulsed current; S2, during the layer-by-layer deposition process of the component, when a high-energy laser beam, electron beam, or electric arc acts on the deposition area to form a molten pool, a pulsed power supply is triggered by a synchronous control unit to apply a pulsed current with preset parameters to the molten pool and the heat-affected zone; S3, through the synergistic effect of the electroplasticity and Joule heating of the pulsed current, thermal stress relaxation, grain refinement, and microstructure homogenization are simultaneously achieved during the manufacturing process. This invention, by employing the above method and precisely controlling the electrical pulse parameters, simultaneously achieves stress relaxation and solidification microstructure optimization during the manufacturing process, significantly improving the dimensional stability, fatigue life, and mechanical properties of the formed component.

The application discloses a high-uniform-oxygen-content titanium alloy ingot and a smelting method thereof, and belongs to the technical field of titanium alloy material processing, which comprises the following steps: under the conditions of a predetermined vacuum degree and a leakage rate, short-circuit heating is performed on a consumable electrode by passing current to remove oxygen and moisture adsorbed by the consumable electrode in the production process; and in the smelting process, the vacuum degree is dynamically controlled to keep the consistency of the smelting interface environment of the consumable electrode. The application combines the short-circuit heating on the consumable electrode by passing current before smelting and the dynamic control of the vacuum degree in the smelting process, further improves the longitudinal uniformity of the oxygen content of the prepared titanium alloy ingot, and avoids the performance fluctuation caused by the partial high or low oxygen content. Therefore, the quality stability of the titanium alloy ingot is improved, the reliability of subsequent processing and final products is ensured, and the economic value of the products is improved.