12results about How to "Change limitations" patented technology

The application discloses a kind of based on thrust variation characteristics military aircraft take-off performance calculation method, comprising: step S1, calculate atmospheric environmental parameter;Step S2, obtains lift coefficient by interpolation method, it is convenient to determine the ground speed of aircraft;Step S3, based on the physical characteristics of aircraft determines the nose wheel speed of aircraft;Step S4, based on fly parameter data and aeroengine adaptive calculation model determines the thrust F of engine;Step S5, obtains lift coefficient and drag coefficient by stalling angle of attack interpolation, it is convenient to calculate the taxiing distance L of aircraft three-wheel taxiing stage 11 And taxiing time T 11 ;Step S6, based on the dynamic variation characteristics of angle of attack calculates the taxiing distance L of aircraft two-wheel taxiing stage 12 And taxiing time T 12 ;Step S7, based on the taxiing distance L of aircraft three-wheel taxiing stage 11 And time T 11 , the taxiing distance L of two-wheel taxiing stage 12 And taxiing time T 12 Determine total taxiing distance and total taxiing time.

This invention relates to a multifunctional bioactive dental bulk filling composite resin and its preparation method. The composite resin comprises an organic resin matrix and an inorganic filler; the organic resin matrix comprises polymerizable resin monomers and a photoinitiator system, the polymerizable resin monomers comprising dimethacrylate monomers and E-POSS; the inorganic filler comprises nMgO and sSiO2 with a silanized surface. The preparation method includes the following steps: preparing nMgO powder using a sol-gel method combined with a gradient calcination process; preparing submicron-sized sSiO2 using the Stöber method and subjecting it to surface silanization treatment to obtain silanized sSiO2; mixing the polymerizable resin monomers, E-POSS, and the photoinitiator system, stirring in the dark until a homogeneous resin matrix is ​​formed; adding the obtained nMgO and silanized sSiO2 to the resin matrix in a specific ratio and mixing and dispersing evenly to obtain an uncured paste-like composite resin.

This invention relates to the field of spectral analysis and identification of genuine and counterfeit Chinese medicinal materials, and discloses a method for identifying counterfeit Cordyceps sinensis based on multispectral fusion. This method first collects multispectral image data of samples under standard conditions; eliminates equipment and environmental noise through standardized preprocessing to establish a reliable data foundation; then, it fuses extracted spectral derivative features and spatial texture features to construct a lightweight neural network identification model. Its core innovation lies in introducing a physical interference stripping model, which can actively correct spectral distortion caused by moisture and mold, obtaining intrinsic spectra to improve model robustness; and through dynamic verification and incremental learning mechanisms, the model can continuously evolve, effectively identifying new counterfeiting methods. Finally, the entire model is integrated into a multispectral portable terminal, achieving rapid screening within seconds and outputting a complete report including authenticity determination, type inference, and confidence level. Ultimately, this solves the industry problems of low efficiency, reliance on experience, and inability to be applied on-site by traditional methods.

The application relates to a fire hose inspection and detection device and relates to the field of fire hose detection, which comprises a test table, water outlet boxes and water storage frames arranged in a diagonal line on the left and right sides of the test table, two locking mechanisms corresponding to the water outlet boxes and the water storage frames respectively arranged at the upper end of the test table, and an environment simulation unit arranged between the two locking mechanisms. The fire hose is arranged in an S-shaped mode for subsequent detection, the overall detection range of the fire hose is shortened, the fire hose can be fully detected in a long enough detection length, and the authenticity of the fire hose detection result is greatly improved; the use condition of the subsequent fire hose after back and forth friction with different ground is simulated by replacing the environment simulation plate and the friction sleeve, the limitation of the fire hose detection in a single environment is changed, the quality of the fire hose is more comprehensively detected, and a more accurate wear resistance detection result is obtained.

This invention discloses an online detection method and device for the trajectory of sphere polishing, relating to the field of precision machining online detection. The method includes: S1, acquiring a continuous image sequence during the sphere polishing process at time i using a high-speed camera; S2, preprocessing and feature recognition of the continuous image sequence; S3, a rotation angular velocity measurement module calculating the rotation angle and rotation angular velocity to obtain theoretical values; and a three-dimensional trajectory reconstruction module radially projecting discrete trajectory points onto a sphere surface determined based on the first point, to achieve visualized three-dimensional trajectory reconstruction under geometric constraints, thus completing the online detection of the sphere polishing trajectory. This invention combines a transparent grinding disc structure, a multi-view observation layout, and a dedicated image processing algorithm to achieve real-time, high-precision, and high-efficiency online detection of the sphere's rotational motion parameters and trajectory during the polishing process.

The utility model discloses a high-precision low-altitude meteorological sensor calibration device, and relates to the field of sensor calibration. The air pressure calibrator comprises an air pressure calibrator main board, the upper surface of the air pressure calibrator main board comprises a micrometering valve, one end of the micrometering valve is connected with a universal joint, the other end of the universal joint is connected with a micrometering valve knob, the micrometering valve can be operated by rotating the micrometering valve knob, and a support is arranged at the lower end of the micrometering valve knob. According to the high-precision low-altitude meteorological sensor calibration device, the fine adjustment valve is arranged on the main board of the air pressure calibrator, and the universal joint is used for connecting the fine adjustment valve knob, so that an operator can conveniently operate the fine adjustment valve by rotating the knob, the flexibility and convenience of operation are greatly improved, and meanwhile, the operation efficiency is improved. The support at the lower end of the micro-metering valve knob can be horizontally placed when the micro-metering valve knob does not work, so that the adjusting precision is prevented from being influenced by shaking of the knob during operation, and the stability of micro-metering operation in the calibration process is ensured.

The application relates to a hydraulic inertia damper amplification type spacer rod, which comprises a spacer rod frame, a damping spacer rod connected outside the spacer rod frame, and a wire clamp connected to the damping spacer rod. The damping spacer rod is connected with springs on both sides, and a torsional energy dissipation unit is arranged at the contact position of the damping spacer rod and the spacer rod frame. A hydraulic inertia damper is arranged inside the spacer rod frame, and the hydraulic inertia damper is connected with a mass ball through a spring. The energy dissipation and vibration reduction effect of the application is good.

The invention relates to the technical field of supervision control and data acquisition, and discloses a scented tea processing temperature and humidity intelligent monitoring method based on the Internet of Things. According to the method, indoor and outdoor environment parameters and personnel activity data of a cavity are collected in real time through a multi-mode sensing network, a disturbance event recognition model is used for early warning a door opening approaching event in advance, the temperature and humidity variation is predicted based on a physical model, and a feedforward compensation control instruction is generated; pID feedback control is combined to form a dual-mode cooperative control signal, and an execution mechanism is driven to adjust in advance to offset environmental disturbance impact. The system comprises a multi-mode sensing module, a disturbance prediction module, a trend prediction module, a dual-mode control module and an execution driving module. According to the invention, the change from post correction to pre-control in advance is realized, and the stability of temperature and humidity control and the product consistency in the scented tea treatment process are obviously improved.

A parameter determination method for reducing the disturbance of satellite laser terminals caused by dual-axis solar array rotation is proposed. Addressing the problem of the severe impact of the stepping motion of dual-axis solar arrays on satellite attitude at large inclination angles, a whole-satellite dynamics and control model is established based on the virtual power principle, considering satellite orbital parameters, solar array drive mechanism parameters, solar array structural parameters, and reaction wheels. Optimization methods are then used to optimize key parameters affecting satellite attitude caused by dual-axis solar array rotation, obtaining usable parameters for reducing solar array disturbance. This method can effectively reduce the impact of dual-axis solar array rotation on satellite attitude jitter, lower the development cost of high-precision, high-stability pointing laser payloads on satellites, and improve the on-orbit robustness of such payloads.

The utility model relates to cable protection equipment technical field, concretely relates to the wire cable and anti -bending structure of anti -bending, wherein, the anti -bending structure includes the protection mechanism, and the protection mechanism mainly is connected with the length adjusting mechanism by two fixed bases and is constituted, and the fixed base both ends are equipped with fixed bolt symmetrically, and the bolt output end connects the self -adaptation clamping assembly, and this clamping assembly adopts three -layer composite structure: rigid support layer provides main clamping force, and elastic buffer layer absorbs vibration stress, and the resistance block on rubber pad ensures that cable is fixed and does not slide. The length adjusting mechanism includes fixed cylinder and movable column, and realizes the flexible adjustment of protection mechanism length through sliding fit. The utility model discloses through multilayer clamping structure and adjustable design, effectively solved the problem that traditional protection device clamping force is uneven, and cable surface is easy to damage, has the characteristics such as structural stability, installation flexibility, good protection effect.

The invention relates to the technical field of ice cream processing, and discloses a raw material preparation method and system.The raw material preparation method comprises the steps that various raw materials are mixed to form an ice cream mixture, and the mixture is subjected to temperature and shear force synergistic treatment; monitoring the dynamic viscosity and temperature data of the mixture in real time, and inputting the dynamic viscosity and temperature data into the collaborative regulation and control model; according to the model output, dynamically adjusting temperature and shearing action parameters in the co-processing process to enable the state of the mixture to approach to a preset target state; calculating an expansion rate index predicted value and a melting resistance index predicted value based on the regulated and controlled state data of the mixture; and comparing the predicted value with a preset target value, and correspondingly adjusting the raw material preparation parameters and the material pretreatment parameters according to a comparison result. Through real-time monitoring, model cooperative regulation and prediction feedback, closed-loop and adaptive control of the ice cream production process is realized, and the problem that the expansion rate and the melting resistance of the ice cream are difficult to control is solved.

The present application relates to the technical field of electrode material recycling, and particularly relates to a method for recycling lithium salt in a lithium-ion battery with a state of charge. The method for recycling lithium salt in a lithium-ion battery with a state of charge comprises the following steps: disassembling a lithium-ion battery with a state of charge to obtain a lithium-embedded graphite negative electrode; placing the lithium-embedded graphite negative electrode into a solvent, allowing it to react and separate to obtain a lithium salt solution; and evaporating and concentrating the lithium salt solution to obtain lithium salt. The present application solves the technical problem of low leaching rate of lithium salt in the existing lithium-ion battery recycling technology, and also solves the problems of high cost, high energy consumption and poor environmental protection in the existing lithium-ion battery recycling technology.