41results about How to "Avoid mutation" patented technology

The invention discloses a permanent magnet synchronous motor sensorless control method based on a dynamic position error. A transition stage is provided, per-unit estimation position errors between a first position error signal obtained based on a high-frequency signal injection method and a second position error signal obtained based on a sliding mode observer are compared, an optimal switching speed point is dynamically determined, smooth fusion is carried out on the two position errors by using a nonlinear weighting function, and the optimal switching speed point is obtained. And finally, the estimated position and rotating speed are obtained through a phase-locked loop. And finally, position tracking is carried out by adopting different error signals according to the estimated rotating speed. According to the method, the problem of estimation value pulsation and jump caused by the fact that a traditional method depends on fixed experience switching points is solved, smooth and self-adaptive switching of the two estimation methods in the full-speed domain range is achieved, the control precision and operation stability of the system are remarkably improved, the structure is simple, and engineering implementation is easy.

This application discloses a method and apparatus for water-guided laser curve processing based on curvature adaptive variable voltage amplitude-frequency, relating to the field of water-guided laser processing technology. It includes: collecting curvature radius data at various points along the water-guided laser processing path; establishing a control mapping model between the curvature radius and deflection voltage parameters based on the curvature radius data; wherein the deflection voltage parameters include voltage amplitude and driving frequency; using the curvature radius of the current processing point as input, obtaining a target voltage amplitude and target driving frequency that match the curve characteristics corresponding to the current curvature radius through the control mapping model; converting the target voltage amplitude and target driving frequency into driving signals and outputting them to the deflection electrode array to dynamically adjust the deflection voltage parameters and control the water beam to complete deflection scanning processing along a preset curve trajectory. This solves the problems of mismatch between deflection response and curve geometry, large trajectory tracking errors, and poor surface quality consistency in existing curve processing technologies.

The application provides a cooling tower constant pressure PID adaptive control method and system based on process monitoring, and relates to the technical field of PID control.The method comprises the following steps: decoupling a working condition characteristic index group and a deviation feedback index group; constructing an operating condition vector and matching an initial operating scene group; calling a historical state transition chain, performing scene membership probability correction based on scene state transition prediction, and outputting a real-time operating scene; performing disturbance-free smooth coarse adjustment of the cooling tower constant pressure control; executing fine-grained PID fine adjustment of the cooling tower constant pressure; and performing scene switching analysis under incremental monitoring until the operating scene is changed, triggering fine-grained PID fine adjustment under disturbance-free smooth coarse adjustment. The application solves the technical problem that the prior art usually performs control parameter setting based on single or low-dimensional characteristics, cannot accurately identify the current operating condition category, and thus leads to PID parameter update lag and difficulty in timely matching the actual system dynamic characteristics when the operating condition rapidly changes.

The utility model relates to a TTL and RS232 intelligent automatic switching circuit comprising a change-over switch, a first movable contact of which is used for connecting a sending pin of a communication interface, a second movable contact of which is used for connecting a receiving pin of the communication interface, and a first static contact and a second static contact of which are respectively connected to a receiving end and a sending end of a TTL signal transmit-receive circuit, the third static contact and the fourth static contact are respectively connected to the receiving end and the transmitting end of the RS232 signal transceiving circuit; the control switch is connected in series between the coil of the change-over switch and the voltage source, and the controlled end of the control switch is connected to the output end of the signal acquisition circuit for controlling the action of the change-over switch; and the input end of the signal acquisition circuit is used for being connected with a sending pin of the communication interface and is used for continuously outputting a high-level signal to the controlled end of the control switch when receiving a level signal smaller than a preset voltage so as to control the control switch to be in a turn-off state. The circuit provided by the utility model can avoid the problem that the plug of the communication interface is plugged in a wrong position in the production link of electronic equipment.

The application discloses a Fin FET device and a manufacturing method thereof. The Fin FET device comprises a semiconductor substrate, a fin structure on the semiconductor substrate, the fin structure comprising a first part and a second part below the first part, an STI structure between adjacent second parts, a gate stack structure across the first part, in contact with the sidewall and the top of the first part respectively, and a source region and a drain region on the first part and on both sides of the gate stack structure. The gate stack structure comprises a gate dielectric and a gate conductor, the gate dielectric comprising a first gate dielectric with a first thickness and a second gate dielectric with a second thickness, the second gate dielectric covering the top surface of the first part and the upper sidewall of the first part, the first gate dielectric covering the lower sidewall of the first part, and the second thickness being greater than the first thickness.

The invention discloses a vehicle fault-tolerant control method under the abnormal condition of a multivariable measurement sensor, and belongs to the crossing field of electric digital data processing and intelligent driving vehicle control technologies. The method comprises the following steps: firstly, based on spatial-temporal correlation and physical consistency constraints of multi-source sensor data, carrying out redundancy modeling and credibility evaluation on a key state of a vehicle; then, when it is detected that the sensor is abnormal, real-time compensation and correction of failure observation are achieved through a state reconstruction model driven by redundant data; and further combining a rapid fault identification and virtual sensor switching mechanism to construct a fault-tolerant control strategy for the minimum function demand of the vehicle so as to ensure that the vehicle can still maintain basic driving and safety control capability under the condition that the functions of part of sensors are damaged. According to the invention, the real-time performance of the system is ensured, the safety and robustness of the intelligent driving vehicle in a complex environment and an abnormal condition are obviously improved, and the method is suitable for a multi-sensor fusion intelligent vehicle control system.

The invention discloses a small-scale deformation InSAR time sequence inversion method and system based on multiple stable points, and the method comprises the following steps: S1, carrying out the small baseline interference processing of multi-temporal synthetic aperture radar data, and screening high-coherence pixel points, S2, recognizing a stable point candidate set with dense spatial distribution; s3, constructing an initial atmospheric delay phase model covering a full interferogram range; s4, obtaining an interferometric phase after atmospheric correction; and S5, inverting the deformation rate and the deformation time sequence parameters of the InSAR again. According to the method, dense stable points are screened based on a deformation rate threshold value, and a space atmosphere model is constructed, so that the problem that atmosphere delay and nonlinear deformation are difficult to separate in InSAR time sequence analysis is effectively solved, and high-signal-to-noise-ratio and high-precision time sequence monitoring of small-scale weak deformation of the earth surface is realized.

The present disclosure provides an image processing method, which relates to the technical field of image processing. The method comprises the following steps: performing scene recognition on an image, and determining a scene region according to a scene recognition result; dividing the image into a plurality of image blocks, and determining at least one adjacent image block of a pixel point; obtaining a target image parameter of the pixel point according to an image parameter of the pixel point and a mapping relationship between the adjacent image block and a target scene region corresponding to the image parameter; and adjusting the image parameter of the pixel point in the image according to the corresponding target image parameter. The present disclosure can improve the image parameter correction accuracy of a multi-scene image.

The application relates to the technical field of stem cells, and specifically discloses a drying protective agent and a cell drying process of mesenchymal stem cells. The drying protective agent provided by the application comprises the following components in the following contents: EGCG: 5-45 mg / 100 mL, hydroxytetrahydro pyrimidine: 400-520 mg / 100 mL, vitamin C: 350-500 mg / 100 mL, edaravone: 0.02-0.3 mg / 100 mL, quercitrin: 0.10-0.35 mg / 100 mL, aspartic acid: 180-280 mg / 100 mL, tetrahydro pyrimidine: 400-500 mg / 100 mL, trehalose: 10-60 g / 100 mL, dextran: 20-50 g / 100 mL, maltose: 25-40 g / 100 mL and 2,3,4,6-tetraacetyl-d-glucose: 30-60 mg / 100 mL, and the solvent is a phosphate buffer solution PBS; the application also provides a cell drying process, which comprises the following steps: cold-heat cycle treatment and drying; wherein the cold-heat cycle treatment adopts the aforementioned drying protective agent. The drying protective agent provided by the application can avoid damage of mesenchymal stem cells in the drying process, so that the survival rate of the mesenchymal stem cells after rehydration is improved.

The invention discloses a temperature and humidity regulation and control system and method for cigar tobacco alcoholization. The method comprises the following steps: collecting and storing temperature and humidity rhythm data corresponding to natural temperature and humidity fluctuation characteristics of cigar tobacco in a dry season and a rainy season; calling corresponding temperature and humidity rhythm data, calculating a bias coefficient, generating a corresponding coordinated regulation and control instruction sequence set to drive an execution unit to realize dynamic coordinated regulation of temperature and humidity, and generating a corresponding temperature and humidity joint control rule; the current season is compared and judged, temperature and humidity rhythm data are automatically loaded, a smooth transition regulation and control program is executed before season alternation, and meanwhile corresponding cigar tobacco alcoholization temperature and humidity regulation and control work is called and executed; real-time temperature and humidity parameters and a condensation state are monitored in real time, when the real-time temperature and humidity parameters are detected to exceed the limit or a condensation signal is detected, sound-light alarm, remote pushing and emergency regulation and control operations are triggered immediately, and meanwhile, whole-process data are recorded for backtracking the cigar tobacco alcoholization process. The cigar tobacco alcoholization temperature and humidity regulation and control efficiency can be improved.

This utility model discloses a grounding strip with a braided structure, belonging to the field of lightning protection grounding technology, including a graphite braided strip and a reinforcing braided layer. The graphite braided strip is formed by weaving graphite wires. The reinforcing braided layer is a layered structure formed by weaving a mixture of reinforcing wires and graphite wires, and the layered structure of the reinforcing braided layer is arranged circumferentially along the interior of the graphite braided strip. The graphite braided strip, woven from graphite wires, provides excellent conductivity and corrosion resistance. The reinforcing braided layer, formed by weaving a mixture of reinforcing wires and graphite wires, enhances the mechanical strength of the grounding strip and reduces the probability of damage or breakage. The mixed weaving of graphite wires and reinforcing wires serves as a structural transition, avoiding discontinuities or abrupt changes in the resistivity of the graphite braided strip, which would lead to an increase in overall grounding resistance and a reduction in current discharge efficiency. The integrated braided structure gives the grounding strip both flexibility and strength, facilitating installation and transportation.

The application discloses a bolt tightening method based on a vision-language-action model, and belongs to the technical field of intelligent manufacturing. The method comprises the following steps: collecting scene image data of a target bolt and a workpiece region around the target bolt, extracting multi-scale visual features from the collected scene image data, and obtaining a multi-scale visual feature vector Fv; performing semantic analysis on a natural language instruction to obtain a language feature vector Fl; performing cross-modal feature alignment on the Fv and the Fl to obtain an aligned feature vector Fvl; performing action decoding and parameterized mapping processing on the Fvl to generate an action parameter vector Fd; inputting the Fd into a control execution module to perform kinematics solving and control instruction generation, so as to drive an automated execution device to complete a bolt tightening operation. The method can improve the accuracy, adaptability and stability of bolt tightening operation under complex working conditions, and effectively reduce the labor cost of bolt tightening work.

The invention relates to the technical field of plastic sheet processing equipment, in particular to a full-automatic winding and cutting integrated device for PET sheet production and a method of the full-automatic winding and cutting integrated device. According to the technical scheme, the full-automatic winding and cutting integrated device for PET sheet production comprises a device bottom frame, a moving assembly, a winding assembly and a sheet processing frame, the moving assembly is arranged on one side of the surface of the device bottom frame, and the sheet processing frame is arranged on the surface of the moving assembly; when it is detected that the current winding roller reaches the preset winding diameter or length, a control system instructs a driving motor to drive a mounting frame to turn over, so that a standby winding roller automatically enters a working position, meanwhile, a moving assembly adjusts the position of a sheet processing frame, a built-in cutting and attaching module is aligned with a new winding roller, and then the cutting and attaching module is moved to the new winding roller. The cutting module automatically cuts off the sheet, the overturning and attaching module acts immediately, the new starting end of the sheet is firmly pressed on the surface of a new winding drum, and production pause and artificial quality fluctuation in the reel changing link are thoroughly eliminated.

The application provides a micro light emitting diode low-power adaptive control method and system, belonging to the technical field of display device manufacturing. The method adopts a convolutional neural network to determine a frame brightness mean value prediction sequence, which can realize accurate prediction of the brightness change trend of display content. When the frame brightness mean value prediction sequence presents a continuous downward state, the power supply parameters of the micro light emitting diode are smoothed, which can make the power supply parameters smoothly transition. When the perceived brightness fluctuation period exceeds a preset smooth transition threshold, a PID control algorithm is used to optimize the smoothed power supply parameters, which can further refine the power supply parameter adjustment. When the user experience correction factor exceeds a preset user experience correction factor threshold, the power supply parameters of the micro light emitting diode are adjusted, which can realize further iterative optimization of the power supply parameters, effectively retain picture dark part details, avoid high-frequency detail area brightness attenuation, and improve user experience while ensuring low power consumption.

The utility model discloses a valve device and gas water heater relates to water heater technical field, wherein, valve device includes valve body and valve core subassembly, valve body is equipped with valve cavity and with the water inlet channel of valve cavity communication, first water outlet channel and second water outlet channel, and first water outlet channel has with the first water pass -through of valve cavity communication, and second water outlet channel has with the second water pass -through of valve cavity communication, valve core subassembly rotatablely is located in valve cavity, valve cavity includes the first valve core and second valve core of axial interval, and first valve core is equipped with overflow hole, and the first valve core rotation can change the conduction area of overflow hole and first water pass -through, and the conduction area is gradually changed design when first valve core rotates, and second valve core is used for shielding or open second water pass -through to adjust the conduction area of valve cavity and second water outlet channel. The utility model provides technical scheme can promote the regulation precision of water flow flow.

The invention discloses a double-cylinder external rope controllable telescopic six-section cargo boom system, which belongs to the technical field of cranes, and comprises a basic boom, a second-section boom, a third-section boom, a fourth-section boom, a fifth-section boom, a sixth-section boom, a first telescopic oil cylinder, a second telescopic oil cylinder and a control rope group, a basic arm, a second-section arm, a third-section arm, a fourth-section arm, a fifth-section arm and a sixth-section arm are sequentially connected in a nested mode through nylon sliding blocks from outside to inside, the head of a piston rod of a first telescopic oil cylinder is hinged to the arm tail of the basic arm, and a cylinder barrel of the first telescopic oil cylinder is hinged to the arm tail of the second-section arm. The head of a piston rod of the second telescopic oil cylinder is hinged to a cylinder barrel of the first telescopic oil cylinder, and the cylinder barrel is hinged to the arm tail of the third-section arm. By arranging the extension arm pulley outside the suspension arm, sudden change of the section of the suspension arm is avoided, so that stress of each section arm is uniformly distributed, later inspection and early warning of a rope are facilitated, a two-stage oil cylinder is adopted, and the suspension arm has the advantages of simple structure, low processing and manufacturing requirements and low cost.

The invention discloses a direct-current voltage improvement method of an ice melting device, which belongs to the technical field of electrical engineering and comprises the following steps of: setting a direct-current reference value, and generating an initial modulation direct-current voltage through a direct-current control loop; adjusting the initial modulation direct-current voltage to enable the initial modulation direct-current voltage to be matched with the integral multiple of the rated capacitor voltage of the sub-modules of the ice melting device, and obtaining the adjusted modulation direct-current voltage for eliminating the fluctuation of the input number of the sub-modules of the ice melting device caused by the non-integral multiple voltage; correcting a direct current reference value by adopting a dual-mode control strategy; real-time direct current is monitored, and when the real-time direct current exceeds the deviation range of the preset target value, correction is conducted again through the dual-mode control strategy. By introducing the dual-mode control strategy, namely using the starting mode and the steady-state mode, the ice melting current is gradually increased to the preset target value in the system starting stage, and sudden change of the current is avoided.

This invention relates to the field of vehicle technology and discloses a steering control method, device, and vehicle. The steering control method includes: acquiring the vehicle speed and, based on the correlation between the vehicle speed and the steering assist style, acquiring a target steering assist style adapted to the vehicle speed; acquiring a target assist torque corresponding to the target steering assist style based on the vehicle speed and the correlation between the steering assist style and a preset assist torque; and adjusting the vehicle's steering torque based on the target assist torque. This invention can enhance the user's active control over the vehicle's steering and make the steering control more in line with the user's driving intentions and personalized needs.

This invention relates to the field of digital image processing technology, and discloses a digital image processing method and system for video. The method involves: acquiring multiple image data streams and performing coordinate transformation and spherical projection to obtain a panoramic stitched image; extracting a preset set of bounding boxes from the panoramic stitched image and performing target recognition to obtain a first detection position of the ball target and a second detection position of the player target; calculating the first real-time position and first velocity of the ball target, and calculating the second real-time position and second velocity of the player target; determining the center coordinates and screen range of the broadcast view, and generating an automatically directed video stream based on the center coordinates and screen range of the broadcast view. This invention effectively solves the stitching seam problem caused by depth parallax in traditional panoramic stitching algorithms based on feature point matching by fixing and calibrating feature points on the court surface and utilizing the single-plane characteristic of the court surface.

The application relates to a distributed photovoltaic output control method, device, equipment, medium and program product. The method comprises the following steps: collecting the running state data of a current time window of a transformer area and a distributed photovoltaic access point; calculating a transformer area safety budget value in a next time window; performing consistency constraint processing on the transformer area safety budget value to obtain a final safety budget value; obtaining a final predicted safety margin of a preset future time range according to a historical running state data sequence; determining a safety control parameter according to the relationship between the final predicted safety margin and a preset safety margin threshold; and generating a control instruction according to a preset safety budget allocation rule, the final safety budget value, the safety control parameter and the final predicted safety margin, and instructing a transformer area side terminal to control the output of a distributed photovoltaic unit in the transformer area based on the control instruction. The method can control the output of the distributed photovoltaic unit in a timely manner.

The application discloses a kind of curved surface film covering flatness dynamic monitoring and optimization method of embodied robot, it is related to flexible electronic manufacturing technical field, and this method includes: coarse adjustment step, by projection device projection interference fringe to flexible film material surface, by first camera image acquisition and calculate first height distribution and global flatness index, by first controller driving clamp is adjusted, so that index satisfies first threshold value;Fine adjustment step, by stereo vision system obtains film material three-dimensional topography and obtains second height distribution, compares it with target topography and obtains residual error, based on residual error and pre-calibrated clamp-topography sensitivity matrix, by the optimization model with regularization calculation each clamp fine adjustment amount and drive execution, so that flatness index satisfies more strict second threshold value;Coarse adjustment and fine adjustment are cyclically executed, and control weight is dynamically adjusted to realize smooth transition and closed-loop control.The application realizes the high-precision, adaptive flatness control of film covering on complex curved surface.

The application discloses a kind of electric toothbrush head and its factory detection method.The toothbrush head includes brush head body, hair planting layer, cushion gas bag, bar-shaped identification element and trigger indication component, bar-shaped identification element is synchronous deformation with gas bag deformation, trigger indication component is triggered when gas bag deformation reaches preset value and makes warning color shift into observation window.Factory detection method includes pipeline full detection and batch sampling inspection: initial bending angle and initial pressure are detected when full detection, uniform speed is discharged simultaneously with pressure and bending angle to calculate linear correlation coefficient, determine pressure-deformation linearity, simultaneously capture trigger pressure and warning color verification trigger accuracy;When sampling inspection, sample is accelerated aging, gas bag pressure attenuation and bristle wear parameter are monitored synchronously, to determine life matching whether the first failure time deviation of the two is not greater than threshold value.The application realizes full-process automatic detection, ensures gradual change indication smooth, end point signal reliable, and quantitatively guarantees that gas bag and bristle life are synchronous.

The invention provides a voltage bleeder circuit suitable for positive and negative voltage output VCOM and a display driving chip, and the voltage bleeder circuit comprises a bleeder unit which is connected between the output end of the VCOM and a reference ground, and is used for discharging the positive voltage or the negative voltage of the output end of the VCOM to the reference ground in a bleeder mode; the control unit is connected to the control end of the discharge unit and is used for adaptively generating a grid control voltage according to the voltage polarity of the VCOM output end in a discharge mode so as to control the discharge unit to be conducted; wherein the discharge unit is in a turn-off state during normal work, and is turned on in response to grid control voltage in a discharge mode, so that self-adaptive discharge of positive voltage or negative voltage is realized. The voltage discharge circuit is low in cost, can rapidly and safely discharge the output voltage, protects the safety of devices, can be widely applied to various liquid crystal display driving chips, and has very high industrial practical value.

The present application relates to the technical field of building material quality detection, and more particularly to a building material quality detection system based on image recognition. The system includes a mobile path planning module, an image acquisition module, a grayscale analysis module, an illumination parameter correction module, and a quality visual recognition module. By collecting images on the surface of the building material to be detected and combining image preprocessing, grayscale contrast, illumination correction, and texture feature extraction, the present application achieves efficient identification and accurate positioning of surface defects of building materials. The system can distinguish between fine cracks, surface flaws, and structural defects, and provide corresponding quality analysis results during the detection process. By optimizing path planning, image processing, and defect recognition, this technology improves the automation level of quality detection and enhances the stability and accuracy of the detection system, thereby providing reliable technical support for quality monitoring of building materials.

The application provides a high-pressure rotary jet pile construction optimization control method, and relates to the technical field of rock foundation construction control.The application obtains soil types and permeability coefficients layer by layer along the depth, constructs a slurry diffusion model based on fluid-solid coupling theory, calculates a pressure field, and outputs a slurry saturation space distribution matrix.A strength mapping program is used to obtain a pile body compressive strength prediction value, a gradient descent correction mechanism is activated after comparing the prediction value with a target strength, the correction amplitude is adaptively adjusted according to the soil types, and the boundary initial value is updated.After convergence, the optimal slurry flow and jetting pressure are used as the boundary initial value of the next depth layer, and the optimal construction parameter sequence of the whole pile length is generated by layer-by-layer recursion to the pile bottom.The interlayer transfer of the slurry flow and the jetting pressure guarantees the physical continuity of the construction state, and the gradient correction amplitude is adaptively matched with the stratum condition, so that the optimization result directly corresponds to the equipment operation freedom, and the control accuracy and the executability are improved.

The invention discloses a heterogeneous pipe connecting structure for transmitting loads. The heterogeneous pipe connecting structure comprises a composite pipe, a front connector, a rear connector, a front auxiliary connector and a rear auxiliary connector. The front joint comprises a front joint external thread section and a front joint bonding section; a front joint inner bonding cavity, a front joint inner thread cavity and a front joint cavity are formed in the front joint; the rear joint comprises a rear joint body, a rear joint internal thread cavity, a rear joint transition cavity, a rear joint internal fine thread cavity and a rear joint bonding cavity; the outer surface of the composite pipe is bonded with the metal joint, the inner surface of the composite pipe is bonded with the metal auxiliary joint, and the joint and the auxiliary joint form an integral structure through the fine threads, so that the bonding area of the composite pipe and the metal joint is increased, and the bonding strength is improved. A plurality of annular grooves are formed in the bonding surfaces of the front joint, the front auxiliary joint, the rear joint and the rear auxiliary joint of the metal part, so that the uniformity of a bonding agent is effectively improved, and the bonding sealing performance of the composite pipe and the metal joint is improved after secondary bonding.

This invention provides a full-load high-efficiency steam turbine unit, a thermal system, and an operating method. At least two steam channels (7) are radially arranged in the regulating stage (6) at the front end of the high-pressure cylinder (4). When the thermal system is in different load ranges, it can switch to the corresponding steam channel (7) for operation. The different steam flow capacities between different steam channels (7) and the different number of pressure stages they are equipped with are used to adapt to different load conditions, ensuring high circulation efficiency and low system energy consumption under medium and low loads. The main steam valve (5) and regulating valve (51) set in the pipeline system are used to control the opening and closing of each steam channel (7). In addition, by setting up a multi-level branch steam network, a smooth transition can be achieved when switching between different steam channels (7), avoiding sudden changes in steam flow. Under medium and low loads, by leading an extraction pipe out of the end of the regulating stage (6) and connecting it to the adjustable heater (19), the water temperature at the inlet of the boiler (1) is increased. The flue gas temperature at the denitrification point is adjusted according to actual needs to meet the denitrification requirements.

This invention discloses an enhanced antistatic polyetheretherketone (PEEK) composite material and its preparation method. The composite material is prepared from the following raw materials in parts by weight: 60-85 parts of PEEK resin, 5-15 parts of a first synergistic component, 3-10 parts of a second synergistic component, 2-8 parts of a third synergistic component, and 1-5 parts of a high-temperature processing aid. The first synergistic component is a mixture of a metal-based conductive filler and a high-temperature resistant antistatic synergist; the second synergistic component is ionic liquid-functionalized modified graphene; the third synergistic component is a composite of carbon nanotubes and conductive nanofibers; and the high-temperature processing aid includes a high-temperature lubricant and a high-temperature antioxidant. The preparation method includes steps such as preparing various premixes, melt blending, extrusion granulation, and supercritical fluid in-mold foaming. This invention constructs a stable three-dimensional conductive network through the synergistic effect of multi-scale conductive fillers, giving the composite material excellent antistatic properties.

This invention provides a method and system for updating the personality parameters of a digital avatar based on implicit user feedback. The method includes: extracting implicit feedback signals from user-digital avatar interaction logs; performing weighted linear fusion and smoothing on the implicit feedback signals to obtain a smoothed reward value; calculating the policy gradient using a proximal policy optimization algorithm based on the smoothed reward value, and limiting the single-step update amplitude with a pruning objective function to perform gradient ascent, obtaining candidate updated personality parameter vectors; calculating a deviation metric by combining the baseline personality parameter vector, and comparing it with a preset drift threshold; when the deviation metric is greater than the drift threshold, projecting the personality parameter vector to the feasible region boundary and outputting the target personality parameter vector; otherwise, using the candidate updated personality parameter vector as the target personality parameter vector. This invention significantly reduces the feedback acquisition threshold, ensures the numerical stability of the personality parameter update process, and avoids personality drift in reinforcement learning.

The present application relates to the technical field of plant induced regeneration, and particularly relates to a high-efficiency artificial propagation method of jixiang grass, comprising the following steps: cutting the year-old stem with bud roots after sterilization treatment into about 0.5*0.5cm, and inoculating the stem with bud roots into culture medium A; cutting the stem with bud roots in the culture medium A to 1.5-2.0cm high with petiole, and transferring the stem with 3-4 leaf blades into culture medium B for culture for 60 days; cutting the cluster culture in the culture medium B into 1.0*1.0cm with 2-4 leaf blades reserved and cut to 1.5-2.0cm high, and transferring a single plant into culture medium C; when the test tube seedling is as high as 8-10cm, and the seedling is strong and thick, the test tube seedling is taken out and transferred into a substrate for culture, and the survival rate is 100% after 60 days. The present application realizes high-efficiency occurrence of the jixiang grass stem cluster buds, and the whole culture process can be completed only by two culture media except for the ex-plant starting culture, so that the artificial in-vitro propagation efficiency is greatly improved, the cost is low, the cycle is short, the seedling quality and survival rate are high, and technical support can be provided for factory scale growth.