33results about How to "Accurate compensation" patented technology

The invention discloses a multi-dimensional cutting precision control system applied to a laser pipe cutting machine, and relates to the technical field of laser cutting control, and the multi-dimensional cutting precision control system comprises a data acquisition module, a prediction module, an actual verification module, a judgment module and a response module; the data acquisition module is used for acquiring cutting track data of the initial laser pipe cutting machine, including but not limited to cutting speed, cutting depth, cutting angle and cutting path; a sensor is installed at the corresponding position of the laser pipe cutting machine; according to the laser pipe cutting machine, through the integrated data acquisition module, key parameters such as the cutting speed, depth, angle and path of the laser pipe cutting machine in the cutting process can be monitored in real time, the control precision of the cutting process is remarkably improved, and therefore the consistency and reliability of the cutting quality are ensured; the system can more accurately predict and compensate deviation possibly occurring in the cutting process, and the rejection rate caused by parameter fluctuation is reduced.

The invention relates to the technical field of color correction, and discloses a publication printing color correction method and system based on deep learning, and the method achieves the precise correction and compensation of the color of a publication printed matter through a series of steps of cosine distance calculation, color-environment matching model, color deviation calculation, operation parameter adjustment and the like. The core of the method lies in that the accuracy of the printing color is effectively improved and the color quality of the printed matter is ensured to meet the expected standard through careful analysis and processing of the printing color by using the deep learning technology. The correction method provided by the invention has obvious advantages, not only can realize automatic color correction, reduce human intervention and improve the stability and consistency of correction, but also can optimize the operation parameters of the printing equipment, so that the printing equipment can keep a good working state in different printing environments, and the adaptability of the printing process is enhanced.

The invention relates to a time-resolved spectral measurement method, device and equipment based on a multi-event time-to-digital converter, and a medium, and the method comprises the steps: carrying out the histogram statistics of photon signals of different time responses in each column of single-photon avalanche diodes in different laser pulse periods through the multi-event time-to-digital converter, the photon signal distribution of the photon signal of the specific wavelength corresponding to each column of single-photon avalanche diodes in different laser pulse periods is determined; the multi-event time-to-digital converter carries out delay combination on photon signal distribution in different laser pulse periods so as to determine a photon lifetime curve corresponding to the photon signal of the specific wavelength of each column of single-photon avalanche diodes. And integrating the photon lifetime curves corresponding to the photon signals of the specific wavelength of each column of single-photon avalanche diodes so as to construct the time-resolved spectrum of the sample to be detected. According to the invention, counting loss or time error caused by dead time can be reduced.

The invention discloses a floating type draught fan power control method and device based on wave interval estimation and a medium, and relates to the technical field of draught fan control. The method comprises the steps that an observed value of a state variable at the current moment and a predicted value of a control input quantity at the previous moment are obtained; determining an estimated value of wave interference at the current moment; determining a predicted value of the wave interference at the next moment based on the estimated values of the wave interference at the current moment and the previous moment by using a wave interference predictor; using a state predictor to determine a predicted value of a state variable at the next moment based on the observed value of the state variable at the current moment and a predicted value of wave interference at the next moment, and using a time delay controller to determine a predicted value of a control input quantity at the current moment; and controlling the floating fan at the current moment by using the predicted value of the control input quantity at the current moment. According to the invention, accurate compensation and control of wave interference are realized.

The invention discloses a low-voltage ride-through control method considering voltage measurement delay estimation, and the method comprises the steps: carrying out the modeling of a typical vector control system of a doubly-fed wind power system, obtaining a reactive power output limiting condition, and carrying out the building of a voltage measurement equipment output model, on this basis, a cosine interpolation fitting method is adopted to accurately estimate the time delay of a voltage measurement device for the grid-connected point voltage of the doubly-fed fan, and after accurate time delay estimation is determined, the time delay is substituted into a low-order time delay compensation control link, so that the power instruction of the doubly-fed fan is compensated. According to the method, the actual voltage delay of the grid-connected point is accurately estimated, and a voltage measurement delay compensation method is adopted to optimize a voltage control strategy of the doubly-fed fan, so that the problem of overvoltage of the grid-connected point caused by delay of a voltage measurement link is reduced.

The invention provides a flight attitude stability control method for an unmanned aerial vehicle with arms, and the method comprises the steps: S1, building an attitude kinematic model of the unmanned aerial vehicle according to an unmanned aerial vehicle model; s2, according to the attitude kinematics model of the unmanned aerial vehicle, establishing an attitude kinematics model of the unmanned aerial vehicle with the arm; and S3, establishing an adaptive control model, adjusting parameters of the attitude kinematics model of the unmanned aerial vehicle with the arm in real time, and performing attitude control on the unmanned aerial vehicle with the arm. Mechanical arm interference is introduced into the unmanned aerial vehicle attitude control system, the environment interaction capability of the unmanned aerial vehicle with the arm is greatly improved, and the real-time performance and stability of the system are enhanced.

The invention discloses a household appliance, which comprises a shell, a motor and a controller, and is characterized in that the motor is arranged in the shell and is used for operating according to alternating current input voltage; the controller is configured to detect motor parameters of the motor in real time when the motor operates; determining a q-axis voltage compensation value of the motor based on the motor parameters of the motor; adjusting the q-axis voltage value of the motor according to the q-axis voltage compensation value to adjust the voltage value of the motor to the target voltage value, thereby reducing the low-frequency pulsation of the motor, achieving the precise regulation and control of the motor, facilitating the improvement of the stability of the motor, prolonging the service life of the motor, and improving the overall performance of the electric equipment and the user experience.

The method comprises the following steps: extracting frequency information of power grid voltage based on a characteristic harmonic compensation method of an improved STATCOM to obtain a reference phase and frequency of h-order harmonic; the load current is converted into a d-q coordinate system through a Cabc-dqh change matrix module and decomposed into a load active current component and a load reactive current component, and then a reference current instruction value is obtained through low-pass filtering; performing low-pass filtering on the active current component and the reactive current component to obtain a system side current component as a reference value; comparing each separated harmonic current component with a reference value, and inputting the current components to a fuzzy PI controller to obtain voltage compensation instructions of the characteristic harmonic waves under a d axis and a q axis respectively; and superposing each compensation instruction and the original reactive compensation and direct-current voltage control instruction of the STATCOM, and then inputting PWM (Pulse Width Modulation) to enable the STATCOM to output current containing a characteristic harmonic compensation component. According to the method, multi-synchronous rotating coordinate system detection and fuzzy PI adaptive control are introduced, and dynamic and accurate compensation of multiple characteristic harmonics is realized on the premise of not changing the main circuit topology of the STATCOM.

The invention discloses a robot joint with multi-pole-pair asymmetric magnetic braiding, a joint module and a motor driver, the joint module is provided with a rotating shaft, and the rotating shaft is provided with a permanent magnet which rotates coaxially and is excited radially; a magnetic encoder chip is arranged on the motor driver and is used for sensing the pointing angle of the permanent magnet; the motor driver is electrically connected with a three-phase port of a motor in the joint module; the excitation of the permanent magnet is multi-pole-pair and asymmetric, the number P of pole pairs is larger than 1, a symmetric excitation reference line is obtained by equally dividing the permanent magnet into P parts along a mechanical rotation angle, the actual excitation of the permanent magnet and the symmetric excitation reference line do not coincide and are staggered by a certain angle, and the staggered angle continuously changes along with the mechanical rotation angle. According to the robot joint with the multi-pole-pair asymmetric magnetic braiding, the limitation of conventional multi-pole-pair magnetic braiding on mechanical angle compensation can be overcome, and the angle sensing and control precision of a robot joint module is improved.

The embodiments of the present application provide an error calibration device, method, equipment and storage medium, which relate to the field of semiconductor technology, and solve the technical problem that the comprehensive error formed by the overlap of the coaxial error and the lifting offset error is difficult to detect and difficult to compensate for. The error calibration device of this scheme can be applied to test equipment that needs to use a coaxial camera. The test equipment can use an auxiliary camera and a coaxial camera to observe and identify the marking points on the two calibration plates, and use the auxiliary camera and the fixed marking points of the second calibration plate as a reference to observe the position coordinates of the calibration marking points of the coaxial camera and the first calibration plate before and after lifting, so as to compare the coordinates obtained before and after lifting to determine the comprehensive error in the target direction, which helps to reduce the cumulative impact of error variables, thereby quickly and effectively realizing the calibration of errors, so that the compensation of accuracy can be more accurate and simpler.

The embodiment of the invention provides a power grid harmonic reactive compensation method and system based on a synchronous boosting transformer, and relates to the technical field of power grid harmonic reactive compensation, and the method comprises the steps: collecting the instantaneous voltage information and instantaneous current information of a power grid, and the voltage information and current information of a winding of the synchronous boosting transformer; analyzing an instantaneous harmonic demand and an instantaneous reactive demand of the power grid according to the instantaneous voltage information and the instantaneous current information of the power grid; analyzing a magnetic state and a saturation risk of the synchronous boosting transformer according to the voltage information and the current information of the winding of the synchronous boosting transformer; generating a compensation current instruction according to the instantaneous harmonic demand, the instantaneous reactive demand, and the magnetic state and saturation risk of the synchronous boosting transformer; and generating a compensation current according to the compensation current instruction and injecting the compensation current into a power grid. The power quality and the operation stability of the power grid can be improved.

The application discloses a kind of based on computer simulation building carbon emission prediction method and system, it is related to building energy saving and carbon emission monitoring technical field.The method is represented by equivalent heat network with the heat conduction process of envelope structure, and heat resistance and heat capacity parameters are set as learnable parameters, and are encoded into differentiable calculation layer by automatic differentiation framework;Obtain time-varying marginal carbon emission factor sequence, and multiply energy consumption simulation value and corresponding marginal carbon emission factor element by element by time step by time step by carbon emission factor coupling layer to generate carbon emission simulation sequence;Residual correction network is based on simulation intermediate state quantity and carbon emission simulation sequence to output residual correction value, and the carbon emission simulation sequence is added to obtain carbon emission prediction value;With prediction error as loss function, physical parameters and network parameters are updated simultaneously by back propagation, to realize physical parameter adaptive adjustment.System includes differentiable thermodynamic simulation module, carbon emission factor coupling module, residual correction module, end-to-end training module and prediction execution module.

The application discloses a kind of positioning of long-distance magnetic target and its design method, belong to the target positioning technical field based on magnetic field.It includes: S100, the position coordinates and magnetic moment of magnetic interference source are inverted using short baseline magnetic detection system, then real-time stripping interference magnetic field generated by magnetic interference source at long baseline magnetic detection system using inversion result, finally realize long-distance magnetic target positioning using long baseline magnetic detection system, obtain the magnetic moment vector m2 of magnetic target;S200, according to actual working condition and detection demand, the design method of each parameter of magnetic detection system is proposed in combination with the magnetic moment vector m2.The application uses short baseline magnetic detection system to real-time strip platform magnetic interference, and realizes long-distance magnetic target positioning using long baseline magnetic detection system.

The invention discloses a three-axis stabilized platform servo loop gain change value calibration and compensation method. Firstly, a table body shaft, an inner frame shaft and an outer frame shaft are arranged at 0-degree, 0-degree and 0-degree positions, a servo loop is closed, an external test device inputs sine waves, an output signal of the three-axis stabilized platform is collected, amplitudes of the input signal and the output signal at different frequencies are calculated, and an open-loop amplitude-frequency characteristic curve of the current position of the three-axis stabilized platform is obtained. Secondly, rotating the inner frame shaft by 10 degrees every time, and calculating gain change values of the servo loop of the inner frame shaft at different angles; and finally, fitting a function between the angle of the inner frame shaft and a gain change value through the calibration data, and compensating the function into the servo loop gain of the outer frame shaft. The method for calibrating and compensating the gain change value of the servo loop of the three-axis stabilized platform under the condition that the rotational inertia is uncertain is given for the first time, and the stability of the servo loop when a platform frame system is located at any position of an inner frame is guaranteed.

The application provides a precision attenuation compensation method and system based on a high-precision flattening machine. The method comprises: obtaining precision attenuation evaluation multi-source sensing data by evaluating precision attenuation risk levels, obtaining precision attenuation evaluation influence data by local inversion, obtaining roll system state evolution prediction data by five-field coupling digital twin model analysis, performing multi-objective optimization analysis and processing to obtain feedforward compensation sequence parameters, obtaining flattening machine state evaluation data after compensation execution and stiffness reconstruction processing, obtaining multi-device collaborative compensation values by line multi-device collaborative compensation module analysis, and obtaining flattening measured roll gap analysis precision attenuation compensation evaluation state; the application realizes accurate precision attenuation compensation through adaptive modular sensing, multi-field coupling processing, device and process linkage intelligent decision and self-healing execution, completes data inversion, multi-field coupling prediction, multi-objective optimization feedforward compensation, and macro, micron and thermal deformation multi-scale self-healing execution.

The application discloses a clock synchronization circuit and a clock synchronization method, and relates to the technical field of communication. The clock synchronization circuit of the application comprises a clock synchronization circuit of a receiving circuit and a clock synchronization circuit of a sending circuit. A main receiver and a backup receiver are arranged in the receiving circuit. The delay parameter of the main receiver is obtained by detecting the delay of the backup receiver, so that the clock synchronization of the signal process is realized. Meanwhile, a main sender and a backup sender are arranged in the sending circuit. The delay parameter of the main sender is obtained by measuring the delay of the backup sender, so that the delay of the main sender is compensated, and the clock synchronization during signal sending is realized. The application can compensate the delay generated by each chip in real time, so that the precision of clock synchronization is improved.

An optical device deformation compensation method and system, and a photolithography machine, wherein the optical device is used to transfer a pattern on a mask to a wafer, the optical device deformation compensation method comprises: determining a region with aberration in an actually formed pattern on the wafer according to a difference between the actually formed pattern and a preset pattern; obtaining a deformation compensation amount of a corresponding region of the optical device according to an actual aberration in the region with aberration; and generating a corresponding compensation control signal according to the deformation compensation amount of the corresponding region of the optical device, and controlling a corresponding compensation device to compensate the corresponding region of the optical device. By using the above scheme, the local deformation of the optical device can be accurately compensated, thereby improving the imaging quality of the optical device.

The invention relates to the technical field of Mini-LED chip transfer packaging, and provides a Mini-LED chip huge transfer error compensation method based on a neural network, and the method comprises the steps: S1, obtaining an AOI reinspection result as a first result; s2, sorting the first results according to the transfer sequence, and performing normalization processing on the sorted first results to obtain second results; s3, adjacent interpolation is carried out on the chips with the transfer state identification being abnormal in the second result, and the difference of path variables of all the chips is calculated; s4, defining a multi-layer neural network model, constructing a loss function, and updating the weight of the multi-layer neural network model by using the loss function until the multi-layer neural network model does not have overfitting; and S5, generating a chip transfer path, inputting the chip transfer path into the multi-layer neural network model to obtain a transfer error predicted value, and realizing mass transfer of the chip. According to the method, the motion path is exported and input into the multi-layer neural network before transfer is started, and the predicted transfer error is obtained.

The invention discloses a target graph compensation method and device, a storage medium and electronic equipment. The method comprises the following steps: determining a fitting window; the number of the fitting windows is more than two, and the sizes of the fitting windows are different; calculating graph densities under different fitting windows; obtaining a key size load effect compensation model corresponding to the feature region; the feature region is a region where the target graph is located; the fitting window is greater than or equal to the size of the feature region; calculating a key size load effect compensation value of the graph in the feature region by utilizing the obtained key size load effect compensation model and combining the graph density under each fitting window; and performing critical dimension load effect compensation on the target graph by using the calculated critical dimension load effect compensation value. By adopting the method, the accuracy of complex graph compensation can be improved.

The invention discloses a self-adaptive predefined time fault-tolerant trajectory tracking control method for a quad-rotor unmanned aerial vehicle, and belongs to the field of quad-rotor unmanned aerial vehicle control. The method is characterized by comprising the following steps: step 1, establishing a kinetic model and a mathematical model of the quad-rotor unmanned aerial vehicle; 2, determining a saturation-capacity preset performance index of the four-rotor unmanned aerial vehicle; 3, determining a preset time disturbance observer of the four-rotor unmanned aerial vehicle; step 4, determining a position subsystem of the four-rotor unmanned aerial vehicle; 5, determining an attitude subsystem of the four-rotor unmanned aerial vehicle; and based on the disturbance observer, the position subsystem and the attitude subsystem determined in the steps 3-5, performing fault-tolerant trajectory tracking control of the quad-rotor unmanned aerial vehicle. According to the adaptive predefined time fault-tolerant trajectory tracking control method for the quad-rotor unmanned aerial vehicle, by designing the preset time disturbance observer, the problem of composite disturbance estimation formed by actuator faults and external disturbance is effectively solved, and accurate estimation and compensation within the time specified by a user are achieved.

The application relates to the technical field of display screens, and discloses a self-adaptive adjusting method and device of a display screen, equipment and a storage medium, wherein the method comprises the following steps: determining each environment light partition and a partition exposure value of each environment light partition according to a preset division configuration and a viewing user space image; determining a viewing user distribution area and a viewing range angle according to the viewing user space image; determining an influence weight of each environment light partition according to the viewing user distribution area, the viewing range angle and each partition exposure value; determining a target backlight brightness compensation value and a target Gamma compensation value according to each influence weight, each partition exposure value and a preset compensation mapping table, and performing display adjustment according to the target backlight brightness compensation value and the target Gamma compensation value. Therefore, more accurate display effect compensation is achieved.

The application discloses a time delay interference laser phase noise compensation method and device for optical frequency domain reflection, and comprises the following steps: obtaining a linear sweep signal light based on a signal source; obtaining a first heterodyne signal through a measurement interferometer, and obtaining a second heterodyne signal through a reference interferometer; and processing the first heterodyne signal and the second heterodyne signal by using a time delay interference algorithm, so that direct compensation of laser phase noise is realized; and obtaining a strain signal based on the direct compensation of the laser phase noise. Through compensation of the laser phase noise, high-precision measurement of the strain signal can be realized at a distance far beyond the coherence length of the light source.

The application discloses a kind of based on retrieval enhancement cross-modal condition diffusion model emotion recognition method and system, the method receives text, speech, image multimodal data, detects modality integrity and extracts existing modal feature;If there is missing mode, based on existing modal feature in external sample library retrieval similar sample, weighted fusion generates retrieval enhancement representation;Cross-modal condition diffusion model is constructed, and missing modal feature is recovered by combining forward diffusion into information, reverse diffusion and iteration unified cross-modal attention mechanism;Splice complete modal feature, pass through Transform fusion network and joint loss function optimization, output emotion category and intensity.The application breaks through the limitation that existing generation model only relies on local information, fully utilizes the combination advantage of external retrieval and diffusion generation, can maintain stable performance under a variety of missing patterns, and has wide application prospect.

The invention relates to a cross coupling fractional order sliding mode control method for a variable pitch system of a wind driven generator, and belongs to the technical field of electro-hydraulic control. The method comprises the steps that the current wind speed of the variable-pitch system of the wind driven generator is determined, when the wind speed is larger than the cut-in wind speed and smaller than the rated wind speed, a controller sends a command to the variable-pitch system, the pitch angle is changed from 90 degrees to 0 degree, and the variable-pitch system starts to work; when the wind speed is larger than the rated wind speed and smaller than the cut-out wind speed, the optimal pitch angle is obtained according to the current wind speed, a controller sends a command to a variable pitch system, synchronous closed-loop adjustment is conducted on the pitch angles of the three blades, and meanwhile the controller is compensated based on the synchronous error among the three pitch angles; and when the wind speed is greater than the cut-out wind speed, the pitch angle is adjusted to 90 degrees, and the generator stops working. According to the method, unknown external disturbance and internal uncertainty in the electro-hydraulic variable pitch system of the wind driven generator can be accurately estimated, and meanwhile, the synchronization error between adjacent blades is compensated.

The invention relates to the technical field of intelligent decision and financial science and technology, and discloses an inter-frame data analysis method and device, equipment and a medium, and the method comprises the steps: obtaining all macro block information of each frame of image in a preset image set; performing identical extraction on macro block information in adjacent images in the preset image set to obtain identical macro block information; judging whether the preset frame image meets a preset condition or not, and if yes, performing corresponding condition operation; performing type analysis on macro block information which is the same as the same macro block information in the preset frame image to obtain a first macro block type; performing type analysis on macro block information different from the same macro block information in the preset frame image to obtain a second macro block type; and generating a compressed frame image according to the combination of the coded image, the first macro block type and the second macro block type. According to the invention, the motion estimation algorithm is optimized, the operation speed of the codec is accelerated, and the compression performance of the video is improved.

The application provides a gain compensation method, device, optical amplifier and storage medium, and belongs to the technical field of optical communication. The method is applied to an optical amplifier. In the method, after the power of input signal light changes, the power of pump light of the optical amplifier is adjusted based on power change information of the input signal light, the input signal light is amplified by using the pump light with the adjusted power, and the input signal light is gain compensated. In this way, the input signal light can be gain compensated only by detecting the power change information of the input signal light, the optical amplifier does not need to be in a full wave state for a long time, and therefore, the failure rate of the optical amplifier can be reduced.

The present invention relates to the field of photonic chip technology, and specifically provides a method and system for laser power compensation for optical waveguide processing based on simulation, including: constructing a simulation model based on actual architecture parameters, and simulating the light field distribution corresponding to the laser focus based on the simulation model; acquiring the focus light intensity data of different lateral offset distances based on the light field distribution, and normalizing the focus light intensity data of different lateral offset distances to obtain a light intensity distribution coefficient; setting the product of the inverse of the light intensity distribution coefficient and a preset change factor as a compensation coefficient for laser power; generating laser processing parameters based on the expected size of the optical waveguide; compensating the laser power in the laser processing parameters based on the compensation coefficient for the laser power to obtain an optical waveguide processing file. The present invention realizes accurate compensation for processing laser power, thereby avoiding shape defects of the optical waveguide caused by laser loss.

The application provides a sensor signal attenuation calibration method, device, equipment and storage medium, and relates to the technical field of computers.The method comprises the following steps: acquiring a real-time detection signal of a target sensor; determining a target feature value corresponding to the real-time detection signal under each first feature dimension in a feature dimension set; the first feature dimension is strongly related to the concentration of a to-be-measured object; inputting the target feature value under each first feature dimension into a concentration estimation model for concentration calibration processing to determine a calibrated concentration corresponding to the to-be-measured object; the concentration estimation model is obtained by pre-training according to multiple sample feature values under the first feature dimension and the concentration of a sample object corresponding to each sample feature value; each sample feature value and the concentration of each sample object are determined according to sample detection signals of sample sensors with different aging degrees under different working conditions. The technical scheme can improve the accuracy of the sensor detection signal.

The application relates to a pre-lithiation reagent and a preparation method, a lithium ion battery negative electrode and a preparation method, and a lithium ion battery, and belongs to the technical field of lithium ion batteries, and comprises the following steps: dispersing a lithium-silicon alloy, ammonium hexafluorozirconate and a hydrophobic polymer in a non-polar solvent, and performing in-situ reaction at 60-180 DEG C; then performing vacuum filtration on the system after reaction; and drying the solid-phase product obtained through the vacuum filtration to obtain the pre-lithiation reagent. The pre-lithiation reagent prepared by the application realizes fiberization of a main binder under stirring together with an active substance, a conductive agent and a double-binder system, and a high-load self-supporting thin film material prepared through dry rolling is used as a negative electrode sheet, precise and uniform compensation of active lithium is realized under the condition of no organic solvent, the prepared negative electrode sheet has excellent chemical stability in a room-temperature high-humidity environment, and has an outstanding industrial application prospect.

The invention belongs to the technical field of communication engineering, and relates to a digital pre-distortion and dispersion compensation method for a frequency hopping communication system, which comprises the following steps: generating S frequency mixing signals xs (n), s belongs to (1, S), respectively inputting the signals xs (n) into the frequency hopping communication system, and collecting a power amplifier forward signal zs (n), a power amplifier output signal mu s (n) and a system feedback signal vs (n) of the signals xs (n) in the frequency hopping communication system; calculating a group delay residual equalization signal rs (n) according to the signals vs (n) and mu s (n); performing time alignment on the signals rs (n) and zs (n) to obtain a time alignment signal rs' (n); estimating a predistortion coefficient according to the signals xs (n) and rs' (n), and updating the coefficient to a digital predistorter to obtain an updated frequency hopping communication system; inputting the frequency mixing signal into the updated frequency hopping communication system to obtain an output signal subjected to predistortion and dispersion compensation; according to the invention, mathematical modeling is carried out on the nonlinear behavior of the power amplifier under the excitation of the broadband signal with fast frequency hopping, and a method of combining digital pre-distortion and dispersion compensation is adopted, so that signal distortion caused by nonlinearity of the power amplifier can be accurately compensated, and the signal quality is improved.