18 results about "Distortion control" patented technology

The invention provides a flexible welding deformation control method and an obtained bogie framework, specifically, a deformation monitoring sensor used for collecting workpiece deformation and a force sensor used for collecting clamping force are installed on a workpiece clamp; the deformation monitoring sensor and the force sensor are connected with the data acquisition control module; the method comprises the following steps: pre-installing a workpiece on a clamp, and establishing a mapping relation among the workpiece, the clamp and each sensor in the clamp; according to historical welding data of the same type of structure, presetting reversible deformation parameters, collecting pre-welding reference data, verifying data of each sensor, and if reversible deformation is effective, entering a welding process monitoring state; welding machine signals and sensor data are collected in real time, the deformation state is processed and analyzed in real time, and adjustment suggestions are output; and after welding is completed, the deformation trend of the workpiece after loosening and clamping is judged in combination with sensor data, deformation data of the workpiece after loosening and clamping are collected, whether the deformation data are qualified or not is judged, and if not, adjustment and repair are conducted till the deformation data are qualified.

Synthesizing a high resolution input for rendering a digital person includes generating a distorted image with a generative artificial intelligence (AI) model by enhancing a region of interest (ROI) within the distorted image relative to other regions of the distorted image of the digital person. The generative AI model is previously trained for a distortion control image generated by distortion of a control image using a distortion function, which is used to guide image generation of the generative AI model. The distortion control image is generated by reconfiguring and supplementing pixels of the control image. A distortionless image of a digital human is generated using an inverse distortion function to inversely distort the distortion of the image.

The application discloses a protection and distortion control method and system during sound operation, and relates to the technical field of audio processing. An audio signal and a reference signal are acquired; the reference signal is preprocessed to obtain a trigger signal of a level effective value; a trigger threshold is acquired according to the trigger signal of the level effective value; the trigger threshold is adjusted to obtain a preset trigger threshold; the preset trigger threshold is dynamically adjusted according to a voltage value corresponding to a frequency of the audio signal to obtain a voltage value corresponding to the preset trigger threshold; and the audio frequency corresponding to the voltage value corresponding to the preset trigger threshold is a protected and distortion-controlled audio signal. The application realizes dynamic change of a high-frequency cutoff frequency of an audio high-frequency unit while maintaining the loudness of a sound field restoration of a sound system, and improves the protection and distortion control accuracy of the sound in a limit operation state of high power and long time.

The invention provides a single-input digital pre-distortion design method, medium and system for an impedance mismatch power amplifier, and the method comprises the steps: obtaining a plurality of output signals and a double-input memory polynomial model of the power amplifier in a complex impedance mismatch environment, and enabling the output signals and input signals to form a data set; introducing a neural network model into the double-input memory polynomial model to obtain a single-input fusion model; and training the single-input fusion model by using each output signal in the data set so that the single-input fusion model learns towards the direction of the input signal to obtain solved overall model parameters and internal parameters, and then performing pre-distortion control. According to the invention, the single directional coupler is used for collecting the output signal for solving the unknown parameter, and then the single-input fusion model containing the known parameter is used for predistortion control, so that the hardware overhead can be reduced, and the control effect is improved as the output signal is most accurate.

The application discloses a kind of self-adapting segmented gain multi-wavelength laser ranging method and system, method includes: multi-wavelength laser is under the control of trigger signal, laser pulse is emitted by emission optical system, trigger mode has synchronization, equal interval and coded emission.Laser echo is guided to detector by receiving system, and digital signal is generated after conversion by segmented gain module.Control processing module includes the information of ranging value, echo intensity in signal processing calculation.By self-adapting segmented gain, low magnification gain circuit is used to suppress strong signal in short distance, high magnification gain circuit is switched to improve weak signal detection ability in long distance, and step gain is formed by gain partition, and segmented area is adaptively adjusted to avoid distortion according to echo ranging value.Control processing module will complete data transmission.Near distance signal distortion and long distance signal missing detection are avoided, and system reliability and detection ability are improved.

The utility model aims to solve the problems of complex process, high cost and unstable distortion control effect in the heat treatment process of a gear shaft in the prior art, and provides a heat-resistant tool for heat treatment of a duplicate gear shaft. The two partition plates are arranged on the upper end wall and the lower end wall of the rectangular frame in a central symmetry mode respectively, and the two partition plates are fixedly connected through a connecting plate and are parallel to the long side wall of the rectangular frame. One group of fixing plates is vertically connected between one partition plate and one longer side wall of the rectangular frame, and the other group of fixing plates is vertically connected between the other partition plate and the other longer side wall of the rectangular frame; a gap is formed between the two fixing plates included in each group of fixing plates, a first arc-shaped clamping groove is formed in the upper edge of one longer side wall of the rectangular frame located between the gaps, and a second arc-shaped clamping groove corresponding to the first arc-shaped clamping groove is formed in the upper edge of the other longer side wall of the rectangular frame located between the gaps; supporting structures are arranged at the two ends of the two long side walls in the rectangular frame.

The invention relates to the technical field of radio frequency circuits and quantum sensing, and discloses an NV color center-oriented hybrid neural network adaptive pre-distortion system and method, a storage medium and electronic equipment, and the system comprises a main signal path, a feedback observation path and a hybrid neural network pre-distortion controller; a digital predistorter in the main signal channel receives an original digital signal, predistorts the original digital signal to generate a predistorted signal, and outputs an amplified signal after the predistorted signal passes through a power amplifier; a coupler of the feedback observation path receives an amplified signal, and the amplified signal passes through an attenuator and an analog-to-digital converter and then outputs a digital feedback signal; and the hybrid neural network predistortion controller receives the original digital signal and a digital feedback signal output by the analog-to-digital converter, outputs a calibration signal required by the digital predistorter through a neural network model based on the original digital signal and the digital feedback signal, and controls the digital predistorter based on the calibration signal.

The stellite surfacing part deformation control clamp is applied to the field of clamps and comprises a fixing frame and a clamping mechanism, the top of the fixing frame is provided with two fixing plates, the tops of the fixing plates are connected with threaded rods in a penetrating and threaded mode, the bottom ends of the threaded rods are provided with control blocks, and the control blocks are connected with the clamping mechanism. Guide rods are symmetrically welded to the top of the control block, a shell is arranged on one side of the fixing frame, a rotating shaft welded to the fixing frame is rotatably connected to the interior of the shell, the surface of the rotating shaft is fixedly sleeved with a gear, and a limiting plate is clamped to the top of the gear; and a limiting spring is bolted between the top of the limiting plate and the shell through a spring fixing sheet. The control effect on the part can be improved, the side edge of the part is prevented from tilting upwards due to heating, the quality of the part after surfacing is guaranteed, practicability is high, meanwhile, the welding position adjusting function can be achieved, operation is easy and convenient, the working efficiency of workers is improved, and flexibility is good.

The invention provides a lens curvature adaptive optimization design method and system for edge field-of-view correction, and relates to the technical field of optical lens design, and the method comprises the steps: obtaining an initial parameter; performing global optimization to obtain a first optimized structure; calculating an effective aberration factor of the first optimization structure in the edge view field; according to a comparison result of the factor and a threshold value, adaptively determining a lens surface area and intensity which need to be finely adjusted, and calculating the field distortion of the area; and performing local curvature optimization on the determined area by taking minimization of the distortion degree of the field of view and suppression of the effective aberration factor within the tolerance as constraints, and generating and outputting a second optimization structure. The system comprises a parameter input module, a global optimization module, an efficiency evaluation module, a decision module, a local optimization module and an output module, wherein the efficiency evaluation module, the decision module and the local optimization module form closed-loop feedback. According to the method, edge aberration correction and distortion control are collaboratively optimized through quantitative evaluation and adaptive decision, and the design efficiency and the system environment robustness are improved.

The invention discloses a power load prediction processing method and device and electronic equipment. The method comprises the following steps: determining a credible anchor point group based on an extreme dynamic fragment of a target area in a target time period; under the constraint of the credible anchor point group, disturbance processing is carried out on the feature data corresponding to the adjacent sub-regions of the target region, a distortion control boundary is determined, and the distortion control boundary is obtained based on a distortion propagation path and an amplification critical point of distortion features among the multiple sub-regions; generating region calibration priori data based on the distortion control boundary; and performing correction processing on the power load prediction results corresponding to the plurality of sub-regions based on the region calibration prior data to obtain corrected power load prediction results corresponding to the plurality of sub-regions. According to the invention, the technical problem of distortion characteristic propagation and amplification during multi-region distributed load prediction in a power system in the prior art is solved.

This utility model relates to a cavity-based anti-leakage structure for a loudspeaker cable passage, comprising a loudspeaker driver, a panel, and a rear shell. The loudspeaker driver is disposed inside the panel. The panel also has a cavity, through which the connecting wire of the loudspeaker driver passes. A circular hole is provided on the rear shell corresponding to the cavity. The rear shell and panel are ultrasonically sealed after the circular hole aligns with the cavity, and the circular hole contains sealing adhesive. This utility model uses ultrasonic welding to completely eliminate the risk of air leakage at the joint surface of the partition; external adhesive injection directly seals the wire perforation, eliminating the air leakage channel; and the adhesive injection location is exposed, allowing direct visual inspection of the adhesive filling state, avoiding hidden defects; at the same time, precise external adhesive injection significantly reduces the amount of adhesive used, eliminating the internal adhesive application process and simplifying the assembly process; thus significantly improving the airtightness of the cavity, ensuring that low-frequency response and distortion control meet acoustic design requirements.

The application belongs to the technical field of magnetoelectric antenna control, and particularly relates to a long-wave antenna radiation characteristic measurement system based on power amplification, which comprises a reference characteristic parameter acquisition module, a rate correlation dynamic inverse model construction module, an adaptive weight updating module and a closed-loop driving and radiation correction module. A reference signal is output by a power amplifier, and a normalization coefficient and a reference change rate constant are obtained. A rate correlation correction factor is constructed based on the instantaneous change rate of an expected input voltage signal, and a pre-distortion control signal is generated in combination with a hysteresis operator. The total number of loop delay points is determined, the instantaneous error and the gradient vector after time alignment are calculated, the weight of the hysteresis operator is updated by using an energy normalization algorithm, and the pre-distortion control signal is input into the power amplifier to drive the magnetoelectric antenna. The application solves the problems of dynamic hysteresis distortion and thermal drift of the magnetoelectric antenna under high-frequency driving, and significantly improves the quality and stability of the radiation waveform.

The invention discloses a large-length-diameter-ratio gear shaft carburizing and quenching distortion control method which comprises a racking mode for controlling a gear shaft part during carburizing and quenching and a heating mode during carburizing and quenching, and the racking mode comprises the following steps: before carburizing, coating an anti-seepage coating on a carbon layer turning part of a gear shaft, then the gear shaft is installed around the tool frame and then carburizing treatment is carried out; after carburizing, the convex surfaces of all the gear shafts face the tool, and then the gear shafts are fixed to a tool frame to be subjected to quenching treatment; the temperature rising mode comprises the step type temperature rising process adopted in the carburizing process and the quenching process. The method has the advantages that according to the analyzed deformation reason of the gear shaft part with the large length-diameter ratio in the heat treatment process and the deformation rule in the heating or cooling process, all-directional control is conducted in the aspects of racking of the gear shaft part and temperature rising in the carburizing and quenching process, the deformation amount of the gear shaft is greatly reduced, the yield of the gear shaft is increased, and the production cost is reduced. And the production cost of the gear shaft with the large length-diameter ratio is reduced.

The invention discloses a carburizing and quenching distortion control method for a bevel gear of an automobile transmission, and belongs to the technical field of heat treatment. The method sequentially comprises the following steps: pre-oxidation treatment: preserving heat at 450 DEG C to form a catalytic oxidation film on the surface of the bevel gear; carburizing treatment: carburizing at 915 + / -5 DEG C after two-stage preheating; quenching treatment is conducted, specifically, cooling is conducted in quenching oil at the temperature of 830 + / -5 DEG C, and the delay time from furnace discharging to oil feeding is controlled not to exceed 30 seconds; cryogenic treatment and tempering treatment are conducted, specifically, after quenching, the workpiece is subjected to cryogenic treatment and then subjected to tempering treatment in the same equipment. Through the synergistic effect of the pre-oxidation, the optimized carburizing and quenching parameters and the cryogenic tempering integrated process, the quenching distortion problem caused by the uneven section of the bevel gear is effectively solved, the maximum tooth shape deformation is smaller than or equal to 0.02 mm, meanwhile, the surface hardness of 60-63 HRC, the carburizing layer depth of 0.8-1.0 mm and the high bending fatigue strength are guaranteed, and the service life of the bevel gear is prolonged. And the product precision and the performance consistency are obviously improved.

The invention discloses a discrete current type control method and device for totem-pole bridgeless PFC, and is suitable for the field of electric energy conversion and control and the field of switching converter control and modulation. According to the device, the unity power factor of the input side of the converter and the fast transient response control target can be achieved; according to the control method provided by the invention, a proportional-integral controller, an error amplifier and a compensation network thereof are not needed in a voltage control loop, the controller is simple in design and low in software cost, and a fast transient response control target can be realized; besides, according to the control method provided by the invention, the input current reference of the current control loop is obtained by an input current reference calculation module and is not interfered by double power frequency ripples of the output voltage, and decoupling of the voltage loop and the current loop is realized, so that a low input current distortion control target can be realized, and the control method has certain academic and engineering application values.

A method for compensating for quality variation in an imager capturing microscope images or sequencing images associated with a tissue is disclosed. A plurality of images of an optical target, captured by an imager, the optical target including a distortion control region formed of a plurality of patterned fiducial regions each defining a different area of the distortion control region, the plurality of images including an image of each different area of the distortion control region, are provided. One or more of the images of the different areas of the distortion control region are fed to a distortion correction process configured to perform a distortion correction based on locations of one or more of the patterned fiducial regions, and profile data is generated for the imager, the profile data comprising the distortion correction data from the distortion correction process. The quality variation profile data is then stored for use in correcting subsequent microscope images or subsequent sequencing images received from the imager. An optical target is also disclosed. The optical target includes a metal patterned substrate having a blank region, a focusing zone region comprising a plurality of focusing features, and a distortion control region formed of a plurality of patterned fiducial regions each defining a different area of the distortion control region.

The invention belongs to the technical field of magnetoelectric antenna control, and particularly relates to a long-wave antenna radiation characteristic measurement system based on power amplification, which comprises a reference characteristic parameter acquisition module, a rate-dependent dynamic inverse model construction module, a self-adaptive weight updating module and a closed-loop driving and radiation correction module. Controlling the power amplifier to output a reference signal, and obtaining a normalization coefficient and a reference change rate constant; establishing a rate-related correction factor based on the instantaneous change rate of the expected input voltage signal, and generating a pre-distortion control signal in combination with a hysteresis operator; measuring the total delay point number of the loop, calculating an instantaneous error and a gradient vector after time alignment, and updating the weight of a hysteresis operator by using an energy normalization algorithm; the pre-distortion control signal is input to a power amplifier to drive a magnetoelectric antenna. The problems of dynamic hysteresis distortion and thermal drift of the magnetoelectric antenna under high-frequency driving are solved, and the quality and stability of radiation waveforms are remarkably improved.

The application relates to a reverse distortion calibration method, wherein the method comprises the following steps: drawing a grid chart on a display screen, and obtaining a distortion image by shooting the grid chart through a calibration camera, wherein the calibration camera is arranged at an exit pupil position of a head-mounted device; based on a preset rule, a plurality of original distortion control points are extracted from the distortion image, and the original distortion control points are converted into an optical machine distortion control point in a display coordinate system; a curved surface fitting is performed according to the plurality of optical machine distortion control points, a reverse distortion curved surface Mesh is obtained, a to-be-rendered texture chart is attached to the reverse distortion curved surface Mesh through a shader, and a reverse distortion chart is generated. Through the application, the problems of complex steps and poor efficiency of the reverse distortion calibration method in the related art are solved, and the reverse distortion calibration of an off-axis large-curvature optical system with asymmetrically distributed distortion is realized without manual operation.