19results about How to "Real-time correction" patented technology

The invention discloses a rocket engine thrust control method and system, and relates to the technical field of rocket engine control, and the method comprises the steps: obtaining a combustion chamber pressure fluctuation signal, a propellant supply state parameter and a target thrust demand, carrying out the time-frequency domain decomposition of the pressure fluctuation signal, and obtaining a dominant frequency and amplitude envelope; and calculating a combustion stability boundary value. The thrust demand change gradient is restrained based on the boundary value, a thrust adjusting track is generated, and the flow adjusting amount and the pressure difference adjusting amount are calculated. And establishing a time sequence cooperative relationship between flow regulation and pressure difference regulation, and analyzing the pressure distribution characteristics of the supply pipeline. And flow adjusting quantity correction is conducted through frequency difference value calculation, and finally the supply mechanism and the injection mechanism are driven to achieve thrust adjustment. According to the invention, the thrust adjusting precision and the system stability can be effectively improved.

The invention relates to the field of asphalt pavement construction, and discloses a surface layer asphalt concrete construction quality management method and a quality monitoring system, and the method comprises the following steps: S1, dividing a road surface layer to be constructed into a plurality of road section units; s2, acquiring the data as a first process parameter in real time through a mixing station data acquisition terminal; s3, acquiring a second process parameter through the transport vehicle data acquisition terminal; s4, continuously acquiring the parameters as third process parameters through the paver data acquisition terminal; s5, continuously acquiring the parameters as fourth process parameters through the road roller data acquisition terminal; and S6, the data processing server constructs a corresponding road section unit data set according to each parameter, generates early warning information including an abnormal type and suggested adjustment measures, and feeds back the early warning information to an equipment terminal of a corresponding construction process. According to the invention, discrete sampling inspection type quality management after traditional construction is completed can be converted into visual, controllable and traceable management in the construction process.

The application relates to the technical field of steel rolling, and particularly discloses a production method of high-strength automobile beam steel 800L-AC steel, which reconfigures alloy element components; the billet is heated; the heating temperature of a heating furnace, total furnace time and soaking section residence time are controlled; rolling parameters are set, including the finish rolling inlet temperature, the final rolling temperature, the coiling temperature and the cooling strategy of the billet, the rough rolling scale removal pass and the load distribution of the finish rolling mill are controlled; the work roll bending force and the roll shifting amount are automatically adjusted according to the plate shape defect type, and the plate shape defect is corrected in real time; the load distribution technology is adopted to control the rolling force deviation of each rack within + / -8%, so that the excessive bending of the roll system caused by local overload is avoided, and the plate shape defect is reduced from the source; the work roll bending force and the roll shifting amount are automatically adjusted according to the plate shape defect type (edge wave and middle wave), the real-time correction of the plate shape defect is realized, the plate shape qualified rate is improved, and the strength and toughness of the steel are significantly improved.

This invention discloses a collaborative control method and system for human-robot collaborative assembly robots based on digital twins. The method first constructs a digital twin simulation environment in the Unity engine to map the physical collaborative assembly scene to the virtual scene. Multimodal sensing technology is used to collect real-time data on human actions and the state of the assembled workpiece, introducing virtual-real mapping to achieve intent recognition. Then, based on reinforcement learning algorithms, path planning is performed on the collaborative robot in the digital twin environment to generate an optimal collaborative path sequence. Finally, the planned path is mapped to the real robot control commands through coordinate transformation and inverse kinematics algorithms, and an online adaptive strategy is used to dynamically optimize the motion trajectory. By combining digital twins and reinforcement learning, this invention improves the intelligence and flexible scheduling capabilities of the human-robot collaborative assembly system, enhances the system's rapid adaptability to unstructured changes and assembly accuracy, and overcomes the problems of cumbersome task programming and poor adaptability in traditional methods.

The invention discloses a reinforced concrete synchronous 3D printing lining device and method for a TBM, and belongs to the field of additive manufacturing. Comprising a construction rail car, a laser radar, a concrete 3D printing module, a steel bar laser printing module and a control module. The control module constructs a lining three-dimensional model according to tunnel morphology data scanned by the laser radar, extracts a main stress trace through finite element analysis, and generates a steel bar arrangement path and a concrete printing track with stress steering as a principle; the steel bar laser printing module and the concrete 3D printing module synchronously print along the path and the track respectively, and the steel bar layer is controlled to be higher than the concrete layer; and the laser power and the wire feeding speed of the steel bar laser printing module are dynamically adjusted based on monitoring information obtained by the thermodynamic camera, and the temperature fluctuation is controlled within the preset deviation. The system can realize synchronous additive forming of reinforced concrete in a TBM construction environment, and has the characteristics of high automation, high construction flexibility and capability of monitoring the whole process.

The invention discloses an excavator overwater operation visual guidance system and a control method, and belongs to the technical field of engineering machinery intelligent control, the system comprises an overwater environment perception fusion module, a bucket underwater pose resolving module, a dynamic operation plane generation module and a visual guidance control module, the overwater environment perception fusion module dynamically calculates self-adaptive confidence weights of the GNSS, the inertial measurement and the water pressure sensor according to the overwater environment characteristics to perform weighted fusion; the bucket underwater pose resolving module adopts an extended Kalman filter to carry out pressure-depth combined state estimation; the dynamic working plane generation module adopts a moving least square method to fit a working target plane in real time; the visual guidance control module calculates deviation and generates a three-dimensional visual interface, and meanwhile deviation feedback is used for closed-loop correction, the technical problems that in the water operation environment, the positioning precision is unstable, and the underwater depth measurement precision is insufficient are solved, and high-precision visual guidance of the water excavator is achieved.

The application provides a deviation rectifying device of a sewing machine and the sewing machine, and belongs to the technical field of sewing equipment. The deviation rectifying device comprises a controller and a rack. The rack is provided with a connecting rod mechanism and a sensor for detecting whether the fabric edge deviates. The connecting rod mechanism is provided with a roller. The rack is further provided with a driving mechanism one for driving the connecting rod mechanism to swing and a driving mechanism two for driving the roller to rotate. The driving mechanism one and the sensor are electrically connected with the controller respectively. The deviation rectifying device can automatically detect whether the fabric deviates and rectify the deviation in real time. The deviation rectifying device has high automation degree, is convenient to operate and has high deviation rectifying speed.

The utility model relates to a liquid injection amount adjusting device and a battery liquid injection amount correcting device. The injection amount adjustment device (100) includes: a servo adjustment mechanism (25); the liquid injection pump (30) is electrically connected with the servo adjusting mechanism (25); a weighing meter (50); an analog input / output module (70); the analog quantity input and output module (70) is used for receiving a liquid injection quantity measurement value from the metering and weighing instrument (50) and converting the measurement value into electric signal information; the PLC control module (80) is configured to receive the electric signal information from the analog input / output module (70) and compare the electric signal information with a set target value to generate a control instruction, and the servo adjustment mechanism (25) is configured to receive the control instruction from the PLC control module (80) and adjust the liquid injection amount of the liquid injection pump (30).

This invention discloses a water level error correction system and method for steam generators, belonging to the field of industrial measurement and control. The system includes a differential pressure sensor with a Wheatstone bridge as its core, a precision resistor connected in series in its power supply circuit, and a multi-channel signal acquisition and processing unit. The method simultaneously acquires the output voltages of the two channels of the bridge and the voltage of the precision resistor, first calculating the sensor chip temperature; then constructing two characteristic quantities—voltage and voltage difference—and intelligently judging the system operating condition based on their changes; finally, adaptively calling a pre-stored compensation model according to the operating condition, calculating the system static pressure, and performing comprehensive dynamic correction of the original differential pressure for static pressure error and temperature drift, thereby calculating the accurate water level. This invention eliminates the need for additional sensors, achieving real-time compensation for the inherent error of the differential pressure sensor under all operating conditions solely through innovative signal fusion and adaptive algorithms, significantly improving the accuracy and stability of water level measurement, while also being low in cost and simple in structure.

This invention relates to a dynamic digital zoom and X-ray beam center positioning method in an X-ray device. The X-ray device includes a vision acquisition module, a depth sensing module, an X-ray emission module, an image receiving module, and a control module. First, a mapping relationship between the X-ray beam propagation path and the visual coordinate system is established through geometric calibration. Then, RGB color video streams and three-dimensional depth data of the area to be photographed are simultaneously acquired. An artificial intelligence model, combined with domain-specific rules, is used to identify the exposure area and determine the theoretical center of the X-ray beam. Based on the mapping relationship and the three-dimensional depth data, the SID value is calculated to estimate the actual center of the X-ray beam and obtain the offset. According to the offset, digital zoom processing or an automatic collimation mechanism is used to align the center of the RGB color video stream with the center of the X-ray beam. The correction result is output in real time, dynamically responding to changes in the shooting state. This invention solves the problem of X-ray beam offset under different shooting conditions through multi-source data fusion and dynamic correction, improving the positioning accuracy of the exposure area.

The invention relates to the technical field of automatic laminating equipment, and discloses a hydrogen energy automatic laminating machine which comprises a rack, and a plurality of stock bin units are integrally arranged on the rack; the stock bin unit comprises a protective film stock bin, a partition plate stock bin, a catalyst layer stock bin, a laminating bin, a finished product stock bin and a concentric-square-shaped frame stock bin; a first linear motor module is arranged on the upper surface of the top end of the rack, a catalyst layer adsorption manipulator is arranged on the first linear motor module, a second linear motor module is arranged on the lower surface of the top end of the rack, and a concentric-square-shaped frame adsorption manipulator is arranged on the second linear motor module. A third linear motor module is arranged on the lower surface of the opposite top end of the rack; through cooperation of all the units, high-precision and high-efficiency automatic attachment of all assemblies of the hydrogen energy membrane electrode is achieved, and the automatic attachment device is suitable for a large-scale membrane electrode production scene.

This invention discloses a thermal insulation and corrosion-resistant insulated pipe bypass device and method, belonging to the technical field of adhesion control and bypass path planning for pipeline traveling devices. It includes: S1, a ring-shaped frame, a sensing arm, a first drive wheel system, a first clamping mechanism, a three-dimensional sensor, an inertial measurement unit, a sensing wheel, a high-resolution encoder, a first torque meter, a second torque meter, and a controller. The sensing arm is connected to the front end of the ring-shaped frame in the traveling direction via a flexible hinge. The first drive wheel system, the first clamping mechanism, the three-dimensional sensor, and the inertial measurement unit are mounted on the ring-shaped frame. The first torque meter is integrated into the output shaft of the first drive wheel system. This invention's forward-looking adhesion feedforward control allows the device to anticipate sudden changes in friction on the pipe surface, overcoming the slippage problem that is difficult to avoid with traditional methods relying on hysteresis slip rate feedback, and improving the device's stable adhesion capability on sudden low-friction pipe surfaces.

This utility model discloses a rear-mounted, retractable slurry pipe jacking machine, comprising a cutterhead, a shield, a slurry balancing mechanism, and a power unit. The cutterhead is located at the front end of the shield. The power unit includes a power shaft and a drive mechanism. The drive mechanism is located at the rear of the shield. The power shaft is located within the shield, with its front end connected to the cutterhead and its rear end connected to the drive mechanism. The slurry balancing mechanism is mounted on the power shaft and located within the shield. This utility model externalizes the power unit by placing it at the rear of the device and transmitting power through the power shaft. Because external power is not limited by space, and the transmission path of the power shaft can bear greater power and torque, the overall operating power of the cutterhead is increased by more than two times, making the cutterhead suitable for various complex geological formations.

The invention provides an airflow interference pipeline acoustic measurement correction method and device, and relates to the technical field of acoustic measurement correction, and the method comprises the steps: obtaining acoustic measurement values of a measurement pipeline under different parameter combinations, and constructing an initial data set; the initial data set is preprocessed, airflow parameters are extracted from the preprocessed data set to serve as input features, corresponding acoustic measurement deviation values serve as output labels, and a structured data set is constructed; key parameters of the RBF-BP mixed model are optimized through a sparrow search algorithm, an initial deviation prediction model is obtained, the initial deviation prediction model is trained through the structured data set, and a target deviation prediction model is obtained; inputting the current measurement airflow parameter into the target deviation prediction model to obtain an airflow interference prediction value; and inputting the current acoustic measured value and the airflow interference predicted value into a preset correction model to obtain corrected acoustic performance parameters. By means of the method, correction of the acoustic measurement data of the pipeline can be achieved.

The invention relates to the technical field of precision mold design and manufacturing, and discloses a precision mold collaborative design implementation method based on parametric modeling, which comprises the following steps: step 1, acquiring target parameters; step 2, establishing a multi-physics field coupling simulation platform to carry out thermal coupling analysis; 3, performing multi-objective optimization by adopting an improved genetic algorithm, dynamically adjusting a target parameter space and generating an optimal solution; 4, the optimal solution is input for mold manufacturing, a real-time compensation mechanism is triggered based on online monitoring data in the mold manufacturing process, and the mold profile is corrected in real time; the steps 2, 3 and 4 are set, thermal coupling analysis is carried out by establishing a multi-physics field coupling simulation platform, the problems of weak coupling and low precision of traditional simulation are solved, and high-fidelity field quantity data are provided for optimization; meanwhile, a material updating mechanism is introduced, nonlinear changes of material parameters are accurately captured, the prediction precision of a temperature field and a stress field is improved, and therefore a high-confidence-coefficient basis is provided for mold design.

This application relates to a display method, apparatus, and computer device. It involves acquiring an eye image of a user and extracting the user's biometric parameters from the image; obtaining the user's environmental depth information and current inertial measurement data, and determining the user's wearing posture parameters based on these data; inputting the biometric parameters and posture parameters into a preset optical distortion mapping model to determine the distortion compensation amount for correcting the user's vision in the current posture; correcting image frames in the original rendered image based on the distortion compensation amount to obtain the target display image, and then outputting the target display image to the display module of the target display device for display. This solves the dynamic adaptation problem, enables real-time correction of the display image, reduces optical distortion, and improves the user experience.

The application discloses a kind of intelligent computing center energy storage control method, device, system and storage medium, belong to intelligent computing center power supply and distribution technical field, the method includes: obtaining the multi-source data of intelligent computing center, including electrical quantity data and GPU task scheduling data;Multi-source data is input to first time series prediction model, obtain the load fluctuation prediction result of future millisecond level period, including predicted load fluctuation time, load fluctuation amplitude and fluctuation direction;Based on fluctuation amplitude and direction, reverse pre-charging and discharging operation is carried out to energy storage unit within the preset length of time before fluctuation occurs;After fluctuation occurs, feedback correction amount is generated according to the deviation of actual load power and predicted load value;Feedback correction amount and feedforward power control amount are superimposed to generate composite control amount, control the charging and discharging power of energy storage unit.The technical problem that related art is poor in fluctuation suppression effect due to the delay of response, lack of prediction ability is solved.

This invention provides a real-time correction method for endoscopic image distortion, comprising: placing an improved rigid endoscope system at a target position and setting operating conditions; in each frame of the image of the biological tissue acquired by the endoscope, firstly performing laser gating projection correction, and calculating a homogeneous transformation matrix between the projection distortion correction line image and the correction line reference image; then, acquiring the current endoscopic distortion image acquired by the CCD camera again, processing it using the homogeneous transformation matrix to obtain the endoscopic corrected image, and displaying the corrected image on a monitor for human observation, thus eliminating the distortion. Because the period of the pulsed laser projecting the correction line reference image is extremely short, much shorter than the human eye's visual persistence period, the observer will not perceive the laser gating projection correction process, ensuring the dynamic and real-time nature of image correction; moreover, the instantaneous exposure of the weak laser will not damage biological tissue, ensuring the medical safety of image correction.

The utility model relates to a detection device, in particular to a paperboard printing bar code deviation automatic detection device which comprises a main body, a visual detection piece arranged on the main body and a conveying piece arranged on the main body. The deviation rectifying structure comprises a centering piece which is installed on the main body and matched with the conveying piece. According to the paperboard detection device, the main body is provided with the deviation correcting structure which is tightly matched with the conveying piece, so that the detection problem caused by vibration, deflection or position deviation in the paperboard conveying process can be effectively solved, and the detection accuracy is improved due to tight matching of the centering piece and the conveying piece and transmission connection of a third gear; by means of the technical scheme, the paperboard can be always kept at a stable position and posture in the conveying process, so that detection errors caused by skewing or deviation of the paperboard are effectively avoided, the accuracy and reliability of barcode detection are improved, it is ensured that the printing quality of barcodes meets the standard, and the situation that subsequent recognition is affected by the problems such as deviation, fuzziness or wrong characters of the barcodes is avoided.