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56 results about "Observation unit" patented technology

A data point or observation is a set of one or more measurements on a single member of unit of observation. For example, in a study of the determinants of money demand with the unit of observation being the individual, a data point might be the values of income, wealth, age of individual, and number of dependents.

Multifunctional experimental platform and system for flow state observation and pressure test of fire extinguishing agent

The invention relates to the technical field of fire protection engineering, and discloses a multifunctional experiment platform for fire extinguishing agent flow state observation and pressure testing, the multifunctional experiment platform comprises at least one liquid storage pressurization unit, a multi-section experiment pipeline unit, a flow state observation unit and a data acquisition and control device, the multi-section experiment pipeline unit comprises a nozzle and a test experiment pipe; the flow state observation unit comprises a transparent closed box body and a closed observation cavity; wherein the test experiment pipe comprises a straight pipe experiment section and / or a bent pipe experiment section and / or a reducing experiment section, the straight pipe experiment section comprises at least two straight pipes, the bent pipe experiment section comprises at least one bent pipe, and the reducing experiment section comprises at least two reducing pipes. According to the multifunctional experiment platform, the vertical layout conforms to the natural flow direction of fluid, the structure is stable, the test experiment pipe is modularly designed, the test is flexible and efficient, the whole system is visible, controllable and high in recordability, and the experiment efficiency and safety are greatly improved.
Owner:CHINA UNIV OF MINING & TECH

Darkroom phase calibration method and device for synthetic aperture radiometer

The invention discloses a synthetic aperture radiometer darkroom phase calibration method and device. The method comprises the following steps: installing a synthetic aperture radiometer and a point target emission source in a microwave anechoic chamber; in the first-stage test, unit antenna output ports are connected with equal-length test cables and connected to a microwave test instrument, a synthetic aperture radiometer is set to be in an antenna observation mode, and a point target observation unit antenna phase difference test is carried out; in the second-stage test, the output end of the unit antenna is connected with each receiving channel of the synthetic aperture radiometer, the synthetic aperture radiometer is set to be in an antenna observation mode, and a point target observation full-system phase difference test is carried out; in the third stage of testing, the synthetic aperture radiometer is set to be in a common noise injection calibration mode, and common noise injection calibration is carried out; and calculating and counteracting a near field effect phase difference, a unit antenna phase difference and a receiver channel phase difference to obtain an accurate noise distribution network phase difference parameter. Darkroom phase calibration is achieved under the near-field condition, the result is accurate, and the method is simple, convenient and practical.
Owner:NAT SPACE SCI CENT CAS

A deep-sea benthic observation device based on dissolved oxygen compensation using two-way concentration gradient gas exchange.

This invention proposes a deep-sea seabed observation device based on bidirectional concentration gradient gas exchange for dissolved oxygen compensation, belonging to the field of deep-sea exploration and marine instrumentation technology. It solves the problems of existing deep-sea seabed in-situ observation devices, such as the inability to achieve low-disturbance dissolved oxygen compensation and carbon dioxide removal during long-term closed observations, and the difficulty in adapting to extreme high pressures in the deep sea to achieve pressure stabilization, leading to deterioration of the observation environment, data distortion, and insufficient equipment reliability. It includes an observation unit, a power and chemistry unit, and a fixed lifting system. The observation unit comprises an observation cabin, a membrane module installed on the bottom of the observation cabin's hatch, and a circulation hose connected to the membrane module. The membrane module includes a membrane module frame and a PTFE tube fixed to the membrane module frame in a spiral configuration. The PTFE tube is a microporous hose that enables bidirectional concentration gradient gas exchange. The power and chemistry unit is installed at the front panel of the observation cabin via a power and chemistry unit mounting component. It is mainly used for deep-sea seabed observation.
Owner:HARBIN ENG UNIV +1

Dynamic weighted fusion system and method based on real-time error covariance closed-loop feedback

This invention provides a dynamic weighted fusion system and method based on real-time error covariance closed-loop feedback. Addressing the contradiction between underlying physical coupling interference and the need for high-bandwidth dynamic response in non-stationary random environments for large-scale arrays, this invention utilizes a first-order Markov model to quantify the statistical coherence strength of individual observation units. Secondly, it implements physical-layer regularization constraints, eliminating bus capacitance interference and geometric phase deviation through a slope-constrained driving strategy and spatial consistency mapping. In high-frequency sampling environments of 208Hz and above, combined with transient discrimination logic based on full-axis spatial correlation, an analytical solution from a Lagrange optimized functional is used to establish a negative correlation mapping function between weight allocation and the real-time posterior error covariance trace, achieving dynamic gain suppression for non-stationary observation units. This invention achieves optimal fusion of large-scale redundant information while ensuring high-bandwidth real-time response, significantly improving the system's measurement accuracy and robustness.
Owner:WUYI UNIV

Water conservancy facility operation state monitoring system based on digital twinning

The invention relates to the technical field of water conservancy project automation control, and discloses a water conservancy facility operation state monitoring system based on digital twinning, and the system comprises a data collection unit which is used for collecting a basic control instruction and an actual measurement state response of an execution mechanism in real time; the generalized impedance observation unit is used for calculating the state deviation between the actually measured state response and the theoretical reference trajectory and mapping the state deviation into an equivalent disturbance quantity; the track time base modulation unit is used for establishing a load-time base association rule of the equivalent disturbance quantity and the time scaling factor; the nominal model simulation unit is used for generating a theoretical reference trajectory under the constraint of a time scaling factor, the generation rate of the theoretical reference trajectory is actively reduced through a load time base association rule when it is detected that the system resistance is increased, and the safety space of an execution mechanism is replaced by time; and the contradiction between the execution capability decline of the aged water conservancy facility and the rigid control target is solved.
Owner:HE NAN KAI QI ZHI NENG KE JI YOU XIAN GONG SI

Information providing device and information providing method

To support elimination of a gap in awareness and recognition among participants who engage with information in a situation where the information is provided in real time. An information providing device has a configuration including: a communication device configured to perform data communication with another apparatus; and an arithmetic device configured to execute processing of acquiring, from an observation unit configured to observe a situation in which information is explained by a provider of the information, information regarding an explanation position of the provider in the information, processing of acquiring, from a gaze analysis unit configured to estimate a gaze direction of a receiver who receives the explanation of the information, information regarding a gaze position of the receiver, and processing of specifying and outputting an information exchange gap between the provider and the receiver based on the information regarding each of the explanation position and the gaze position.
Owner:HITACHI LTD

Observation unit, traveling wave tube unit, and observation method

The present disclosure relates to an observation unit, a traveling wave tube unit, and an observation method. An observation unit includes a housing having a vacuum inside, a base housed in the housing and fixed to the housing, and an observation device housed in the housing and supported by the base, wherein the base includes a first magnet, and the observation device includes a second magnet mounted so as to repel the first magnet and supported in a state of being separated from the base.
Owner:NEC NETWORK & SENSOR SYST

System

An object of a system according to an embodiment is to detect a sign of the occurrence of an earthquake in real time and promptly notify the sign.SOLUTION: A system includes an observation unit, an analysis unit, a detection unit, and a notification unit. The observation unit observes crustal movement or a change in groundwater level. The analysis unit analyzes the data collected by the observation unit in real time. The detector detects the presage of the earthquake occurrence based on the data analyzed by the analyzer. The notification unit notifies the prediction result obtained by the detection unit.SELECTED DRAWING: Figure 1
Owner:SOFTBANK GROUP CORP

A system for observing bouncing behavior of dust-containing liquid droplets impacting a wall surface

The present application provides a kind of dust-containing droplet impact wall bounce behavior observation system, it is related to bounce behavior observation field;The observation system includes: particle generator, environment bin, displacement control unit and observation unit;Particle generator emits particle gas flow;Solid wall is arranged in the inside of environment bin, and environment bin makes the particle gas flow entering into change into dust-containing droplet;Displacement control unit emits at least two laser beams to environment bin, and makes laser converge to form optical trap;Optical trap is used to capture dust-containing droplet;Displacement control unit adjusts the movement speed and movement direction of the dust-containing droplet captured, to control the dust-containing droplet captured to collide with solid wall at set speed and set direction;Observation unit carries out real-time observation to the movement track of dust-containing droplet colliding with solid wall at set speed and set direction;The present application can realize the observation to the bounce behavior of dust-containing droplet impacting wall.
Owner:HANGZHOU INTERNATIONAL INNOVATION INSTITUTE OF BEIHANG UNIVERSITY

Elevator brake device deterioration prediction system

An object of the present invention is to provide a brake device deterioration prediction system capable of accurately predicting a deterioration time of a brake device. The brake device deterioration prediction system includes an observation unit, a conversion unit, a generation unit, and a prediction unit. The observation unit acquires operation data regarding the operation of the brake device when the brake device operates. The conversion unit converts the operation data into index data indicating deterioration of the brake device for each preset unit of time. The generation unit generates a deterioration model including a trend component showing a trend of long-term change and a periodic component showing a periodic change, as a model showing a change-with-time of deterioration represented by the index data. The prediction unit predicts the deterioration time of the brake device based on the deterioration model.
Owner:MITSUBISHI ELECTRIC CORP +1

Metro train speed measurement system, speed measurement equipment and speed measurement method based on multi-source information

The invention discloses a metro train speed measurement system, speed measurement equipment and speed measurement method based on multi-source information, and the metro train speed measurement system comprises a trackside sensing layer which comprises N microwave sensors which are linearly deployed along a single-side track at a fixed interval D and cover an interval needing to be monitored; the synchronization and data transmission layer comprises a master clock and a slave clock based on an IEEE1588 precision time protocol, and the master clock is synchronously deployed in the central processing module, provides a transmission channel with determined bounded delay for phase data and has link redundancy capability; according to a vehicle-mounted self-consistent observation source, auxiliary observation units based on a visual odometer are deployed at the head and the tail of each train, and the visual reckoning speed of the train is obtained through image sequence analysis; and the central processing module is used for extracting a rigid translation speed by constructing a space-time matrix, separating deformation and vibration from the rigid translation speed, calculating the moment when each bogie passes through each microwave sensor by tracking the form of components in the space-time matrix, and then outputting a final speed of comprehensive confidence through speed cross validation.
Owner:NANJING COMM INST OF TECH

Observation apparatus and observation method

Continuously monitor the detection performance of the observation device. [Solution] The observation device includes an observation unit, a storage unit, and a control unit. The observation unit observes a predetermined area. The storage unit stores the viewing distance, which indicates the maximum distance at which an observation target within the predetermined area can be identified, and a threshold value. Based on the results of the first observation by the observation unit, the control unit obtains the maximum observation distance, which indicates the distance to the location of the furthest identified first observation target, and sets the viewing distance and threshold value based on the comparison result between the maximum observation distance and the threshold value. When predetermined conditions are met, the control unit decreases the threshold value.
Owner:KYOCERA CORP

Soil-buried submarine pipeline oil spill simulation test device and test method

The invention discloses a soil-buried submarine pipeline oil spill simulation test device and method, and relates to the technical field of ocean engineering and environmental protection. The device comprises a simulation test unit, a fluid supply unit, a control unit and an observation unit. The simulation test unit comprises a water tank, a sediment containing device and a simulation oil pipeline, oil spilling holes are formed in the side wall of the pipeline, and internal threaded holes are formed in the top. The control unit comprises a pneumatic valve, an air compressor and an electromagnetic valve, the pneumatic valve is directly connected to the inner threaded hole in a sealed mode through threads, and electric control opening and closing of the oil overflow hole are achieved. And the observation unit adopts a high-speed camera to align to a transparent soil area in the device. The method comprises the steps of model assembly, system connection, oil spill simulation, data acquisition and the like. According to the invention, the oil spilling process of the buried pipeline can be simulated with high fidelity, and dynamic accurate control of a leakage port and visual collaborative observation of the diffusion process of an oil phase in a soil body are realized.
Owner:EAST CHINA UNIV OF SCI & TECH

Load management device and load management method

The purpose is to understand the execution process of information processing that is involved in fluctuations in the usage of processing resources during operation. [Solution] The load management device 1 includes a classification unit 13 configured to take input data based on the amount of processing resources used by the execution of each sequence of state transitions of multiple events for each observation unit, acquired by the acquisition unit 10, as an unknown input, provide it to a trained classification model 12A that reflects the correlation between the amounts of processing resources used by the execution of each sequence of state transitions of multiple events, perform calculations on the trained classification model 12A, and output a classification result regarding the degree of computational load in the information processing device 2 for each observation unit, and a load management unit 14 configured to output a response to the computational load in the information processing device 2 according to the classification result output by the classification unit 13.
Owner:INTERNET INITIATIVE JAPAN INC

Module visualization multi-material grouting test device

The utility model relates to the technical field of grouting, and discloses a module visualization multi-material grouting test device which comprises a surrounding rock container module group, a grouting unit group and a control cabinet, the surrounding rock container module group comprises a plurality of surrounding rock container modules, and the grouting unit group comprises a plurality of grouting containers; a pressure detection piece and a driving piece are arranged on the grouting container; the output ends of the plurality of grouting containers correspond to the input ends of the plurality of surrounding rock container modules respectively, and are used for correspondingly filling different grouting materials into the plurality of surrounding rock container modules; observation units are correspondingly arranged on the surrounding rock container modules respectively; the control end of the control cabinet is connected with the observation units, the pressure detection piece and the driving piece in a wireless communication mode. According to the device, through the design of the surrounding rock container module group and the grouting unit group, high modularization is realized, so that a user can flexibly adjust the number of surrounding rock container modules and the number of grouting containers according to experiment requirements, and the grouting experiment requirements of different scales and complexity are met.
Owner:CHINA RAILWAY FIRST SURVEY & DESIGN INST GRP

Reception unit, processing system, processing method, and program

To provide a reception unit capable of performing communication at higher speed.SOLUTION: The reception unit includes an observation unit that observes a current level and a voltage level of a predetermined signal line in a bus between the reception unit and the supply unit, and a transmission unit that, when the current level and the voltage level observed by the observation unit are a first current level and a first voltage level indicating that the reception unit has a right to start information exchange via the bus, transmits assignment information that is information for assigning the right to the supply unit.SELECTED DRAWING: Figure 10
Owner:NEC PLATFROMS LTD

A kind of smart meter durability test equipment

PendingCN122283581AAccurate DurabilityAccurately assess durabilityControl cellSmart meter
This invention discloses a smart meter durability testing device, belonging to the field of meter testing technology. It includes a test stand, on which a simulation test unit, a tightening variable control unit, and a data observation unit for detecting test results are installed. This invention uses high and low temperature testing, damp heat cycling testing, and salt spray corrosion testing modules in the simulation test unit to simultaneously simulate multiple extreme environments, accurately assessing the durability of the meter under complex operating conditions. Through a magnetically controlled connector combined with a tightening motor, the tightening stroke and pressure of the terminal screws can be precisely controlled, thereby exploring the impact of different tightening forces on the durability of the smart meter's terminals. A digital display power monitor synchronously records power consumption with the smart meter, directly comparing the test data with the actual value to quickly identify metering deviations. A camera periodically captures data from the display screen, tracking the meter's performance changes at different test stages and accurately locating the time point of failure.
Owner:SHENZHEN LONGYUAN TECH CO LTD +1

Device for optically checking documents

Device for optical inspection of documents (3, 22, 103, 113, 133), with a light source (9, 79, 119), an observation unit (1, 91, 101, 111; 121, 131) which has a window (2a, 2c; 92, 102; 122) through which the light emitted by the light source (9, 79, 119) for the examination of the documents (3, 22, 103, 113, 133) by an observer (11) exits, and a coupling unit (14, 14a) to introduce the light emitted from the light source (9, 79, 119) from outside into the observation unit (1, 91, 101, 111; 121, 131), characterized by the fact that the window (2a, 2c; 92, 102; 122) contains a fluorescent substance, and the window is formed by a support plate (2a, 2c; 92, 102; 122) which is suitable for supporting the document to be examined (3, 22, 103, 113, 133) in order to transmit the light emerging from the window through the document (3, 22, 103, 113, 133) towards the observer (11).
Owner:NATH GUNTHER

Easy-to-lay thermohaline profile observation system and laying method thereof

The invention discloses an easy-to-lay thermohaline profile observation system and a laying method thereof. The system is composed of an overwater floating body unit, an underwater observation unit, a connecting cable and a water-soluble auxiliary device. The device is restrained to be of a compact integrated structure before being put, and self-driven switching from a restrained state to an observation state is achieved based on sequential dissolution of a controllable degradable material after the device enters water; the water-soluble stent, the bandage and the buckle are preferably selected from a PVA / CMC system, and have both dry and wet strength and predictable dissolution rate. The cable is subjected to piecewise linear constraint, and locking force is gradually reduced from bottom to top, so that orderly unfolding of releasing the cable at a bottom section and releasing the cable at an upper section is realized, initial disturbance is reduced, and the unfolding success rate is improved. Through cambered surface lifting and anti-slip limiting, streaming interference is reduced, flexible connection of a shallow-draft floating body, small floating balls arranged along a cable and a bottom end counterweight are matched, the unfolded chain shape tends to be perpendicular, and the device is suitable for continuous observation of a thermohaline section within the depth range of about 5-100 m.
Owner:NANJING UNIV OF INFORMATION SCI & TECH

Operation amount determining device, molding device system, molding machine, computer program, operation amount determining method, and state display device

The present invention provides an operation quantity determining device for determining the operation quantity related to a molding machine. The operation quantity determining device includes: an observation unit that acquires observation data obtained by observing physical quantities related to the molding process when the molding machine is performing molding; a state display unit that generates a state representation mapping diagram representing the state of the molding machine based on the observation data acquired by the observation unit; and an operation quantity output unit that outputs the operation quantity based on the state representation mapping diagram generated by the state display unit.
Owner:THE JAPAN STEEL WORKS LTD

Plateau multi-source meteorological data intelligent fusion method and system

The invention relates to the technical field of meteorological information processing and intelligent analysis, in particular to a plateau multi-source meteorological data intelligent fusion method and system. The method comprises the following steps: by taking environmental constraint as a core, synchronously binding a meteorological observation value and an environmental parameter in a data acquisition stage to form an environmental perception type data unit; time sequence alignment is completed based on environment similarity, space mapping is realized through environment correction, and a space-time consistent observation structure is constructed; performing reliability layering and dynamic hierarchy adjustment on an observation unit through local environment consistency evaluation, and performing reconstruction and weight dynamic adjustment on features in combination with an environment driving mechanism to realize collaborative fusion of multi-source data under time, space and environment constraints; and a fusion result with high adaptability and strong interpretability is formed through environment evolution prediction and feedback correction. According to the invention, a full-process intelligent closed loop from data acquisition, processing and fusion to optimization output is realized.
Owner:NORTHWEST INST OF ECO ENVIRONMENT & RESOURCES CAS

system

The system according to this embodiment aims to facilitate communication with the person receiving care and to support health management. [Solution] The system according to the embodiment comprises a conversation unit, a video unit, an observation unit, and a notification unit. The conversation unit engages in conversation with the person receiving care. The video unit displays images based on the information obtained by the conversation unit. The observation unit observes changes in the physical condition of the person receiving care and provides advice. The notification unit provides notifications in emergencies based on the information obtained by the observation unit.
Owner:SOFTBANK GROUP CORP

Anomaly detection device and anomaly detection method

The aim is to more reliably estimate anomalies contained in the frequency spectrum of a signal. [Solution] The anomaly management device 1 includes a classification unit 13 that takes input data based on the intensity of each of the multiple frequency components for each observation unit as unknown input, provides it to a trained classification model 12A that reflects the correlation between the intensities of each of the multiple frequency components for each observation unit, performs calculations on the trained classification model 12A, and outputs a classification result regarding the presence or absence of anomalies in the frequency spectrum of the signal for each observation unit.
Owner:INTERNET INITIATIVE JAPAN INC

Monitoring device, monitoring method, and non-transitory computer-readable medium

A monitoring device according to the present disclosure includes a division unit for dividing a three-dimensional space indicating point cloud data into at least one divided space, an observation unit for observing a feature amount of first point cloud data included in the divided space in a reference period and observing a feature amount of second point cloud data included in the divided space in an observation period, and a determination unit for determining, as an abnormal state, a first divided space in which a time during which a difference between the feature amount of the second point cloud data and the feature amount of the first point cloud data exceeds a first threshold value is longer than a second threshold value, in which the first divided space is included in the at least one divided space.
Owner:NEC CORP

Compact focal spot observation microscopic device

The invention belongs to the technical field of light spot observation equipment, and mainly provides a compact focal spot observation microscopic device which comprises a mounting frame, a three-dimensional adjusting mechanism arranged on the mounting frame and a microscopic optical mechanism driven by the three-dimensional adjusting mechanism to move. The microscopic optical mechanism comprises a driving assembly, an observation unit and a beam splitter are arranged on the driving assembly, the observation unit is connected with a shielding total cylinder, a microscope objective is arranged in the shielding total cylinder, the beam splitter is used for extending into a light path to reflect part of laser into the shielding total cylinder, and part of laser is imaged on the observation unit after passing through the microscope objective; the driving assembly is used for driving the beam splitter to extend into or out of a light path. According to the invention, in a limited space, the driving assembly drives the beam splitter to move along the vertical direction, so that the beam splitter can extend into or out of the light path, the microscope objective can be quickly added into and removed from the focusing light path, and the observation of the microscope objective on focal spots is realized.
Owner:SHANGHAI TECH UNIV

Full-process intelligent control system for concrete pole production

The invention relates to the technical field of intelligent manufacturing and concrete product production equipment control, in particular to a concrete pole production full-process intelligent control system, which comprises a reference parameter identification unit used for executing a stepped speed-up test and resolving an empty mold impedance parameter representing inherent mechanical resistance of a mold; the load torque observation unit is used for acquiring electromagnetic driving torque in real time and stripping out net load torque only acting on concrete materials; the rheology and distribution state analysis unit is used for resolving a dimensionless eccentricity factor representing the material distribution uniformity degree; the self-adaptive closed-loop control unit is used for generating corresponding control instructions: outputting an emergency braking instruction when the eccentricity degree exceeds a safety limit, outputting a constant-speed shearing instruction when the rheological state does not reach the standard, and outputting a self-adaptive acceleration instruction when the rheological state reaches the standard and the eccentricity degree is within a safety range; the problem that the material state in the closed mold cannot be directly observed is solved, and perspective monitoring of the physical properties of the concrete is achieved.
Owner:GUIZHOU JIANGYUAN ELECTRIC POWER CONSTR CO LTD +1

Data processing method and related equipment

The embodiment of the invention provides a data processing method and related equipment. The method comprises the following steps: acquiring a covariable of each first observation unit in a first unit group and a covariable of each second observation unit in a second unit group; the first observation unit is an observation unit which is subjected to intervention operation, and the second observation unit is an observation unit which is not subjected to intervention operation; the covariable comprises observation index data of the observation unit before intervention operation; performing prediction according to the observation index data of each first observation unit before intervention operation to obtain a prediction index result of each first observation unit; performing prediction according to the observation index data of each second observation unit before intervention operation to obtain a prediction index result of each second observation unit; according to the prediction index result of the first observation unit and the prediction index result of the second observation unit, the first observation unit and the second observation unit are matched, and matching between the observation units can be efficiently carried out.
Owner:TENCENT TECHNOLOGY (SHENZHEN) CO LTD

Transient electromagnetic arbitrary waveform three-dimensional forward modeling method, device and equipment

PendingCN122065573ABreaking through sequence constraintsMaintain numerical accuracyDesign optimisation/simulationSpecial data processing applicationsTransient electromagneticsMesh grid
The invention relates to a transient electromagnetic arbitrary waveform three-dimensional forward modeling method and device and computer equipment. The method comprises the following steps: decomposing an emission source into a plurality of independent sources, adaptively constructing a local grid of each receiving point according to skin depth information of each time channel, and forming a minimum observation unit on a single time channel by a single independent source and a single local grid; determining a characteristic step length of a corresponding time channel according to the skin depth information, and calculating an electromagnetic field response result on a minimum observation unit; electromagnetic field response results of the multiple minimum observation units are subjected to parallel calculation, and a complete transient electromagnetic arbitrary waveform three-dimensional forward modeling result is obtained through synthesis. According to the method, a complete parallelization calculation framework is realized, the calculation load is greatly reduced while the numerical precision is maintained, the broadband transient electromagnetic efficient forward modeling simulation is possible in a large-scale parallel calculation environment, and a powerful technical support is provided for three-dimensional electromagnetic detection under a complex geological condition.
Owner:AEROSPACE INFORMATION TECH UNIV

Sensing system

A sensor terminal 10 according to the present disclosure comprises: an observation unit 18 that observes a surrounding physical quantity; a power source 11 that supplies power to the observation unit 18; a result presentation unit 17 that presents an observation result obtained by the observation unit 18 to the outside by a prescribed method; and a presentation unit power source 16 that supplies power to the result presentation unit 17.
Owner:NT T INC

Multi-spindle concurrent processing obstacle avoidance system and method based on digital twinning and CBF

The invention belongs to the technical field of large multi-axis linkage numerical control machining, particularly relates to a multi-spindle concurrent machining obstacle avoidance system and method based on digital twinning and CBF, and solves the problem that multi-spindle dynamic obstacle avoidance behaviors cannot be intelligently coordinated. The system comprises a digital twin mapping unit which is used for simulating a material removal process in real time and updating a dynamic geometric model of a workpiece; the hierarchical state observation unit is used for calculating the minimum directed distance between each main shaft and a workpiece and between the main shafts and the gradient of the minimum directed distance in real time by adopting algorithms such as an octree and GJK; and the safety barrier control unit is embedded in an interpolation period of the numerical control system, constructs a high-order control barrier function constraint with the relative order being two by using the distance information, and generates a correction control instruction which is safe and is as close as possible to an original instruction by solving a quadratic programming problem on the premise of fully considering the dynamic limitation of a machine tool shaft system. And the real-time, dynamic and collision-free machining effect is achieved when the multiple spindles cooperatively work in the narrow space.
Owner:HANBA INTELLIGENT TECHNOLOGY (TAIZHOU) CO LTD