31results about How to "Reliable determination" patented technology

The invention discloses a five-phase permanent magnet motor multi-objective optimization method and a control system thereof, and belongs to the technical field of motor body design optimization and motor control. According to the multi-objective optimization method for the five-phase permanent magnet motor, the optimal optimization value of the motor parameters is obtained based on the genetic aggregation response surface and the multi-objective genetic algorithm, the design variables of the motor are comprehensively considered, and the optimization accuracy is improved; according to the control system of the five-phase permanent magnet fault-tolerant motor, iterative learning control serves as a current control technology and is used for recovering the performance of the five-phase permanent magnet motor under the fault condition, the advantages of iterative learning control and counter electromotive force control are combined, high-performance operation of the motor can be ensured under the fault condition, and the reliability of the five-phase permanent magnet fault-tolerant motor is improved. Ripple-free torque output is realized, and ohmic loss is minimized. The fault diagnosis module of the control system diagnoses short-circuit faults and open-circuit faults by using a time sequence neural network and a Kalman filter, and has real-time performance and strong adaptive ability.

The invention relates to a bridge finite element model correction method based on deep learning, and belongs to the field of structural health monitoring. According to the method for bridge finite element correction based on an inverse agent model of deep learning, structural response serves as an independent variable, structural attributes serve as dependent variables, and the structural response is trained by inputting a finite element model of the structural attributes to be updated. The training set is obtained by executing a plurality of finite element model instances, wherein each instance is formed by assigning random values to structural attributes. Structural response measured by an experiment can be used as input of a trained inverse proxy model, and structural attributes used for updating a finite element model are used as output. The method can overcome the problem that the number of to-be-corrected parameters in a traditional correction method is limited, and is suitable for correction of various bridge finite element models.

The invention relates to the technical field of rocket engine high-altitude simulation tests, and discloses a diffuser thermal protection design method, which comprises the following steps: determining a gas supersonic flow and gas subsonic flow switching position in a diffuser; the interior of the diffuser is divided into a fuel gas supersonic speed section, a fuel gas subsonic speed straight barrel section and a fuel gas subsonic speed expansion section; a cooling liquid jacket is arranged around the diffuser; the cooling liquid jackets corresponding to the fuel gas supersonic velocity section, the fuel gas subsonic velocity straight barrel section and the fuel gas subsonic velocity expansion section are respectively an A-section cooling liquid jacket, a B-section cooling liquid jacket and a C-section cooling liquid jacket; the diameter of the outer wall of the A-section cooling liquid jacket is larger than that of the outer wall of the B-section cooling liquid jacket. The cooling liquid jackets with different thicknesses surround the fuel gas supersonic speed section and the fuel gas subsonic speed straight barrel section respectively, so that the flowing speed and the heat exchange coefficient of the cooling liquid are increased, heat is transmitted out more quickly, the temperature of the fuel gas subsonic speed straight barrel section is prevented from rising quickly, and then the diffuser obtains more reliable thermal protection.

The present application relates to the technical field of wearable devices, and in particular to a watch wearing detection system, method, terminal device and computer storage medium, the system comprising a dial, and a first strap and a second strap connected to the dial, wherein the first strap and the second strap are respectively provided with a signal sending module and a signal receiving module. After determining that the first position of the first strap matches the second position of the second strap, the present application transmits and receives the heart rate signal sent by the heart rate detection module through the signal sending module and the signal receiving module to complete the process of watch wearing detection, so that the control module compares the heart rate signal sent by the signal receiving module with the target signal in a targeted manner, and can accurately determine the wearing state of the watch. Once it is determined that the heart rate signal is consistent with the target signal, it is determined that the watch is in an abnormal wearing state, and an early warning prompt is given in time according to the abnormal wearing state, thereby improving the stability of the watch wearing detection.

Method and device for operating a vehicle to avoid or eliminate traffic jams. The invention relates to an improved possibility of avoiding or eliminating traffic jams. In particular, the invention relates to a method for operating a vehicle (100), wherein a dynamic object (200) is predicted to intersect at least part of a first traffic area portion (140) occupied by the vehicle (100), wherein the vehicle (100) is in a waiting state for release to continue driving. A trajectory (150) of the vehicle (100) is then determined, which trajectory (150) at least eliminates or avoids the intersection of the dynamic object (200) with the first traffic area portion (140). Furthermore, the invention relates to a device for operating a vehicle, a program element and a computer-readable medium having such a program element.

The present disclosure relates to a fan fault detection method, device, medium and equipment. The method comprises: acquiring current working condition data of the fan; determining whether the fan has a fault according to the acquired current working condition data, predetermined normal working condition data, a principal component analysis (PCA) algorithm, a Gaussian mixture clustering (GMM) algorithm and a kernel density estimation (KDE) algorithm. In this way, it can be accurately and reliably determined whether the fan has a fault, and the false alarm rate is reduced.

The present invention provides a vehicle heading angle determination method, system, vehicle and storage medium, the method comprising: determining first shape point data of a first lane boundary line based on a visual sensor arranged on the vehicle, determining second shape point data of a second lane boundary line based on a high-precision positioning system and a high-precision map system arranged on the vehicle; determining a first projection point from the vehicle to the first lane boundary line and a second projection point from the vehicle to the second lane boundary line; determining a first shape point distance between each first lane boundary line shape point and the first projection point, and a second shape point distance between each second lane boundary line shape point and the second projection point; constructing a first fifth-order fitting equation, a second fifth-order fitting equation, a third fifth-order fitting equation and a fourth fifth-order fitting equation; determining the vehicle heading angle based on the first fifth-order fitting equation, the second fifth-order fitting equation, the third fifth-order fitting equation and the fourth fifth-order fitting equation. The present invention improves the accuracy of the vehicle heading angle while improving the determination efficiency.

The present invention discloses an RTU-based oil pumping inter-pumping start-stop control method and system, which not only considers the actual influence of historical well opening data of the oil well within a preset historical well opening period on the oil production, but can also effectively and reliably determine the inter-pumping time of the oil well corresponding to the oil pumping unit, and then divides at least one group of start-stop time periods within the inter-pumping time of the oil well, traverses and screens the time points in each group of start-stop time periods, so as to obtain the required start-stop time periods and the inter-pumping start time under the corresponding circumstances, and also considers the influence of the pump fullness of the oil pumping unit within the start-stop time period on the inter-pumping control, so as to obtain the target operation cycle of the oil pumping unit according to the pump fullness and the corresponding parameter threshold value, and finally controls the oil pumping unit to perform inter-pumping operation of the oil well according to the target operation cycle, which can significantly improve the inter-pumping control accuracy and adaptability of the oil pumping unit, realize safe and reliable inter-pumping automatic operation, and help reduce the difficulty of inter-pumping management of well site personnel.

A method for analyzing the structure of a sample molecule according to the present invention is a method for analyzing the structure of a sample molecule using a mass spectrometer. The mass spectrometry device is provided with: an ion source based on the MALDI method; an ion capture unit for capturing ions having a predetermined mass-to-charge ratio from ions generated by the ion source; and a detection unit for detecting the ions captured by the ion capture unit. The method for analyzing the structure of a sample molecule comprises the steps of: acquiring standard analysis conditions for an ion amount setting item, a mass-to-charge ratio range setting item, and a signal strength setting item when measuring molecular weight-related ions; performing product ion measurement under a modified analysis condition obtained by modifying at least one of the ion amount setting item, the mass-to-charge range setting item, and the signal strength setting item among the standard analysis conditions, and acquiring mass spectrum data of the product ion measurement; extracting peaks corresponding to fragment ions from the mass spectrum data; and determining at least a portion of the structure of the sample molecule on the basis of the mass information of the extracted peaks. As a result, fragment ions required for structural analysis can be preferentially detected with good sensitivity.

The invention relates to a roller replacement method and device, computer equipment, a readable storage medium and a program product, and relates to the technical field of steel manufacturing. The method comprises the steps that in response to a replacement monitoring instruction for a target roller, plate blank attribute information of each target plate blank rolled by the target roller is obtained; for each target plate blank, based on the plate blank attribute information of the target plate blank, screening out a target plate blank category to which the target plate blank belongs from the plurality of candidate plate blank categories; the rolling weights of all the target plate blank types are accumulated, and the rolling weight sum is obtained; the rolling weight is used for representing the influence degree of the target plate blank belonging to the target plate blank category on the target roller in the rolling process; under the condition that the rolling weight sum exceeds the weight threshold value, a replacement instruction for the target roller is generated; the replacement instruction is used for indicating replacement of the target roller. By adopting the method, the production efficiency can be improved.

The present disclosure relates to a method, device and system for determining the posture change information of a movable device, and belongs to the field of machine vision technology. The method comprises: determining the relative position information of the physical point corresponding to each feature point relative to the movable device according to the three-dimensional position information of at least one feature point in the image captured by each three-dimensional image capturing component when the movable device is in the initial position; in the process of the movable device moving, in the image currently captured by each three-dimensional image capturing component, determining the three-dimensional position information of the feature point contained in each image; determining the posture change information of the movable device relative to the initial position according to the relative position information corresponding to the determined physical point, the three-dimensional position information of the currently determined feature point and the pre-stored relative posture information between different three-dimensional image capturing components. By adopting the present disclosure, the posture change information can also be reliably determined under harsh environmental conditions.

The invention relates to the technical field of power supply capacity detection, and discloses a capacity detection method and system for an automobile emergency power supply. The method comprises the steps of determining the rated capacity of the automobile emergency power supply; according to the rated capacity, connecting the automobile emergency power supply to a load of an electricity measurer to carry out a discharge test, and recording discharge data; inputting the discharge data into an actual capacity mathematical model established based on a deep learning algorithm to obtain the actual capacity and the residual capacity of the automobile emergency power supply; calculating an electric quantity attenuation value of the automobile emergency power supply according to the actual capacity and the discharge data; and determining a power supply working scheme of the automobile emergency power supply according to the residual capacity, the actual capacity sum, the discharge data and the electric quantity attenuation value. According to the method, the accuracy of battery capacity detection can be effectively improved, and then a reasonable power supply working scheme is determined.

The invention relates to a method for determining or monitoring an effective delivery flow (Q) of an eccentric worm pump during operation, the eccentric worm pump having a stator (1) and a rotor (2) eccentrically rotating in the stator (1) at a pump frequency, the effective delivery flow (Q) being determined from the difference between an ideal delivery flow (Q0) and a return flow (QB) oriented opposite the ideal delivery flow (Q0), the flow rate is dependent on at least one gap in the sealing line between the rotor (2) and the stator (1), an operating parameter of the pump, which represents the gap and thus the flow rate (QB), is measured, the rotor (2) has an operating parameter which is periodically pulsated at a pump frequency and the pulsation amplitude of which depends on the wear state of the rotor and / or the stator and on the other hand is associated with a tilt of the rotor (2) in the stator (1), which tilt influences the gap (w) and thus the reflux quantity (QB), the return flow rate (QB) and the effective delivery flow rate (Q) are calculated from the measured value of the operating parameter and a predetermined characteristic value of the pump and / or of the medium to be delivered repeatedly by means of a mathematical model.

This invention provides a method and system for intelligent identification of pollution sources using quantum radar. The method includes achieving precise positioning through preprocessing of photonic quantum data frames, construction of a multi-dimensional feature space, and iterative window optimization. Abnormal signals are filtered based on a quantum background noise Poisson statistical model to generate a preprocessed data frame. A quantum feature space is constructed by fusing photon wavelength, polarization state, and arrival time to generate a back-projected probability distribution map. A composite displacement vector is constructed to update window parameters by calculating the first, second, and third central moments and spatial gradient of the probability distribution within the window. When the magnitude of the displacement vector is less than the convergence threshold, the location, diffusion range, and direction of the pollution source are output.

The invention discloses a simulation and life cycle-based mixed refrigerant component optimization method and system, and the method comprises the steps: generating a plurality of mixed refrigerants with different component mass proportions according to a plurality of refrigerant elementary substances through an exhaustion method or a genetic algorithm; calculating a refrigeration energy efficiency ratio, a heat pump energy efficiency ratio and a first global warming potential value of the mixed refrigerant; simulating the mixed refrigerant through the mixed refrigerant life cycle carbon emission model, and calculating life cycle carbon emission; simulating the mixed refrigerant through a flammability model, and calculating a flammability calculation factor; and according to the target function, performing component optimization on the life cycle carbon emission and the flammability calculation factor to obtain a target mixed refrigerant. According to the method, the carbon emission and the flammability of various refrigerant simple substance combinations of the mixed refrigerant can be comprehensively analyzed, the proper mixed refrigerant can be rapidly and reliably determined according to the use requirements of different refrigeration systems, and the method can be widely applied to the technical field of computers.

The invention discloses a method for determining a quench position of a superconducting magnet and related equipment, and relates to the technical field of superconducting magnets. The method comprises: obtaining each critical current of a superconducting magnet in a plurality of excitation fixtures; obtaining the magnetic field intensity distribution of the superconducting magnet in each excitation fixture by loading the critical current; selecting any two excitation fixtures as a first group; obtaining the difference in magnetic field intensity of each position of the superconducting magnet in the two excitation fixtures in the first group as a first difference; determining the quench region of the superconducting magnet according to the critical current difference and the first difference; and quickly realizing accurate determination of the quench position of the superconducting magnet by changing the excitation fixture and analyzing the changes in the critical current and the magnetic field, which is of great significance to improving the winding of superconducting coils and the preparation of superconducting materials.

The invention relates to a method for operating a brake system (1) of a motor vehicle, comprising a service brake device (2) having at least one wheel brake (3), which brake system adjusts a brake pressure applied to the wheel brake (3) at least in short time as a function of the setting of an operating element, the brake pressure is used to generate a brake force acting on a brake disc (4) of the wheel brake (3). According to the invention, the state of the coating (6) of the brake disc (4) of the wheel brake (3) is determined on the basis of the brake pressure present on the wheel brake (3) and the deceleration of the motor vehicle caused by said brake pressure. The invention also relates to a brake system (1) for a motor vehicle and to a computer program product.

The invention provides an auxiliary jig for crystal bar bonding, and relates to the technical field of silicon carbide wafer processing. The auxiliary jig for crystal bar bonding comprises a base and a back plate, the base extends in the first direction, and the back plate is perpendicularly arranged on the first edge, extending in the first direction, of the upper surface of the base; the first positioning plate is arranged on the upper surface of the base, the surface, away from the back plate, of the first positioning plate is a first positioning face used for positioning a workpiece plate, the first positioning face is perpendicular to the upper surface of the base and is parallel to a second positioning face, located on the same side as the base, of the back plate, and the second positioning face is used for positioning the side portion of a crystal bar; and the second positioning plate is movably arranged on the back plate and can move in a reciprocating mode relative to the back plate in the first direction, a third positioning face of the second positioning plate is perpendicular to the upper surface of the base and the second positioning face, and the third positioning face is used for positioning the end face of the crystal bar.

The embodiment of the invention discloses a transaction information management method and related equipment, and relates to the field of information technology security. In the embodiment of the specification, a block chain node server obtains transaction information obtained by performing standardization processing and encryption processing on transaction information by electronic equipment, and when the source of the transaction information is detected to be a preset source and the format is detected to be a preset format through an intelligent contract, the transaction information is obtained. And linking the transaction information to a distributed account book for storage through a block chain technology. The electronic device may download the transactional intelligence from a distributed ledger to optimize the security system of the electronic device.

A method (200, 300) of determining a position of an elevator car (3) of an elevator system (1), the elevator car (3) being movably arranged in an elevator hoistway (23) of the elevator system (1), the method (200, 300) comprising: imaging a hoistway component of the elevator system (1) using an imaging sensor (9) mounted to the elevator car (3), the imaging sensor (9) automatically adjusts a shutter value (103) of the imaging sensor (9) during imaging; moving the elevator car (3) along a travel axis (7) of the elevator car (3); detecting a first marker (41) while moving the elevator car (3), the first marker (41) being located on a hoistway component of the elevator system (1), the first marker (41) being detected based on a shutter value (103) of the imaging sensor (9); and determining a first position of the elevator car (3) on the basis of detecting the first marker (41).

The invention discloses an ignition control system based on online detection of a pressure relay. The ignition control system comprises an ignition unit, a gas storage device, an ignition controller and the pressure relay. The ignition unit is connected to the gas inlet end of the gas storage device in parallel, and the pressure relay is arranged on a gas path of the gas storage device. The ignition controller is electrically connected with the ignition unit and the pressure relay at the same time, and the ignition controller is used for collecting the output state of the pressure relay and controlling the ignition unit to ignite according to set ignition conditions so as to inflate the gas storage device; the invention further discloses a corresponding control method. The mechanical pressure relay is adopted as a pressure detection element, ignition conditions based on online detection of the pressure relay are designed, regular verification is not needed on the premise that accurate and reliable ignition control is guaranteed, and maintenance-free operation can be achieved.

The invention relates to the technical field of seepage monitoring, in particular to a highway high slope seepage monitoring method and device. Temperature measuring optical fibers are laid along surface water at different heights of the high slope, osmotic pressure monitoring points are arranged, and the temperature value of a window at each position of each optical fiber and the osmotic pressure value of each monitoring point are obtained at each moment; highway high slope underground seepage mainly originates from sudden shallow water such as rainwater, the temperature change is closely related to seepage, and the seepage point location can be determined by analyzing the temperature value change difference of the optical fiber position window at different moments; a seepage area is reasonably determined between the adjacent temperature measuring optical fibers according to the position relation between the seepage point position and the seepage pressure monitoring point and the seepage pressure value; furthermore, due to the fact that seepage is a dynamic change process and is influenced by various factors, the change of the area position of the seepage region among all the temperature measurement optical fibers at different moments and the change characteristics of the seepage pressure value are compared, the high slope landslide risk value at the current moment is determined accordingly, and the stability of the high slope landslide risk value can be evaluated more accurately.

A measuring device (20a, 20b, 20c) for measuring the rotational speed of a component (6, 7a, 7b, 8, 9) of an elevator, escalator, moving walkway or moving ramp, the measuring device comprising an inductive sensor (11), the inductive sensor (11) being arranged stationary relative to the rotational axis (10) of the component (6, 7a, 7b, 8, 9) and adjacent to the component (6, 7a, 7b, 8, 9) or adjacent to a measuring part (16) attached to the component (6, 7a, 7b, 8, 9) in a rotationally fixed manner, and the component (6, 7a, 7b, 8, 9) or the measuring part (16) being configured to be rotationally asymmetric around the rotational axis (10), so that different angular positions of the component (6, 7a, 7b, 8, 9) around the rotational axis (10) generate different output signals in the inductive sensor (11).

The invention provides a laser etching path determination method and device, electronic equipment and a storage medium, and relates to the technical field of laser etching path planning. The method comprises the following steps: firstly, obtaining area size information of a processing area, a data model of a to-be-etched surface and pattern size information of a to-be-etched array; secondly, based on the area size information, the data model and the pattern size information, clustering processing is carried out on the plurality of arrays to be etched, and at least one corresponding clustering cluster is obtained; and then, based on the clustering center of each cluster in the at least one cluster, determining a target laser etching path. On the basis of the content, the problem that in the prior art, the reliability of laser etching path determination is not high can be solved.

The invention discloses a chute for improving the performance of a saddle area of an axial flow pump and a design method and belongs to the field of fluid machinery. The inclined groove is formed in the inner wall of the axial-flow pump water inlet pipe which is installed at the front edge of the axial-flow pump body. The inclined groove and the axis of the axial flow pump water inlet pipe form a preset angle. The skewed slot is obliquely formed in the blade profile direction of the impeller, the two ends of the skewed slot are communicated with the two sides of a water inlet pipe of the axial flow pump respectively, and fluid at the inlet rim is rectified. The skewed slots are quadrilateral grooves, the depths of the grooves are the same, and the bottom surfaces of the grooves are on the same conical surface; a protrusion is formed between every two grooves, and the surfaces of the protrusions are located on the same conical surface. According to the design method for the inhibition chute in the saddle area of the axial flow pump, the size of the chute and the size of the axial flow pump are subjected to multi-scale coupling by establishing a new dimensionless number NOG, the size parameters of the chute can be efficiently, rapidly, accurately and reliably determined, and the design method is suitable for the design of the inhibition chute in the saddle area of the axial flow pump. The small-flow performance of the axial flow pump is improved to the maximum extent, and the design efficiency is affected to the minimum extent.

The invention discloses a new energy overhead current collection line grounding fault positioning method based on tower fault grounding current transient characteristics, and belongs to the field of power system control protection. The method comprises the following steps: firstly, acquiring fault grounding current recording data of all towers of a fault line, and then preliminarily screening out sampling data containing high-frequency characteristic components; thirdly, an energy spectrum is obtained through wavelet packet decomposition, and a suspected fault tower is selected; and then, in a suspected fault tower range, carrying out empirical mode decomposition on the obtained fault earth current sampling data, obtaining the mode component and transient energy of the earth fault current of each suspected fault tower, comparing the mode component and transient energy with a set fault transient energy threshold, and accurately screening out the fault tower. Therefore, accurate positioning of the faulted tower level is realized. The method is hardly influenced by transition resistance, tower span and fault distance, the denoising capability is high, the reliability of the distance measurement result is high, and the specific tower with the fault can be accurately identified.

The present application relates to a kind of medical instrument whole-process traceability method and system, belong to medical instrument information management technical field.The method includes: obtaining the UDI acquisition data in the medical instrument circulation process and multiple business node documents;Analysis UDI acquisition data, generates equipment business identity data;According to equipment business identity data, from multiple business node documents, extract link correlation characteristics;Link correlation characteristics are determined based on the link between the candidate business node documents The reliability of node, and the business document chain of corresponding medical instrument is constructed;Link checking is carried out to business document chain using preset link constraint model, and abnormal link node is identified;According to the abnormal type of abnormal link node, generate traceability control instruction.The present application can improve the accuracy of medical instrument cross-business node traceability chain construction, and generate freeze, intercept, supplement review or recall and other control instructions, improve the reliability of medical instrument circulation traceability.

According to the scene response time determination method and device based on the screen recording video and the storage medium provided by the invention, the screen recording video is acquired, and the screen recording video comprises a starting video frame when entering a target scene, an ending video frame when exiting the target scene, a previous video frame of the starting video frame and a next video frame of the ending video frame; determining a foreground and a background of each video frame in the screen recording video by adopting a Gaussian mixture model, marking the foreground of each video frame by adopting a first color, and marking the background of each video frame by adopting a second color; performing frame splitting on the marked screen recording video, and calculating the similarity corresponding to each connected video frame; and determining a starting video frame and an ending video frame according to the similarities, and determining a time difference between the starting video frame and the ending video frame to obtain response time of the target scene. In this way, the analysis accuracy and stability of the screen recording video can be effectively improved, and then the evaluation effect of the scene response time is improved.

The invention relates to the technical field of data processing, in particular to a tobacco variety distinguishing method, electronic equipment and a storage medium, and the method comprises the steps: obtaining a tobacco image in a target area, performing tobacco identification and tobacco segmentation on the tobacco image, screening out a plurality of target tobacco objects and vector information of a grid image corresponding to each target tobacco object, and calculating to obtain a morphological feature data set corresponding to each target tobacco object according to the vector information of the grid image, according to a plurality of pre-obtained morphological characteristic data sets corresponding to a given tobacco variety, calculating the difference between the target tobacco object and the given tobacco variety, and determining whether the tobacco variety to which the target tobacco object belongs and the given tobacco variety are different according to the difference; according to the method, the digitalization of the morphological characteristics of the tobacco leaves is realized based on image acquisition and processing, the difference characteristics and the difference size can be accurately and reliably determined through calculation, and the efficiency and the accuracy of tobacco leaf variety distinguishing are realized.