2088results about "Work measurement" patented technology

An inductive sensor system may comprise an upper rotor comprising an upper target having a first metallic pattern; a lower rotor comprising a lower target having a second metallic pattern; and a stationary circuit board positioned between the upper rotor and the lower rotor. The circuit board comprises one or more transmitter coil sets configured to generate electromagnetic field, and one or more receiver coil sets for sensing relative angular displacement movement between the upper rotor and the lower rotor. The one or more transmitter coil sets and the one or more receiver coil sets are circularly wound.

The invention relates to the technical field of automatic equipment control, in particular to an automatic equipment control system and method and a storage medium. The method comprises the following steps that a high-frequency laser scanner is used for scanning the surface of a target polishing part, B-spline surface fitting is carried out, and a surface fitting surface model is generated; controlling the polishing operation of the polishing industrial robot based on the surface fitting curved surface model, and performing polishing contact state detection to generate contact state point cloud data; based on the contact state point cloud data, grinding expected pose error analysis is carried out, reverse impedance error compensation is carried out, and a reverse impedance compensation amount is obtained; and the joint angle of the polishing industrial robot is corrected through the reverse impedance compensation amount, so that reverse impedance control over the automatic polishing equipment is achieved. By compensating the reverse impedance error of the automatic polishing equipment, accurate control over the automatic polishing process is achieved.

The invention relates to the technical field of motor detection, and discloses a motor instantaneous torque measurement method and system based on a high-bandwidth sensor, and the method comprises the steps: synchronously collecting a torque signal and a multi-source interference variable through the high-bandwidth sensor, and forming an original torque sequence after time synchronization superposition; extracting disturbance frequency characteristics through multi-scale wavelet transform and spectral analysis; a pre-trained adaptive filter model is utilized to generate a filter coefficient matched with the working condition, and primary filtering is completed; residual fluctuation is suppressed in combination with Kalman state estimation, and an optimized torque estimation value is obtained; parameter self-adaptive compensation is realized through online calibration weight updating, and a stable torque measurement sequence is output; load abrupt change pre-judgment and threshold value dynamic updating are achieved based on time-frequency correlation analysis, and finally rapid measurement convergence after working condition abrupt change is ensured through a closed-loop reset mechanism. According to the method, the problem of low instantaneous torque measurement precision in the prior art can be solved.

The invention relates to the technical field of ship propulsion system monitoring, in particular to a shafting load analysis method based on real-time data monitoring, and the method comprises the following steps: S1, collecting a pressure parameter and a displacement parameter of a shafting; s2, performing timestamp alignment and data frame encapsulation to generate a synchronous data stream; s3, shafting natural vibration noise and real load signals are separated, and shafting real-time torque distribution is calculated; s4, if the torque distribution deviates from the correction threshold value, graded early warning is triggered; and S5, generating an interactive report according to the triggered early warning level and the torque distribution result. According to the invention, through multi-sensor synchronous acquisition, edge calculation data alignment, vibration noise decoupling, dynamic safety threshold adjustment and intelligent fault tracing analysis, high-precision monitoring, abnormity early warning and intelligent maintenance of the shafting load are realized, and the safety and operation and maintenance efficiency of ship operation are improved.

The invention relates to the technical field of coupler fatigue test, in particular to coupler fatigue test equipment which comprises a rack, a fixed seat, a sliding seat, a rotating disc, a first mounting plate, a torque sensor and a second mounting plate, the fixed seat is fixedly connected to the rack, the sliding seat is slidably connected to the rack, and the rotating disc is fixedly connected to the rack; the rotating disc is rotatably connected to the fixed seat around the axis of the rotating disc, the rotating axis of the rotating disc is horizontal, the first mounting plate is connected to the end, facing the sliding seat, of the rotating disc, one end of the torque sensor is fixedly connected to the end, facing the fixed seat, of the sliding seat, and the other end of the torque sensor is fixedly connected to the second mounting plate. The torque sensor and the rotating disc are coaxially arranged, and the first mounting plate and the second mounting plate are used for fixing the two ends of the coupler respectively. The torque sensor is adopted for torque acquisition, and the torque sensor and the coupling adopt a direct connection structure, so that errors caused by transmission are reduced, and the fatigue measurement precision of the coupling is improved.

The invention discloses a device and a method for measuring dragging torque of an electronic mechanical brake caliper assembly, and belongs to the technical field of automobile brake system testing. The device comprises a first supporting seat, a driving rotating shaft, a brake disc and a driven rotating shaft assembly with a torque sensor, and precise positioning of a caliper support is achieved through cooperation of a rotating clamp and a guide pin. During testing, the calipers clamp the brake disc firstly to output clamping force and then release pressure, the motor drives the brake disc to rotate by a circle to eliminate inertia moment, and then the torque sensor dynamically collects dragging torque. A modularized brake disc fixing seat is adopted to adapt to products of different specifications, a coupler compensates for shafting offset, a fixing block locking mechanism guarantees non-measurement state safety, and inertia errors are eliminated in combination with a dynamic and static friction separation measurement method. According to the scheme, the problems of positioning deviation, mechanical interference and friction interference in a traditional test are solved, and the measurement precision and efficiency of the dragging torque of the brake calipers are remarkably improved.

Systems and methods for using machine learning to improve control, management, and operation of vehicle systems are disclosed. A system includes a processing circuit configured to: receive information indicative of an observed state of a vehicle system from a sensor of the vehicle, the vehicle system including a fuel system; determine a predictive state of the vehicle system over a prediction horizon; determine one or more constraints for the vehicle system; execute a control problem to determine a predictive state of the vehicle system based on the one or more constraints; determine a plurality of control inputs for the vehicle system based on the executed control problem; and command the fuel system of the vehicle based on at least one of the determined plurality of control inputs.

A sensor includes a structure and a detector. The detector is arranged to detect a deformation of the structure. The structure has at least four elastic sections. The at least four elastic sections are discretely disposed in an imaginary plane.

The sensor comprises two Hall type steering wheel angle sensors which are coaxially installed at a steering wheel transmission shaft, the models of the two Hall type steering wheel angle sensors are consistent, and the two Hall type steering wheel angle sensors are independently connected to a data processing module. When torque generated after the steering wheel is stressed acts on the steering wheel transmission shaft (1), a tubular column of the steering wheel transmission shaft deforms, rotation angles of deformation in different areas in the axial direction are different, and the two Hall type steering wheel angle sensors detect the tubular column rotation angles in the installation areas of the Hall type steering wheel angle sensors respectively and output the tubular column rotation angles to the data processing module. The data processing module calculates the torque borne by the steering wheel according to the angular deviation of the tubular column rotation angle measured by the two Hall type steering wheel angle sensors. Through cooperative work of the two sensors, the torque measuring function can be achieved, and the redundancy safety performance of the system can be improved.

The invention discloses a variable frequency motor load testing device and method, and relates to the technical field of variable frequency motor testing, and the device comprises a motor testing installation platform, a fastening T-shaped bolt, two variable frequency speed regulation asynchronous motors of the same model, a drum-shaped coupler, two inverters, a rectifier, a three-phase voltage regulator, a frequency converter and an intermediate DC link. According to the invention, two frequency conversion speed regulation asynchronous motors of the same model are coaxially connected, and the power generation electric energy of the accompanying test motor is fed back to an intermediate direct current link through an inverter, so that the cyclic utilization of the electric energy and the dual-motor structural design are realized, complex load equipment does not need to be configured, and the fixed asset investment is reduced; for motors of different models, only corresponding accompanying test motors need to be replaced, the universality is improved, through voltage and current monitoring in an intermediate direct current link and motor rotating speed and torque parameter collection, and by combining a multi-dimensional performance evaluation model, precise evaluation of the motor load performance is achieved, the test efficiency is improved, and the strict test requirements are met.

The invention discloses an automatic torsion testing machine. The automatic torsion testing machine comprises a first table support, a second table support, a third table support, a fourth table support and stand bars, wherein the framework of the whole torsion testing machine is formed by the first table support, the second table support, the third table support and the fourth table support, the stand bars are installed on the bottom corners of the framework, a working table is arranged above the third table support and the fourth table support, a second part detecting sensor is installed above the third table support and on the working table, and a first part detecting sensor is installed above the fourth table support and on the working table. The automatic torsion testing machine has the advantages that working efficiency is improved, labor intensity of workers is relieved, and the integral advanced level of an enterprise can be improved.

Provided is a magnetostrictive torque measurement device that makes it easy to ensure accuracy of torque measurement, sensitivity of torque measurement, or both. A magnetostrictive torque measurement device 1 comprises: a rotary shaft 2 that has a detected part 4 that has magnetostrictive characteristics at a portion in the axial direction of an outer circumferential surface; and a magnetostrictive torque sensor 3. The magnetostrictive torque sensor 3 includes: a holder 5 that is formed from a synthetic resin, has an inner circumferential surface 7 that is loosely fitted in the radial direction onto the outside of the detected part 4 so as not to rattle, and does not rotate even during use; and a coil unit 6 that is held by the holder 5 and has a detection part 12 that includes a plurality of detection coils 11 (11a–11d).

The invention provides a joint torque sensor and a robot. The joint torque sensor comprises at least two strain beams and a strain gauge, wherein each strain beam comprises a first mounting surface and a second mounting surface which are oppositely arranged; strain gauges are mounted on each first mounting surface and each second mounting surface; the plane where each first installation face and each second installation face are located intersects with the direction of torque. Wherein the strain gauge comprises at least one strain gauge, the joint torque sensor further comprises a bridge formed by connecting the strain gauges, and a bridge arm of the bridge at least comprises the strain gauges which are correspondingly arranged on a first mounting surface and a second mounting surface on the same strain beam and are arranged in series. The joint torque sensor provided by the invention can improve the detection precision.

The invention belongs to the technical field of power takeoff production, and particularly discloses a torque testing device for a power takeoff, which comprises a transmission case, a top cover is arranged at the top of the transmission case, a rotating shaft is arranged in the transmission case, and an induction assembly is arranged in the transmission case. A movable cavity is formed in the position, close to the edge of one side, of the interior of the transmission box, a testing assembly is arranged in the movable cavity, an adjusting cavity is formed in the position, located on one side of the movable cavity, of the interior of the transmission box, and a feedback assembly is arranged in the adjusting cavity; according to the invention, through the arrangement of the sensing assembly, the testing assembly and the feedback assembly, a power supply can be cut off in time when a maximum testing value is reached during testing, so that damage to testing equipment caused by large torque is prevented, the torque generated by the tested equipment is qualified, and a stable value when the generated torque is small can be measured; and when the torque generated by the equipment is small, the equipment is unqualified.

A strain wave gearing (1) is configured to have a unitized structure having a main bearing (5) that supports an internally toothed gear (2) and an externally toothed gear (3) in a manner that allows relative rotation, and an output flange (6) that is linked to the externally toothed gear (3). The externally toothed gear (3) is formed in the shape of a wine glass and ensures a large hollow diameter, which is required in cases where the externally toothed gear (3) is incorporated into a robot joint part or the like. A strain gauge (101) of a torque sensor (100) is attached to an outward-facing end surface portion of the output flange (6) linked to the externally toothed gear (3). The torque sensor (100) is capable of precisely detecting rotational torque without being affected by flexing of the externally toothed gear (3), and elements such as the strain gauge (101) are not exposed to oil, grease, or the like.

The invention discloses a robot joint transparency testing method and device, and belongs to the technical field of robot joint testing. According to the method, the transmission transparency is evaluated by testing three indexes including the ratio of joint reverse drive torque to the maximum output torque, the torque control bandwidth and the correlation between motor current and output torque; the device comprises a driving mechanism, a loading mechanism and a test platform with a sliding assembly, the driving mechanism is connected with a joint input end through a coupling, and the loading mechanism is connected with an output end. According to the invention, a quantitative evaluation system of transmission transparency is established, a modular device capable of separably testing joint motor reverse drive torque (distinguishing charged / uncharged states) and speed reducer forward / reverse drive efficiency is designed, and accurate data support is provided for joint performance optimization.

The invention discloses an automatic measuring device and measuring method for dynamic and static friction torques of medium and large-sized bearings, and belongs to the technical field of bearing detection.The device comprises a bearing assembly, a moving plate is arranged on the bearing assembly, a rotating motor is connected to the bottom of the bearing assembly, and a driving shaft system is arranged on an output shaft of the rotating motor; the top end of the driving shaft system is provided with an inner ring fixing mandrel, the upper surface of the moving plate is connected with a torque sensor through an upper fixing frame, the bottom end of the torque sensor is provided with a measuring shaft system, the bottom end of the measuring shaft system is sleeved with a center adjusting assembly through two guide columns, the bottom of the center adjusting assembly is provided with an outer ring loading tool, and the outer ring loading tool is provided with an inner ring. Under the cooperation of the structure, not only can the dynamic friction torque be measured, but also the multi-point static friction torque can be automatically measured, more comprehensive bearing friction characteristic data are provided, and optimization of bearing design and model selection is facilitated.

The invention discloses a device and a method for testing transmission efficiency and service life of a miniature lead screw pair, and belongs to the technical field of lead screw pair testing. The device comprises a control system, a base, and a first servo motor, a lead screw pair fixing mechanism, a test workbench, a loading workbench and a second servo motor which are sequentially arranged on the base; the lead screw pair fixing mechanism is used for installing a to-be-tested lead screw pair, one end of the lead screw pair fixing mechanism is connected with the first servo motor through the main shaft unit, and the other end of the lead screw pair fixing mechanism is connected with one end of the test workbench. The test workbench is slidably located on the linear guide rail pair of the base, and the other end of the test workbench is connected with one end of the loading workbench through a force sensor and a force application balance rod; the loading workbench is slidably located on the linear guide rail pair, and the other end of the loading workbench is connected with the second servo motor through the loading lead screw pair. The control system is used for controlling the first servo motor and the second servo motor. The problems of installation of the miniature lead screw pair and testing in a high-speed state are solved.

The invention provides a vehicle simulation test device and a vehicle simulation test method. The device comprises a first base, a second base and four dynamometers, the dynamometer comprises a lifting assembly, and a steering assembly, a roll assembly and a roller assembly which are arranged on the lifting assembly. The lifting assembly is used for lifting the steering assembly, the steering assembly is used for rotating the roll assembly, and the roll assembly is used for the roll roller assembly. Through the lifting assemblies which are arranged on the left side and the right side of the tested vehicle and have different heights and the side inclination angles of the side inclination assemblies which are adaptively adjusted according to the angles of the lifting assemblies on the left side and the right side of the tested vehicle, the driving conditions of the vehicle at the transverse gradient and wheel side inclination are simulated. Through the lifting assemblies which are arranged at the front end and the rear end of the tested vehicle and have different heights, the driving condition of the vehicle at the longitudinal slope is simulated; the roller assembly is driven through the steering assembly, and the driving condition of vehicle steering is simulated.

The invention provides a gearbox variable working condition mechanical loss torque efficiency correction test method based on a neural network. The method comprises the following steps: S1, determining a to-be-tested gearbox and basic parameters; s2, building a gearbox variable working condition test system; s3, acquiring basic operation data of the gearbox; s4, calculating theoretical mechanical loss torque and efficiency of the gear box; s5, the actually-measured mechanical loss torque and efficiency of the gearbox are collected, and an error data set is generated; s6, constructing and training an error correction model fusing the back propagation neural network and support vector regression; s7, performing mechanical loss torque and efficiency correction based on the fusion model; and S8, verification and feedback optimization of a correction result. According to the method, on the basis of all-working-condition data, the defect of a single model is overcome through double-algorithm fusion, precise correction of the mechanical loss torque and efficiency of the gearbox under the variable working conditions is achieved, and reliable data support is provided for gearbox design optimization, working condition matching and energy efficiency evaluation.

The invention discloses a pruning auxiliary device for landscape landscaping, and relates to the technical field of landscaping pruning, the pruning auxiliary device comprises a moving mechanism, the top of the moving mechanism is fixedly provided with a pruning mechanism, and the top of the moving mechanism is fixedly provided with a crushing mechanism; the trimming mechanism comprises an electric turntable I; according to the device, a gear transmission system is driven by a motor, intelligent clamping of branches is achieved, metal microneedles are accurately inserted into the branches, the branches are effectively fixed, damage to barks due to shaking or sliding is reduced, meanwhile, scattering of the pruned branches is avoided, and by means of a pressure sensor and a distance measuring sensor after clamping, the device is convenient to use and high in practicability. The diameter of a branch can be detected in real time, the rotating speed and torque of the motor can be automatically adjusted according to data, the optimal matching state between a pruning knife and the branch in the pruning process is ensured through the self-adaptive adjusting capacity, the pruning efficiency and quality are improved, meanwhile, excessive abrasion of a cutter due to long-time high-load operation is avoided, and the service life of the pruning knife is prolonged. And the service life of the cutter is prolonged.

The invention relates to the technical field of sensors, and provides a six-dimensional force and torque force sensor and a preparation method thereof.The six-dimensional force sensor is of a disc-shaped structure and comprises an outer supporting ring, an inner mass block and eight elastic beams connected between the outer supporting ring and the inner mass block; wherein the eight elastic beams comprise a first elastic beam and a second elastic beam which are alternately arranged around the inner mass block, the first elastic beam is a straight beam, the second elastic beam is a special-shaped beam, and a strain gauge preset on the main surface of each elastic beam responds to the strain of the elastic beam to generate a measurement signal; and the force and / or the torque applied to the inner mass block or the outer support ring can be determined according to the measurement signal. Due to the fact that the different elastic beams are different in shape and structure, the strain gauges are preset on the elastic beams of different types and positions, and the bridging mode is set, the output of each Wheatstone bridge is only sensitive to the force or the moment of force in the changed direction and is not sensitive to the force or the moment of force applied in other directions, and the decoupling capacity of the sensor structure is improved to the maximum degree.

A combined three-dimensional force / torque sensor. A plurality of discrete one-dimensional force sensors (11, 12, 13, 14) are used to measure force components, and a conduction flange (2) is used to transmit an external force. The combined design effectively reduces inter-dimensional coupling and has a simple structure. The lateral torque and the axial pressure are monitored in a differential form and a summation form, thereby effectively improving the sensitivity and measurement accuracy of the sensor. Further disclosed is a miniature calibration system established by using the combined three-dimensional force / torque sensor. The calibration system has a small size and a simple structure, is easy to assemble and convenient to carry and transfer, and is capable of on-site calibration.

The invention relates to a hull total longitudinal bending moment monitoring device and method, a terminal and a medium, belongs to the field of structural health monitoring, and aims to solve the problems of high cost and low precision of existing bending moment monitoring. The long baseline sensor is fixedly installed on a to-be-monitored point of a hull bottom structure, the long baseline sensor is in data connection with the data receiving processor, and the data receiving processor and the terminal are in data connection with the medium. The device can accurately simulate the working condition, improves the measurement precision and stability of the sensor, is simple and convenient to operate, improves the working efficiency, is flexible in structure, and has multiple driving modes. According to the method, long-distance bending moment recognition is converted into short-distance displacement recognition, long-baseline deck bending moment is converted into short-baseline displacement measurement through a high-rigidity iron pipe and a universal joint, the bending moment can be recognized based on local displacement information by constructing a transfer matrix, and compared with a traditional technology, the method is simple and efficient in algorithm, high in measurement precision, high in interference resistance, convenient to install and high in practicability. The cost is greatly reduced; and the maintenance is simple.

A magnetostrictive torque sensor for measuring torque that is applied to a rotating shaft having magnetostrictive characteristics, includes a flexible substrate having a plate-shaped base material made of a flexible dielectric material and a plurality of detection coils formed by conductor patterns on front and back sides of the base material, and a measurement unit that measures the torque by the change in inductance of the plurality of detection coils due to the change in magnetic permeability of the rotating shaft, wherein the plurality of detection coils includes a first detection coil comprising a first coil winding including a first inclined portion inclined to one side with respect to an axial direction of the rotating shaft, and a second detection coil comprising a second coil winding including a second inclined portion inclined to the other side with respect to the axial direction of the rotating shaft, wherein the flexible substrate includes parallel extending portions where the first coil winding and the second coil winding extend parallel to sandwich the substrate, and wherein a centerline of the first coil winding and a centerline of the second coil winding are misaligned in a direction perpendicular to their respective centerlines in the parallel extending portions.

A power control actuator of the present disclosure includes: an output-side bearing provided on a side on which a torque is to be outputted; a speed reducer including an output shaft; and a torque sensor that detects a torque associated with rotation of the output shaft, in which an outer peripheral surface of the torque sensor and an inner peripheral surface of the output-side bearing constitute a spigot joint structure, an inner peripheral surface of the torque sensor and an outer peripheral surface of the output shaft of the speed reducer constitute a spigot joint structure, and the output-side bearing, the output shaft of the speed reducer, and the torque sensor have a coaxial structure.

The utility model discloses a self-adaptive calibration type dynamic torque measurement sensor, and relates to the technical field of torque measurement sensors. The torque sensor comprises a sensor body, wherein the sensor body comprises a shell, a connecting seat integrally arranged at the middle position of the peripheral side of the shell, a central shaft movably arranged at the end part of the shell, a torque sensing strain gauge fixed at the peripheral side of the central shaft, and a sensing element arranged in the shell; the sensing element comprises a self-adaptive calibration module used for automatically adjusting measurement parameters according to environmental changes; the signal conditioning circuit module is used for processing the electric signal output by the sensing element; the data processing module is used for calculating an actual torque value; and the communication interface is used for exchanging data with external equipment. According to the utility model, the self-adaptive calibration module is arranged to monitor temperature and vibration changes in real time, and parameters of the signal conditioning circuit module are automatically adjusted, so that the torque measurement precision in a complex environment is effectively improved.

The utility model relates to a center shaft torque sensor with a limiting function, and belongs to the field of power-assisted bicycles. The device comprises a middle shaft, a left bearing seat, a bearing, a protective sleeve, a right five-way seat, an elastic body, a needle bearing and a strain gauge, the two ends of the protective sleeve are connected with the left bearing seat and the right five-way seat respectively, the bearing is installed between the left bearing seat and the middle shaft, the needle bearing is installed between the elastic body and the middle shaft, and the strain gauge is installed between the elastic body and the middle shaft. The elastic body is located in the right five-way seat, the strain gauge is pasted on the elastic body, two ends of the elastic body are respectively a fixed end and a free end, and the elastic body is structurally characterized in that the fixed end of the elastic body is fixed with the right five-way seat, the free end of the elastic body is provided with a limiting convex rib, and the limiting convex rib and the elastic body are of an integrated structure.

The utility model provides a planetary gear motor load torque test device which is characterized in that an installation platform is horizontally fixed on a first installation support, a second installation support is erected above the installation platform, a carrier assembly, a detector assembly and a parameter adjustment assembly are all fixed on the installation platform, and a master control box is fixed above the second installation support. The sliding table is fixed above the installation platform in the front-back direction and corresponds to the front side of the detector assembly, the lower end of the sliding block is in sliding connection with the sliding table, the first connecting frame is fixed to the installation platform and corresponds to the front side of the sliding table, the front end and the rear end of the reset spring are fixed to the sliding block and the first connecting frame respectively, and the carrier body is fixed above the sliding block. The elastic telescopic end of the elastic telescopic piece is installed on the carrier body, the front end of the elastic telescopic piece is fixed to the insulation push block, the metal connecting column is fixed to the insulation push block and corresponds to the front side of the carrier body, the limiting component corresponds to the rear side of the sliding block, and the detection efficiency can be effectively improved.

The invention provides a sewing efficiency detection method and system based on sewing machine worker action analysis, a medium and a terminal. The method comprises the following steps of obtaining a motor starting time point and a motor stopping time point of sewing equipment; obtaining a turner sewing image of a time period between the adjacent motor stop time point and the motor start time point; based on the sewing image of the turner, acquiring the action duration of each sewing action executed by the turner, wherein the sewing actions comprise cutting piece taking, cutting piece sewing, cutting piece arranging and cutting piece placing; and obtaining the sewing efficiency of the lathe worker based on the sewing action and the action duration. According to the sewing efficiency detection method and system based on sewing turner action analysis, the medium and the terminal, the turner sewing efficiency is detected based on action recognition of the sewing turner and action data of the sewing machine, and the method and the system are rapid and efficient.