111results about "Force sensors" patented technology

The present invention relates to a harmonic reducer having a load measuring unit, comprising: a wave generator having a cam plate portion having a wave surface; a flex bearing into which the cam plate portion of the wave generator is fitted and coupled; a flex spline provided outside the flex bearing and having an annular boss portion; a circular spline provided outside the flex spline and having an internal gear meshing with an external gear of the flex spline; a first body coupled to the circular spline; and a second body rotatably provided on the first body by means of a support bearing, wherein the boss portion is coupled to the second body by a plurality of second coupling bolts, and the harmonic reducer further comprises a load measuring unit coupled together by fastening of the second coupling bolts, and the load measuring unit includes a ring-shaped load sensing sensor, and the second coupling bolts are fastened by passing through the load sensing sensor.

A linear actuator with a force sensing mechanism comprises: a housing body (10) with a mounting component (11); a transmission mechanism (20) connected to the housing body (10) and comprising a constraint component (21); an elastic body (30) arranged between the mounting component (11) and the constraint component (21); and a Hall sensor set (40) arranged between the mounting component (11) and the constraint component (21); wherein, when a force applied to the transmission mechanism (20) is changed, a relative displacement is generated between the constraint component (21) and the mounting component (11), and thus an output signal is generated by the Hall sensor set (40) due to the displacement.Accordingly, benefits are provided such as preventing equipment damage due to impacts and detecting whether a patient is in a bedridden or unconscious state at a desired time.

The application discloses a kind of wind-induced vortex-induced vibration generator magnetic restoring couple moment testing device, including swing angle drive and limiting system, measurement system, magnetic restoring couple moment generation and transmission system.Swing angle drive and limiting system include swing angle limiting disc, swing angle drive disc, swing angle positioning pin.Swing angle drive disc is rotated under the drive of driving handle, around swing angle limiting disc rotating shaft, and drive torque instrument, swing shaft and swing permanent magnet to rotate around swing angle limiting disc rotating shaft with the same angular velocity.Swing permanent magnet generates magnetic restoring couple moment under the action of other two fixed permanent magnets, and the size of magnetic restoring couple moment is measured by swing shaft transmission to torque instrument, while laser ranging sensor measures the swing distance of swing shaft, and the change relationship between magnetic restoring couple moment and swing angle can be obtained after converting into swing angle.The application has simple structure, stable and reliable work, and has very important engineering application value.

The application provides a kind of friction torque measuring tool of centripetal roller bearing under eccentric load state, including motor, sensor and test shaft, the test shaft is arranged on the inner ring of the bearing to be measured, the spline part is provided at one end of test shaft, the motor and sensor are sequentially connected at spline part, it further includes mounting seat and limiting seat, the mounting seat is formed by assembling, and mounting seat can be loaded in the outer ring of the bearing to be measured, the other end of test shaft is rotatably provided with extension, the end of extension is used to connect the load of loading piece, and extension is slidably connected on limiting seat, and limiting seat forms anti-rotation cooperation with limiting seat. In view of the deficiency of prior art, the application provides a kind of friction torque measuring tool of centripetal roller bearing under eccentric load state, which is simple to operate and stable in measurement.

The invention provides a plasma propulsion dynamic torque measuring method, a plasma propulsion dynamic torque measuring device and electronic equipment, and relates to the field of plasma propulsion. Measuring first time-varying data of fluorescence intensity distribution in the beam of the thruster along with time and second time-varying data of plasma luminescence intensity of a space point in the beam along with time; adjusting different laser wavelengths and scanning fluorescence signals under different laser wavelengths, and obtaining a fluorescence intensity curve corresponding to the laser wavelengths through time axis alignment; calculating an ion velocity distribution function of each spatial point at each moment according to a fluorescence intensity curve corresponding to the laser wavelength, and calculating the ion current density; and an ion velocity distribution function in the other vertical direction is measured and synthesized to obtain a comprehensive average ion velocity, the dynamic torque density is calculated based on the comprehensive average ion velocity and the ion current density corresponding to each space point, and the dynamic torque is calculated based on the dynamic torque density.

The invention discloses a torque prediction method suitable for high-viscosity material mixing, and belongs to the field of hydraulic equipment. Rotation speed and pressure drop, temperature and flow in hydraulic power transmission are used as input, torque actually measured by a torque sensor is used as output, accurate prediction of the torque of the hydraulic kneading machine is achieved by training an artificial neural network model, the artificial neural network model is continuously optimized in a machine learning mode, and the prediction precision of the torque of the hydraulic kneading machine is improved. The prediction accuracy is improved, the artificial neural network model has good mobility, and an accurate torque prediction result is provided for the working condition that the torque sensor cannot be installed. The method is not limited by installation conditions and environmental factors of the torque sensor; high-precision torque prediction is realized through multi-working-condition testing, comprehensive data acquisition, redundant information removal, data normalization processing, and establishment and optimization of a feedforward neural network. The constructed artificial neural network model has good mobility and can adapt to different hydraulic mixing devices.

The application discloses a retaining cage with controllable gap and a friction resistance measuring method thereof, and belongs to the technical field of mechanical equipment manufacturing. The retaining cage with controllable gap can dynamically adjust the gap between the retaining cage and rolling bodies, and can cooperate with different types of ball-disc testers (rotary type and linear contact type) to measure the friction resistance. The gap between the rolling bodies and the retaining cage can be flexibly adjusted through the adjusting motor and the eccentric wheel, so that the retaining cage body can adapt to the retaining and limiting requirements of different working conditions and different types of bearings, and the performance, service life and reliability of the bearing are significantly improved.

This application provides a method, apparatus, vehicle, and storage medium for simulating load torque. The method includes: acquiring the base torque of a hand-feel simulation motor currently calculated for the vehicle; calculating a target compensation torque when the vehicle is determined to be on a low-friction surface; and summing the target compensation torque with the base torque to obtain the load torque, so that the hand-feel simulation motor outputs resistance to the steering wheel based on the load torque to simulate driving feel. This method can compensate the base torque by calculating the target compensation torque when the vehicle is on a low-friction surface, reducing the impact of the low-friction surface on the base torque, thereby improving driving comfort and safety.

The invention belongs to the technical field of drilling equipment parameter measurement, and discloses a method for directly measuring the torque of drill pipe tongs, which comprises the following steps: S1, fixing a force transducer on a driven chain wheel shaft for measuring the force F applied on the driven chain wheel shaft; s2, a notched chain wheel of the drill rod clamp is connected to the drill rod buckle in a clamped mode, and the drill rod clamp is started; s3, the torque T on the output shaft of the hydraulic motor is measured; s4, substituting the measured values of F and T into a formula T = 2F * L to obtain L; and S5, reading the value F of the force transducer on the driven chain wheel shaft when the drill pipe clamp is used for measuring the torque T, and substituting F and L into a formula T = 2F * L to obtain T, namely the torque acting on the drill pipe buckle. The torque applied to the drill rod can be rapidly and accurately measured, the measurement mode is simple, and the measurement precision is high.

The application provides a kind of plasma propulsion dynamic torque measurement method, device and electronic equipment, it is related to plasma propulsion field, the method calibrates the calibration relationship of total fluorescent intensity and ion current density of thruster, measures the first time-varying data of fluorescent intensity distribution in the beam current of thruster changes with time and the second time-varying data of plasma luminous intensity of spatial point in the beam current changes with time;Adjust different laser wavelength and scan fluorescent signal under different laser wavelength, obtain the fluorescent intensity curve corresponding to laser wavelength by time axis alignment;According to the fluorescent intensity curve corresponding to laser wavelength, calculate the ion velocity distribution function of each spatial point at each time, calculate ion current density;Measure another vertical direction ion velocity distribution function and synthesis, obtain comprehensive average ion velocity, based on the comprehensive average ion velocity and ion current density corresponding to each spatial point Calculation dynamic torque density and based on dynamic torque density calculation dynamic torque.

A foot presence sensor system for an active article of footwear can include a sensor housing configured to be disposed at or in an insole of the article, and a controller circuit, disposed within the sensor housing, configured to trigger one or more automated functions of the footwear based on a foot presence indication. In an example, the sensor system includes a capacitive sensor configured to sense changes in a capacitance signal in response to proximity of a body. A dielectric member can be provided between the capacitive sensor and the body to enhance an output signal from the sensor.

The application discloses a bearing group friction torque measurement test system, which comprises a bearing platform, a first static pressure support oil cylinder and a second static pressure support oil cylinder are arranged on the upper portion of the bearing platform, support flanges are respectively arranged on the inner sides of the first static pressure support oil cylinder and the second static pressure support oil cylinder, flow guide covers are arranged on the inner sides of the two support flanges, a rotating shaft is arranged on the inner sides of the two support flanges, a measured bearing is fixed between the outer side of the rotating shaft and the support flange, a rotating oil distributor is arranged on the inner side of the rotating shaft, the support shaft of the first static pressure support oil cylinder is connected with the rotating oil distributor, oil holes are arranged on the inner side of the support shaft of the first static pressure support oil cylinder, lubricating oil passes through the oil holes, enters the inner side of the rotating shaft through the rotating oil distributor, and then lubricates the measured bearing through the flow guide covers on the two sides of the rotating shaft. In the application, two measured bearings can be fixed, and the torque condition of a single bearing can be measured.

The application relates to the technical field of vehicle testing, in particular to a testing method and device for the rotating torque of a hub bearing, wherein the method comprises the following steps: collecting a first test result of at least one rotating speed of the hub bearing before durability test under different temperature conditions; then, simulating the actual vehicle state by using preset parameters to control a test vehicle, so as to conduct a durability test on the hub bearing, and collecting a second test result of at least one rotating speed of the hub bearing before durability test under different temperature conditions; and substituting the first test result and the second test result into a preset rotating torque formula to obtain a rotating torque test result of the hub bearing. According to the embodiment of the application, the rotating torque test result of the hub bearing can be obtained by calculating based on the test results before and after the durability test, the test result of the rotating torque of the hub bearing is combined with the test data of different temperatures, the test result is fitted to the actual driving scene, the accuracy and objectivity of the test result are improved, and the design standard of the rotating torque of the hub bearing is improved to reduce the rolling resistance, so that the application is more practical.

The invention relates to a force sensing device. The force sensing device comprises a floating element, a base and an intermediate shear spring connecting the floating element and the base together. An external force applied to the floating element is transmitted to the base via the shear spring. One or more non-contact displacement sensors are disposed below the floating element on the sensor mounting surface with a gap between the floating element and the sensor. When the floating element displaces due to an external force, the sensor measures the amount of displacement of the floating element entering the gap. This enables the measurement of the applied force on the basis of the elastic properties of the shear spring without direct contact. Multiple such force sensing devices can be combined together to form a composite force sensing apparatus, e.g., to simulate fruit and measure the force experienced by the fruit during post-harvest processing.

This invention discloses a method, system, and core drilling rig for detecting the verticality of a core barrel. The method includes the following steps: establishing an attitude angle model of the core barrel; acquiring real-time torque values ​​of the core barrel during drilling; determining the drilling attitude of the core barrel during drilling; and synchronously inputting the acquired real-time torque values ​​of the core barrel into the attitude angle model to obtain the verticality status of the core barrel during drilling. This invention synchronously inputs the real-time torque values ​​of the core barrel into the established attitude angle model and compares and analyzes different drilling attitudes of the core barrel during drilling to obtain the verticality status of the core barrel during drilling. This allows for the acquisition of verticality detection data for the entire drilling process, achieving dynamic detection of the core barrel during drilling and offering the advantage of high detection accuracy.

The invention relates to a numerically-controlled machine tool for drilling production of a positioning shaft of a self-adaptive clamping unmanned aerial vehicle, and belongs to the technical field of machine tool machining of unmanned aerial vehicle parts. The numerically-controlled machine tool for drilling production of the positioning shaft of the self-adaptive clamping unmanned aerial vehicle comprises a machine tool body, a main shaft module, a tool turret module, a feeding and moving module, an auxiliary function module and a control system module, the machine tool body serves as a mounting foundation, and the main shaft module is used for providing cutting power; the main shaft module conducts programmable axial position adjustment on a positioning disc through an electric cylinder, so that an internal supporting point of the positioning module can be dynamically close to different turning ring groove machining parts, the effective overhanging length and the stress state of the unmanned aerial vehicle positioning shaft are actively optimized, the rigidity for resisting radial cutting force is directly enhanced, elastic bending is restrained, and the stability of the unmanned aerial vehicle positioning shaft is improved. According to the method, under the condition that the unmanned aerial vehicle positioning shaft is only locked by a single end, the specific requirement of each machining part for rigidity can be met through the position change of the internal supporting point, clamping is simplified, and the process flexibility is improved.

A method and system for detecting and measuring the braking force of a vehicle's brake system using photonic sensors integrated into brake pads is described. A method for detecting and measuring the clamping force (CF) and / or brake torque (BT) resulting from the operation of a vehicle's friction brake system by detection performed in the brake pads (10) of the brake system is described. The method includes encapsulating at least one optical fiber strain sensor (2) in a casing (9) and incorporating the casing (9) into a respective portion of a friction-sensitive friction material (M) attached to a base plate or platform (11) of the brake pad (10). The shear strain (St-eff) of the casing (9) acting in a tangential reference direction (x) represents the tangential force (Ft) acting on the brake pad (10), and the normal force (Fn-eff) of the casing (9) acting in a normal reference direction (y) represents the normal force (Fn) acting on the brake pad (10). The method includes detecting, by the optical fiber strain sensor 2, a first strain S1 (present at a first location on the casing along a first spatial direction w1) based on both a normal force Fn-eff and a tangential strain St-eff acting on the casing 9 at the first location, and detecting, by the optical fiber strain sensor 2, a second strain (present at a second location on the casing along a second spatial direction w2) based on both the normal force Fn-eff and the tangential strain St-eff acting on the casing 9 at the second location. The method includes generating, by the optical fiber strain sensor 2, a first photonic signal L1 representative of the first detected strain S1 and a second photonic signal L2 representative of the second detected strain S2, and receiving, by an optical reading / interrogation unit 4 optically connected to the optical fiber strain sensor 2, the first photonic signal L1 and the second photonic signal L2. The method ultimately involves determining, by the optical reading / interrogation unit 4, a value of the first strain S1 and a value of the second strain S2, respectively, based on the first received optical signal L1 and the second received optical signal L2, and determining a measurement value of the clamping force CF and / or the brake torque BT based on the determined values ​​of the first strain S1 and the second strain S2.

The invention relates to the field of cable construction technical equipment, in particular to a computer network engineering wiring construction device and system.The computer network engineering wiring construction device is characterized in that an adjusting assembly is arranged on a supporting box and used for adjusting the angle of a supporting shell, and a first pressure sensor and a second pressure sensor are arranged on the supporting shell; the first detection seat and the second detection seat are arranged on the first pressure sensor and the second pressure sensor respectively, the detection roller is rotationally connected with the first detection seat and the second detection seat, the difference value calculation unit is used for calculating the data difference value of the two pressure sensors, and the driving unit is used for driving the adjusting assembly to rotate based on the data difference value; the discharging pipe is arranged on the supporting box body, the pay-off roller is rotationally arranged on the supporting shell and located on one side of the discharging pipe, the driving roller is arranged on one side of the pay-off roller, and the output end of the driving motor is connected with the driving roller. Therefore, the rotation angle of the supporting shell can be adjusted according to the difference value of the two pressure sensors to eliminate the twisting phenomenon of the cable, and the wiring quality is improved.

Methods and apparatus for identifying downhole dynamics in a drilling system are provided. Acceleration-detecting sensors are mounted at multiple locations near to a drill bit, such as at a drill collar. The sensors may be spaced 90° apart along a circumference of the drill collar. The sensors detect acceleration measurements in a plane orthogonal to the drill string's axis of rotation, with respect to a first reference frame that moves with the drill string. The acceleration measurements are received by a processor and processed to determine rotational and revolution positions of the drill string within the wellbore with respect to a static reference frame. Whirl dynamics may, in particular, be determined based on the results in real time.

The invention relates to an automobile air outlet force measuring device, which comprises a rack, a positioning carrier and a pressure sensor, and is characterized in that the rack has a Y-axis direction, an X-axis direction and a Z-axis direction, and is provided with a Y-axis moving assembly, an X-axis moving assembly and a Z-axis moving assembly; the Y-axis moving assembly drives the positioning carrier to move in the Y-axis direction to load an air outlet product, the X-axis moving assembly and the Z-axis moving assembly respectively drive the pressure sensor to move in the X-axis direction and the Z-axis direction, so that the pressure sensor performs stirring force measurement on a part to be subjected to force measurement of the product, and the positioning carrier comprises a carrier plate, a positioning seat, a stirring and twisting position detection sensor and a plurality of material pressing air cylinders; a pressing air cylinder fixes a product through a pressing plate, a moving assembly is accurately controlled through a lead screw and a servo motor, the angle of a pressure sensor can be adjusted through a rotating motor, the equipment is further provided with a laser displacement sensor for detecting the placement of the product, a barcode printer outputs a result, and a PLC, an industrial personal computer and a display screen achieve automatic control and display.

The application provides a torque detection method, system and device of a valve, an electronic device and a storage medium. The method comprises: obtaining detection data of a valve to be detected, the detection data of the valve to be detected being detected by a fiber grating torque sensor installed on a valve stem of the valve to be detected; determining a first torque reference quantity of the valve to be detected based on the detection data and fiber grating torque sensor parameters of the fiber grating torque sensor; obtaining valve stem parameters of the valve stem, and determining a torque of the valve to be detected based on the valve stem parameters and the first torque reference quantity. Through the application, the torque detection accuracy of the valve stem can be effectively improved while ensuring normal operation of the valve stem.

The invention discloses a heavy-load transmission shaft torque monitoring method based on an encoder signal, and relates to the technical field of synchronous shaft torque detection, and the method comprises the steps: carrying out the selection and analysis of a torque detection method; the selection and analysis of the torque detection method comprises transmission shaft torque detection based on strain detection and encoder torque detection based on strain detection; strain and displacement changes caused by cracks are analyzed through a simulation experiment, and comprehensiveness and reliability of the encoder in failure detection are verified. The step of analyzing the strain and displacement change caused by the crack through the simulation experiment comprises the steps of setting the diameter, length and wall thickness of the transmission shaft, and calculating the torsional rigidity according to the elastic modulus, the Poisson's ratio and the size parameters of the shaft; a high-precision encoder is installed on a transmission shaft of the ship lifting machine for an experiment, angle difference is monitored in real time, and reliability and precision under the heavy load condition are verified. The method provided by the invention proves the feasibility of using the encoder to detect the failure of the heavy-load transmission shaft.

A rheometer shaft system includes an output shaft including an axial thrust disk, an upper air bearing surrounding the output shaft located above the axial thrust disk, and a lower air bearing surrounding the output shaft located below the axial thrust disk. An upper gap separates the axial thrust disk of the output shaft and the upper air bearing. A lower gap separates the axial thrust disk of the output shaft and the lower air bearing. An airflow detection system is configured to detect a change in airflow to the upper air bearing and the lower air bearing based on the movement in the axial direction of the output shaft. This change in airflow can be used to monitor normal force applied to the rheometer shaft.

A foot presence sensor system for an active article of footwear can include a sensor housing configured to be disposed at or in an insole of the article, and a controller circuit, disposed within the sensor housing, configured to trigger one or more automated functions of the footwear based on a foot presence indication. In an example, the sensor system includes a capacitive sensor configured to sense changes in a capacitance signal in response to proximity of a body. A dielectric member can be provided between the capacitive sensor and the body to enhance an output signal from the sensor.

This invention discloses a method, system, equipment, and medium for monitoring the operating status of a turboshaft engine. The method converts the gas generator speed and turbine inlet temperature into output torque, calculates the remaining torque for different flight conditions, and displays it on a helicopter. This reduces the parameters the pilot needs to monitor, simplifying the flight status assessment process. Furthermore, the pilot can intuitively understand how much power the engine can still produce, providing accurate reference for subsequent flight operations. In addition, by first fitting a mapping relationship based on a large amount of bench test data and then correcting the mapping relationship using output torque installation loss, a mapping relationship under actual engine installation flight conditions is obtained, which more closely reflects the actual flight conditions and ensures the accuracy of the mapping relationship. Moreover, bench testing is less costly and complex than installation testing, which helps reduce testing complexity and cost.

A cable tension calculation method simultaneously considering the sag, inclination angle and bending stiffness includes: querying basic parameters of a stay cable according to design data and construction data; considering influences of the sag, the inclination angle θ and the bending stiffness EI, to calculate dimensionless parameters γ, ε and λ2; testing an acceleration response of the stay cable by an acceleration sensor, to identify a frequency ω of the acceleration response of the stay cable, further calculating a dimensionless frequency {circumflex over (ω)} of the stay cable and the dimensionless parameters γ, ε and λ2, and substituting the dimensionless frequency {circumflex over (ω)} of the stay cable into a vibration characteristic equation, to establish a function relation between the dimensionless frequency {circumflex over (ω)} and a cable tension H* of the stay cable; and solving a root of the vibration characteristic equation, and identifying the cable tension H* of the stay cable according to the root.

The application belongs to the field of bearing measurement, and particularly relates to a bearing measurement device and a bearing measurement method. In order to reduce the vibration of the bearing during measurement, the application provides a bearing measurement device, which comprises a main shaft, a bearing seat, a loading device and a fixedly arranged stopper, and the bearing seat is connected with a rotation-stopping piece; in the circumferential direction of the bearing seat, the stopper has a stop surface for stop cooperation with the rotation-stopping piece, the stop surface is located on both sides of the rotation-stopping piece, and the stop surfaces on both sides of the rotation-stopping piece are in time gap cooperation with the rotation-stopping piece in the non-rotation direction of the main shaft, so as to limit the rotation of the bearing seat by the stop surface and provide a clearance space for avoiding the axial movement path and the radial movement path of the rotation-stopping piece; the bearing seat is provided with a force sensor for measuring the friction force between the rotation-stopping piece and the stop surface. The application also provides a bearing measurement method using the above bearing measurement device. When the bearing seat vibrates, the two stop surfaces can limit the circumferential rotation or rotation tendency of the rotation-stopping piece, so as to reduce the vibration of the bearing seat.

The invention relates to the technical field of wind power generation equipment, in particular to a shafting torque sensor suitable for a wind driven generator, which comprises a main shell and sealing side plates fixedly mounted on two sides of the main shell, and a static power supply coil is fixedly arranged in the main shell; according to the invention, friction waste heat generated in the operation of the bearing is recovered through an efficient heat pipe system, and is directionally transmitted to the rotating end signal processing module, so that a stable heat source is provided for the rotating end signal processing module in a low-temperature environment; the industrial problems that a fan sensor in an extremely cold area is difficult to start and the precision is reduced are solved, self-circulation utilization of energy is achieved, through the design of the structure of the rotating outer ring cooling cavity and the static flow deflector, strong turbulent flow is generated in the cooling cavity, the efficiency of transmitting bearing friction heat to cooling liquid is greatly improved, and local overheating is avoided. The heat pipes are used, so that efficient, long-distance and directional transmission of heat is achieved.

A method for evaluating an adhesive strength of a separator including manufacturing an electrode-separator composite including an electrode stacked on at least one surface of a separator, and the at least one surface of the separator and a surface of the electrode facing the at least one surface include adhesive surfaces and non-adhesive surfaces, and the adhesive surfaces and the non-adhesive surfaces are alternately disposed; moving the electrode-separator composite; cutting the electrode-separator composite in a direction parallel to the moving direction; attaching measuring rolls respectively to both surfaces of the cut electrode-separator composite; separating the electrode-separator composite by rotating each of the attached measuring rolls and spacing the measuring rolls apart from each other; and measuring a torque generated by the measuring rolls while separating the electrode-separator composite.

A driver socket arranged for installation of a ground reinforcement bolt, wherein the driver socket includes a rotation sensor arranged for measuring rotation of the driver socket 1. The driver socket includes a processing unit configured to receive a signal from the rotation sensor and to derive, based on the signal from the rotation sensor, rotation data related to the number of revolutions the driver socket has been rotated.