232results about "Force sensors" patented technology

The invention discloses a gap-controllable retainer and a frictional resistance measuring method thereof, belongs to the technical field of mechanical equipment manufacturing, and solves the problem that an existing device can only test a retainer with a fixed gap and cannot simulate the influence of dynamic gap change on bearing performance. The retainer capable of controlling the gap comprises a retainer body capable of adjusting the gap between the retainer body and a rolling body, a retainer moving assembly and a gap adjusting part. The gap adjusting part comprises an adjusting motor, an eccentric wheel and a motor fixing frame. According to the retainer capable of controlling the gap, the gap between the retainer and a rolling body can be dynamically adjusted, the retainer can be matched with different types of ball-disc testing machines (rotary type and linear contact type) for friction resistance measurement, the gap between the rolling body and a pocket of the retainer can be flexibly adjusted by adjusting the motor and the eccentric wheel, and the friction resistance of the rolling body is measured. And therefore, the retainer main body can meet the retaining and limiting requirements of different working conditions and different types of bearings, and the performance, the service life and the reliability of the bearings are remarkably improved.

The invention discloses a motor testing device and a calibration method, a testing method and equipment thereof, and relates to the technical field of motor performance tests.A control assembly of the motor testing device is in communication connection with a torsion calibration device under the conditions that the motor testing device is in communication connection with the torsion calibration device, and a test calibration end is in transmission connection with the torsion calibration device; controlling the torque calibration device to output torque to the test calibration end, acquiring a torque value detected by the torque detection piece when the output torque of the torque calibration device reaches target calibration torque, and calibrating the torque detection piece according to a difference value between the detected torque value and the target calibration torque; under the condition that the motor testing device is electrically connected with the to-be-tested motor and the testing calibration end is in transmission connection with the to-be-tested motor, the controllable load part is controlled to output preset load torque to the torsion shaft and output preset electrical parameters to the to-be-tested motor, and torques detected by the torque detection part under different preset electrical parameters are obtained; according to the invention, the precision of motor small torque testing can be improved.

The invention relates to the technical field of vibration monitoring, in particular to a rotating machine vibration protection method and system based on particle swarm optimization, and the method comprises the steps: obtaining a corrected load torque based on a polynomial fitting temperature compensation algorithm in combination with a real-time environment temperature and a sensor output voltage, and synchronously calculating an actually measured vibration amplitude; configuring the number of variational mode decomposition layers according to the real-time rotating speed of the rotor to obtain a preprocessed vibration signal, adjusting the number of independent component analysis iterations according to the load torque, separating the preprocessed vibration signal to obtain independent vibration components, and generating a feature vector; calibrating adaptive resonance theory network parameters based on a particle swarm optimization algorithm, obtaining a normalized feature vector, calculating the similarity with a fault feature template, outputting a diagnosis result, calculating the deviation between an actually measured vibration amplitude and a normal vibration threshold, and performing compensation according to the diagnosis result and the deviation. According to the scheme, the fault diagnosis accuracy of the rotary mechanical vibration protection system is effectively improved through multi-working-condition self-adaptive diagnosis.

Examples include a functionalized compressible nonwoven material (CNM) cushion with a three-dimensional (3D) pressure-varying electrical conductance (PVEC) region. Integrated with the PVEC surface area is a conductive ink printed on thermoplastic film (CPT) single-sided conductance measurement coupling. The CPT single-sided conductance measurement coupling includes, on the thermoplastic film, N pairs of contact pads and N pairs of pad connection traces. The N pairs of contact pads are maintained, by thermoplastic adhesion, in direct electrical contact with the PVEC surface areas. The N pairs of connection traces extend from the N pairs of contact pads to trace terminals. A conductance measuring circuit selectively applies, via the N pairs of connection traces, voltage and a path to ground to the pairs of contact pads, and measures the resulting current.

A method is provided for determining a torque value of a torque applied by an electronic torque wrench that includes a handle, a square drive and a strain gauge. The method includes measuring an angular velocity and a normal acceleration of the handle as the handle is rotated relative to the square drive, and finding a length of a moment arm from the square drive to the handle based on the angular velocity and the normal acceleration. The method includes measuring a bending moment of a rotational force at the strain gauge that is located at a known distance from the handle, the bending moment measured as the rotational force is applied at the handle that produces the torque at the square drive. And the torque value is determined based on the bending moment, the length of the moment arm and the known distance.

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.

An article of apparel and method include a structure configured to enclose a human body part, a pressure sensor array including multiple pressure sensors separately positioned at locations within the structure, wherein each pressure sensor is configured to output a signal indicative of an amount of pressure being exerted on the pressure sensor by an external mechanical force, an electronic display, and a controller. The controller is configured to receive signals from the pressure sensors and, based on a sequence and a timing of the signals as received, determine a command related to a function of a device. The electronic display is configured to display information related to the function.

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 discloses a bearing starting friction torque measuring system and a measuring method thereof. The system comprises a machine table and a bearing tool. The machine table is provided with a pre-load device and a friction torque measuring device. The bearing tool can be connected to the pre-load device. The friction torque measuring device comprises a bearing driving turntable and a torque measuring device. The bearing driving turntable is provided with a tool mounting mechanism. The bearing tool after pre-load can be clamped on the tool mounting mechanism. The torque measuring device can be connected to the tool mounting mechanism. The application clamps and positions the bearing product to be measured by the bearing tool. The pre-load loading operation of the bearing can be completed on the pre-load device. The working condition of the bearing is simulated. The bearing tool after pre-load can be mounted and fixed on the tool mounting mechanism. The relative movement of the inner and outer rings of the bearing is formed to realize the measurement of the friction torque. The application has the advantages of simple operation and convenient detection and can meet the requirement of accurately measuring the bearing starting friction torque data in the laboratory.

The application provides a rolling bearing friction torque measuring device, and belongs to the technical field of aero-engine and bearing testing. The measuring device is used for measuring the friction torque of a rolling bearing to be measured. The measuring device comprises a bearing seat used for fixing the rolling bearing to be measured, two groups of tension rod assemblies used for loading and measuring the load size of the rolling bearing to be measured, a cross beam connected to the other end of the tension rod assemblies, a bearing adapter assembly used for connecting the tension rod assemblies, the bearing seat and the cross beam, and a guide assembly used for controlling the up-and-down movement of the cross beam. The measuring device solves the problem of measuring the friction torque of a high-speed rolling bearing in the working state of an aero-engine. The highest rotating speed of the high-speed rolling bearing to be measured can reach 10000r / min.

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.

A mobile apparatus that is automated to measure controlled and applied forces and moments to sport surfaces allowing for performance and safety assessment of athletic apparel and athletic surfaces, such as natural or artificial turf. The apparatus is capable of using not only shear and compressive forces, but also rotational moments, and all prescribed forces and moments in combination at the same or different times. The apparatus and related system can link these forces and moments together and combine them to more closely mimic behaviors of a human foot during an athletic movement, thereby applying and measuring interactions between all forces and moments at the same or different times.

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 invention relates to the technical field of antenna automatic testing, and discloses a Ka phased-array antenna thermal vacuum test automatic testing system which comprises a supporting frame, a thermal vacuum box is fixedly connected to the middle side of the top of the supporting frame, a temperature control device is installed in the thermal vacuum box, and a vacuum mechanism is arranged on the outer side of the thermal vacuum box. A base is fixedly connected to the inner bottom wall of the thermal vacuum box, two electric guide rails are arranged on the top of the base, a sliding seat is arranged on the outer sides of the electric guide rails, and a fixing mechanism is arranged on the top of the sliding seat. According to the invention, the plugging mechanism is arranged, the plugging mechanism comprises the connecting seat driven by the electric push rod and can drive the plurality of joints to automatically move towards the interface of the phased-array antenna main body and complete plugging, the traditional manual wiring operation is replaced, the connection process in the test preparation stage is automated, the time consumption caused by manual operation is shortened, and the test efficiency is improved. The preparation efficiency of a single test is improved, and the large-scale test of the antenna becomes possible.

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.

The present invention relates to a method and an apparatus for estimating operation of an industrial roller and / or a felt of a board or paper machine. Support structures of the industrial roller are attached to a frame by a plurality of fastening means. Two or more fastening means are or are in mechanical contact with strain measuring devices, each of said strain measuring devices comprising electrical circuitry for providing an electrical signal representing strain on the respective strain measuring device. Electrical signals provided by said electrical circuitries are obtained, which electrical signals represent strain on each of the plurality of strain measuring means during operation of the paper or board machine. Support reactions of the industrial roller are defined on basis of said samples and operation of the industrial roller and / or the felt is estimated based on said determined support reactions.

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 present invention relates to the technical field of sunshade roller processing, specifically a multifunctional automobile sunroof sunshade roller processing integrated machine, comprising: a lower frame, an upper frame, which is arranged on the top of the lower frame, a laser machine, which is arranged below the upper frame, a rotating mechanism, which is arranged on the top of the lower frame, a fixing mechanism, which is arranged on one side of the rotating mechanism, a embossing mechanism, which is arranged above the fixing mechanism, and a testing mechanism, which is arranged on one side of the fixing mechanism; the beneficial effects are: by adjusting the movable plate to an appropriate position, opening the cylinder three, driving the clamping plate to clamp and fix the rolling curtain shaft, when the clamping plate fixes the rolling curtain shaft, the rolling curtain shaft squeezes the movable plate to move, the movable plate drives the support rod to move, the support rod pushes the hinge rod to rotate, the hinge rod squeezes the spring, and at the same time the other end of the hinge rod drives the hinge block two and the arc plate to rotate to squeeze and fix the rolling curtain shaft, the arc plate and the clamping plate jointly fix the rolling curtain shaft, ensuring that the position of the rolling curtain shaft is not easily offset during processing, thereby improving the processing quality.

The invention relates to the technical field of torque monitoring, in particular to a torque monitoring method and system for pipe bending machine machining. In a neighborhood range of a real-time moment, according to torque data distribution at different moments, whether the real-time moment is a torque distortion moment is judged; if it is judged that the real-time moment is the torque distortion moment, the current torque synchronism in the neighborhood range of the real-time moment is obtained according to the change correlation between the current data and the torque data in the neighborhood range of the real-time moment; according to the distribution of the temperature data and the current torque synchronism at different moments in the neighborhood range between the real-time moment and the previous moment, the heat loss amount of the motor in the neighborhood range of the real-time moment is obtained; and in combination with a preset motor torque constant, a torque data compensation final value at a real-time moment is obtained. According to the method, the torque compensation condition during torque distortion is obtained by accurately analyzing the change relation between the current torque, and the accuracy of torque monitoring is improved.

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.

The application discloses a kind of steam turbine bearing inner bearing bush tight force detection mechanism and detection method, including base, the shorter side of the base one side is equipped with support plate, the center of the support plate and close to the one side of base is equipped with bearing inner shaft fixed extrusion mechanism, the both sides of the bearing inner shaft fixed extrusion mechanism and located on support plate is equipped with bearing outer shaft extrusion mechanism, the top of the bearing inner circumference frame fixed mechanism is equipped with detection mechanism for detecting bearing, by mechanical intelligent detection instead of manual detection, so that its not only greatly improve the effect of detection, and the efficiency of detection is greatly improved, higher accuracy.

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 present application relates to the technical field of torque monitoring, in particular to a torque monitoring method and system for pipe bending machine processing. In the neighborhood range of real-time time, whether the real-time time is a torque distortion time is judged according to the torque data distribution at different times; if the real-time time is judged as a torque distortion time, the current torque synchronism in the neighborhood range of the real-time time is obtained according to the change correlation between the current data and the torque data in the neighborhood range of the real-time time; the motor heat loss amount in the neighborhood range of the real-time time is obtained according to the distribution of the temperature data and the current torque synchronism at different times between the real-time time and the previous time; the torque data compensation final value of the real-time time is obtained in combination with the preset motor torque constant. The present application can accurately analyze the change relation between the current and the torque, obtain the torque compensation condition at the torque distortion time, and improve the accuracy of torque monitoring.

This invention discloses an automatic detection device for the torque of a tunnel boring machine (TBM) cutterhead. The device includes a tray assembly for supporting and rotating the cutterhead shaft, a drive mechanism for rotating the tray assembly, and a torque measuring instrument for measuring the rotational torque of the cutterhead shaft between the drive mechanism and the tray assembly. A clamping mechanism is also provided on the side of the TBM cutterhead to press and fix its cutter ring, preventing the ring from rotating. The invention also discloses a detection method, including placing the TBM cutterhead shaft and pressing the cutter ring, then activating the drive mechanism to rotate the cutterhead shaft and measuring the starting torque. This invention has advantages such as high automation, high detection efficiency, low labor intensity, high detection accuracy, and good versatility.

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.