3219results about "Static/dynamic balance measurement" patented technology

An apparatus is removably attached to lug nuts of a vehicle's wheel assembly for use in determining imbalance forces of the wheel assembly during motion of the vehicle. The apparatus includes a plurality of data collection devices. Each data collection device is removably attachable to one lug nut of the same wheel. Each data collection device includes a single cup-shaped object and a motion measurement sensor. The data collection object is mounted to the vehicle's wheel by fitting the cup-shaped object over the lug nut of the wheel. The motion measurement sensor measures parameters that are used for calculating the imbalance forces during motion of the vehicle. A processor receives the measured parameters from motion measurement sensors of each of the data collection devices and uses the measured parameters to identify an instantaneous center of rotation of the wheel assembly for use in determining imbalance forces of the wheel assembly of the vehicle during motion of the vehicle.

The invention discloses a rotor surface magnetic field characteristic real-time monitoring and damage assessment system and method, and relates to the technical field of damage assessment. According to the method, a rotor surface magnetic field is monitored in real time under different rotating speed conditions, detailed magnetic field change data information is collected, the monitoring means can dynamically capture the magnetic field fluctuation condition, and the damage assessment accuracy is improved. According to the method, the damage prediction model is constructed by using the deep learning technology, the relevance between the damage prediction model and the rotating speed of the rotor is analyzed, early detection and classified evaluation of the unbalance condition are ensured, accurate data support is provided for further damage analysis, and accurate evaluation of the surface damage of the rotor is realized by using the deep learning technology to construct the damage prediction model and combining the unbalance type and the magnetic field change data. Meanwhile, the damage evaluation index is subjected to linear normalization processing, the influence between different data dimensions can be eliminated, and the evaluation result is more stable and reliable. And whether the damage state of the rotor surface is abnormal or not is judged in time by comparing and analyzing the damage evaluation index and a threshold value.

The invention relates to the technical field of detection structures, in particular to a machine tool spindle dynamic balance testing device which comprises an eccentric vibration unit and an amplitude detection unit, the eccentric vibration unit can drive a shaft body to vibrate, and the amplitude detection unit can detect the vibration amplitude of the shaft body; the eccentric vibration unit comprises a supporting ring installed on the shaft body and a rotating body eccentrically rotating on the supporting ring. The shaft body is made to be static, the shaft body is driven to vibrate through rotation vibration of the eccentric vibration unit, and therefore the amplitude of the shaft body can be increased under the condition that the center of gravity of the shaft body deviates, and whether dynamic balance of the shaft body is qualified or not can be judged by detecting whether the amplitude meets the requirement or not. Therefore, the danger in the operation process is greatly reduced, and a safer, simpler, more convenient and more efficient dynamic balance test solution for the machine tool spindle can be provided.

The invention discloses an automatic quality-supplementing correction method and system for the unbalance amount of a fan, and the method comprises the following steps: collecting geometric parameters and material characteristics in a static state of the fan, and constructing a mechanical distribution model of the fan; the method comprises the following steps: collecting vibration signals and airflow characteristics in real time in a dynamic operation state, calculating the amount of unbalance in operation and decomposing the amount of unbalance into a primary component and a secondary component; on the basis of the unbalance prediction trend, determining a quality supplementing range, carrying out multi-point quality supplementing operation through a dispensing technology, and monitoring a quality supplementing effect by using an optical fiber sensor; and if the residual unbalance amount after quality supplementation still exceeds the standard, real-time compensation adjustment is carried out through the electromagnetic torque regulation and control module. Full-process automatic correction from static state to dynamic state and from quality supplement to fine adjustment is achieved, the method has the advantages of being real-time, accurate and intelligent, vibration and noise in the fan operation process can be effectively reduced, the operation stability of equipment is improved, and the service life of the equipment is prolonged.

The invention relates to the technical field of mining mechanical equipment, and particularly discloses a mining mechanical equipment anomaly detection system and method. Current signals, voltage signals and vibration signals in the operation process of mining mechanical equipment are obtained; the method comprises the following steps: extracting an equipment operation current-voltage correlation feature vector and a mining mechanical equipment time frequency correlation feature vector, fusing to obtain a mining mechanical equipment anomaly classification feature vector, and obtaining a classification result through a classifier to indicate whether the mining mechanical equipment is abnormal or not, thereby realizing anomaly detection of the mining mechanical equipment.

Detection of trailer dynamic parameters is provided. A vehicle can receive a geometry of a plurality of points of support disposed along a longitudinal axis of the trailer. The vehicle can determine a center of mass of the trailer based on the plurality of points of support and weights bearing down thereupon. The vehicle can bound or otherwise determine, based on the geometry of the plurality of points of support and the center of mass, a moment of inertia of the trailer about at least one of the plurality of points of support. The vehicle can perform a navigational action based on the moment of inertia or center of mass.

A method is provided for detecting vibrational anomalies of a vehicle using a plurality of devices that are removably attachable to the vehicle. One of the devices is removably attachable to a wheel assembly and includes an IMU configured to remotely collect data. At least one of the other devices is not attached to any of the wheel assemblies. Acceleration data is collected from the device that is removably attachable to the wheel assembly. Vibrational data is collected from at least one of the other devices that are not attached to any of the wheel assemblies. The acceleration data is analyzed from the device that is removably attachable to the wheel assembly to determine whether a vibrational anomaly exists in the wheel assembly. The vibrational data from the at least one of the other devices that are not attached to any of the wheel assemblies is analyzed to determine whether a vibrational anomaly exists. The acceleration data that was analyzed from the device that is removably attachable to the wheel assembly is compared to the vibrational data analyzed from the at least one of the other devices that are not attached to any of the wheel assemblies to identify a potential source of vibrational anomaly in the vehicle.

A vehicle component balancing robot apparatus, system and method for on vehicle balancing of one or more of a tire, a wheel, bearings, brake components, and vehicle components that impart vibrations to the vehicle. The apparatus includes a frame arranged so as to connect with the vehicle. A robot of the apparatus moves relative to the frame, and is configured so that the move, relative to the frame, resolves a predetermined location of a tire-wheel assembly relative to a reference frame of the robot. The robot has at least one end effector arranged to interface the tire-wheel assembly and the robot moves the at least one end effector to other predetermined locations on a wheel rim of the tire-wheel assembly, determined based on resolution of the predetermined location of the tire-wheel assembly relative to the reference frame.

An autonomous traverse tire changing bot includes a carriage having a carriage frame with a carriage drive section effecting autonomous traverse of the carriage, along a traverse path, relative to a traverse surface or a floor on which the bot rests, and a bot frame including at least one actuator mounted to the carriage and a bot drive section with a motor defining an actuator degree of freedom, wherein the at least one actuator has an end effector having a tire engagement tool disposed so that articulation of the at least one actuator with the actuator degree of freedom effects engagement contact of the tire engagement tool and a tire mounted on a vehicle, and a controller effects traverse of the bot along the traverse path effecting dynamic positioning of the at least one actuator relative to a variable position of the vehicle with the tire mounted thereon.

The invention relates to the technical field of bearing degradation analysis, and discloses a generator bearing degradation evaluation method and system based on a metal self-repairing technology. The method comprises the following steps: collecting vibration, balance and temperature data of a bearing; extracting balance and wear characteristics, and establishing a degradation index system; injecting a self-repairing material; monitoring a repairing effect, and obtaining improvement data; predicting the health state of the bearing through a memory network; and generating an evaluation report, optimizing a repair strategy, and predicting the residual life. According to the method, the health state of the bearing can be accurately evaluated, personalized optimization of a metal self-repairing material formula is achieved, whole-process monitoring and effect evaluation are conducted on the repairing process, finally, accurate prediction of the remaining service life of the bearing is achieved, and scientificity and efficiency of wind turbine generator bearing maintenance are improved.

A vehicle component balancing robot apparatus, system and method for on vehicle balancing of one or more of a tire, a wheel, bearings, brake components, and vehicle components that impart vibrations to the vehicle. The apparatus includes a frame arranged so as to connect with the vehicle. A robot of the apparatus moves relative to the frame, and is configured so that the move, relative to the frame, resolves a predetermined location of a tire-wheel assembly relative to a reference frame of the robot. The robot has at least one end effector arranged to interface the tire-wheel assembly and the robot moves the at least one end effector to other predetermined locations on a wheel rim of the tire-wheel assembly, determined based on resolution of the predetermined location of the tire-wheel assembly relative to the reference frame.

A powered balancing mobility device that can provide the user the ability to safely navigate expected environments of daily living including the ability to maneuver in confined spaces and to climb curbs, stairs, and other obstacles, and to travel safely and comfortably in vehicles. The mobility device can provide elevated, balanced travel.

A vehicle component balancing robot apparatus, system and method for on vehicle balancing of one or more of a tire, a wheel, bearings, brake components, and vehicle components that impart vibrations to the vehicle. The apparatus includes a frame arranged so as to connect with the vehicle. A robot of the apparatus moves relative to the frame, and is configured so that the move, relative to the frame, resolves a predetermined location of a tire-wheel assembly relative to a reference frame of the robot. The robot has at least one end effector arranged to interface the tire-wheel assembly and the robot moves the at least one end effector to other predetermined locations on a wheel rim of the tire-wheel assembly, determined based on resolution of the predetermined location of the tire-wheel assembly relative to the reference frame.

A mobile robot tool for use in testing balance of a wheel has a pressure plate assembly having a pressure plate member rotatable about the first attachment element. The pressure plate member is driven along a tool operational axis in one direction to cause the pressure plate member to bear against the wheel rim flat. A cone assembly has a cone block rotatable about the second attachment element. The cone block is driven along the axis in the opposite direction to drive it against the rim center bore on the other side of the wheel. The first and the second attachment elements are screwed together to clamp the rim between the core block and the pressure plate ready for conducting a wheel balance test.

The invention discloses a quadruped inspection robot space positioning method and system based on gravity center sensing, and aims to construct a gravity center potential energy field through foot end contact force and body attitude information, form a gravity center disturbance mode in combination with fluctuation spectrum analysis, and reveal a disturbance propagation mechanism. A reverse compensation technology is adopted to generate an anti-disturbance sequence, a foot end force distribution topology is reconstructed, and active disturbance suppression is achieved; a multi-frequency detection wave beam and coherent superposition technology is introduced, an environment hologram is generated, geometric topology is reconstructed, and a high-precision environment sensing system is established; high and low impedance regions are identified through energy density analysis, and an energy optimal path is constructed in combination with double strategies of potential field bypassing and streamline tracking; establishing an oscillation analysis space for path projection simulation, identifying resonance risk points and determining stabilization parameters; finally, a coordinate reference is generated by adopting a quantum entanglement type multi-anchor-point synchronization mechanism, accurate positioning is realized by fusing environmental geometric information, and a technical closed loop from gravity center dynamics analysis to environmental perception navigation is realized.

The invention discloses a tunnel monitoring method and system based on a vibrating wire sensor, and relates to the technical field of tunnel engineering construction safety monitoring, and the method comprises the steps: collecting the vibration frequency data and spatial position coordinates of the vibrating wire sensor in a monitoring region; the method comprises the following steps: calculating a time difference and an energy attenuation ratio between adjacent sensors by extracting spectrum energy density distribution, and constructing a stress wave propagation field; dividing grids in the propagation field to calculate node stress values, generating a stress field distribution cloud picture and extracting a stress concentration area; calculating a gravity center position coordinate change rate and a stress time sequence curve of the stress concentration area, and determining fracture extension parameters; and calculating a surrounding rock bearing capacity attenuation curve based on the parameters, and outputting an early warning signal when the slope exceeds a threshold value. According to the invention, real-time monitoring and early warning of the tunnel surrounding rock instability risk are realized.

The invention relates to the technical field of bumper detection, in particular to an automobile bumper detection method and system, and the system comprises a rigid test bench, a multi-point adjustable impact loading module, a bumper surface deformation monitoring module, and a control and processing module. The to-be-tested automobile bumper is fixed on the test bench according to a preset mode, and the plurality of sensors are arranged based on a preset position; carrying out dynamic and static balance test on the to-be-tested automobile bumper according to the received control instruction, and carrying out corresponding index calculation; on the basis of static and dynamic test indexes, a quantitative report is generated, whether the balance of the bumper structure reaches the standard or not is automatically judged, complex static supporting and dynamic impact working conditions possibly encountered by the bumper on a vehicle can be effectively simulated in an integrated process, the static stability of the overall structure and the coordination under power impact of the bumper can be quantitatively evaluated, and the reliability of the bumper structure is improved. Therefore, the structural safety performance of the bumper can be reflected more truly.

The invention discloses a disc type motor rotor dynamic balance optimization device, and relates to the technical field of motor rotor dynamic balance testing. Comprising a bottom plate and a rotor body, the bottom plate is provided with a test assembly, and the test assembly is provided with a test belt; a support plate is fixedly mounted on the bottom plate, an optimization assembly is arranged in the support plate, and test data of the rotor body are more accurate through the optimization assembly; a detection frame is fixedly installed on the support plate, a detection instrument is arranged on the detection frame, the test assembly comprises two side plates fixedly installed on the bottom plate, and driving motors are fixedly installed on the side plates. According to the disc type motor rotor dynamic balance testing device, the testing assembly and the optimizing assembly are used in cooperation, the stability and adjustability in the testing process are improved, the testing effect can be optimized when the disc type motor rotor is subjected to dynamic balance testing, and the efficiency and accuracy of the disc type motor rotor dynamic balance testing are effectively improved.

The invention relates to the technical field of pump production and detection, and discloses a large-flow flood prevention pump and a pump body detection device thereof.The large-flow flood prevention pump comprises a machine base, a detection table fixedly arranged on the machine base, a pump base fixedly arranged on the detection table, a pump shell fixedly arranged on the pump base, a water inlet formed in one side of the pump shell, a vertical frame fixedly arranged on the machine base, and a third air cylinder fixedly arranged on the vertical frame; a cylinder is fixedly connected to one side of the mounting plate; movable rods are symmetrically arranged on the cylinder in a sliding manner; pressure springs are arranged on the movable rods; one ends of the pressure springs are connected with the inner wall of the cylinder; and the other end is provided with an inclined block. According to the pump body detection device of the large-flow flood prevention pump, impact detection is conducted through the moving rod located in the pump shell, so that the impact resistance in the pump shell is monitored, the situation that in the actual flood prevention process, the inner wall of the pump shell is impacted by foreign matter and damaged is avoided, and the product strength of the flood prevention pump is improved.

The invention discloses a balancing device and method for monitoring walking of a hanging basket, and relates to the technical field of constructional engineering construction.The balancing device comprises the hanging basket, walking rails and a double-shaft inclination sensor are arranged on the two sides of the hanging basket, and the double-shaft inclination sensor is installed at a node of the hanging basket and used for measuring the inclination angle of the hanging basket in the two perpendicular directions in real time; the pressure sensors are installed at walking wheels or supporting points of the hanging basket and used for measuring pressure borne by all the points, and the displacement sensors are installed beside walking rails on the two sides of the hanging basket and used for monitoring transverse displacement and longitudinal displacement of the hanging basket relative to the walking rails; according to the balancing device and method for monitoring the walking of the hanging basket, the monitoring capacity of the balance of the hanging basket is remarkably improved, accurate control in the construction process is guaranteed, the unbalanced state of the hanging basket is effectively prevented, and the construction risk is reduced.

The invention discloses a superconductive synchronous phase modifier rotor adaptive dynamic balance compensation device and method, and relates to the technical field of superconductive synchronous phase modifiers, the superconductive synchronous phase modifier rotor adaptive dynamic balance compensation device comprises a rotor, the rotor is fixedly connected with a rotating shaft, and a plurality of vibration signal capture sensors are uniformly distributed on the side surface of the rotor and used for monitoring the vibration condition of each point in the circumferential direction of the rotor in real time; a gravity center compensation mechanism is further installed on the side face of the rotor and used for correcting the dynamic unbalance situation generated in the rotating process of the rotor in real time. When a certain vibration signal capture sensor on a rotor monitors that a dynamic unbalance condition occurs at a corresponding point, a sealing push plate in a balance box body at a corresponding position pushes out balance liquid stored in the balance box body through a communicating pipe, and the sealing push plates in the oppositely arranged balance box bodies move to a position far away from the communicating pipe; and the spaces, communicated with the communicating pipes, in the opposite balancing box bodies are filled with the pushed balancing liquid, so that the adjustment and compensation of the gravity center distribution of the rotor are completed.

The invention discloses an antiskid chain dynamic balance detection device, and relates to the technical field of balance detection, and the device comprises a frame body, one side of the frame body is connected with an installation frame through a fixing plate, one side of the installation frame is fixedly connected with a fixing disc, a driving mechanism installed in the installation frame, and two detection assemblies and an adjusting assembly which are installed at one side of the fixing disc. The two detection assemblies each comprise supporting rods which are fixedly connected to one side of the fixed disc and are different in length, an inner groove is formed in each supporting rod, a sliding groove is formed in one side of each supporting rod, a limiting groove is formed in the inner wall of one side of each inner groove, an abutting block is slidably connected to the inner wall of each inner groove, and the abutting blocks are slidably connected with the limiting grooves through the limiting blocks; the inner wall of the inner groove is slidably connected with the abutting piece, one side of the abutting piece is connected with the mark plate, the abutting piece abuts against the abutting block, when the wheel rotates, the balance state of the antiskid chain can be visually judged by observing the position change of the mark plate, and if the two mark plates are kept straight, the antiskid chain is balanced.

The invention discloses a system and a method for measuring the weight center of gravity of an unmanned helicopter, belongs to the technical field of unmanned aerial vehicles, and is used for solving the problems of low measurement precision and limited measurement scene of the system for measuring the weight center of gravity of the unmanned helicopter. The measuring system comprises a weight measuring unit, a horizontal measuring unit, a lifting unit and a distance measuring unit. The weight measuring unit comprises four weight measuring assemblies; the horizontal measuring unit comprises a first bevel protractor and a second bevel protractor, the first bevel protractor and the second bevel protractor are located on a main shaft of the unmanned helicopter, the distance measuring unit comprises a horizontal laser instrument and a laser centering tool, the laser centering tool is fixed on the main shaft of the unmanned helicopter, and the laser centering tool comprises an inclined laser centering line. The center line of the laser pair and the center line of the spindle are coplanar. According to the measuring system and the measuring method, the position of the weight gravity center of the unmanned helicopter measured by a four-point weighing method in the horizontal direction can be improved, and testing of different helicopter types and different sites can be met.

The utility model relates to a molecular pump main shaft dynamic balance testing device, which comprises a platform, supports, a fixed seat, a motor and a driving wheel, the fixed seat is fixedly connected with the platform, the two supports are respectively arranged on the left side and the right side of the fixed seat, the supports are connected with the platform in a sliding mode, and the driving wheel is connected with the fixed seat in a rotating mode. And the motor is fixedly connected with the fixed seat and drives the driving wheel to rotate. According to the utility model, the rotating plate is rotatably connected with the fixed seat, the main shaft is buckled with the rotating plate after being placed, and then the rotating plate is fixed with the fixed seat, so that the main shaft is simple and convenient to mount and take out; for main shafts of the same specification, multiple times of adjustment are not needed, installation of the main shafts and the support can be completed only by adjusting for the first time and then rotating the hook plate to fix the clamping plate and the sliding seat, the main shafts are limited, the operation steps are few, and the efficiency of detecting multiple main shafts of the same specification is improved.

According to the mass center self-balancing chassis system for U-rib weld defect detection and the control method, the problem that when detection equipment moves on a U-rib curved surface, the precision is reduced due to mass center deviation and view field inclination can be solved. The system integrates a Mecanum wheel omni-directional moving unit, four groups of electric telescopic supporting legs, a two-axis holder and an ECU (electronic control unit), and has the innovation point that dynamic mass center balance and posture self-correction are realized through rigid-flexible combined supporting leg design and multi-modal sensing fusion. The ECU adopts an improved Canny algorithm to process the image, extracts a U rib edge point set and fits a reference center; in combination with pressure and tilt angle sensor data, a real-time mass center is solved through a moment balance formula, and then an improved self-adaptive PID algorithm is used for driving the supporting legs to stretch out and draw back, so that the mass center returns to a reference center; the two-axis holder compensates the view field angle according to the inclination angle data to ensure that the view field angle is perpendicular to the weld joint. Through cooperation of a mechanical structure and an algorithm, the system can control centroid offset to be smaller than or equal to 5 mm and view field inclination to be smaller than or equal to 1 degree, the detection stability and precision are remarkably improved, and the algorithm is easy to deploy.

The invention provides a wind turbine generator blade pneumatic unbalance monitoring method and system based on a torque coefficient, and belongs to the technical field of data processing. Real-time operation data of a wind turbine generator under various operation conditions are collected, time sequence correlation processing is carried out on the real-time operation data, and the wind turbine generator blade pneumatic unbalance monitoring method and system based on the torque coefficient are obtained. A torque coefficient time sequence containing continuous timestamp marks and corresponding wind speed fluctuation characteristics are generated, pneumatic deviation analysis is constructed, a theoretical expected value and an actual measurement value of a torque coefficient are dynamically compared, and an initial imbalance index is generated; calling a pre-trained error compensation network to carry out environmental interference factor elimination processing on the initial imbalance index, and outputting a corrected imbalance index after environmental interference elimination; and then, constructing a blade pneumatic state evaluation model based on the result, and generating a blade pneumatic unbalance monitoring result containing an unbalance level and an early warning suggestion. According to the invention, the accuracy of the monitoring result can be improved.

Aspects and implementations of the present disclosure relate, generally, to optimization of autonomous vehicle (AV) technology and, more specifically, to a transfer hub for autonomous trucking operations. In one example, the disclosed techniques include obtaining, at a first time, one or more first images of an outside environment of an AV and shutting down a data processing system of the AV. The techniques further include initiating a starting-up of the data processing system of the AV and obtaining, at a second time, one or more second images of the outside environment of the AV. The techniques further include determining, based on a comparison of the one or more first images to the one or more second images, that the AV has not moved between the first time and the second time and completing the starting-up of the data processing system of the AV.

The invention discloses an automobile transmission shaft dynamic balance detection device, and belongs to the technical field of transmission shaft detection, the automobile transmission shaft dynamic balance detection device comprises a detection table, the detection table is provided with two moving blocks, the moving block on one side is provided with dynamic balance detection equipment, and the equipment passes through a rotating first electric clamping jaw; according to the coaxial positioning mechanism, through transmission cooperation among a first bevel gear, a second bevel gear and a third bevel gear in the coaxial positioning mechanism, when the first bevel gear is driven, the second bevel gear can be driven to rotate, and then the third bevel gear and the first bevel gear rotate in the opposite directions; in the transmission process, the second rotating rod below the driving rod and the first rotating rod below the driving sleeve can rotate, and the rotation of the second rotating rod and the first rotating rod can drive the positioning clamping blocks at the two ends to clamp the two sections, with the universal joint as a grading line, on the transmission shaft, so that horizontal transmission of the transmission shaft is guaranteed, the coaxiality of the universal joint is improved, and interference to middle section detection is reduced.

The invention provides a blade clearance value and imbalance real-time monitoring method and device based on an RTK technology, and relates to the technical field of wind generating set monitoring. The method comprises the following steps: acquiring position coordinates and elevation information of RTK monitoring equipment on the top of a fan cabin and position coordinates and elevation information of RTK monitoring equipment on three blades of a fan by adopting an RTK technology; analyzing the correlation among the clearance distance, the elevation difference and the horizontal distance in the rotating process of the three blades of the fan; according to the mutual relation of the clearance distance, the elevation difference and the horizontal distance, the clearance distance of the three blades of the fan in the rotating process is calculated through a sampling statistics mechanism method; and according to the clearance distance, the balance state among the three blades of the fan is obtained. According to the invention, the clearance distance of the blade at each rotation position and the balance state of the impeller can be monitored in real time.

The present invention relates to a liquid metal bearing dynamic balance correction system and method applied to the field of CT tube technology. The dynamic balance correction system comprises an air circulation system, a liquid metal bearing system, and a test sensor system. The air circulation system comprises a sealed outer cover, an exhaust fan is arranged on the outer wall of the sealed outer cover, one end of the exhaust fan is connected to a gas circulation channel, and the end of the gas circulation channel away from the exhaust fan is connected to the inside of the sealed outer cover. The dynamic balance correction system of the present invention can effectively avoid the problem that the liquid metal in the bearing reacts with oxygen in the atmosphere, causing the viscosity of the liquid metal to change, and then causing the bearing performance to decrease when performing dynamic balance correction on the liquid metal bearing. The dynamic balance correction system can not only perform dynamic balance correction on the rotor, but also perform dynamic balance correction on the final product structure of the rotor and the stator, thereby greatly improving the accuracy and effect of the dynamic balance correction.