219results about How to "Avoid Accuracy Impact" patented technology

The invention discloses a method for remote sensing monitoring and early warning fire in sylvosteppe, belonging to the field of remote sensing technology application. The invention makes full use of the information expressive force of satellite remote sensing data on a large-scale space, comprises fire risk evaluation on the sylvosteppe ecological system in a large-scale range and detection of abnormal high-temperature points in the sylvosteppe on the basis of the remote sensing data, and generates the fire remote sensing monitoring and early warning information for the sylvosteppe in a point-sphere integrated manner by assimilating and processing the detection data (point) on the abnormal high-temperature points and data of fire risk evaluation (sphere), thus providing decisive instruction information for fire protection and fire emergencies of the sylvosteppe. The invention is characterized by comprising four parts of a data pre-treatment unit, an abnormal high-temperature point detection unit, a fire risk evaluation unit and an early warning information processing unit.

The invention relates to an independent celestial navigation method for a Mars capturing section of a deep space probe. The method comprises the following steps of: establishing a state model of the deep space probe according to a circular restrictive four-body track dynamics model; acquiring picture element and picture line information of Mars, Martian satellites and a background fixed star, converting the acquired picture element and picture line information into angle information of the Mars, the Martian satellites and the background fixed star and establishing an angle measuring model of the Mars, a Martian satellite I and a Martian satellite II; and estimating the attitude information of the probe by adopting a q-method and estimating the position and speed of the deep space probe in combination with Unscented Kallman filtering. The method has high estimation accuracy, and is very suitable for independent navigation of Mars capturing. The method belongs to the technical field of aerospace navigation. By adopting the method, high-accuracy navigation parameters can be provided for Mars capturing of the deep space probe, and references can be provided for the design of an independent navigation system of the deep space probe.

The invention discloses a time domain bidirectional iteration-based turbine vane flutter stress forecasting method. The method is characterized in that: a set of bidirectional iteration method for a time domain is designed by taking a vane and a surrounding flow field thereof as a three-dimensional fluid solid coupling system, and the flutter stress of the vane is obtained by alternately solving vane deformation and unsteady flow field. The method comprises the following steps of: setting a structural calculation module, a fluid calculation module, a data conversion module, a flutter stress output module, an initial value calculation module and a bidirectional iteration module in a computer; acquiring static vane deformation and steady flow field serving as an initial value by nonlinear iteration; alternately calling the structural calculation module and the fluid calculation module to propel the whole system on time; transmitting fluid solid boundary information through the data conversion module; and outputting the flutter stress on time history. The method realizes integrated calculation of the vane and the flow field, takes the nonlinearity of the coupling system into consideration, and can allow the observation of the whole flutter development process and forecast the flutter stress of the vane.

The invention relates to a sensorless brushless DC motor commutation deviation fast correction control system and a method. An analytical equation between the bus current difference before and after commutation and commutation deviation is derived according to the bus current fluctuation value before and after commutation. In view of the influence of commutation ripple and motor three-phase winding asymmetry on the accuracy of sampled current during actual bus current sampling, a method for current offset sampling in the same conduction zone is designed. The bus current difference is obtained according to the designed current sampling method, the commutation deviation is calculated based on the analytical equation, and the commutation signal is compensated and corrected in real time. By designing the sensorless motor commutation deviation fast correction control system, the commutation deviation convergence time is reduced greatly, and the commutation precision is improved.

Disclosed is a method for acquiring nuclear fuel assembly resonance parameters. The method includes the following steps: building a commonly-used nuclide multi-group database and a changing curve of resonance peaks along with energy; distinguishing isolated peaks and dense peaks, wherein the interval where the isolated peaks are located is a resonance energy region low energy section with obvious resonance interference, and the interval where the dense peaks are located is a resonance energy region high energy section without obvious resonance interference; solving a subgroup total cross section, a subgroup partial cross section, subgroup probability and corresponding multi-group data coupling in the resonance energy region high energy section by using a subgroup method; coupling calculation of the resonance energy region high energy section and calculation of the resonance energy region low energy section through inter-group scattering from the high energy section to the low energy section, acquiring the resonance parameters of the high energy section, and then calculating a scattering source and a fission source from the high energy section to the low energy section; acquiring a multi-group neutron energy spectrum in a low energy region by using a wavelet expansion method; and merging and continuing the total cross section and the partial cross section by using the multi-group neutron energy spectrum of the resonance region low energy section to acquire the nuclear fuel resonance parameters of the low energy section. By means of the method, resonance parameters of nuclear fuel assemblies with any resonance material composition, any geometry and any quantity of resonance regions can be effectively acquired.

The invention discloses a driver-vehicle classification method and device. The method includes the steps that a training sample set is read; difference within a category and difference among categories of the training sample set are calculated, a difference specific value is calculated, and the difference specific value is the specific value between the difference within the category and difference among categories; the difference specific value is compared with a preset threshold value, and the number of convolution layers of a deep convolution neural network is determined according to the comparison result; the deep convolution neural network is initialized; the initialized deep convolution neural network is trained in combination with the number of the convolution layers, and a deep convolution neural network model is obtained; input images to be tested are classified through the deep convolution neural network model. By means of the method, the problem of improper emphasis on the aspects of the speed and accuracy in the method implementing process generated due to the fact that through a traditional mode, an error number of the convolution layers is set is avoided, and the requirement for balance between the speed and accuracy can be better met.

The invention discloses a high-precision drilling platform for bridge construction, which includes a base, a drill bit, and a motor. One end of the drill bit is fixed to a second screw, and the second screw drives the drill bit through the base to reciprocate up and down; the upper part of the second screw rotates A second baffle is connected, and the second lead screw passes through the second baffle to connect with the motor; the outer side of the second lead screw is meshed with a stabilizing device, and the stabilizing device fixes the second lead screw, and the second lead screw passes through the stabilizing device Up and down reciprocating motion. The high-precision drilling platform for bridge construction solves the problem that the existing bridge construction drilling device cannot accurately control the downward drilling depth of the drill bit, so that the drilled holes cannot reach the expected depth.

The invention provides a method for measuring ocean wave parameters based on sea coherent radar, and relates to a method for measuring ocean wave parameters. The invention aims to solve the problem that the obtained parameter precision is low based on the large calculation complexity of non coherent radar. The method comprises the following steps of: step 1, reconstructing a sea surface wave height field by using the radial velocity of the wave; step 2, performing sub-image selection and standardization on the reconstructed sea surface wave height field sequence; step 3, performing a three-dimensional Fourier transform on the reconstructed sea surface wave height field sub-image sequence to obtain a three-dimensional wave spectrum; step 4, high-pass filtering the three-dimensional wave spectrum to remove noise; step 5, bandpass filtering a three-dimensional wave power spectrum after the noise is removed, again removing the noise, and obtaining a three-dimensional wave spectrum relatedto the ocean wave; step 6, performing frequency dimension integration on the obtained the three-dimensional sea wave spectrum related to the sea waves to obtain a two-dimensional wave direction spectrum; and step 7, obtain the wave parameters according to the two-dimensional wave direction spectrum. The method is used for the field of measuring the sea coherent radar.

The invention discloses a ridge prism cemented component production technology and a fixture thereof and belongs to the technical field of optical component production. The ridge prism cemented component production technology comprises the steps of large surface and third surface machining, fourth surface machining, second surface machining, coating machining, cementing, backrest fixing, ridge surface machining and ridge surface secondary machining. According to the ridge prism cemented component production technology, a large surface, a third surface, a fourth surface and a second surface are frosted and polished in sequence, the surfaces are machined in sequence, and fixation is convenient; besides, the machining precision is high, a machining backrest does not need to be replaced frequently, and the machining efficiency is high; black paint is applied for protection after the large surface and the second surface are coated, and coatings are prevented from being damaged by collisions in the cementing machining process; the third surface is cemented and fixed with the backrest, and the machining consistency of the ridge surfaces is ensured; the ridge surfaces are subjected to secondary machining with a square brick backrest, so that the machining precision of the ridge surfaces is ensured, and the purposes of shortening the machining period, improving the working efficiency and the angle precision, reducing dimension errors and increasing the qualified rate of products are achieved.

The invention provides a method which can be implemented in a laboratory, is simple and feasible to operate and used for detecting the tensile breaking force of polyacrylonitrile-based carbon fiber cloth. The method comprises the following steps: 1, taking a sample, namely, cutting a plurality of warp-direction samples in a direction which serves as a sample length direction and is parallel to the direction of warps, and cutting a plurality of weft samples in a direction which serves as a sample length direction and is parallel to the direction of wefts; 2, treating the samples, namely, respectively intensifying the clamping sections of the wrap samples and the weft samples, uniformly coating an adhesive on the clamping sections of the samples in intensification treatment, putting the samples subjected to the adhesive coating treatment in an experiment environment to adjust the moisture content, and drying the adhesive; and 3, performing tensile experiment, clamping coated parts of the samples by using plate clamps on a testing machine, drawing the test samples at a constant speed until the samples are broken, recording the maximum force exerted when the samples are broken, respectively detecting the wrap samples and the weft samples so as to obtain multiple groups of data, and taking the average values of the data, thereby obtaining the wrap and weft tensile breaking forces of the carbon fiber cloth.

The invention discloses a high-precision online measuring instrument and a measuring method for the strip shape of a plate and strip, and relates to the measurement of the strip shape of a metal plate and strip. The method comprises the following steps of: distributing 3 beams of line laser along the motion direction of the plate and strip; irradiating on the surface, in the width direction, of the plate and strip to form 3 laser irradiation lines, wherein the included angle between the line laser and the horizontal plane is 30 to 60 degrees; shooting the changes of the positions of the laserirradiation lines on the surface of the moving plate and strip at a high speed by using three full high-definition surface scanning digital cameras above a laser irradiation area of the plate and strip; respectively sending the changes of the positions to a digital signal process (DSP) to obtain the position of a laser spot on each measurement strip; calculating to obtain the parameters of the strip shape of the plate and strip by using a measurement control cabinet; displaying the parameters on a screen of a computer; and storing the parameters in the computer. The instrument and the method have wide adaption range, high measurement precision and high measurement speed, can be used for measuring the strip shape of a cold or hot rolled metal plate and strip, and can ensure long-term reliable and stable operation in very bad environment of metallurgical production.

The invention provides a sub-function independent test method of an automatic train monitoring system based on an interface, which comprises the following steps: receiving a test request sent by a client, and extracting a to-be-tested sub-function module in the automatic train monitoring system in the test request; acquiring test data of the to-be-tested sub-function module, and determining a standard result corresponding to the test data in the to-be-tested sub-function module; sending the test data to the to-be-tested sub-function module to trigger the to-be-tested sub-function module to process the test data and return a test result; receiving a test result, and sending the test result and a standard result to the client for matching and comparison, so that the client displays the test result, wherein when the interface adapter interacts with the to-be-tested sub-function module, conversion of a test data format or a test result data format is carried out through the interface adapter. According to the method provided by the invention, the test environment is simplified, the requirements on hardware materials are reduced, and the influence of external interference on the accuracy of the test result is avoided.

The invention discloses a measuring method of the flatness of a ship equipment base based on a total-station instrument. The flatness of the equipment base is measured in the construction process of aberth or a dock; the measuring method specifically comprises the following steps: welding a setting-up piece on the ship base; adjusting the total-station instrument and enabling the equipment base to be in the measuring visual angle range; establishing a three-dimensional space coordinate system of a hull and measuring relative thickness values of four corners of the setting-up piece by using the total-station instrument according to the three-dimensional space coordinate system of the hull; then calculating thickness processing data of an adjustment gasket and processing the adjustment gasket; and finally, mounting the adjustment gasket. The measuring method disclosed by the invention has the advantages of simple operation, convenience in use and wide applicability; in addition, the flatness of the equipment base is detected by using the total-station instrument, so that the final flatness of the equipment base can meet the requirements of precision design, human errors of manual measurement are reduced, the measurement accuracy is improved, the repetition reworking rate of is reduced and further the flatness of a generator pedestal panel can be conveniently and quickly adjusted.

The invention relates to a method, system, vehicle, storage medium and electronic device for balancing batteries, the battery balancing system comprises a balancing module, an acquisition module and acontrol module, the control module is connected with an acquisition module and balance module corresponding to the same single battery through a channel, and the acquisition module and the balance module commonly uses the channel at time divisions. The method comprises the following steps: the control module acquires an SOC value of each single battery in a battery pack; the control module determines a reference SOC value according to the SOC value of each single battery in the battery pack; and the control module determines a single battery to be balanced according to the SOC value of at least one single battery in the battery pack and the reference SOC value.

The invention belongs to the technical field of radar and discloses an airborne high resolution synthetic aperture radar accurate motion compensation method which comprises the following steps: an airborne SAR receives an echo signal and performs envelope coarse compensation and phase position coarse compensation operation on the echo signal, and a coarsely compensated echo signal is obtained; the coarsely compensated echo signal is orderly subjected to range direction partitioning operation and azimuth direction partitioning operation, and N sub-blocks are obtained; residual motion error of a central point of an ith sub-block is calculated, a residual motion error compensation function of the central point of the ith sub-block is determined, and an original azimuth matching filtering function and an accurate azimuth matching filtering function are obtained; a final compensation function of the central point of the ith sub-block is determined according to the original azimuth matching filtering function, the accurate azimuth matching filtering function and the residual motion error compensation function; the ith sub-block is subjected to accurate motion compensation operation according to the final compensation function, and a compensation image of the ith sub-block is obtained till a compensation image of an airborne synthetic aperture radar is obtained.

The invention relates to a high-temperature resistance plastics centrifugal pump, which comprises a pump body, an impeller, a pump cover, a motor, a thermostability mechanical seal component and other attached components, wherein the thermostability mechanical seal component is composed of a static ring, a moving ring, a spring seat, a static ring gland, a cooling water jacket and an acid-blocking piece; the spring seat is fixed on an impeller shaft; the outer surface of the spring seat is directly taken as a seal rotating shaft; the spring seat is provided with a spring and an O-shaped seal ring which is used for separating corrosive medium from metal pieces; the cooling water jacket is provided with a cooling water nozzle and a framework oil seal; the framework is matched with the spring seat to form the cooling water seal; the pump body, impeller and pump cover form a flow passage component of the pump, are respectively made of thermostability corrosion-resisting plastic through compression molding and comprise all-plastic and pump cover structure forms. The pump has the characteristics of being reasonable and compact in structure, reliable to mount and use, can avoid the influence on the precision of mechanical sealing by the deformation of plastics due to heating, greatly prolong the service life, can resist high temperature and effectively operate in strong corrosion environment for a long time and the like.

The embodiment of the invention provides a load prediction model creation method and device, and a power load prediction method and device. The load prediction model creation method comprises the steps of obtaining historical power load characteristic data and corresponding historical condition data; determining distribution characteristics of the historical power load characteristic data and thehistorical condition data; establishing at least one initial prediction model according to the distribution characteristics; wherein the initial prediction model comprises an association relationshipbetween the historical power load characteristic data and the historical condition data; determining whether each initial prediction model satisfies a preset error condition or not according to the historical power load characteristic data and the historical condition data; and determining a power load prediction model according to the initial prediction model meeting the error condition. According to the embodiment of the invention, the algorithm is simplified, the modeling efficiency is improved, and the overfitting phenomenon is avoided, so that the created power load prediction model is simple in structure and relatively good in fitting effect, and accurate prediction of the future power load is facilitated.

This is a self-imaging overlay aligning method for the double-sided lithography machine involving the field of microelectronics special equipment technology. This method is used to achieve the overlay alignment of the sample and mask of double-sided lithography machine. This method uses the imaging technology of reflective zone plate, which uses the single-view-field microscope or CCD imaging system over the mask mark for alignment to achieve the overall technical program of double-sided aligning photolithography of the single optical head positive overlay alignment, positive twice (both positive and negative) exposure. This method provides a method to realize double-sided overlay alignment with one set of optical system only on the mask and sample side (i.e., positive side) in the double-sided lithography machine and effectively solves the technical problems as the complex structure, complicated operation and low overlay alignment accuracy of the other common aligning methods.

The invention provides a variable optical attenuator control method and system based on automatic calibration and intelligent learning. The control method comprises an automatic attenuation calibration process, a rapid attenuation control process and an intelligent self-learning process. During the automatic attenuation calibration process, a to-be-calibrated queue is determined, an attenuation value of a variable optical attenuator is set to be a minimum value, a parameter setting value of the variable optical attenuator is increased gradually by a minimum step size, and a corresponding calibration parameter value of the to-be-calibrated attenuation value is obtained. During the rapid attenuation control process, a position of a target attenuation value in a calibrated queue is searched and confirmed, a corresponding target setting parameter value of a target attenuation value is calculated, and setting and fine tuning are carried out based on a result. And during the intelligent self-learning process, a current actual light attenuation value is obtained based on sampling and correction is carried out when determination is needed. According to the invention, an automatic attenuation calibration way without manual intervention is provided; long-term influences caused by factors of an environment and device aging and the like can be eliminated based on intelligent self-learning control; and the control precision is guaranteed.

The invention provides a thermal flow sensor, comprising a power circuit, a field-effect tube, a Wheatstone bridge, an operational amplifier circuit and a microcontroller, wherein the drain of the field-effect tube is connected with the power circuit; the Wheatstone bridge comprises two bridge arms on which a heating resistor and a temperature sensitive resistor are respectively arranged, and the common point of the two bridge arms is connected with the source electrode of the field-effect tube and serves as a detecting voltage output point reflecting the current air mass flow; the operational amplifier circuit is respectively connected with the intermediate nodes of the two arms of the Wheatstone bridge, and the output end of the operational amplifier circuit is connected to the grid electrode of the field-effect tube to adjust the current flowing through the heating resistor by controlling the current flowing out from the source electrode of the field-effect tube and ensure that the surface temperature of the heating resistor remains stable; and the input end of the microcontroller is connected with the source electrode of the field-effect tube and used for processing the detecting voltage of the source electrode of the field-effect tube and outputting a frequency signal showing the current air mass flow. The thermal flow sensor has the advantages of high precision, and strong stability.

The invention discloses an agricultural information acquisition device convenient to install. The device comprises a supporting seat, a rainfall sensor, a solar cell panel, a storage battery, a communication module, a temperature and humidity sensor, a wind direction sensor and an illumination sensor; the lower surface of the supporting seat is fixedly connected with a moving structure; a groove is formed in the middle of the lower surface of the supporting seat; motors are fixedly connected to the two sides of the upper surface of the inner cavity of the groove; and limiting blocks are fixedly connected to the positions, corresponding to the motors, of the two side walls of an inner cavity of the groove. The output end of each motor is fixedly connected with a first lead screw, the otherend of the first lead screw is rotatably connected with a bearing seat, the bearing seat is fixedly connected with the inner side wall of the groove, the first lead screw is slidably connected with asliding plate, the lower surface of the sliding plate is fixedly connected with an inserting rod, and the upper surface of the supporting seat is fixedly connected with a supporting rod. The acquisition device is simple in structure, convenient to use, simple to mount and dismount, convenient to maintain, convenient to move and fix, convenient to transfer a test sample plot and good in stormy waveresistance.

The invention relates to a pig identity recognition system which comprises an identity input module, a depth image acquisition module, an image preprocessing module, a feature extraction module and afeature matching recognition module. The identity input module is used for inputting pig face basic information of each pig and establishing a feature database according to the input basic information; the depth image acquisition module is used for continuously acquiring to-be-identified pig face depth image data; the image preprocessing module is used for carrying out image smoothing and filtering processing on the acquired pig face depth image data and intercepting a face area depth image; the feature extraction module is used for performing feature extraction on the intercepted face regiondepth image to obtain face features of the to-be-identified pig; and the image recognition module is used for matching and comparing the extracted facial features with the sample feature data in the feature database to obtain matching similarity and outputting a matching result. The method can be widely applied to the field of pig identity recognition.

The invention relates to a photonic suspension gyroscope based on a double-beam optical trap system. A half-wave plate, a polarization beam splitter and a lambda / 4 slide are utilized to modulate lightoutput by a laser into two beams of circularly polarized light with the same light intensity, wherein the circularly polarized light is focused and input into a vacuum chamber through a lens. A corresponding relation exists between the light intensity detected by two photoelectric detectors and an included angle alpha of linearly polarized light and the maximum inertia main axis, wherein the ratio of the light intensity of e light to the light intensity of the o light is tan 2 alpha, namely, a deflection angle alpha can be obtained through the measured light intensity, so that the deflectionangle of the photonic suspension gyroscope can be determined. The device has no mechanical contact, so that influence of a supporting shaft on the precision of the whole system is overcome, the errorcaused by frictional resistance between the supporting shaft and a rotor is avoided, the service life of the system is prolonged, and relatively high precision can be achieved.

The invention belongs to the technical field of car spare part manufacturing and particularly discloses a welding technology of a differential mechanism assembly. The welding technology comprises thefollowing steps that 1, a differential mechanism shell and a differential mechanism gear which can be matched mutually are prepared; 2, laser washing is carried out; 3, press fitting is carried out; 4, welding wire filling and laser spot welding are carried out; 5, ring welding is carried out; 6, weld seams are cleared; 7, ultrasonic flow detection is carried out; and 8, tooth milling is carried out. Compared with the prior art, the technology is easy to operate, and the produced differential mechanism assembly is simple in structure, low in machining cost, high in precision and lighter in total mass.

The invention relates to a two-time positioning construction process for pre-buried channels of an overhead line system of a high-speed railway tunnel. By adjusting the procedure of installing the pre-buried channels, a larger operation space is provided for construction, and operators can conveniently and rapidly install channel sets on a lining trolley and can rapidly install C type channel sets, D type channel sets and E type channel sets by standing on edges of the lining trolley by means of frames such as ladders. The channels can be positioned in advance while secondary lining reinforcing steel bars are bound, time is used while the space is used sufficiently, multiple steps are executed at the same time and do not affect one another, and the result is gained with half effort.

The invention discloses a large-scale flange type workpiece punching positioning device. The device comprises a horizontally arranged worktable; a vertically arranged drilling machine is arranged on the right side of the top surface of the worktable; a vertical positioning plate support is arranged on the left side of the drilling machine; a horizontal positioning plate is arranged in the positioning plate support; a positioning sleeve is arranged at the left part of the positioning plate; a round flange plate support is arranged at the left part of the positioning plate support; a flange plate is arranged at the upper part of the flange plate support; a central positioning pin is arranged at the center of the top surface of the flange plate; a horizontally arranged positioning rod is arranged at a relative position at the top of the flange plate; vertical through holes are formed in both ends of the positioning rod; a plurality of machining holes are uniformly formed in the circumferential direction of the flange plate; and an auxiliary support is arranged at a relative position at the lower part of the flange plate. The device has the beneficial effects of punching holes with accurate positions in the large-scale flange type workpieces and being simple to operate.

The invention discloses an environment-friendly water-based gas-phase long-acting antirust solution composition which comprises the following raw materials: an oleic acid derivative antirust agent, atriazine antirust agent, an organic carboxylate antirust agent, hexamethylenetetramine, a benzotriazole corrosion inhibitor, monoethaneamine benzoate, a metal complexing agent, a defoaming agent, water and a pH (potential of hydrogen) regulator. The environment-friendly water-based gas-phase long-acting antirust solution composition takes water as a carrier, contains an oleic acid derivative antirust agent composite, is free from nitrite and other ingredients which are poisonous and harmful to a human body and an environment, is safe and environment-friendly, has excellent contact antirust capability, gas-phase antirust capability, lubricating capability, wetting ability and chemical adsorption capability, does not influence surface quality and precision of a steel ball (particularly, higher than level G10), facilitates cleaning and water treatment, reduces cost, and meets long-term antirust requirements and interprocess short-term antirust requirements of storage and package of the steel ball made from a steel based material such as carbon steel and stainless steel.

The invention discloses a lower limb rehabilitation robot based mirror training method for lower limb rehabilitation. The method includes the following steps: 1, initializing each joint angle of a lower limb rehabilitation robot; 2, collecting an initial pose when a patient sits on the lower limb rehabilitation robot at an initial state; 3, controlling, by the lower limb rehabilitation robot, motors to rotate to the initial pose; 4, collecting real-time dynamic data during the rehabilitation training of the patient; 5, processing the real-time dynamic data through an industrial personal computer, and obtaining the actual moment required by the rotation of each joint; and 6, adjusting the rotating angles of the motor of each joint, detecting the positions of the motors in real time to obtain the current position information of each joint, and feeding the information back to the industrial personal computer to inspect until the mirror position on the healthy side of the patient is achieved. The method can control the lower limb rehabilitation robot to drive the affected side of the patient to complete mirror motion according to the motion track of the healthy side of the patient, sothat reliability can be provided for the lower limb rehabilitation training of the patient.

The invention relates to a precision and efficiency detection device for a small planetary roller screw pair. The precision and efficiency detection device comprises a servo motor, a torque sensor, arotary encoder, a linear guide rail displacement sensor, an elastic clamping sleeve and a replacement rod. The rear end bevel of the elastic clamping sleeve makes contact with the bevel of a mountingshaft, and a clamping sleeve nut is rotated to enable the elastic clamping sleeve to elastically deform to clamp and fix lead screws; the linear guide rail displacement sensor provides guidance for the nut and also accurately measures axial displacement of the nut; in the testing process, a conical pin is utilized to fixedly connect a nut connecting rod with a mounting adapter, during dismounting,the conical pin is pulled out, and thus mounting and dismounting of the lead screw pair are convenient; a system torque error test under the same load condition is conducted through the equivalent replacement rod for error compensation; and a through groove is milled in the middle of a bottom plate, and a standard is provided for mounting of all components. The problem of the system torque errorin the testing process is solved, a solution is put forward for clamping of the small planetary roller screw pair, and the precision and efficiency of the lead screw pair can be accurately detected.

The invention discloses a weighing detecting system and method for a kitchen waste vehicle. The system comprises a bucket hanging device, a lifting mechanism, at least two tension sensors, at least two in-place detecting sensors and a control display, wherein the in-place detecting sensors are used for triggering and stopping the collection of tension data by the tension sensors, the upper end ofthe lifting mechanism is arranged on the waste vehicle, the lower end of the lifting mechanism is fixedly connected to one end of at least one of the tension sensors, the other end of the corresponding tension sensor is fixedly connected to the bucket hanging device, the in-place detecting sensors are arranged at one side of the bucket hanging device, and the control display is electrically connected with the lifting mechanism, the tension sensors and the in-place detecting sensors respectively. The weighing detecting system and method for the kitchen waste vehicle have the advantages that theinstallation method is simplified, the friction between a bucket lifting device and a rail part is reduced, and the weighing precision is improved; fixed-point data collection is adopted, thereby ensuring the stability of weighing data; the net weight of each-time weighing is obtained by the difference between lifting measurement and lowering measurement, and the precision of weighing is improved.