31 results about "Linear encoder" patented technology

The invention belongs to the technical field of robot and intelligent equipment driving, and discloses an integrated servo push rod and a control method.A push rod module is integrally designed, and a high-density motor, a ball push rod and a band-type brake are arranged in the push rod module. The invention has the characteristics of high power density, small volume, high precision, high response speed, low noise, long service life, high reliability and the like. The inside of the push rod is contacted with the deep groove ball bearing at the tail end of the screw rod through the ball retainer, and the outside is contacted with the oil-free bushing, so that the lateral strength of the push rod is improved, friction is reduced, and operation efficiency is improved. A linear encoder is arranged at the end of the screw rod, accurate control of the tail end can be achieved, a magnetic encoder is arranged at the tail end of the motor, input and output end double-closed-loop can be achieved, precision can be improved, and errors of band-type brake in power-off response time can be compensated; the lead screw is connected with the motor through the diaphragm coupling in the motor, so that the axial space is saved, and the service life of the motor is prolonged.

A measuring instrument includes a movable portion configured to rotate in an arc motion about a pivot portion, and an electronic position encoder configured to measure an absolute relative position between a detector portion and a scale portion, one of which forms part of the movable portion. In the detector portion, first and second scale element portions of first and second track portions are linear and parallel to each other, with the second track portion closer to the pivot portion than the first track portion. In the scale portion, first signal modulating scale elements are disposed along a first scale element portion according to a first signal modulating element linear spatial step WSME1 and second signal modulating scale elements are disposed along a second scale element portion according to a second signal modulating element linear spatial step WSME2 different than the first signal modulating element linear spatial step WSME1.

This invention discloses a multivariate time series forecasting method based on prediction domain transformation and dual-path fusion. A time series forecasting model, PDT, is proposed. It utilizes data-adaptive prediction domain transformation to project the time series onto the energy-concentrated optimal latent space for prediction. A dual-path architecture is designed to simultaneously achieve efficient extrapolation of dominant linear trends and capture complex nonlinear dynamics. A masked channel dependency strategy and a lightweight linear encoder are used to adaptively fusion and filter inter-variable dependencies and deeply extract intra-channel features, respectively. The proposed time series forecasting model significantly solves the problem of insufficient nonlinear expressive power of traditional linear models and enhances noise resistance and computational efficiency in high-dimensional multivariate scenarios, comprehensively improving the prediction accuracy and robustness of the model in multivariate time series forecasting tasks.

The invention discloses a stator and rotor produced by a winding process and automatic equipment thereof, and relates to the technical field of stator and rotor processing, the stator and rotor comprises a feeding module, a control console and a feeding tensioning module mounted on the surface of the control console, and the outer surface of the control console is also provided with a winding mechanism. Blowing equipment, a sliding table, a linear encoder and a rotary encoder in the ventilation part interact, the stacking thickness of the silicon steel strip can be dynamically calculated through a control system according to the number of winding turns monitored by the rotary encoder, and the sliding table is driven to carry a blowing pipe to accurately move along the outer contour of the silicon steel strip; the problem of heat accumulation caused by increase of the number of layers of the internal silicon steel strips and deterioration of heat dissipation conditions in the winding process is solved. Cooling air flow is precisely guided and focused on an inner layer area where heat dissipation is most difficult, and the problem that interlayer gaps are generated due to internal overheat expansion of the iron core is effectively solved.

The invention relates to the technical field of bioinformatics and deep learning, and discloses a space gene expression enhancement method based on multi-modal deep learning. According to the method, a three-branch feature extraction module is constructed, a target point scale branch module extracts local detail features, a neighborhood branch module strengthens the representation capability of a spatial context, and a global branch module provides macroscopic organization structure information, so that the problem of insufficient information under a single view angle is effectively solved through combination of the three branch feature extraction modules; on this basis, a linear Transform encoder is introduced to perform efficient modeling on different scale features, and deep information fusion is performed through a multi-head cross attention mechanism, so that the model can accurately capture spatial correlation between different regions; and a high-resolution interpolation strategy is introduced in a data construction level, so that the continuity and the fine-grained expression capability of the spatial atlas are remarkably improved.

The present invention relates to a linear encoder (60) comprising a sensor board (65), position sensing sensors (64) provided on a surface (65A) of the sensor board (65), a positioning plate (62) provided with window sections (62b) facing the position sensing sensors (64), and fastening sections (80) that secure the sensor board (65) to the positioning plate (62). A plurality of position sensing sensors (64) are arranged within the window sections (62b) in such a state that one surface (65A) of the sensor board (65) abuts the positioning plate (62).

A human-to-machine transmission system and a machine-to-human transmission system includes a non-linear encoder that converts data representing an utterance into a frequency spectrum representing an aural range. An encoder in the human-to-machine transmission system that converts the output of the non-linear decoder into a bitstream and a decoder converts the bitstream into the frequency spectrum. An automatic speech recognition engine of the human-to-machine transmission system processes an output of the decoder to deliver an output. The machine-to-human transmission system includes a language model that replies to inquiries and a neural network that converts the text-to-speech received from a text-to-speech engine. It also includes a decoder that converts an input into the frequency spectrum, a vocoder that converts the frequency spectrum into audio frames, and a loudspeaker that converts the audio frame into audible sound.

The application relates to a closed-loop stepping module system with a linear encoder and a control method thereof, which comprises a motor driver and a motor controller, a motor mounting support and a base, and a stepping motor, a screw rod, a nut, a guide rail and a load sliding block which are respectively mounted on the motor mounting support and the base. The motor controller is connected with the stepping motor through the motor driver. The stepping motor is in transmission connection with the nut through the screw rod. The nut drives the load sliding block to move on the guide rail. The system further comprises a linear encoder magnetic strip and a linear encoder module. The linear encoder magnetic strip is mounted on the inner side wall of the shell of the motor mounting support and the base. The linear encoder module is oppositely arranged with the linear encoder magnetic strip and is connected with the nut. Compared with the prior art, the application has the advantages of greatly improving the motion precision of the linear stepping module.

A patient handling system (PHS) for a medical imaging device positions a patient on a patient bed into and out of an imaging field of view. A cart carrying a patient bed translates linearly on the frame. The weight load of the patient bed is transferred to the frame in a load direction. The system incorporates a linear motor having a rotor coupled to the cart and a linear stator coupled to the frame in mutually opposite orientation separated by a motor gap. The system also incorporates a linear motion encoder having a sensing head coupled to the cart and a linear encoder strip coupled to the frame in a mutually opposite orientation separated by a sensor gap. Both the motor gap and the sensor gap are oriented parallel to the weight load direction to reduce the likelihood of any gap change caused by load deflection of the frame.

The invention relates to a magnetic levitation heavy load line encoder, an integrated driving system and a rotor identification method. The encoder comprises a main module, and the main module is provided with a data processing unit, a communication interface and a plurality of groups of Hall sensors. The plurality of groups of Hall sensors are respectively a first Hall group for detecting a magnetic field of a main code channel, a second Hall group for detecting a magnetic field of an auxiliary code channel and a third Hall group for detecting rotor coding magnetic steel; the main code channel and the auxiliary code channel are arranged by adopting vernier type magnetic steel; the data processing unit calculates the absolute position through magnetic field signals of the first Hall group and the second Hall group, detects the distance difference of rotor coding magnetic steel through the third Hall group to generate a rotor unique identifier, and outputs position and identifier information through the communication interface to drive a heavy-load rotor to operate. By adopting the method, the production efficiency and the system reliability can be greatly improved.

A method for applying a measurement scale to a linear profile rail guide carriage surface, the guide carriage being configured to be guided on a guide rail linearly and longitudinally toward the guide rail and having a first side surface extending longitudinally, the measurement scale including at least one track extending linearly and longitudinally, including several mirror regions and marking regions arranged alternately one behind the other, uses a pulsed laser to generate a laser beam and introduces a microstructure in a first region corresponding to at least one first side surface marking region. A sequence of light pulses is directed at the first region so that the laser beam is moved two-dimensionally relative to the first region to irradiate successively different subregions of the first region by the light pulses. Each different irradiated subregion has an overlap in, or transverse to, the longitudinal direction with at least two other irradiated subregions.

To provide an apparatus for a tire capable of accurately correcting the positional shift of a slidably moving cylindrical body with respect to a target position, and a method for manufacturing the tire using the apparatus for the tire.SOLUTION: When a pair of drum body side 1Ab and side 2a constituting a shape drum side 2a are slid and moved along a cylinder axis direction and positioned at a preset target position, a driving motor side 4b is controlled by a control part 7 based on the position of the target position, and each drum body side 2a is slid and moved and positioned. A detection result obtained by the linear encoder 8 detecting the position of each positioned drum body side 2a in the cylinder axis direction is input to the control unit 7, a positional deviation amount between the detection result and the target position is calculated, and the green tire G molded by laminating the unvulcanized tire member M on each drum body side 2a in which the positional deviation in the sliding direction with respect to the target position is corrected based on the positional deviation amount is vulcanized to manufacture the tire T.SELECTED DRAWING: Figure 5

The application discloses a kind of EHA comprehensive error dynamic detection methods based on built-in encoder, including steps: (1) control hydraulic cylinder in effective stroke positive feed, utilize rotary encoder, linear encoder and data acquisition system synchronous measurement actual rotation angle of servo motor and actual displacement of hydraulic cylinder piston rod;(2) calculate the displacement error of EHA system when feeding and the evaluation parameter of displacement error;The application establishes a kind of comprehensive, convenient and precise displacement error detection method.

The present invention relates to a recording apparatus that suppresses attachment of ink mist to a scale of a linear encoder. The recording apparatus (1) includes: a medium (M) conveying section (29); a recording head (27) that ejects ink toward the medium (M) to perform recording; a carriage (26) that carries the recording head (27) and reciprocally moves in a scanning direction; an air blowing section (101) that blows air toward the recording head (27); a detection section (110) that is located upstream of the carriage (26) in a conveying direction (A) and is located between the air blowing section (101) and the recording head (27) in an air blowing direction (F) in which air is blown by the air blowing section (101), and that detects a position of the carriage (26) in the scanning direction; a housing (12); and a cover (100) that covers a linear encoder scale (111) of the detection section (110) to shield the blowing by the air blowing section (101).

A recording apparatus includes a conveyance unit for a medium, a recording head that performs recording by ejecting ink onto the medium, a carriage on which the recording head is mounted and which reciprocates in a scanning direction, a blower unit that sends air toward the recording head, a detection unit that is located upstream in a conveyance direction of the carriage and between the blower unit and the recording head in a blowing direction of air by the blower unit and detects a position of the carriage in the scanning direction, a housing, and a cover that covers a linear encoder scale of the detection unit so as to block air blow by the blower unit.

The invention discloses a colorectal cancer diagnosis method based on multi-granularity cascade perception. The specific implementation process is as follows: the method constructs discrimination features from two perspectives of fine granularity and coarse granularity; regular self-adaptive sampling convolution is designed at a fine-grained perspective, a gland boundary is utilized to guide sampling point offset, the boundary is constrained by hyperbolic tangent, and sub-pixel-level feature extraction of disordered glands is realized in combination with bilinear interpolation. A group residual linear encoder is constructed at a coarse-grained perspective, class features are linearly modeled in multiple subspaces through kernel mapping, inter-class differences are enhanced by using a residual path, and efficient representation of an organization structure is realized. In order to realize cross-granularity collaboration, a multi-granularity cascade feature coupling module is constructed, discriminant response is re-calibrated in channel and spatial dimensions, low response noise is suppressed through content awareness gating, and cross-granularity semantic conflicts are relieved. Experiments show that the method has remarkable diagnosis performance and clinical interpretability, the workload of pathologists can be reduced, and the colorectal cancer diagnosis efficiency can be improved.

The utility model relates to the technical field of linear encoders, and discloses a mounting bracket for a linear encoder, which comprises a main frame, a sliding chute is arranged at the top end of the main frame, a threaded rod is arranged in the sliding chute, the surface of the threaded rod is in transmission connection with the inside of a sliding block, and the right end of the sliding block is fixedly connected with the left end of an electric telescopic rod. And the right end of the electric telescopic rod is fixedly connected with the left end of a clamping plate. When the distance between the clamping plates needs to be adjusted, the servo motor is started, the output end of the servo motor drives the threaded rod to rotate, and due to the fact that the interior of the sliding block is in transmission connection with the surface of the threaded rod, the sliding block can move along the sliding groove through rotation of the threaded rod, for example, when the threaded rod rotates clockwise, the threaded rod can move along the sliding groove. The sliding blocks can move in the direction close to the center of the containing plate, the sliding blocks move to drive the clamping plates to move through the electric telescopic rods, so that the distance between the two clamping plates is adjusted, and the electric telescopic rods can conduct finer distance adjustment after the sliding blocks are adjusted to the basic positions.

The invention discloses a design method of a relative motion error observer between a rotor and a rotor of a magnetic lead screw integrated electric actuator, and belongs to the field of linear actuator control. According to the method, in a displacement closed loop, a speed closed loop and a thrust closed loop, a linear side sensor signal is converted according to a transmission ratio to obtain a corresponding rotor side theoretical value, the difference between the rotor side theoretical value and a rotor side measured value is obtained, and a relative position error, a relative speed error and a relative torque error are synchronously output; wherein the rotor torque is obtained by real-time calculation of quadrature-axis current. The three sets of error signals can be directly used for open-loop compensation, the magnetic transmission slip frequency can be suppressed without additional hardware, the system tracking precision is improved, and the dependence on a high-cost linear encoder is reduced. The device is suitable for high-precision linear motion occasions such as new energy vehicle active suspensions, airplane flap driving and satellite antenna unfolding.

Linear encoder comprising a scale unit (1) and a slider which slides along the scale unit (1), wherein the slide has a slide housing (11) comprising a slide retaining unit (12), a detection head retaining unit (13) mounted within a scale housing (2) of the scale unit (1), and a column (14) extending between the outside and inside of the scale housing (2) to connect these two retaining units (12, 13), and a part of the column (14) that is closer to the detection head holding unit (13), and a part of the detection head holding unit (13) that is closer to the column (14), are drilled out with a thickness that is greater than a thickness of the column (4).

The invention discloses a linear encoder precision compensation system and method based on error table compensation, and the system comprises a module pedestal, the module pedestal is provided with a multi-read-head linear magnetic encoder and a rotor sliding along the module pedestal, the rotor is provided with a magnetic scale cooperating with the multi-read-head linear magnetic encoder, and the magnetic scale is provided with a plurality of error tables. A high-precision reference measurement system is arranged on the module base and the rotor in a matched manner; the calibration data acquisition unit is used for synchronously acquiring position output information of the multi-read-head linear magnetic encoder and the high-precision reference measurement system; and the calibration module is used for controlling the rotor to move, calculating a position error and generating a static error compensation table. The system is high in cost benefit, the precision of magnetic drive module products produced in a large scale can be permanently improved only by adding a set of reusable reference measurement system in a factory leaving link, and the situation that each module is equipped with an expensive high-precision grating ruler is avoided.

This utility model relates to a linear motor direct drive worktable with a safety protection device. The utility model includes a linear guide rail mounted on the machine tool bed; a worktable body with a slider slidably connected to the linear guide rail at its bottom; a linear motor including a primary and a secondary component, the primary component mounted at the bottom of the worktable body and the secondary component mounted on the machine tool bed; a linear encoder ruler mounted on the machine tool bed and extending along the sliding direction of the worktable body; an encoder ruler reading head mounted on the worktable body corresponding to the linear encoder ruler; a first and a second limit buffer device, respectively mounted on the machine tool bed and located on opposite sides of the worktable body's moving direction; and a braking device mounted on the slider. This utility model achieves high-speed, stable, and safe linear motion of the worktable.

The invention discloses a helicopter resonance early warning method and device, and the device comprises a rotary encoder which is disposed in a shimmy hinge rotating shaft of a propeller hub, the bottom of the rotary encoder is fixed to the rotating shaft, and a knob at the top of the rotary encoder is connected with a helicopter blade through a connecting piece. Angular displacement mechanical signals of the blades are converted into electric signals through the rotary encoder; the linear encoder is arranged in the hydraulic shimmy damper and comprises a ruler body and a pull rod, the hydraulic shimmy damper comprises a shell and a piston rod, the tail end of the ruler body is fixedly installed on the inner wall of the shell through a support, and the front end of the pull rod is hinged to the piston rod; and the controller reads and processes the digital signals transmitted by the rotary encoder and the linear encoder in real time, compares the real-time signals with a preset threshold value, and gives an alarm. And meanwhile, the blade shimmy motion and the shimmy damper working state are monitored to predict resonance, and the two are mutually verified, so that the prediction accuracy and reliability are improved.

The invention discloses a visual code scanning intelligent system for irradiation processing, relates to the technical field of irradiation processing automatic control, and solves the problems of high manual intervention degree, low detection precision, poor flow linkage and the like in the existing irradiation processing. The system comprises a hardware execution module, a control module and an information display module, the hardware execution module comprises a multi-station code reader, an area-array camera assembly, a laser code carving machine and the like, and information collection and execution control are achieved. The control module carries a visual industrial personal computer and an algorithm platform to complete data processing, process matching and exception handling; and the information display module realizes production state visualization and manual interaction. A multi-station visual code scanning and area-array camera detection combined structure is adopted, manual operation is replaced, and the detection precision is improved; through linkage of a linear speed encoder and a control module, the problem of material positioning in an irradiation area is solved. Various exception handling mechanisms are integrated, and production stability is guaranteed; the modular design adapts to multiple scenes, and can be widely applied to irradiation processing of food and medical equipment.

A linear encoder (60) is provided with: a sensor substrate (65); a position detection sensor (64) provided on one surface (65A) of the sensor substrate (65); a positioning plate (62) provided with a window section (62b) at a portion facing the position detection sensor (64); and a fixing section (80) that fixes the sensor substrate (65) to the positioning plate (62), and the plurality of position detection sensors (64) are disposed within the window section (62b) in a state in which one surface (65A) of the sensor substrate (65) is in contact with the positioning plate (62).

The application relates to the technical field of switch detection, and discloses a pull rope type switch assembly post-detection device which comprises a detection table, an air cylinder, a first clamp, a lead-through head and a mechanical arm assembly. A pressure sensor and a linear encoder synchronously collect clamping tension and pulling displacement; the pulling displacement corresponding to the moment when the contact is led through is marked as a trigger displacement; the logarithmic slope is extracted at the front section and the end section of an elastic working interval, the spring pre-pressing force component and the guide groove friction component are decoupled by combining the spring force balance relationship, and decoupled data sets are obtained; the decoupled data sets are input into a linear wrap angle model, geometric nonlinear residuals are obtained by subtracting the second-order change amount of actual measurement from the second-order change amount of theory, and the guide groove geometric degradation position and degree characteristic values are extracted; the characteristic values are compared and classified with a preset qualified interval, a defect type identifier is obtained, the mechanical arm assembly is driven to sort the switches according to the defect types and store the switches in corresponding storage areas, and spring assembly defects, guide groove friction defects and guide groove geometric degradation defects are identified and traced.

The application discloses a novel method and corresponding measuring device for rapidly measuring key mechanical parameters of rock, including scratch hardness, Brinell hardness, Young's modulus and Mohr-Coulomb parameters (uniaxial compressive strength and internal friction angle). The equipment system comprises a portable frame, which contains a set of horizontal linear driving equipment, equipped with a set of linear encoders for accurately measuring horizontal displacement; the vertical direction contains a set of servo vertical driving equipment, equipped with a set of incremental magnetic encoders for accurately measuring vertical displacement, and a set of linear variable differential transformers (LVDT) for accurately sensing the slight concave-convex fluctuation of the rock surface; the servo motor drives the hemispherical composite piece through a screw rod; the size of the force in the horizontal and vertical directions of the scratch is measured by a bidirectional force sensor installed above the composite piece. The horizontal linear motor and the vertical servo motor are both loaded at a uniform speed; according to the size of the measured force, the scratch hardness and the Brinell hardness of the rock can be calculated; according to the theoretical solution of the slip line field hemispherical tooth, the Mohr-Coulomb parameters of the rock, including the uniaxial compressive strength (or cohesive force) and the internal friction angle, can be inversely calculated. When the vertical servo motor is loaded alone, the Brinell hardness of the rock can also be calculated; the Young's modulus can be calculated by the stiffness during unloading.

A conveyor comprising a conveyor belt with magnetic markers and comprising at least 3 position sensing units that derive position information from the magnetic markers, and a control unit that produces position information from sinusoidal and cosinusoidal signals produced by the position sensing units. The conveyor belt has an end-joining zone in which the magnetic markers are absent or not readable. Each position sensing unit preferably also comprises Hall sensors that produce a blank zone entering signal when the maximum intensity of the magnetic field of the markers drops down to or below a threshold intensity lower than a default maximum intensity, indicative of the position sensing unit in question entering that end-joining zone and produces a blank zone leaving signal when the maximum intensity of the magnetic field rises to or above said threshold intensity, indicative of the position sensing unit in question leaving the end-joining zone.