46 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.

An automated wireless strut assembly having a lead assembly, a head assembly coupled to the lead assembly, a motor housing coupled to the lead assembly and the head assembly, and a battery assembly coupled to the lead assembly and the motor housing. The lead assembly has a lead shaft, a linear encoder, a control circuitry, an upper clevis having a first connector and a lower clevis having a second connector. A distance between the first and second connectors is automatically adjusted. A computer device automatically connects to the lead assembly through a circuit assembly. The lead assembly is programed through the computer device to make scheduled adjustments automatically.

The invention provides a high-precision high-robustness PMLSM position tracking control method and system, and relates to the technical field of numerical control. Comprising a DSP processor, a detection circuit, a Hall sensor, a linear grating ruler, a Fault signal acquisition circuit, a reset circuit, an IPM protection isolation drive circuit, an IPM inverter circuit, a JTAG circuit, a crystal oscillator circuit, a level conversion circuit, an upper computer and a permanent magnet linear synchronous motor. Firstly, a LuGre model based on an improved Stribeck effect function is designed, then a PMLSM position tracking controller is designed, robust simple adaptive control is utilized to solve the problem of influence of uncertainty on system tracking precision, a command generation tracker is utilized to calculate parameters of the robust simple adaptive controller through model difference, and the position tracking precision of the system is improved. The robust simple adaptive control method based on the command generation tracker is adopted, so that the uncertainty factors of the system can be more effectively inhibited, the output error is reduced, and the position tracking precision is improved.

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 an anomaly detection method for textile equipment, and relates to the technical field of anomaly detection of the textile equipment, and the method comprises the following steps: building a system model of a linear encoder; representing a system model of the linear encoder as a state space form, wherein the state space form comprises a state vector, a state transition equation and an observation equation; prior to operation of the linear encoder, a state estimate and a covariance matrix of the Kalman filter are initialized. According to the invention, by establishing the hidden danger perception model, intelligent perception of abnormity in the operation process of the linear encoder is realized, so that the equipment can timely give out an early warning prompt when a hidden danger risk of position information feedback errors occurs, and related technical personnel are notified to know, so that measures are timely taken for overhaul and maintenance, and the maintenance efficiency is improved. And the position deviation condition in the production process is avoided. According to the intelligent abnormity sensing method, the textile quality problem caused by abnormity can be greatly reduced, and the stability and reliability of the production process are improved.

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.

This invention belongs to the field of displacement measurement technology and discloses an absolute magnetic grating linear encoder. Employing a multi-track absolute magnetic grating linear encoder, it determines absolute position information by simultaneously reading the encoded data from the incremental track, the first reference track, and the second reference track, and comparing the phase difference between the three. After a power outage and subsequent power-on, it can accurately read the system's absolute position without requiring calibration at the origin after each power-on. This invention achieves linear absolute encoding of arbitrary length by modifying the magnetic pole pitch of the corresponding tracks, reducing the sensor design complexity of the reading head; the use of a TMR sensor effectively increases magnetic sensitivity, improving the accuracy of the system's linear distance measurement.

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).

The invention relates to a die positioning method using a die bonding apparatus, the apparatus comprising: a carriage; a linear encoder includes an encoder scale and first and second encoder heads. The carriage includes a joint head and a camera. A central axis of the bonding head and an optical axis of the camera are a first distance from each other along the traveling direction. The first and second encoder heads are at a second distance from each other along the direction of travel, the second distance corresponding to the first distance and an offset corresponding to an alignment error between the first and second encoder heads and the central axis of the bond head and the optical axis of the camera, respectively. Comprising: a) finding a target position for positioning the die, b) measuring or recording an alignment error between the camera optical axis and the target position, c) recording a difference between the first and second distances, d) recording the positioning of the carriage, e) aligning the bond head with the target position: i) outputs of the first and second encoder heads; ii) the recorded difference; and iii) optionally aligning the error, and f) placing the die at the target location.

A device for the lithography-based additive manufacturing of three-dimensional structures may comprise a building platform defining a building plane, a light engine designed for the dynamic patterning of light in an exposure field of said light engine, a material transport unit comprising a first drive mechanism for transporting a material layer across the exposure field, a second drive mechanism for causing relative movement of the light engine and the building platform along a displacement path extending parallel to the building plane, a linear encoder for sensing a position and / or a velocity of the light engine relative to the building platform, and / or one or more control units configured to adjust the feeding rate of a pattern data feeder based on the position or the velocity sensed by the linear encoder.

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.

A system for positioning a catheter within vasculature of a patient includes an introducer having a proximal hub configured to remain outside of the patient, an introducer catheter extending from the proximal hub, and a body forming a hub lumen. The system also includes the catheter, the catheter being sized and shaped to pass through the hub lumen and through the introducer catheter into the vasculature of the patient. The introducer includes a linear encoder sensor and the catheter includes a linear encoder scale so that, as the catheter passes through the introducer, the linear encoder sensor is configured to generate a signal indicative of an axial distance which the catheter has traveled relative to the introducer.

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 system for positioning a catheter within vasculature of a patient includes an introducer having a proximal hub configured to remain outside of the patient, an introducer catheter extending from the proximal hub, and a body forming a hub lumen. The system also includes the catheter, the catheter being sized and shaped to pass through the hub lumen and through the introducer catheter into the vasculature of the patient. The introducer includes a linear encoder sensor and the catheter includes a linear encoder scale so that, as the catheter passes through the introducer, the linear encoder sensor is configured to generate a signal indicative of an axial distance which the catheter has traveled relative to the introducer.

A die bonding apparatus including a linear motor and a carriage, the carriage including a bond-head configured to pick up a die and a camera configured to detect a target location for positioning the die and for measuring an alignment error between an optical axis of the camera and the target location. A central axis of the bond-head and the optical axis are distant from each other by a first distance. The apparatus includes a linear encoder with an encoder scale, first and second encoder heads mounted on the carriage, and a controller arranged to move the carriage as a function of values read by the first and second encoder heads to align the bonding head with the target location. The first and second encoder heads are distant from each other by a second distance corresponding to the first distance plus an alignment error.

A gradient-based encoder mechanism for a rotary motor, linear motor, or other actuator can include a color sensor that measures a color at a certain point in front of the sensor. A scale in front of the sensor is encoded with different colors arranged to form one or more gradients. Each color represents a different absolute position of a shaft, screw, slide, belt, or other actuated element. Either the sensor or the scale is coupled to and moves with the actuated element. The other of the sensor or scale remains stationary. As a result, the color that is in front of the sensor changes as the actuated element moves. The color sensor outputs the color measurement to controller circuitry, which converts the color into an output signal representing the position of the actuated element. A combination rotary and linear encoder is also disclosed.

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.

A bond test apparatus comprises: a flexure having a fixed end and a free end; a test tool, the test tool being coupled to the free end of the flexure and configured to contact a bond during a bond test, so that application of a test force between the test tool and the bond during a bond test displaces the free end of the flexure relative to the fixed end of the flexure; a linear encoder; and a processor which is configured to receive an output signal from the linear encoder. The linear encoder is configured to measure a displacement of the free end of the flexure relative to the fixed end of the flexure. The linear encoder is configured to deliver a digital output signal to the processor, and the processor is programmed to convert the digital output signal into a measurement of the magnitude of the test force. A method of measuring a test force in a bond test apparatus is also provided.

The preferred embodiments relate to the field of measuring technology, and can be used to determine in-motion delta robot arm deformation. The method includes the use of a linear encoder, which is mounted on one side of the delta robot arm, and the shaft is attached to the other side of the arm, and the turning shaft is arranged with freedom of movement inside the linear encoder, and the delta robot arm deformation is determined during its motion by displacement of the said shaft inside the encoder relative to its initial position. The use of the invention enables to simplify the process of determining deformations.