103 results about "Servo actuator" patented technology

The invention provides a data co-processing method and system for a linear servo actuator. The method comprises the following steps: firstly, acquiring a multi-level temperature data set of a key heat source area in the linear servo actuator; performing dynamic coupling analysis processing on the multi-level temperature data set based on a thermal field prediction model to generate a temperature change trend prediction result; a dynamic heat dissipation strategy grade is matched according to the temperature change trend prediction result and real-time load current data, a heat dissipation execution control instruction is generated, and temperature feedback data in the heat dissipation process is monitored in real time; and based on a comparison result of the temperature feedback data and a preset temperature threshold, triggering a thermal failure protection mechanism to adjust the execution priority of the composite heat dissipation operation. According to the invention, power output can be reduced, external active heat dissipation control is triggered, equipment shutdown and other related instructions which are in effective contact with an abnormal working state can be triggered, so that the risk of equipment damage caused by abnormal operation of the actuator is effectively reduced, and the reliability and stability of the system are improved.

The invention discloses a visual alignment method and device for printing draft intelligent deflection and spraying vehicle cooperative control, and belongs to the technical field of machine visual localization, and the method specifically comprises the steps: firstly, arranging a calibration target in an ink-jet printing area, employing an image collection device to collect an image, and calculating a rigid transformation matrix of a visual coordinate system and a printer spraying vehicle coordinate system; establishing high-precision coordinate mapping; the control terminal reads the reference position and attitude information of the original draft in the spraying vehicle coordinate system from the production management system; the method comprises the following steps: after primary inkjet of a paperboard, shooting the whole paperboard by an image acquisition device, and extracting actual contour features and coordinates of a draft through image processing; the coordinates are mapped to a spraying vehicle coordinate system through a transformation matrix, and a rotation deviation angle and a translation deviation vector are calculated; analyzing to obtain angle and translation compensation values, packaging the angle and translation compensation values into a control instruction, and sending the control instruction to ink-jet printing control software through a real-time bus; finally, software drives a servo executing mechanism, the position and the posture of the spraying vehicle are adjusted according to a new target, and accurate alignment with the paperboard is achieved.

The invention discloses an aero-engine turbine blade material in-situ mechanical test system and method, and the system comprises a multi-axis loading unit which is used for simulating the multi-axis stress state of a turbine blade under an actual working condition; the high-temperature environment module is used for realizing local rapid heating of the sample; the in-situ observation system integrates a high-temperature microscope lens with a long working distance and a high-speed camera and is used for observing and recording microscopic damage evolution of the turbine blade sample in a high-temperature loading process in real time; and the control unit is internally provided with a temperature-stress decoupling control model and a microdefect identification model and is used for compensating the plastic deformation heat effect in real time and quantifying the damage factor D. Synchronous loading of centrifugal force is achieved through the three-axis servo actuator, composite stress is accurately reproduced, the load error is small, and the limitation that a traditional single-axis test cannot simulate the multi-source load of the blade is broken through. Meanwhile, plastic work-induced temperature rise interference is reduced, and the technical problem of data distortion caused by temperature drift in a high-temperature test is solved.

The invention relates to the technical field of automobile part testing, in particular to automobile door hinge durability test equipment which comprises a base, an automobile door body and a control system, a first mounting seat and a second mounting seat are mounted on the base and the automobile door body respectively, and a servo actuator is hinged between the first mounting seat and the second mounting seat. A load sensor is mounted between the servo actuator and the first mounting seat, and a first displacement sensor is mounted on the servo actuator; a servo actuator, a load sensor and a displacement sensor are integrated on the same control system, a closed-loop force control system is constructed, and a traditional constant air cylinder load is replaced; the test deviation caused by load distortion is avoided, and the test authenticity, the working condition simulation precision and the data reliability of the automobile door hinge durability test equipment are ensured.

The utility model belongs to the technical field of actuator installation, in particular to an installation frame of a servo actuator, which comprises a servo actuator main body and an installation frame body, the top of the installation frame body is provided with an installation groove, and the servo actuator main body comprises an electro-hydraulic servo valve and an actuating cylinder positioned on the inner side of the electro-hydraulic servo valve. According to the mounting frame of the servo actuator, an electro-hydraulic servo valve on a servo actuator body is clamped to the inner side of a mounting groove, the front portion, the rear portion and the bottom of the electro-hydraulic servo valve are limited, a fixing screw rod is sleeved with a fastening plate so that the fastening plate can be clamped in a clamping groove, then the fixing screw rod is sleeved with a fastening lantern ring in a threaded mode, and therefore the electro-hydraulic servo valve can be fixed. The fastening sleeve ring is rotated to drive the fastening plate to move downwards, so that the fastening plate is tightly clamped with the clamping groove, the top, the left side and the right side of the electro-hydraulic servo valve can be limited, the servo actuator body can be limited and fixed in multiple directions after being installed, and the stability of the electro-hydraulic servo valve in the operation process is further improved.

The utility model relates to the technical field of optical element assembly, and provides a servo control tool for high-precision installation of a super-large lens, which comprises a base, the top end of the base is fixedly connected with a lens seat support, the top end of the lens seat support is movably connected with a lens seat, the lens seat and the lens seat support are not limited in the horizontal direction, and the lens seat support is movably connected with the lens seat. A lens is installed in the lens base, and a servo actuator is fixedly installed in the middle of the top end of the base. According to the utility model, the descending speed of the lens is accurately controlled through the cooperation of the servo motor and the ball screw, the bearing capacity is stronger, the lens can be ensured not to collide with the lens seat due to too fast descending in the self-centering process, the surface of the lens is prevented from being damaged and deformed, and the screw nut on the ball screw can be ensured to run along a straight line through the cooperation of the linear guide rail and the guide slide block; and the assembly precision and stability are improved.

The invention discloses a rigid-elastic coupling flight simulation platform of a large flexible aircraft and a control method of the rigid-elastic coupling flight simulation platform. The rigid-elastic coupling flight simulation platform comprises an upper motion platform, a lower fixed base, six electric servo actuators forming a parallel structure, a control system and a main controller. The method is characterized in that hinge points of six actuators on a lower fixed base adopt a non-concyclic optimized layout, the distance between the hinge points in the pitching axis direction of the platform is remarkably increased, a base geometric configuration longer in the longitudinal direction is formed, then the platform is embedded into an advanced rigid-elastic coupling flight mechanical model, and the model is a three-dimensional model. According to the method, effective verification of key flight events which are difficult to accurately simulate by a traditional six-degree-of-freedom platform can be realized, such as wing flutter boundary exploration of a large-flexibility aircraft, structural load coupling analysis under large maneuver, flight control law performance evaluation under rigid-elastic coupling influence and the like. Physical motion of the simulation platform can accurately reproduce complex dynamic characteristics predicted by the model, so that credibility and engineering application value of flutter simulation results are greatly improved.

This invention discloses a multi-sensor continuous ultrasonic welding monitoring method based on reinforcement learning, comprising: synchronously acquiring multi-dimensional physical signals such as vibration, pressure, energy, and displacement during the welding process using a multi-sensor array; extracting calibration features of each signal and fusing them to form a high-dimensional state vector; constructing a deep reinforcement learning network model integrating two algorithm architectures, defining corresponding state and action spaces, and setting a reward function based on quality compliance, abnormal parameter states, and adjustment amplitude; within a single welding cycle, inputting the high-dimensional state vector into the model to generate optimal parameter adjustment action commands, and adjusting the ultrasonic generator output and pressure mechanism setpoints in real time through a servo actuator to form a complete closed-loop control process. This method, through the combination of multi-sensor fusion and reinforcement learning, achieves dynamic adaptive monitoring and precise parameter adjustment of the welding process, improving welding quality consistency and process stability.

The invention belongs to the technical field of hydraulic auxiliary supporting, and particularly discloses a posture control method and device for a posture adjusting platform comprising a servo actuator, and the method comprises the steps: calculating the expansion amount of the servo actuator in the posture adjusting platform based on the target posture of the posture adjusting platform; and stretching out and drawing back the servo actuator based on the stretching out and drawing back amount of the servo actuator, so that the posture adjusting platform reaches the target posture. According to the method, the attitude adjusting platform can realize efficient and complex motion operation without depending on artificial experience, and the control precision, efficiency and reliability of the attitude adjusting platform are improved.

This invention relates to the field of intelligent commerce technology, and more particularly to an electromagnetic linkage-based vehicle cruise control system based on adaptive fuzzy control. The system includes: a control switch for receiving input commands from the driver, including commands to activate / deactivate cruise control, accelerate / decelerate, cancel, and resume cruise control; a central controller connected to both a vehicle speed sensor and the control switch, the central controller incorporating an adaptive fuzzy control algorithm to generate throttle control commands based on the deviation between the current vehicle speed and a set speed; a servo actuator electrically connected to the central controller; and a motor that receives commands from the central controller to drive a synchronous belt. This invention achieves automatic and precise throttle adjustment and stable cruise control in motor vehicles, solving the problems of driver fatigue and poor driving comfort caused by the need for continuous manual throttle control during long-distance driving.

The invention discloses a double-steel-wheel road roller integrated frame reliability bench test control method, which belongs to the technical field of double-steel-wheel road roller frame testing, and comprises the following steps: obtaining analogue simulation load data under a double-large vibration working condition based on analogue simulation calculation; inputting a set load spectrum program into a control system of the electro-hydraulic servo actuator so as to apply a cyclic load spectrum to the integrated frame; gradually lifting the cyclic load spectrum to a target load level, recording a dynamic strain time history, a displacement change and an acceleration response of a key measuring point in the endurance test process, and performing online damage monitoring to obtain a periodic damage detection record; and finally evaluating the fatigue damage, the durability limit and the structural reliability of the integrated frame by combining a fatigue damage accumulation theory. The method is good in universality and adaptability, can simulate the frame vibration load spectrum based on the cooperation of the front / rear double actuators and the single shaft, reproduces the vibration compaction working conditions of the front and rear double steel wheels of the road roller in the time domain, and achieves process prediction and optimization.

The embodiment of the specification discloses a robot head module and a desktop robot, wherein the robot head module comprises a head main body, a first servo actuator, a second servo actuator and a neck support; the head main body comprises a module for realizing NFC payment; the first servo actuator is fixedly connected with the head main body and is used for driving the head main body to rotate around a first axis to execute a payment confirmation action; the second servo actuator is fixedly connected with a robot body module; the first servo actuator and the second servo actuator are connected through the neck support; the second servo actuator is used for driving the neck support to rotate around a second axis; the second axis is an axis where an output shaft of the second servo actuator is located; and the first axis is perpendicular to the second axis.

The application relates to an intelligent fine pressure control device and method, and relates to the technical field of petroleum chemical industry, and is used for solving the problem of low pressure control precision in the mode of manually adjusting the valve. The intelligent fine pressure control device comprises a pressure control valve with an inlet and an outlet, a servo actuator connected with the pressure control valve, and a control module electrically connected with the servo actuator; wherein the control module can send a pressure control instruction to the servo actuator, and the servo actuator can drive the pressure control valve to act according to the pressure control instruction, so that the pressure at the outlet is equal to a preset pressure value. In the application, the control module is arranged, and the control module is used for sending the pressure control instruction to the servo actuator, so that the servo actuator can accurately drive the pressure control valve to act according to the pressure control instruction, so as to accurately adjust the pressure value at the outlet. Therefore, the adjusting precision of the intelligent fine pressure control device is improved. Furthermore, the precision control demand of automation and intelligentization of modern industry is met.

This application discloses an in-situ mechanical testing system and method for aero-engine turbine blade materials. The system includes: a multi-axis loading unit for simulating the multi-axis stress state of turbine blades under actual operating conditions; a high-temperature environment module for achieving localized rapid heating of the sample; an in-situ observation system integrating a long-working-distance high-temperature microscope and a high-speed camera for real-time observation and recording of the microscopic damage evolution of the turbine blade sample during high-temperature loading; and a control unit with a built-in temperature-stress decoupling control model and a microscopic defect identification model for real-time compensation of the thermal effects of plastic deformation and quantification of the damage factor D. This application achieves synchronous loading of centrifugal force through a three-axis servo actuator, accurately reproducing composite stress with small load errors, overcoming the limitation of traditional single-axis testing in simulating multi-source loads on blades. Simultaneously, this application reduces interference from plastic work-induced temperature rise, solving the technical problem of data distortion caused by temperature drift in high-temperature testing.

This invention discloses an anti-out-of-plane torsion force transmission system for assisting the loading of an MTS hydraulic servo actuator, comprising a lower end plate, a U-shaped support frame, eight bearings, six connecting plates, twelve adjustable screws, several nuts, two sliding devices, and several stiffening plates. This invention adjusts the spatial position of the rotatable round steel tubes in the eight bearings using the screws, thereby forming a rectangular channel capable of clamping MTS hydraulic servo actuators of different specifications. This restricts out-of-plane torsion without affecting the single-axis reciprocating loading of the MTS hydraulic servo actuator, effectively avoiding friction between the loading head and the anti-out-of-plane torsion force transmission system, and reducing experimental errors.

The application discloses a self-balancing device for dynamic debugging and loading of an actuator, which comprises a chassis, a power mechanism and a motion mechanism; the power mechanism and the motion mechanism are arranged on the chassis and are connected with each other at the same horizontal level; the power mechanism comprises a motion crossbeam, an upper roller assembly, a lower roller assembly and a long screw nut assembly; the long screw nut assembly is vertically inserted into the motion crossbeam and the chassis and extends out from the lower portion of the chassis; the top portion and the middle portion of the long screw nut assembly are connected with the motion crossbeam; the upper roller assembly is connected to the middle portion of the long screw nut assembly, and the lower roller assembly is connected to the bottom portion of the long screw nut assembly; the self-balancing device can be used for servo actuator and control system joint test, servo actuators with good dynamic performance are selected before test, and the parameter matching of the key dynamic loading channel is verified, so that important test means and guarantee are provided for the smooth performance of major structure strength test.

The invention discloses a dynamic trajectory prediction and intelligent visual servo system based on deep learning, and particularly relates to the technical field of intelligent control. The method comprises the following steps: collecting image data of a target motion state in real time, extracting dominant state information and recessive state information of a target, performing dynamic trajectory prediction, and generating time sequence characteristics of a target motion trend and probability information of a potential shielding state; performing prediction stability analysis on the time sequence characteristics of the target motion trend to generate optimized trajectory prediction data; carrying out hidden state effect analysis on the probability information of the potential shielding state, and generating real-time evaluation information of target shielding; fusing the trajectory prediction data and the real-time evaluation information, and outputting a target trajectory prediction result; and the visual servo execution mechanism is controlled based on the target trajectory prediction result, so that stable tracking and prediction control of the incomplete observable target are realized, and the practicability of the visual servo system in a complex dynamic environment is improved.

The invention relates to the technical field of non-electrical variable adjustment, and discloses a path adjustment method for an aircraft transfer platform in a multi-layer transfer scene, which comprises the following steps: acquiring the quality of a controlled object borne by a first positioning unit, mapping the fundamental frequency resonance amplitude of a system based on the quality of the controlled object, and setting a dynamic dead zone threshold value; translating the physical displacement deviation into a feature node coordinate in a parameterized spatial map, extracting an instantaneous geometric feature of a non-uniform rational B-spline curve and converting the instantaneous geometric feature into a driving compensation vector, monitoring a pose deviation generated by residual mechanical oscillation of the first positioning unit, and when the pose deviation exceeds a dynamic dead zone threshold value, determining that the first positioning unit is in a dynamic dead zone; according to the method, a static waiting time sequence is reconstructed into a dynamic accompanying compensation process, the restriction of mechanical oscillation on the operation rhythm is eliminated, and the material flow volume of a transfer system is increased.

In order to detect a workpiece (the presence or absence of the workpiece and the length of the workpiece) of a spindle without using torque variation of a servo actuator, a workpiece detection device (30) is provided with a push rod (22) which is disposed inside a back spindle (20) that grips the workpiece (W) and which can move so as to push the workpiece (W) and discharge the workpiece (W) to the outside, and a servo motor (28) which has a drive unit (28a) that moves the push rod (22) and an encoder (28b), and which detects the workpiece (the presence or absence of the workpiece and the length of the workpiece) on the back spindle (20). And a control unit (60) that controls the drive unit (28a) on the basis of the detection result of the encoder (28b). The control unit (60) moves the push rod (22) to a standby position, the encoder (28b) detects the movement of the workpiece (W) when the push rod (22) is moved, and the control unit (60) calculates the presence or absence of the workpiece (W) on the basis of the movement.

The application discloses an air suspension loading device and relates to the technical field of air suspensions, which comprises a bearing frame, a vertical loading assembly rotatably arranged on the top of the bearing frame, a power loading assembly arranged on any one side of the rotation axis of the vertical loading assembly, a piston rod arranged on the power loading assembly for axial extension and retraction, and two loading rods, each loading rod being symmetrically arranged on the two sides of the rotation axis of the vertical loading assembly and being rotatably connected with the vertical loading assembly, each loading rod being connected with a group of air suspensions, and each air suspension being fixed in the inner cavity of the bearing frame. The application solves the technical problem that the existing air suspension durability test loading device needs to be equipped with two sets of static pressure servo actuators to complete the suspension test, thereby reducing the suspension test cost and improving the detection efficiency.

A servo actuator comprising an EMI seal positioned between the output shaft and the housing. The EMI seal forms a ring around the output shaft and comprises a plurality of finger springs intermittently positioned around the ring. The finger springs are formed from an electrically conductive material such as beryllium copper.

The invention relates to an impact load-oriented electro-hydraulic servo active suspension feedback linearization sliding mode robust control method, which belongs to the technical field of vehicle active suspension and electro-hydraulic servo control, and comprises the following steps of: firstly, establishing a quarter vehicle two-degree-of-freedom active suspension model; the method comprises the following steps: step 2, constructing a nonlinear dynamic model of the electro-hydraulic servo actuator of the valve-controlled cylinder; step 3, designing a feedback linearization sliding mode composite controller and giving a stability proof; and step 4, carrying out controller parameter setting and simulation comparison. According to the feedback linearization sliding mode robust control method provided by the invention, the nonlinearity and parameter uncertainty of the actuator can be effectively compensated under the impact working conditions of a deceleration strip and the like, the piston displacement tracking error and sliding mode buffeting are remarkably reduced, sprung mass vibration is reduced, the vehicle driving smoothness and attitude stability are improved, and the method is suitable for large-scale popularization and application. The method is suitable for the field of vehicle hydraulic active suspension control.

1. The name of the design product: underwater steering engine. 2. The use of the design product: a servo actuator for underwater environment design. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: design 1 perspective view 1. 5. Design 1 is designated as the basic design.

A flow rate adjustment valve includes: a flow path portion which has one end at which an opening is formed, and in which a fluid flows; a lifting valve which is configured to close the opening by covering an entire region of the opening, open the opening by being separated from the opening in an opening direction of the opening, and change a distance from the opening in the opening direction to change a flow area with respect to the opening; and a servo actuator as a driver which moves the lifting valve in the opening direction based on a predetermined detection value.

The application relates to the technical field of actuator simulation, and particularly discloses a simulation method of an airplane control surface servo actuator considering the influence of hinge torque, which receives external current control commands, feedback control surface position and speed data through an external system interface and a closed loop control module, and provides a fault setting and an aerodynamic force data interface; enters a current control command processing module to perform fault simulation processing on the current control commands received in step 1, including simulation of hydraulic fault, electromagnetic valve blockage, command dead zone and control signal out-of-control; and the hinge torque coupling module is used to couple the dynamically changing hinge torque influence factor with the actuator motion speed, so that the defects that the load is simplified as a constant torque in the existing model are overcome, the influence of the aerodynamic environment on the control surface motion is truly reflected, the simulation result is closer to the actual flight state, and a more reliable reference basis is provided for airplane development, ground test and flight training.

The application provides a length simulation calculation method for metal hoses for engines based on a finite element method, comprising the following steps: S1, importing a metal hose model into finite element software; S2, establishing a connection relationship between components; S3, calculating the maximum displacement of a servo actuator in the X direction under a follow-up coordinate system according to the maximum swing angle requirement of the engine; S4, setting the displacement-time load of the lower support point of the first servo actuator in the X direction under the first follow-up coordinate system, setting the displacement-time load of the lower support point of the second servo actuator in the X direction under the second follow-up coordinate system, and setting the total analysis step time; S5, performing transient dynamics analysis to simulate the maximum angle circle swing of the engine under the double servo actuators; and S6, observing the swing animation diagram according to the calculation result to analyze whether the length deformation of the metal hose is coordinated.

The invention belongs to the technical field of bending moment testing, and discloses a three-point bending moment testing device, which comprises a floating bearing seat, and is characterized in that a self-aligning ball bearing is mounted in the floating bearing seat and is used for being connected with a tested piece; the vibration sensor is mounted on the surface of the floating bearing seat; the servo actuator is used for applying a radial acting force to the tested piece, and a force sensor and an elastic connecting piece are connected between the servo actuator and the floating bearing seat; the rotating power source is used for applying rotating power to the tested piece; the number of the rotation stopping supports is two, the rotation stopping supports are symmetrically arranged on the two sides of the floating bearing seat, gaps exist between the rotation stopping supports and the floating bearing seat to limit rotation of the floating bearing seat, and limiting faces matched with the rotation stopping supports are arranged on the surface of the floating bearing seat. The loading torque can be accurately regulated and controlled in real time, and the deformation self-adaption capability and the failure monitoring capability are achieved.

The invention discloses an adjustable bending-torsion ratio loading device for a beam member and an installation and loading test method thereof. The device comprises two sets of clamping upper cross beams and clamping lower cross beams which are arranged symmetrically; the two sets of bent upper cross beams and bent lower cross beams are arranged in an anti-symmetric manner; a movable spherical hinge support is arranged on the upper surface of the bending and twisting upper cross beam, and the upper portion of the spherical hinge support is connected with an electro-hydraulic servo actuator; the bottom of the clamping lower cross beam is connected with an arc slide way support with a limiting function. According to the loading device and the loading method, the loading arm and the loading point of the electro-hydraulic servo actuator can be changed, a test beam composite action loading test with any different bending-torsion ratio parameters can be carried out, and the stability of the test device under the large-angle and large-deformation loading condition can be effectively realized by utilizing the spherical hinge support; the measuring device records an elastic-plastic load displacement curve in the whole process. The device is particularly suitable for bending and torsion test loading of thin-wall section steel box girders and steel-concrete combined box girders which are small in bending and torsion rigidity and large in torsion deformation.

The invention belongs to the technical field of four-point bending testing, and discloses a rotary bending testing device which comprises a force arm rod perpendicular to the axis of a testing shaft, and the force arm rod transmits torque to the testing shaft; a servo actuator used for applying push-pull force is arranged at one end, far away from the test shaft, of the force arm rod, an output shaft of the servo actuator is connected with a force sensor, the other end of the force sensor is connected with an elastic connector, the elastic connector is connected with the force arm rod, and the direction of output force of the servo actuator is parallel to the axial direction of the test shaft. According to the invention, the structure complexity of the equipment is reduced, the loading torque can be adjusted randomly and accurately in real time, the deformation condition can be fed back in real time in the test process, and after the scheme is adopted, the operation vibration of the equipment can be effectively reduced, and the safety and the convenience of operators are improved.

The invention relates to the field of armature detection, in particular to a servo actuator armature detection device, which comprises a detection module, the detection module is used for detecting an armature, the detection module is connected with an armature storage assembly, the armature storage assembly is used for armature storage, and the armature storage assembly is connected with a blanking assembly and an armature blocking and releasing assembly. The discharging assembly is used for armature discharging, the armature blocking and releasing assembly is used for position limiting during armature detection and releasing of an armature after detection is completed, tiny defects on the surface of the armature can be captured, the armature is driven to rotate in combination with rotation of the transmission shaft, and comprehensive detection of the circumferential surface of the armature is achieved. The armature blocking and releasing assembly achieves intermittent armature detection through a transmission shaft, a supporting baffle, a ratchet wheel and other structures, when the armature is blocked and detected, the next armature is supplemented in time through the upper side discharging assembly during releasing, and efficient cooperation of continuous feeding and intermittent detection is achieved.