608 results about "Electromagnetic actuator" patented technology

Systems and methods for controlling an implantable pump are provided. For example, the exemplary controller for controlling the implantable pump may only rely on the actuator's current measurement. The controller is robust to pressure and flow changes inside the pump head, and allows fast change of pump's operation point. For example, the controller includes, a two stage, nonlinear position observer module based on a reduced order model of the electromagnetic actuator. The controller includes an algorithm that estimates the position of the moving component of the implantable pump based on the actuator's current measurement and adjusts operation of the pump accordingly. Alternatively, the controller may rely on position measurements and / or velocity estimations.

An electromagnetic relay (100) comprises three fixed terminals (60), a first mobile terminal (71), a second mobile terminal (72), and an electromagnetic actuator (20). The three fixed terminals (60) are electrically connected to different current paths. The first mobile terminal (71) contacts and separates from a first fixed terminal (61) and a shared fixed terminal (63) of the three fixed terminals (60). The second mobile terminal (72) contacts and separates from a second fixed terminal (62) and the shared fixed terminal (63) of the three fixed terminals (60). The electromagnetic actuator (20) separately displaces the first mobile terminal (71) and the second mobile terminal (72). As a result, allowance and interruption of conduction between the first fixed terminal (61) and the shared fixed terminal (63) and allowance and interruption of conduction between the second fixed terminal (62) and the shared fixed terminal (63) can be independently switched.

The invention discloses a two-axis linear enhanced Maxwell electromagnetic actuator which comprises a tooth-shaped rotor, a permanent magnet assembly, a first stator iron core, a second stator iron core and a coil winding. Coil windings are arranged on the first stator iron core and the second stator iron core, the first stator iron core and the second stator iron core are perpendicular to each other, the tooth-shaped mover is located at the center position of a notch of the first stator iron core and the center position of a notch of the second stator iron core, and an air gap exists between the tooth-shaped mover and the stator iron cores; the permanent magnet assemblies are symmetrically arranged at the tops of the first stator core and the second stator core, and the two ends of each permanent magnet assembly are connected with the first stator core and the second stator core correspondingly so that four magnetic flux paths passing through the tooth-shaped rotor, the air gaps, the first stator core and the second stator core can be formed. The two-degree-of-freedom active decoupling device has the advantages of being compact in structure, small in size, high in stability and the like, parasitic permanent magnet suction force is prevented from being generated in the non-working direction, parasitic displacement in the non-working direction is avoided, and two-degree-of-freedom active decoupling in the working direction is achieved.

The invention relates to the technical field of hydrogen storage system testing, and discloses a one-way valve combined hydrogen storage system durability test bench and a test method. A main control computer of the rack is used for configuring test task parameters, coordinating operation of subsystems and processing test data; the high-pressure hydrogen supply subsystem comprises a pressure-adjustable hydrogen source and a pressure closed-loop control module, and can apply accurate and controllable hydrogen pressure to the inlet end of the tested system according to test task parameters; the multi-channel valve state acquisition subsystem acquires the inlet and outlet pressure of the valve, the surface temperature of the valve body and vibration spectrum data in real time through pressure, temperature and vibration sensor arrays arranged at the valves, and transmits the data to the main control computer; the valve action driving subsystem comprises a high-speed electromagnetic actuator array and a displacement feedback module and can drive all valves to execute a preset opening degree sequence and opening and closing frequency. And the durability evaluation subsystem is embedded into the main control computer, calculates the accumulated damage degree of the valve and predicts the residual life cycle.

An electronic device is configured to provide haptic feedback to a user based on an input action associated with an input device. The electronic device includes a haptic engine operably connected to a processing device. The haptic engine includes an electromagnetic actuator that detects an input action associated with the input device. The electromagnetic actuator also produces a haptic output in response to the detection of the input action.

The invention discloses a high-speed motorized spindle integrating an electromagnetic actuator and a magnetofluid bearing and a using method. The high-speed motorized spindle comprises a spindle body, and a spindle body of the spindle body is supported through the arranged magnetofluid bearing; an electromagnetic actuator system used for detecting and controlling fluttering of the main shaft is arranged at the end of the main shaft and comprises a displacement detection mechanism used for detecting fluttering displacement of the main shaft and an electromagnetic vibration suppression mechanism used for applying electromagnetic force to suppress fluttering of the main shaft according to the detection result of the displacement detection mechanism. According to the magnetofluid bearing, stable and high-rigidity support is provided for a shaft by using a magnetofluid medium and utilizing the characteristic that the viscosity of the magnetofluid can be changed under an external magnetic field; and meanwhile, the electromagnetic actuator actively controls vibration generated in the machining process through accurate magnetic field control, and the stability of the main shaft in the machining process can be effectively improved. Through the combination of the two, the overall stability and the dynamic response capability of the system are remarkably improved.

The electromagnetic active suspension is used for being connected between a vehicle body and wheels of a motor vehicle and is characterized in that the electromagnetic active suspension comprises an electromagnetic actuator and a magnetorheological damper, the electromagnetic actuator is a linear motor, and the linear motor comprises a permanent magnet cylinder, a primary winding and a bearing connected with the permanent magnet cylinder and the primary winding; the magneto-rheological damper and the linear motor are integrated in the same suspension assembly, the electromagnetic actuator and the magneto-rheological damper are integrated in the same suspension assembly, the integration level of the electromagnetic active suspension is greatly improved, the linear motor is adopted as a main power source, and structure compactness and function collaboration are achieved. The direct driving mode of the linear motor abandons a complex pipeline of a traditional hydraulic system, mechanical inertia is reduced, and the response frequency is greatly improved and far exceeds the upper limit of a hydraulic suspension. The invention further discloses a vehicle which adopts the electromagnetic active suspension, the adaptability of the vehicle under extreme working conditions such as cross-country and racing tracks can be improved, and the optimal balance between control and comfort is achieved.

According to the present invention there is provided an active vibration control system comprising: an electromagnetic actuator and a control element, the electromagnetic actuator being operable to apply a force on a base structure to which the active vibration control system is attachable such that vibrations of the base structure are actively controllable by the application of said force, wherein the electromagnetic actuator and control element are relatively moveable such that the active vibration control system has at least two modes of vibration, and wherein movement of the electromagnetic actuator causes movement of at least a part of the control element.

The invention relates to the technical field of vibration and noise reduction of a pipeline system, and provides a pulsating noise active noise elimination pressure release valve which comprises a valve body, a liquid inlet cavity and a pressure release cavity, the bypass pipe is communicated with the liquid inlet cavity; the pressure relief assembly comprises an adjusting part, a pressure relief elastic part and a pressure relief valve element, the pressure relief valve element and the pressure relief elastic part are arranged in the pressure relief cavity, the adjusting part is movably arranged on the valve body, and the pressure relief elastic part is arranged between the adjusting part and the pressure relief valve element in a pressed mode; the electromagnetic actuator is arranged in the liquid inlet cavity, and the noise reduction elastic piece is arranged between the driving end of the electromagnetic actuator and the pressure relief valve element in a pressed mode. According to the pulsating noise active noise elimination pressure release valve, by arranging the electromagnetic actuator, an active noise elimination technology is introduced into pulsating noise control of the pulsating noise active noise elimination pressure release valve, and the acting force applied to the pressure release valve element can be adjusted through the noise reduction elastic piece; therefore, transient noise caused by pulsating pressure when the pressure relief valve element moves is eliminated.

The invention relates to a vibration suppression-oriented electromagnetic actuator data driving collaborative optimization design method, and belongs to the technical field of electromechanical equipment optimization design. Sample data are collected through Box-Behnken experimental design, a Gaussian process regression agent model is constructed based on the data, and a nonlinear complex mapping relation between each objective function and a design parameter is accurately represented. The influence degree of the design parameters is quantitatively evaluated through sensitivity analysis, the main design variables and the secondary design variables are distinguished accordingly, and the optimization efficiency is improved. Multi-objective optimization is carried out for the main design variables, and a design scheme with the optimal comprehensive performance is selected from a Pareto solution set through an objective decision-making mechanism based on an ideal point method in combination with the optimization result of the secondary design variables. According to the method, limitation of a traditional physical model is broken through through data-driven modeling, global optimization balance of electromagnetic performance, loss and volume is realized, and an efficient and quantifiable evaluation method is provided for design of the high-performance electromagnetic actuator.

The invention discloses an electromagnetic actuator with a rigidity compensation function. The end face of the inner side of a stator iron core of a C-shaped structure is provided with a trapezoidal slope notch, and the working face of a rotor is a slope matched with the notch of the stator iron core; the N pole and the S pole of the permanent magnet are attracted to the upper end arm of the stator core, the coil winding is wound on the yoke portion of the stator core, the flexible guide mechanism is connected with the rotor and the base, the lower end arm of the stator core is connected with the base through a fastener, and the fastener is screwed to adjust the relative distance between the end face of the stator core and the working face of the rotor. According to the invention, the rotor and the stator core form an inclined air gap, and the linear displacement of the rotor is not equal to the normal thickness of the air gap any more, but is amplified in geometrical relationship. The fundamental contradiction of strong coupling of the stroke and the thickness in a traditional plane air gap is overcome, on the premise that a small initial normal air gap is maintained, the macroscopic motion stroke several times of the thickness is achieved, and the problem that large stroke and high linearity are difficult to consider at the same time is solved from the structural principle.

The electromagnetic valve is applied to a shock absorber, an electromagnetic executing mechanism, a pilot valve assembly, a valve sleeve, a valve seat and a valve element mechanism are arranged in a cylinder, a first oil liquid opening is formed in the valve sleeve, a second oil liquid opening is formed in the valve seat, and the interception area of the first oil liquid opening is changed through sliding of the valve element mechanism; the electromagnetic actuating mechanism comprises a coil, a magnetic conductive tube, a sliding block and an ejector rod, the coil sleeves the magnetic conductive tube, and the magnetic conductive tube is provided with a mounting groove; the highest point of the magnetic conductive tube is higher than that of the coil, and the lowest point of the magnetic conductive tube is lower than that of the coil. The electromagnetic valve has the following advantages that the magnetic conductive pipe can completely cover the range of the coil, the electromagnetic force of the sliding block is kept at a constant value through saturation, the sliding block works stably, the ejector rod works stably, the opening degree of the pilot valve element can be stably controlled, under the condition that the electromagnetic force is constant, the sliding block can move more accurately, and when a shock absorber is adjusted, the electromagnetic force can be adjusted more accurately. And especially for reset of adjustment, the electromagnetic force is constant, and the sliding block can reset accurately.

The invention relates to the technical field of electromagnetic actuator state monitoring, in particular to an electromagnetic valve operation process stability and clamping stagnation detection combined test method, which comprises the following steps of S1, synchronously acquiring a coil current signal, a valve core displacement signal and an outlet pressure pulsation signal; s2, converting the current signal acquired in the S1 into an equivalent electromagnetic force waveform, a speed-acceleration trajectory and a pressure gradient curve; s3, extracting an electromagnetic force zero-crossing distortion rate, an inertia abrupt change point of a speed-acceleration trajectory and an oscillation attenuation coefficient of a pressure gradient curve; s4, calculating a time offset, and generating a primary clamping stagnation early warning; s5, obtaining a stability degradation index; and S6, when primary clamping stagnation early warning is triggered and the stability degradation index exceeds a dynamic threshold value, outputting a conclusion of a clamping stagnation-instability coupling fault. According to the method, high-precision and real-time identification of the clamping stagnation and stability deterioration faults of the electromagnetic valve is realized by fusing the multi-dimensional signal features and a double-criterion judgment mechanism.

A laboratory sample distribution system is provided comprising: a number of container carriers, wherein the container carriers each comprise a magnetically active device and are adapted to carry a sample container; at least one fan being adapted to cause an airflow; and a number of transport modules, the transport modules being arrangeable adjacent to one another and respectively comprising: a transport surface being adapted to carry the container carriers; a number of heat dissipating electromagnetic actuators being stationary arranged below the transport surface, the electromagnetic actuators being adapted to move container carriers placed on top of the transport surface by applying magnetic forces to the container carriers; and an air guiding element being adapted to guide the airflow first towards an underside of the transport surface and afterwards towards the electromagnetic actuators.

Disclosed is a coarse positioning apparatus for a stage apparatus, the coarse positioning apparatus comprising: at least one gas spring, each said at least one gas spring comprising a piston; and at least one electromagnetic actuator; wherein said at least one gas spring and said at least one electromagnetic actuator are operable to each apply respective complementary forces to said stage apparatus so as to accelerate said stage apparatus for coarse positioning of said stage apparatus, and wherein at least said gas spring is coupled to said stage apparatus throughout each full stroke of said stage apparatus.

The invention belongs to the technical field of vibration control, and provides a robust sliding mode control method and system for milling chatter of a frame beam type aviation thin-walled workpiece, and the technical scheme is as follows: determining cutter chatter active control application conditions; modeling is conducted on all corner milling technological processes through kinematics and dynamics, the corner milling process chip thicknesses in all the technological processes are established respectively, and the instantaneous milling force of a cutter is calculated in combination with the chip thicknesses; the flexibility of the cutter is considered, and a milling system flutter motion equation is established; based on a flutter motion equation of the milling system, considering cutting-in working condition change, unmodeled dynamics and external interference existing in the system, and designing a robust sliding mode controller of the system; the electromagnetic force in the milling system is calculated based on the designed electromagnetic force actuator control scheme, the control current of the electromagnetic actuator is calculated according to the input of the robust sliding mode controller of the system and the electromagnetic force, and non-contact control over the rotary cutter handle is achieved. The problem that milling chatter active control is poor in robustness and reliability is solved.

The invention relates to the technical field of vibration suppression, and discloses a multi-physics field cooperative control intelligent vibration suppression method and system, and the method comprises the following steps: S1, building a multi-physics field digital twinborn model based on a finite element analysis method, the multi-physical field at least comprises a coupling relationship among a pneumatic field, an electromagnetic field and a structural field, and the modeling of the fluid-structure interaction effect is included; and S2, based on the digital twin model, an improved particle swarm optimization algorithm is adopted to generate a control weight distribution scheme, and the control weight distribution scheme is used for dynamically adjusting the output proportion of a pneumatic actuator and an electromagnetic actuator. According to the method, the multi-physical field digital twinborn model containing the coupling relation of the pneumatic field, the electromagnetic field and the structural field and taking into account the fluid-solid coupling effect is established, so that the problem that the control precision is limited due to the fact that a single physical field control strategy is mostly adopted in a traditional vibration suppression method is solved.

A control module is provided for driving a vehicle relative to a track with a first and second rail both having a reluctance varying over the length of the track The vehicle comprises a first electromagnetic actuator module arranged to interact with the first rail; and a second electromagnetic actuator module arranged to interact with the second rail. The control module arranged to receive data indicating a distances between the electromagnetic actuator modules and the rails, relative positions of variations of the reluctance in the rails relative to the electromagnetic actuator modules. The control module is arranged to, based on the received data, generate a current signals and provide the generated current signals to the respective electromagnetic actuator modules.

Device (100) for coating or processing a metallic or ferromagnetic strip (1) in a continuous process, in which the strip (1) is conveyed by means of a transport device (4) along a conveyor line F essentially in a horizontal position through a chamber (20), which forms a space enclosed from the environment with special conditions with regard to temperature and / or pressure, with a processing or coating device (30) inside the chamber (20), with a stabilizing device (10) which is configured to control and correct the position and / or shape of the strip (1) on the basis of signals from at least one sensor (3) in case of deviations from a predetermined target position, shape and / or orientation,wherein a stabilizing device (10) is provided as an electromagnetic stabilizing device (10) acting without contact on the belt, with a plurality of electromagnetic actuators (2) arranged distributed in the width direction of the belt (1) transversely to the conveying path F for stabilizing and correcting a position or shape of the belt (1), which are arranged at least on one side of the belt (1), in particular on the top above the belt (1) in one or more row(s) transversely to the conveying path F, and the actuators (2) are arranged at least partially, in particular with their actuator surfaces (5), inside the chamber (20).

The invention provides a variable load quasi-zero stiffness vibration isolator based on an electromagnetic actuator, and belongs to the field of low-frequency vibration isolation. Comprising a supporting structure composed of a shell and a bearing platform, a positive stiffness element, a negative stiffness element and an electromagnetic actuator, the positive stiffness element, the negative stiffness element and the electromagnetic actuator are coaxially installed in the supporting structure, load gravity on the bearing platform is detected in real time through a force sensor, and output force of the electromagnetic actuator is dynamically adjusted through a control circuit according to load changes. And the rigidity of the system at the balance position is zero so as to complete self-adaptive variable load compensation. According to the parallel structure, the dynamic stiffness is remarkably reduced while high static stiffness is guaranteed, and the problems that a traditional quasi-zero stiffness vibration isolator is non-adjustable in load and narrow in zero stiffness interval are solved.

An electromagnetic actuator including: a mover; a stator; at least one coil provided to the stator and arranged on an outer periphery of the mover, the coil being configured to be energized to generate an electromagnetic force that exerts a driving force on the mover; at least one yoke member surrounding the coil, the yoke member being constituted by a plurality of yoke segments; and a mold resin filling a space between the yoke segments and the coil, the mold resin fixing the yoke segments to each other. The mold resin extends to an outer peripheral surface of the yoke member and forms an outside resin layer.

Blood pump system including: -a blood pump (1) including a pneumatically driven displacement structure (2) for, while in operation, alternatingly applying suction and pressure, in particular for cyclically driving fluid displacement through a blood pump line (3), wherein the displacement structure (2) is preferably a membrane; -a pneumatic driver (10) for pneumatically driving the displacement structure (2) of the blood pump (1) via a pneumatic control line (5); wherein the pneumatic driver (10) includes a piston-cylinder assembly (11, 12), the cylinder (12) having a gas communication port (13) for connection to the pneumatic control line (5), the piston-cylinder assembly (11, 12) being provided with an electromagnetic actuator (14) for moving the piston (11) with respect to the cylinder (12). The invention also relates to a pneumatic driver (10), as well as a method for driving a blood pump.

An electromagnetic-actuator (EA) including a coil-element (CE) having a coil-core (CC) / coil arranged about the CC-circumference. The CC has a symmetrical first-region (FR) having an axis-of-symmetry (AOS), the CC being surrounded by the coil, and a movable-magnetic-armature-body (MM AB) as a movable-actuator-element (MAE) interacts with the CE to produce an AB activation-movement, and is supported in the actuator by a bearing-device (BD) and movable from a first / second-position by activating the CE. The BD is radially-offset to the CC AOS, and the AB extends from the BD radially over the CC from a first / second-side of the CC, which has a second-region (SR) extending radially beyond the FR and is on second-side (SS) of the CC between the coil / AB in the direction of AOS such that an air-gap between CC / AB in direction of the AOS is smaller on the SS of the CC than on first-side when the AB is in first-position.

The invention provides a proportional electromagnetic actuator with a variable working air gap. The proportional electromagnetic actuator is mainly composed of an output shaft (1), a movable iron core (2), a shell (3), a magnet exciting coil (4), a static iron core (5) and the like. A radial working air gap (9) which becomes smaller and then becomes larger gradually in the direction of a static iron core circular slotted hole (12) is formed between a movable iron core front end peripheral surface (8) and a static iron core variable cross-section hole (14), and along with the increase of a last working stroke, the radial working air gap (9) becomes larger gradually, the magnetic resistance is increased, and the magnetic flux is reduced; meanwhile, a boss of the static iron core (5) is provided with a circular groove hole (12), and an axial working air gap (10) between the front end face (7) of the movable iron core and the static iron core (5) is relatively large. Therefore, when the movable iron core (2) is close to the tail end of the working stroke, the working magnetic flux can be prevented from being increased, the situation that the output electromagnetic force of the actuator is remarkably increased is relieved, deterioration of the horizontal characteristic of the output electromagnetic force is avoided, and the effective working stroke range is expanded.

An implantable pump system is provided, including an implantable blood pump suitable for use as a partial support assist device, the system further including an extracorporeal battery and a controller coupled to the implantable pump, and a programmer selectively periodically coupled to the controller to configure and adjust operating parameters of the implantable pump. The implantable pump includes a flexible membrane coupled to an electromagnetic actuator including a magnetic assembly and electromagnetic assembly, so that when the electromagnetic assembly is energized, the electromagnetic assembly causes wavelike undulations to propagate along the flexible membrane to propel blood through the implantable pump. The controller may be programmed by a programmer to operate at frequencies and duty cycles that mimic physiologic flow rates and pulsatility while operating in an efficient manner that avoids thrombus formation, hemolysis and / or platelet activation.

The invention provides a differential mechanism assembly. The differential mechanism assembly comprises a differential mechanism shell, a transmission clutch assembly arranged on the right side of the differential mechanism shell and a differential clutch assembly arranged on the left side of the differential mechanism shell. The state of the differential mechanism assembly can be switched by controlling the states of the transmission electromagnetic actuator and the differential electromagnetic actuator, so that the differential mechanism assembly is switched among a differential state, a power disconnection state and a differential locking state according to needs, the phenomenon of power reverse dragging during high-speed running of a vehicle is avoided, and the service life of the vehicle is prolonged. The escape capability of the vehicle when the vehicle runs on an uneven road surface is improved; besides, in the differential locking state, the power transmission route of the differential assembly is optimized, it is guaranteed that power of a differential shell can only be transmitted to a left half axle gear through a planetary gear sleeve and a differential clutch ring in sequence, the stress uniformity of the planetary gear sleeve and the differential clutch ring is effectively guaranteed, and the service life of the differential assembly is prolonged. Torsional deformation caused by uneven stress of the planetary gear sleeve and the differential clutch ring is avoided, and the service life of the planetary gear sleeve and the differential clutch ring is prolonged.

The present invention belongs to the technical field of electrical components, and specifically relates to a device for improving the operation of an electromagnetic actuator, and more particularly to a control device and a working method for an intelligent manufacturing actuator. When switching the action of the actuator, after supplying power to another coil with a second energy for a preset time, the power is reduced to the first energy to continuously supply power to the coil, thereby completing the power supply switching. When supplying power with the first energy, the magnetic force of the electromagnetic field generated by the corresponding coil is smaller than the magnetic force of the electromagnetic field generated by the corresponding coil when supplying power with the second energy, thereby offsetting the magnetic force generated by the previous coil, causing the actuator to act quickly, thereby improving the response speed of the actuator, and reducing the difference in the response speed of the actuator during startup and switching.

The present invention discloses an adaptive variable stiffness variable damping vibration isolator, comprising a vibration isolation unit and an electromagnetic actuator unit; the vibration isolation unit comprises a base, a vibration isolation element and a load platform, the vibration isolation element is arranged on the base for supporting the load platform; the electromagnetic actuator unit comprises a first electromagnet, a second electromagnet and a variable stiffness variable damping control unit; the second electromagnet is arranged on the base, the first electromagnet is located below the load platform and is arranged opposite to the second electromagnet; the variable stiffness variable damping control unit comprises a vibration sensor, a main control board and a current control module. The present invention adopts a damping and stiffness intelligent control strategy associated with f / f0, which can effectively control vibrations with a wide frequency band and a large dynamic load range, significantly improve the vibration isolation performance of traditional vibration isolation systems, and achieve broadband vibration isolation.

The invention relates to a gas injector for blowing in gaseous fuel, comprising an electromagnetic actuator having an armature, an inner pole and a coil; the closing element is provided with a valve needle and an armature column, the valve needle releases and closes the gas path at the sealing seat, the armature is connected with the armature column, and the armature column is operatively connected with the valve needle; a lubricant chamber filled with liquid and gas, in which the armature and the armature column are arranged; a reset element that resets the closing element into the closed initial position; a damping device having a damping chamber and a throttle, which is arranged in the lubricant chamber and dampens the closing movement; a compensation chamber as part of the lubricant chamber, the liquid and the gas being disposed in the compensation chamber; and a filling device which fills the damping chamber with a liquid and has a connection path between the compensation chamber and the damping chamber in which a valve assembly is arranged, the minimum cross-section of the connection path being larger than the maximum cross-section of the throttle of the damping device, the valve assembly blocking the connection path in the first direction and releasing the connection path in the second direction.

Aseptic dosing head (2, 60) for cryogenic liquid, comprising an aseptic reservoir (10) for cryogenic liquid communicating with a dosing outlet (24); a metering valve stem (30) extending through the aseptic cryogenic liquid reservoir (10) and having a lower distal end configured to selectively open and close the metering outlet (24); an electromagnetic actuator (40) attached to an upper end of the metering valve stem (30) and operable to move the metering valve stem (30) to open and close the metering outlet (24); and a seal (42) extending around the metering valve stem (30) and separating the aseptic cryogenic liquid reservoir (10) from a cavity (44) between the seal (42) and the actuator (40).