283 results about "Solenoid 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.

Operating a fuel injector in a fuel system for an engine includes energizing a first solenoid actuator to move a spill valve from a first position to a second, closed position, and energizing a second solenoid actuator to move a fuel injection valve in the fuel injector from a closed position to an open position. A pull-in tier of a waveform energizing the second solenoid actuator is generated via a first current produced by a boosted voltage power supply and a second current produced by a lower voltage power supply. Arrival timing of the valve at the open position is detected based on a property of the second current, such that a valve arrival timing error may be used to trim the fuel injector. Related methodology and control logic is also disclosed.

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 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 disconnect system for selectively coupling or disconnecting a drive member and a driven member. The disconnect system includes a clutch ring rotationally coupled to a drive member, a solenoid actuator, and a shift fork coupled to the clutch ring and configured to be pivotally moved by the solenoid actuator. The shift fork configured to be selectively moved by the solenoid actuator to transition the clutch ring between an engaged position where the clutch ring is rotationally coupled to a driven member and a disengaged position where the clutch ring is disconnected from the driven member.

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.

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).

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.

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.

Drivetrain assemblies for personal care devices using electromagnetic components to generate a combination of controllable power tapping and sweeping motions. The drivetrain assemblies include a drivetrain shaft at least partially contained within a body portion of the device. The drivetrain shaft is further configured to engage a brush head member of the device. The drivetrain assemblies further include a motor mounted on the drivetrain shaft, where the motor is configured to periodically rotate the drivetrain shaft about a first axis of the device, and an electromagnetic assembly configured to drive the drivetrain shaft and thereby the brush head member about an second axis of the device or in a direction parallel to a third axis of the device. The electromagnetic assembly includes a stator, a voice coil actuator, a rotor, or a linear solenoid actuator, for example.

A water valve having a housing defining an inlet and an outlet and a flow path extending therethrough, a pressure sensor configured to sense a water pressure at the inlet, a valve member situated within the flow path to open and close the flow path, a solenoid actuator, and a controller coupled to the pressure sensor to read the water pressure at the inlet and coupled to the solenoid to open and close the valve is provided. The controller determines an amount of time to hold the valve open in order to dispense an amount of water based on the water pressure. The controller commands the solenoid to open and close the valve to dispense the amount of water regardless of the water pressure. The controller is also configured to open the valve to reduce inlet pressure and prevent failure thereof.

A gas injector for injecting a gaseous fuel. The gas injector includes a solenoid actuator having an armature, an internal pole and a coil; a closing element, which unblocks and seals a gas path at a valve seat, the armature being connected to the closing element; a sealed lubricant chamber, which is filled with a lubricant, and in which the armature is situated, the lubricant ensuring lubrication of the armature; and a flexible sealing element, which seals the lubricant chamber with respect to the gas path, a damping device being situated in the lubricant chamber.

A composite valve sub assembly includes a tubular sleeve inserted into a single attachment hole of a body; an electromagnetic valve body housed in the sleeve; a solenoid actuator configured to move the electromagnetic valve body in the sleeve; a plug fixed at an end portion of the sleeve and disposed between the sleeve and a bottom surface of the attachment hole; and a check valve body disposed on the opposite side of the electromagnetic valve body from the plug. The plug has an internal flow path including a first opening connected to a first flow path of the body and opened and closed by the electromagnetic valve body, and a second opening connected to a second flow path of the body and opened and closed by the check valve body.

The invention relates to a device for controlling and / or regulating the movement of an object with regard to high dynamics with high accuracy and low energy consumption, said device comprising an electromagnetic actuator (2) which is designed to move the object and which has a stator (3) and a rotor (4), the rotor interacts electromagnetically with the stator (3) to generate movement and is coupled with an object or carries the object; a flexible member (7, 12) for guiding and / or carrying the rotor (4); and at least one sensor (13) for detecting a movement of the rotor (4) and / or of the object, a sensor signal of the at least one sensor (13) generated on the basis of the movement of the rotor (4) and / or of the object being able to be used for controlling and / or adjusting the position of the rotor (4). The invention further relates to a corresponding method.

The application discloses a rotor stability control device and method with a spherical hinge, which mainly comprises a measurer, a controller, an electromagnetic actuator and a spherical hinge bearing support. The method mainly comprises the following steps: real-time monitoring and acquisition of vibration state data of a spherical hinge balance disc during rotation of a rotor; generation of a control signal by the controller according to the monitored and acquired vibration state data; output of an electromagnetic force by the electromagnetic actuator according to the control signal; application of the electromagnetic force to the spherical hinge balance disc, suppression of vibration of the balance disc and adjustment of equivalent angular stiffness, angular damping and angular mass of the spherical hinge bearing support; and application of the equivalent angular stiffness, the angular damping and the angular mass to the rotor through a controllable flexible foundation, so as to realize rotor stability control.

------ Enclosure configured to generate sound with low spatial decay and no resonance effect in a reverberant medium The invention relates to an enclosure (1), comprising: a front face (2); a rear face (3); an enclosure (4) connecting the front face (2) to the rear face (3); at least one electromagnetic actuator (6) mechanically connected to the front face (2) and configured to generate vibrations in the front face (2) from a control signal; at least one solid core (7), extending between the front face (2) and the rear face (3), such that the core or each core (7) transmits vibrations between the front face (2) and the rear face (3); and control electronics configured to deliver control signals to the electromagnetic actuator (6) or to each electromagnetic actuator (6) so as to generate a sound by vibrating the front face (2), at least one core (7), the casing (4) and the rear face (3).Figure to be published: Figure 4.

The present invention addresses the problem of shortening a wire harness that connects a solenoid actuator that moves a movable slide and a control board that controls the solenoid actuator. The image forming apparatus includes a main body housing (2), a transfer roller (53) that rotates about a rotation axis extending in a first direction, a movable slide (120), a solenoid actuator (150), and a control substrate (B1). A solenoid actuator (150) moves the movable slide (120) between a first position and a second position. The main body case (2) has: a first frame (F1) disposed on one side in the first direction with respect to the movable slide (120); and a second frame (F2) disposed on the other side in the first direction. The solenoid actuator (150) is supported by the first frame (F1).

The invention relates to an electromagnetic actuator having a magnetic circuit comprising at least two, preferably three, magnetic circuit elements, wherein the magnetic circuit elements exert an attracting or repelling force on one another such that the actuator effects a movement, wherein the position of at least one of the magnetic circuit elements relative to another magnetic circuit element can be adjusted in order to influence the actuator rigidity.

The utility model relates to an electromagnetic actuator. The electromagnetic actuator comprises an electromagnetic field generator, a permanent magnet, an armature, a front magnetic pole and a rear magnetic pole, the front magnetic pole and the rear magnetic pole are located at the two axial ends of the electromagnetic field generator respectively, and the armature is installed on the radial inner side of the electromagnetic field generator. The armature can be driven by electromagnetic force of the electromagnetic field generator to axially move between a first limit position and a second limit position, the armature abuts against the front magnetic pole at the first limit position and abuts against the rear magnetic pole at the second limit position, and the front magnetic pole and the rear magnetic pole can be magnetized by the permanent magnet to generate magnetic attraction force for attracting the armature. The electromagnetic actuator further comprises a front elastic buffering piece and / or a rear elastic buffering piece, when the armature is located at the first limit position, the armature and the front magnetic pole compress the front elastic buffering piece in the axial direction, and when the armature is located at the second limit position, the armature and the rear magnetic pole compress the rear elastic buffering piece in the axial direction. The electromagnetic actuator provided by the utility model has an improved structure.

The electromagnetic actuator has a coil device having at least one coil core and a coil arranged circumferentially around the coil core, and a movable magnetic armature body as a movable actuator element that is movable by a magnetic field generated by the coil device, the armature body being supported by a support device and movable from a first position to a second position. The bearing device has at least two recesses in a first bearing section formed in the armature body, the recesses being integral with the armature body and configured in the form of at least two at least partially cylindrically shell-shaped recesses spaced apart from one another in the direction of the bearing axis of the armature body, and at least two protuberances in a second bearing section formed on the actuator on the side of the coil device, the protuberances being configured in the form of at least two at least partially cylindrically shell-shaped protuberances spaced apart from one another in the direction of the bearing axis of the armature body, the protuberances engaging in each of the recesses.

An electromagnetic actuator (1) for an assembly, which has a fluid space configured to be fluidically connected to the actuator when the actuator is installed in the assembly, includes a movable armature in an armature space (6). The armature includes a movable armature rod (8). The actuator is configured to fill the armature space (6) with fluid, such as oil, via axial movements of the armature rod that draw fluid from the fluid space into the armature space (6) through a fluid path when the armature rod is fluidically connected to the fluid space.

The invention relates to a control device and a method for determining switching times of an electromagnetic actuator, a device for carrying out the method, and a computer program. To determine a switching time, an actual characteristic curve with a course of a chained electromagnetic flux over the current strength for controlling the actuator is determined. This actual characteristic curve is compared with a reference characteristic curve in order to derive a switching time. By determining switching times in this way, switching times for very short switching durations can also be determined, during which the actuator is switched off before the actuator is fully deflected. The determined switching times can be used, for example, to detect and compensate for fluctuations in the switching behavior of the actuator due to external influences.

A circuit interrupter includes a housing; line conductors; load conductors; an isolation switch assembly including isolation switches disposed within the housing, one solenoid actuator disposed external to the housing and between two line conductors, the one solenoid actuator structured to actuate the isolation switches to be open or closed based on a command signal, and an insulating connector connecting the isolation switches and the one solenoid actuator; and a power electronic module disposed within the housing and including a controller and electronic interrupters connected to the controller, the isolation switches and the load conductors, the controller structured to generate and transmit a control signal comprising the command signal to the electronic interrupters or the solenoid actuator, the electronic interrupters structured to allow the current to flow during normal operation and interrupt the current from flowing to the load in the event of a fault based on the control signal.

An image forming apparatus includes: a main housing; a transfer roller rotatable about an axis extending in a first direction; a fixing device; a movable chute positioned between the transfer roller and the fixing device in a conveying direction; and a solenoid actuator. The movable chute is configured to guide the sheet, and is movable between: a first position; and a second position at which a downstream end in the conveying direction of the movable chute is positioned further downward relative to the downstream end of the movable chute positioned at the first position. The solenoid actuator is configured to cause the movable chute to move. The main housing includes: a first frame positioned further toward one side in the first direction relative to the movable chute and supporting the solenoid actuator; and a second frame positioned further toward another side in the first direction relative to the movable chute.

An electromagnetic actuator (10) comprising an oscillator (12) with at least one magnet (14) and a stator (16) with at least two magnets (18). The oscillator (12) has an oscillator north pole and an oscillator south pole. The oscillator (12) is mounted at a pivot point (20) such that, due to magnetic excitation by the stator (16), the oscillator (12) performs an oscillating rotational movement or a wobbling movement around the pivot point (20). Furthermore, the stator (16) has a first stator north pole, a second stator north pole, a first stator south pole, and a second stator south pole. The stator (16) and oscillator (12) are arranged in such a way that a stator north pole and a stator south pole magnetically act on the oscillator north pole and / or the oscillator south pole in such a way that the oscillator moves in the direction of motion.

The invention relates to a shut-off valve (1) having an electromagnetic assembly (2) comprising an electromagnetic actuator (12) having an electromagnetic coil (6) and an armature (7) which is preloaded by a spring element (9) with a preloading force acting in the closing direction, the armature (7) for opening the shut-off valve (1) counteracting the preloading force of the spring element (9) by a magnetic flux, the armature (7) is movable in an opening direction along a movement axis (10) in order to release a fluid connection between the fluid inlet (4) and the fluid outlet (5), which fluid connection is cut off if there is no magnetic flux, by means of a magnetic force acting on the armature (7). In order to functionally optimize the shut-off valve (1), the electromagnetic assembly (2) is structurally implemented in such a way that a targeted asymmetric magnetic force distribution with respect to the movement axis (10) of the armature (7) is obtained.

The invention is suitable for the technical field of unmanned vehicle transportation, and particularly relates to a device for reducing shaking of an unmanned vehicle in liquid transportation, which comprises a shaking reducing device base, a first layer of tray, a second layer of tray, a second layer of tray, a third layer of tray, a fourth layer of tray and a fourth layer of tray, the first-layer tray is connected with a second-layer tray through a second damping assembly, an electromagnetic actuator is arranged between the first-layer tray and the second-layer tray, a first displacement sensor is fixedly arranged on the second-layer tray, and the shaking reduction device base is installed on the unmanned vehicle; the electromagnetic actuator executes the corresponding control action according to the vehicle speed and the relative displacement between the container and the unmanned vehicle, when liquid goods are transported, the driving risk caused by shaking is remarkably reduced, safe transportation of the goods is ensured, the uncertainty of the goods quality can be effectively dealt with, and under the condition of different goods loads, the safety of the liquid goods is ensured. And the shaking reduction device always keeps the optimal performance, and the safety and the transportation stability of goods are improved.

A method for diagnosing an operating state of a switching device including separable contacts, which are driven by an electromagnetic actuator including a coil connected to an electronic control device, and sensors, which are configured to measure an intensity of a coil current and a coil voltage. The method comprises:a) receiving an order to close via the electronic control device;b) controlling the electromagnetic actuator so that it closes;c) measuring and recording the coil voltage and coil current values;d) calculating and recording values of a magnetic flux through the coil, by integrating the recorded values of the coil current, the coil voltage and resistance and inductance values of the coil; ande) evaluating and recording positions of a core of the electromagnetic actuator according to a data table, which is previously recorded in the electronic control device and which defines a bijective relation between the position of the core, the magnetic flux and the coil current.