161 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 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.

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.

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.

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.

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.

The invention relates to an electromagnetic actuator (50) for a transmission system comprising: - a base (51) and an external housing (52) defining a hollow housing (50a); - a solenoid (57) located inside the housing; - a closing cover (59) attached to the base (51) to form an annular opening in the housing, said closing cover covering one of the lateral faces of the solenoid; - a pusher piston (54), cylindrical in shape, comprising a piston body (54a) and a pusher portion (54b), which is axially movable within the housing between a retracted position and an extended position in which the piston body (54a) bears against the closing cover and the pusher portion (54b) passes through the annular opening. Figure for the abstract: Fig. 3

The invention relates to the technical field of high-pressure valves, in particular to a low-power-consumption bistable electromagnetic actuator for a valve, which comprises a casing main body for accommodating other parts of the electromagnetic actuator, introducing a control wire and allowing an output component to penetrate out; the stator assembly comprises annular coil devices which are symmetrically arranged in the axial direction and generate armature magnetic flux to control an output component to move transversely, and control wiring to control the time sequence of the armature magnetic flux generated by the coil devices. The middle iron core assembly comprises a permanent magnet device capable of generating permanent magnetic flux, and the permanent magnet device is located in the symmetrical middle of the symmetrically-arranged annular coil device and used for conducting electromagnetic fixing on the output component after transverse movement is finished. The armature assembly is used for driving the output component to retract into or penetrate out of the machine shell body under the action of armature magnetic flux to execute valve switch control action, and the armature assembly is arranged in the stator assembly and penetrates through the middle iron core assembly. According to the invention, a novel composite magnetic circuit under the dual action of a constant magnetic source and an electromagnetic field is constructed, so that bidirectional active switching between steady-state positions is realized.

The application discloses a linear electromagnetic actuator integrating sensing and executing, which comprises a rotor, a guide rail and a stator; the guide rail is installed on the stator; the guide rail is provided with a movable groove, and the rotor can move in the movable groove. The stator comprises a stator base plate, an inductor coil and a driving coil; the inductor coil is integrated on the back of the stator base plate, and the driving coil is installed on the front of the stator base plate. The inductor coil and the magnetically conductive rotor base plate form an inductor system, when the rotor moves under the action of the driving coil, the inductance will periodically change with the position of the rotor. The position detection of the motor can be carried out based on the periodic change of the inductance, and the speed feedback control of the electromagnetic actuator is facilitated.

The invention discloses a tactile feedback electromagnetic actuator based on ferrofluid. The performance of the electromagnetic actuator is enhanced by using the ferrofluid. The high thermal conductivity of the ferrofluid is beneficial to heat dissipation, and the parametric magnetic performance of the ferrofluid reduces the magnetic resistance of an electromagnetic circuit, so that the generated force is increased. Due to the fact that the heat dissipation problem is solved, the tactile feedback electromagnetic actuator based on the ferrofluid can be compact in layout, the size of the tactile feedback electromagnetic actuator can be designed to be equal to the size of a small handheld object or the fingertip of an adult, and the tactile feedback electromagnetic actuator can be easily integrated into various devices. In addition, two axially aligned permanent magnets and a copper electromagnetic coil are wound around the high-permeability electromagnetic iron core. According to the design, larger force is generated under the condition that the size is not increased, and compared with a traditional electromagnetic actuator, the electromagnetic actuator can be operated in a wider frequency range and can generate continuous force, instantaneous force or oscillating force, and the wide sensing capacity of human touch sense is simulated.

The utility model discloses an electromagnetic actuator, which relates to the field of actuators and comprises a cylinder body, the top of the cylinder body is connected with a front cover, the bottom end and the top end inside the cylinder body are respectively provided with a lower electromagnetic pole and an upper electromagnetic pole, a piston ring is movably connected between the lower electromagnetic pole and the upper electromagnetic pole inside the cylinder body, and the piston ring is made of iron. And one end of the piston ring is connected with an execution rod, and the execution rod movably penetrates through the middle neutral gear of the upper electromagnetic pole and movably penetrates out of the front cover. According to the electromagnetic attraction type execution mode, the electromagnetic pole is installed at the top end of the bottom end, the iron piston ring is installed at the middle execution end and connected with the execution rod, when one end of the top end or the bottom end is magnetized, a magnetic field is attracted into the iron piston ring, and the execution rod stretches out or retracts back. And high-performance application is realized in a production environment with extremely high requirements or in a severe environment.

A solenoid actuator for a hydraulic valve having a one-piece core tube and a method for manufacturing a one-piece core tube for use in a solenoid valve arrangement, the one-piece core tube presenting a substantially cylindrical body (2) made of a magnetic metallic material and defining an axis of rotation (9). The single-piece core tube is axially divided into a rod section (3), a transition section (5) and a tube section (7), which is formed by a blind hole (8) in the core tube. A proximal end of the blind hole is formed by the transition section. An armature (35) is accommodated in the tube section in a displaceable manner in the direction of the axis of rotation. The outer diameter of the cylindrical body in the transition section retracts radially to form a magnetic flux offset groove (20) such that the metal wall thickness in the transition section is less than the metal wall thickness in the tube section. According to the invention, the magnetic flux deviation groove is filled with a cast or molded plastic material (10) up to the outer diameter of the cylindrical body. The blind hole in the tube section is connected to the rod section by a pin guide hole (4), wherein the two holes have different diameters. A plunger (37) is arranged in the pin guide hole in the rod section and is movable by means of the armature. Further, a coil (32) surrounds the one-piece core tube in the rod section, the transition section, and the tube section.

A solenoid actuator 1 (1A, 1B) includes: a coil 3; a first stator 10 and a second stator 20 disposed with an air gap 11 therebetween in an axial direction so as to form a magnetic path 4 around the coil 3; and a mover 50 configured to move in the axial direction toward the second stator 20 from an original position radially inward of the first stator 10 by a magnetic force generated by energizing the coil 3. The first stator 10 includes: a first yoke 14; and a first cylindrical member 30 fixed to an inner peripheral side of the first yoke 14 and forming the air gap 11.

A differential drive system for a vehicle includes a differential drive device, a dog clutch device, and an electromagnetic actuator. The axis of rotation of the differential drive device is situated outside of the annular electromagnet of the electromagnetic actuator.