126 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.

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 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 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.

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.

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 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.

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 has a coil at least partially surrounding an axis and an armature sleeve at least partially extending through the coil. The armature sleeve includes a longitudinally extending wall extending substantially parallel to the axis and an end portion extending inwardly at an end of the longitudinally extending wall. The armature is slidably supported in the armature sleeve for movement along an axis between at least a first actuation position and a second actuation position. The armature has an armature body having an outer longitudinal surface facing the longitudinally extending wall and an end surface facing the end portion of the armature sleeve. The longitudinally extending wall is in sliding fit with an outer longitudinal surface of the armature. On the armature, an oil storage space is formed in an intersection region between an outer longitudinal surface and an end surface of the armature.

The invention discloses a wind tunnel magnetic suspension balance control system and control method. The system comprises a multi-axis synchronous controller, an eddy current displacement sensor array, a power amplifier and an electromagnetic actuator array. The eddy current displacement sensor array is used for acquiring each degree-of-freedom position of the model; the electromagnetic actuator array and the power amplifier are used for generating electromagnetic force so as to control model displacement; the eddy current sensors and the electromagnetic actuators are arranged in an independent differential mode, electromagnetic force and displacement coupling between components can be reduced, linear control is improved, and therefore the aerodynamic force measurement precision is improved; the multi-axis synchronous controller takes the control target of maintaining the model at the absolute geometric center of each electromagnet group, adopts a composite decoupling control strategy, solves aerodynamic force by monitoring the current variation of a power amplifier, supports online reconfiguration of control parameters, and realizes wide-range and high-precision measurement. According to the invention, low-coupling and high-precision control of the balance system in the wind tunnel based on differential active magnetic suspension is realized.

A heat pump system for a vehicle, comprising: a compressor (1a), compressing a refrigerant; a refrigerant circuit, forming a closed-loop flow path of the refrigerant; a plurality of switching valves, comprising at least one of a 2 / 2-way valve, a 3 / 2-way valve, and a 4 / 2-way valve, wherein the 2 / 2-way valve is configured to be controlled to block or open the flow path, the 3 / 2-way valve is configured to be controlled to switch the flow path, and the 4 / 2-way valve is configured to be controlled to reverse heat exchange; and a first pilot valve (19), simultaneously controlling at least two of the plurality of switching valves. By using the heat pump system, the total number of solenoid actuators and the number of valves can be decreased. Thus, the mounting space is reduced, and the workload for wiring and controller calibration is reduced.

The disclosure relates to an electromagnetic propulsion system(lOO). The system comprises a vehicle(102), a modular road(114), and a network of communication towers(124). The vehicle(102) includes a first magnet(104) and a second magnet(106) positioned on the vehicle underbody(103) to facilitate linear and lateral movement, respectively, when energized by an external electromagnetic force. A steering control interface(108) and an acceleration control interface(HO) in the vehicle (102) generate corresponding signals, which are processed by an ECU(112). The modular road(114) integrates an array of sensors(116) and electromagnetic actuators(120), with electromagnets(122) embedded beneath the surface to interact with the vehicle's magnets(104, 106) for propulsion. Communication towers(124) house a master- controller(126) that processes steering, acceleration, and location signals to activate actuators(120) via the road's control unit(118), enabling controlled vehicular movement.

1. The name of the design product: low-power electromagnetic actuator (A08C actuator). 2. The use of the design product: electromagnetic actuator for fuel injection quantity adjusting device of diesel engine. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view 1.

The present invention relates to a method for controlling a fuel injector (1) of an internal combustion engine with a magnetic actuator (10) for actuating an outwardly opening valve element (4, 6), wherein the magnetic actuator (10) has a magnetic coil (3) and a magnetic armature (2) which is operatively connected to the valve element (4, 6), and the magnetic coil (3) is configured to be supplied with a current in order to open the valve element (4, 6), the method comprising determining a target control end and a target control duration of the magnetic actuator (10) based on a target control start of the magnetic actuator (10) and a target fuel quantity; determining a cylinder pressure expected to act on the valve element (4, 6) at the target control end of the magnetic actuator (10);Determining the expected stroke profile of the valve element (4, 6) during a holding current phase of the solenoid coil (3) as a function of the determined cylinder pressure expected to act on the valve element (4, 6) at the target actuation end. If the expected stroke profile exhibits a maximum stroke of the valve element (4, 6) during the entire holding current phase of the solenoid coil (3), the solenoid actuator (10) is actuated with the determined target actuation duration and the determined target actuation start time. If one or more values ​​of the expected stroke profile during the holding current phase of the solenoid coil (3) are less than the maximum stroke of the valve element (4, 6), the determined target actuation duration and / or the determined target actuation start time are adjusted, and the solenoid actuator (10) is actuated with the adjusted target actuation duration or the adjusted target actuation start time.

Electromagnetic actuator for a hydraulic directional control valve, comprising: - a housing (08) with which the actuating unit can be attached opposite the directional control valve, - a coil (01) arranged in a coil former (03), - an anchor (09) which is arranged to be axially displaceable in the actuating unit, - and a seal (13, 24) between the housing (08) and the coil body (03), which has a circumferential circular groove (27) for receiving the seal (24), characterized in that the coil body (3) has a holder (26, 28) for holding the seal (24) during assembly of the actuating unit, wherein: - the holder (26, 28) is formed by an undercut (28) of an inner wall of the groove (27), into which the seal (24) can be inserted by elastic deformation, - the coil body (03) has a hollow cylindrical basic shape (21) and the support (26, 28) is formed on a base surface of the hollow cylindrical basic shape (21), - the anchor (09), a yoke (04) and a pole core (07) are arranged in the cavity of the hollow cylindrical base form (21), - and the inner wall of the groove (27) is formed segmentally with respect to its direction of rotation.

The electromagnetic actuator assembly (101) comprises at least one first electromagnetic actuator (BV), the first coil assembly (201) having at least one first coil core (202) and first coils (203, 204), and a movable magnetic first armature body (208), the first armature body (208) being movable from a first position to a second position (149) by a magnetic field generated by the first coil assembly (201), in which the first armature body (208) is attracted towards a first surface (205) arranged opposite the first armature body (208) and in contact with the first coil core (202). (BV), and at least one second electromagnetic actuator (EV, AV), comprising a second coil assembly (301) having at least one second coil core (302) and second coils (303, 304), and a movable magnetic second armature body (308), the second armature body (308) having a damping device (309) provided on the second armature body (308), movable from a first position to a second position (149) by a magnetic field generated by the second coil assembly (301), in which the second armature body (308) is attracted towards a second surface (305) and abuts against the second surface (305) by the damping device (309). In this case, the first surface (205) and the second surface (305) are formed to have the same structure.

The utility model discloses a novel electric unlocking glove box driving mechanism and a glove box. The novel electric unlocking glove box driving mechanism comprises a lock rod rotating disc, a left side lock rod, a right side lock rod and an electric unlocking component. The lock rod rotating disc is installed on the glove box frame and provided with a base plate, a rotating disc limiting rib and symmetrical rotating bosses at the two ends. One end of the left lock rod and one end of the right lock rod are connected to the rotating boss, and the other ends are provided with lock tongues. The glove box frame is correspondingly provided with lock tongue matching holes. The electric unlocking component comprises an electromagnetic actuator and a magnet part, the left lock rod is provided with the magnet part, the electromagnetic actuator is installed on the glove box frame, an electromagnetic part faces the magnet part, and an abnormal sound prevention rubber part is arranged in the middle. When the electromagnetic part is powered on, the electromagnetic part and the magnet part repel to push the left side lock rod to move leftwards, the left side lock rod drives the right side lock rod to move rightwards through the lock rod rotating disc, the spring bolt is separated from the spring bolt matching hole, and unlocking of the glove box is achieved. And the stability of the driving mechanism is improved.

The application provides an electromagnetic actuator, which comprises a ring-shaped electromagnetic assembly, a push ring is coaxially sleeved in the inner ring of the electromagnetic assembly, the push ring moves along the axial direction under the drive of the electromagnetic assembly, the outer wall of the push ring is attached to the inner wall of the inner ring, and the radial position of the push ring is determined by the inner wall of the inner ring when the push ring moves along the axial direction. The electromagnetic actuator provided by the application can keep the stability of the axial movement of the push ring by using the attachment and guidance of the inner wall of the push ring and the inner ring of the electromagnetic assembly. The radial position stability of the push ring can be kept without adding a coaxial sleeve part attached to the push ring and without relying on an external coaxial part, so that the electromagnetic actuator provided by the application is more integrated and smaller in structure.

The present utility model relates to a safety lock for emergency devices in transport vehicles, said safety lock comprising at least one solenoid actuator (1) connected to a blocking piece (2) fastened to the end of the solenoid shaft (11). Said solenoid (1) is enclosed by a casing (12) with orifices (121) for fastening. The upper portion of a fastening plate (3) is attached to the casing (12). The plate (3) contains holes (31) corresponding to the orifices (121) and the plate (3) is fastened to the casing (12) by means of a fastening element. The lower portion of said plate (3) also contains holes (32) corresponding to the orifices made in the structure (E) of the mechanism (M); thus, by means of fastening elements, the plate (3) attaches to the structure (E) and consequently fastens the solenoid (1) to the mechanism (M).

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.