224 results about "Electromagnetic actuator" patented technology

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.

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.

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 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.

An electromagnetic actuator assembly, integrated within a boring tool, for controlling unwanted machining vibration, comprising an outer tubular oscillating mass made of ferromagnetic material, through which the magnetic flux can pass; an inner stator that comprises an electromagnet assembly, located at the center of the tubular oscillating mass, for applying a controllable magnetic field to the oscillating mass; one or more damping elements, each having one or more springs and / or a damping material with predetermined stiffness and damping properties (such as a polymer or oil); a controller for providing a desired current to the electromagnets of the electromagnet assembly to obtain the controllable magnetic field; a holder for allowing the rotation of the electromagnet assembly to a desired angle, for stimulating the oscillating mass to apply a damping force, based on a combination of the magnetic field and stiffness and damping properties, which is aligned with the direction of the unwanted vibration.

The application 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 testing method. A main control computer of the bench is used for configuring test task parameters, coordinating operation of each subsystem, and processing test data; a high-pressure hydrogen gas supply subsystem contains an adjustable pressure hydrogen gas source and a pressure closed-loop control module, can apply accurate controllable hydrogen gas pressure to an inlet end of a measured system according to test task parameters; a multichannel valve state acquisition subsystem acquires valve inlet and outlet pressure, valve body surface temperature and vibration spectrum data in real time through a pressure, temperature and vibration sensor array arranged at each valve, and transmits the data to the main control computer; a valve action driving subsystem contains a high-speed electromagnetic actuator array and a displacement feedback module, and can drive each valve to execute a preset opening degree sequence and opening and closing frequency; and a durability evaluation subsystem is embedded in the main control computer, calculates valve cumulative damage degree, and predicts a remaining service life.

According to the ship stabilization system based on the electromagnetic actuators and the control method, the upper electromagnetic actuator, the lower electromagnetic actuator, the left electromagnetic actuator and the right electromagnetic actuator serve as executing mechanisms and are arranged on the upper portion, the lower portion, the left portion and the right portion of the central axis of a ship respectively. Rapid response in a full-wave period range is achieved, hydraulic oil or water tank liquid is not needed, a pure electrification scheme is adopted, energy consumption is low, occupied space is small, maintenance convenience is high, and an excellent stabilization effect is achieved; according to the method, actual current output values of the upper electromagnetic actuator, the lower electromagnetic actuator, the left electromagnetic actuator and the right electromagnetic actuator can be solved according to attitude signals collected by a ship, inherent parameters of the ship and a ship rolling kinetic equation, and the service life balance of the electromagnetic actuators and the reliable stabilization effect of the system are achieved. And the method is of great significance in improving the safety and comfort of the ship.

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 invention discloses a bionic underwater robot based on electromagnetic drive flexible hinge jet propulsion and a motion control method of the bionic underwater robot, and belongs to the technical field of bionic actuators and robots. The multiple electromagnetic actuators arranged in a matrix mode are sequentially connected to form a hinge structure, every two vertically adjacent electromagnetic actuators are symmetrically arranged, the multiple electromagnetic actuators are all arranged on the rear side of the fairing and connected with the fairing through connecting pieces, and the multiple electromagnetic actuators are independently controlled; the comprehensive phase difference and the reversing time difference of the multiple electromagnetic actuators are controlled through the electromagnetic driving controller, differential propulsion is achieved, and flexible steering and efficient movement are achieved. The overall structure simulates the jellyfish appearance design, the appearance design conforming to the flowing resistance reduction characteristic is adopted, the resistance during movement in water can be effectively reduced, the electromagnetic driver is used for generating power, the annular flexible structure is extruded to enable a fluid medium to be rapidly sprayed out, and efficient underwater propelling of the micro-robot is achieved.

The present invention relates to an operating element comprising: a mounting portion; an actuating member supported at the mounting portion in such a way that it is rotatable about a rotation axis by means of a support member, for rotational adjustment by an operator; wherein the support member is further configured to support the actuating member in a restricted axial direction, preferably with a reset mechanism; a detection device for detecting at least the rotational adjustment of the actuating member; an electromagnetic actuator acting between the mounting portion and the actuating member and generating tactile feedback; a control unit electrically connected to the electromagnetic actuator, configured to apply an electrical control signal to the electromagnetic actuator to cause deflection of the actuating member in the axial direction as tactile feedback; wherein the electromagnetic actuator has at least one permanent magnet fixed at the actuating member and an annular coil fixed at the mounting portion; and wherein the annular coil is arranged concentrically with an air gap and engages with the air gap via an opening.

Blood pump system comprising: - a blood pump (1) comprising a discharge structure (2) which is pneumatically driven for alternately applying suction and pressure in operation, in particular for cyclically driving fluid through a blood pump line (3) discharge, wherein the discharge structure (2) is preferably a membrane; - a pneumatic driver (10) for pneumatically driving the discharge structure (2) of the blood pump (1) via a pneumatic control line (5); wherein the pneumatic driver (10) comprises 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) relative to the cylinder (12). The invention also relates to a pneumatic driver (10) and to a method for driving a blood pump.

This utility model discloses an electromagnetic actuator, including a housing mechanism, a fixed iron core, a moving iron core, and an electromagnetic component. The housing mechanism includes an outer shell and an end cap. One end of the outer shell has a mounting hole, and the other end of the outer shell is fixedly connected to the end cap, forming a mounting cavity. The fixed iron core passes through the mounting hole and is inserted into the mounting cavity. The fixed iron core has a through hole. The moving iron core is slidably disposed in the through hole. The electromagnetic component includes a winding frame and a coil. The winding frame is arranged in the mounting cavity, and the coil is disposed on the winding frame. The coil is used to generate a magnetic field. The fixed iron core is sealed to the outer shell at the mounting hole. Both ends of the winding frame have first positioning grooves. The two first positioning grooves are respectively equipped with a first sealing ring and a second sealing ring. The first sealing ring abuts against the end face of the outer shell near the mounting hole, and the second sealing ring abuts against the end cap. This electromagnetic actuator not only improves sealing performance but also facilitates manufacturing and helps reduce production costs.

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.

Provided is a technique capable of processing a substrate in a short time. A processing apparatus (1) includes: a stage (10) configured to hold a substrate (Wf) such that a surface to be processed of the substrate faces upward; a stage rotation device (20) configured to rotate the stage; a plurality of heads (30a, 40a) on which processing pads (Pd1, Pd2) having an area smaller than the area of the surface to be processed of the substrate are respectively mounted; a plurality of heads; a plurality of head rotating devices (50a, 55a); a plurality of pressing devices (60a, 65a) each having an electromagnetic actuator configured so as to apply a pressing force to each of the plurality of heads by means of an electromagnetic force; and a plurality of swing devices (70a, 80a).

The invention relates to a gas injector for injecting a gaseous fuel, comprising: an electromagnetic actuator (2) having an armature (20), an inner pole (21) and a coil (22); a closing element (3) having a valve needle (31) and an armature bolt (24), the valve needle (31) releasing and closing a gas path (14) arranged on a sealing seat (11) at a first end of the gas injector, the armature (20) being connected to the armature bolt (24), and the armature bolt (24) being operatively connected to the valve needle (31); a closed lubricant chamber (4), which is filled with a liquid (40) as a lubricant and with a gas (41) and in which the armature (20) and the armature pin (24) are arranged, the lubricant providing a lubricating action in the lubricant chamber (4); a restoring element (10) which resets the closing element (3) into a closed initial position; a damping device (6) which is arranged in the lubricant chamber (4), the damping device (6) being provided for damping a closing movement of the closing element (3); a compensation space (5) which is part of the lubricant chamber (4) and in which a liquid (40) and a gas (41) are arranged; and an anti-mixing device (100) arranged in the compensation space (5) and arranged for preventing mixing of the liquid (40) and the gas (41) in order to prevent formation of foam in the compensation space (5).

A kind of virtual track device for magnetic levitation vehicle track coupling vibration test, including elastic support mechanism, track, vertical sliding support mechanism, electromagnet, monitoring mechanism and electromagnetic drive mechanism;Elastic support mechanism is connected on the workpiece mounting surface of the top and bottom of frame;Track is laid in the middle of frame by elastic support mechanism;Vertical sliding support mechanism includes sliding assembly vertically connected in the middle of frame and support arm mounted on sliding assembly;Electromagnet is suspended below track by support arm;Monitoring mechanism includes first gap sensor mounted on electromagnet, first accelerometer, second gap sensor mounted on the top of frame and second accelerometer mounted on track;Electromagnetic drive mechanism is installed on the bottom of frame.The invention drives the track supported by spring to move in vertical direction by electromagnetic actuator, to simulate the movement of bridge along vertical direction driven by electromagnetic force in virtual setting, to investigate the suspension stability of electromagnet under this working condition.

The invention relates to the technical field of electromagnetic actuators, in particular to a symmetric two-degree-of-freedom linear electromagnetic actuator, which comprises a permanent magnet assembly device and a coil assembly device, and is characterized in that the permanent magnet assembly device comprises a magnetic circuit part and a cavity part; the magnetic circuit part comprises a magnetic yoke which plays a role in conducting a magnetic circuit and supporting a structure, and two groups of magnetic pole assemblies are arranged in the magnetic yoke; the magnetic pole assembly comprises a permanent magnet, a pole shoe and a protection ring; the magnetic pole face of the permanent magnet coincides with the plane of the pole shoe, and the permanent magnet and the pole shoe are sleeved with the protection ring. And the two groups of magnetic pole assemblies are symmetrically arranged. According to the integrated frame structure magnet yoke, a magnetic circuit is conducted, the permanent magnet assembly device is supported at the same time, and the compactness of the whole actuator structure is facilitated.

Device (40; 90) for determining the cause of an abnormality, which is used in a vehicle (VC; VC(1)) with an electromagnetic actuator (28), comprising: a storage device (46; 46, 96) configured to store characteristic map data, which are data for defining a characteristic map, wherein the characteristic map has a current variable (ΔI), which is a variable indicating a current actually flowing in the electromagnetic actuator (28), as an input variable, and a cause variable, which is a variable indicating the cause of an abnormality of an on-board unit having the electromagnetic actuator (28), as an output variable; and an implementing device (42, 44; 92, 94) which is configured to perform a detection process (S46, S48; S100) for detecting a value of the input variable based on a detection value from a sensor installed in the vehicle (VC; VC(1)) and a calculation process (S52) for calculating a value of the output variable by inputting the value of the input variable into the map, wherein the on-board unit is a gear-shifting device (26) that changes a gear ratio between a rotational speed of a drive shaft of a drive machine (VC; VC(1)) installed in the vehicle and a rotational speed of drive wheels; the electromagnetic actuator (28) comprises a solenoid valve (28a) of the gearshift device (26); and the current variable (ΔI), which is the input variable, contains a variable that indicates a current flowing in the solenoid valve (28a) during one switching period of the gear ratio in the gear shifting device (26).

A high-voltage contactor includes an actuator having a coil and an armature which is movable via the coil, a housing having housing body and a housing cover which together enclose a contact chamber, and a contact bridge which is electrically conductive. The housing cover is connected to the housing body in a gas-tight manner via an ultrasonic-welded connection having a welding joint. The housing cover comprises a joining groove. The contact bridge is arranged in the contact chamber to be displaceable by the electromagnetic actuator into a contact position where a first stationary contact element is electrically connected to a second stationary contact element via the contact bridge, and into an open position in which an electrical contact is disconnected. A housing body wall protrudes into the joining groove. The welding joint of the ultrasonic-welded connection is formed by the joining groove and the housing body wall.

A low-pressure fuel injector (1) for indirect fuel injection into an intake duct of an internal combustion engine, the injector being provided with: - an upper body (2) and a lower body (3), in which the lower body (3) is provided with first (3a) and second through holes (3b) for the gas inlet inside the injector (1), - a cap (4, 40) provided with a plurality of openings (4a, 40a) passing fuel from the injector (1) to the intake duct, - a needle (5) configured to unlock and close the openings (4a, 40a) of the cap (4, 40) and to open towards the inside, and - an electromagnetic actuator (9) for actuating the closing element (5), the injector (1) also having a double fuel flow path in which the edges along the two paths are chamfered or radiused.

These are high-voltage contactors (10) or high-voltage relays with an electromagnetic actuator (12) having a movable armature (22), a housing (58) which delimits an inner contact chamber (42), a first contact element (54) which projects into the contact chamber (42), a second contact element (56) which projects into the contact chamber (42), an actuating rod (38), a contact bridge (44) which is arranged on the actuating rod (38) and which can be displaced with the armature (22) and the actuating rod (38) by means of the actuator (12) at least into a first position in which the first contact element (54) is electrically connected to the second contact element (56) via the contact bridge (44), and which can be displaced with the actuating rod (38) and the armature (22) via a spring element (36) into a second position in which an electrical contact between the first contact element (54) and the second contact element (56) is interrupted is and a rod head (48),which is formed on the side of the actuating rod (38) opposite the anchor (22), is known. To avoid a hard impact between the rod head (48) and the contact bridge (44) when the electrical contacts are separated, it is proposed that the actuating rod (38) is loaded against the armature (22) via the spring element (36), with an elastic element (76) arranged between the contact bridge (44) and the rod head (48).

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.

This motor includes: coils (3a to 3i) of a plurality of electromagnetic actuators among which the values of one of an electric resistance and an induced voltage constant are different; a movable element (1) being a driven body driven by the coils (3a to 3i) of the electromagnetic actuators; and a current command value determination unit (23) that determines a command value of a current caused to flow through the coil of each of the electromagnetic actuators in order to control an operation of the movable element (1). The current command value determination unit (23) determines the current command value for the coil of each of the electromagnetic actuators, so as to minimize a total sum of copper losses occurring in the coils (3a to 3i) of the plurality of electromagnetic actuators, on the basis of the values of the one of the electric resistance and the induced voltage constant of the coils (3a to 3i) of the electromagnetic actuators.

A damping valve device comprising an electromagnetic actuator having a valve armature for operating a pre-stage valve body in a pre-stage valve, wherein the pre-stage valve operates a main-stage valve of the damping valve device and both valves are embodied as sequence valves, wherein the damping valve device has an emergency operating device having an emergency operating armature and a tension spring which pre-tensions the emergency operating armature in the direction of the main-stage valve, wherein a stop limits the axial adjustment travel of the pre-stage valve body, wherein the stop is formed by a stop spring which is functionally embodied between the emergency operating armature and the pre-stage valve.

The application discloses a mine self-reset mechanical air gauge, which has a base, a mine mechanical air gauge body is installed on the base, a reset button and a clutch switch are arranged on the mine mechanical air gauge body, an electromagnetic actuator support is also installed on the base, and an electromagnetic actuator for automatically triggering the reset button and the clutch switch on the mine mechanical air gauge body is installed on the electromagnetic actuator support. The mine self-reset mechanical air gauge has the advantages that the reset button and the clutch switch can be automatically triggered.

The application discloses a kind of corrosion-resistant iron cobalt alloy strip and its preparation and surface synergistic strengthening method, belong to soft magnetic alloy magnetic material heat treatment field.Corresponding to iron cobalt vanadium alloy magnetic corrosion repulsion, magnetic performance attenuation under salt spray / fuel methanol corrosion, component segregation, annealing difficult to consider magnetic mechanical pain point, optimize Fe-Co-V-Cr-Mo-Nb / Ta / Zr alloy component and build proportioning model;Using double-section vacuum melting, hydrogen homogenization, multi-pass temperature control cold rolling regulation and control grain;Design magnetic and mechanical dual-mode magnetic annealing;Constructing passivation layer-MgO insulation layer-organic-inorganic anticorrosion layer three-layer coating synergistic strengthening.The finished product Bs≥2.2T, Hc≤200A / m, 96h salt spray 150h fuel methanol immersion after magnetic performance attenuation≤3%, adjustable strength, replace VACODUR / VACOFLUX alloy strip, adapt to vehicle-mounted electromagnetic actuator, high-speed motor, ocean device high-frequency transformer scene, mass production stability.

A liquid cryogen dosing head has a liquid cryogen reservoir in communication with a dosing outlet, a dosing valve stem having a lower, distal end configured to selectively open and close the dosing outlet, and an electromagnetic actuator attached to an upper end of the dosing valve stem above the liquid cryogen reservoir and operable to move the dosing valve stem to open and close the dosing outlet. The electromagnetic actuator is disposed above the liquid cryogen reservoir and the dosing valve stem extends through the liquid cryogen reservoir, preferably concentrically, to open and close the dosing outlet by blocking an orifice of the dosing outlet.

The objective is to provide an electromagnetic actuator used in a parking lock mechanism that can be miniaturized while ensuring sufficient thrust force when releasing the parking lock. [Solution] The electromagnetic actuator 100 according to the present invention comprises a main actuator 100a that pushes and pulls a first output shaft 120, and a sub-actuator 100b that pushes and pulls a second output shaft 150. When the protruding direction of the first output shaft 120 is forward and the retracting direction is backward, the second output shaft 150 is positioned on the same straight line as the first output shaft 120 and behind it. The first stroke S1 of the first output shaft 120 is greater than the second stroke S2 ​​of the second output shaft 150, and the rear of the first stroke S1 and the front of the second stroke S2 ​​overlap.

The application relates to the technical field of vehicle suspension, and relates to a linear double-spring electromagnetic shock absorber for vehicles, which comprises an end cover, a damping rod, an upper shock absorber assembly and a linear electromagnetic actuator. The linear electromagnetic actuator comprises a shell, permanent magnet rings, a coil framework and a soft iron ring. The shell is a hollow tubular structure, and the inside of the shell is provided with a plurality of permanent magnet rings arranged in an axial direction. The permanent magnet rings are annular sheet structures. The adjacent two permanent magnet rings are separated by the soft iron ring, and the adjacent two permanent magnet rings are arranged in a same-pole opposite arrangement mode. The damping rod is connected to the top of the end cover. The upper shock absorber assembly is installed between the end cover and the linear electromagnetic actuator. The damping rod penetrates through the linear electromagnetic actuator along the shaft center of the shell. The coil framework is installed on the section of the damping rod located in the inside of the shell. The coil framework is wound with a coil. The electromagnetic shock absorber has wide adaptability, low cost, fast response speed, improved service life of the shock absorber, and further improved smoothness and stability of vehicle driving.