267 results about "Magnetic damping" patented technology

The invention belongs to the technical field of fluid control, and relates to a rotary flow distribution adjusting device and method for aviation. Comprising an inlet shell, an annular impeller, a torsion spring, a valve element, a magnetic damper and an outlet shell. The flow distribution adjusting device is arranged at the pipeline branch position of a liquid pipe network branch system, fluid flows through the annular impeller, the annular impeller generates torsional force to drive the valve element to rotate to change the overflowing sections of the two outlets, continuous adjustment of the flow distribution proportion of different branches is achieved, and the larger the fluid flow speed is, the larger the stress of the annular impeller is. And the valve core is driven to select a larger angle to correspond to different outlet flow distribution conditions. According to the flow distribution adjusting device, the complexity of an adjusting system can be reduced, the flow resistance caused by flow distribution adjustment is reduced, and then the energy consumption of a power source in a liquid system is reduced.

The invention discloses a foamed rubber soft magnetic material and a preparation method, and belongs to the technical field of magnetic composites.The foamed rubber soft magnetic material comprises a rubber base material, air holes and magnetic powder, the air holes are distributed in the rubber base material, and the magnetic powder is distributed in the rubber base material or the air holes; the elastic modulus of the rubber soft magnetic material is smaller than or equal to 5 MPa, the maximum magnetic energy product of the rubber soft magnetic material is larger than or equal to 1 MGOe, the tensile strength of the rubber soft magnetic material is larger than or equal to 4 MPa, and the density of the rubber soft magnetic material is smaller than or equal to 2.0 g / cm < 3 >. By preparing and adding the spherical magnetic powder particles, the performance index of the foamed rubber soft magnetic material can be further improved, the foamed rubber soft magnetic material solves the problem that magnetic damping rubber is low in magnetic performance, the damping effect of a product is remarkably improved, and the foamed rubber soft magnetic material is lighter and thinner and convenient to use and popularize.

The invention belongs to the technical field of dampers, and particularly discloses a nonlinear bidirectional active anti-impact damper which comprises a cylinder body, a load connecting plate, an elastic supporting piece and a magnetic damping assembly, the load connecting plate is installed at one axial end of the cylinder body in a floating mode through the elastic supporting piece, the load connecting plate is connected with a piston rod, and the end of the piston rod extends into the cylinder body; the magnetic damping assembly comprises a magnet and a coil, one of the magnet and the coil is connected to the end of the piston rod, and the other one is connected into the cylinder body. The damper further comprises a displacement sensor and a controller, the displacement sensor is used for detecting displacement data of the load connecting plate, the controller is connected with the displacement sensor and the coil, and the controller is used for controlling the current of the coil so that the coil can cut magnetic lines of force of the magnet to generate magnetic damping force changing nonlinearly along with displacement. The damper can effectively restrain vibration impact, gentle impact resistance is achieved, and the influence of sudden impact force on the service performance of equipment is reduced.

The utility model belongs to a bridge support, and particularly relates to a damping-controllable rigidity-variable shock insulation support. Comprising an upper seat plate, a spherical crown plate, a middle seat plate and a lower seat plate, the upper seat plate and the middle seat plate are positioned and connected through a shear plate and a shear bolt; the limiting mechanism is composed of a limiting check block and a limiting groove, the electromagnetic damping mechanism is composed of a magnet, a high-strength spring and a sheath coil, and the control device is composed of a ground motion sensor, a central processing module and a power supply module. The problems that in the prior art, the overall dimension of a support is too large, and the horizontal rigidity cannot be adjusted and changed once the horizontal rigidity is determined are solved, and the support has the advantages that the overall dimension of the support is small, the horizontal rigidity and damping are adjustable, and cooperative stress under the earthquake working condition of all piers is achieved.

The invention relates to a damping spring device suitable for industry or life, in particular to a magnetic damping spring. The magnetic damping spring comprises a supporting cylinder, a force guiding piston, a force guiding piston blocking piece, a supporting rod and two or more magnets. The force guiding piston blocking piece is arranged on the upper portion of the supporting cylinder. The supporting cylinder is of a cylindrical structure, one end of the supporting cylinder is sealed and is a bottom surface, and the other end is of an opening structure for the supporting rod to penetrate; the lower end of the supporting rod penetrates through the force guiding piston blocking piece to be connected with the force guiding piston, and the upper end extends out of an opening in the upper end of the supporting cylinder. A groove is formed in the inner bottom surface of the supporting cylinder, and a magnet A is placed in the groove; a groove for placing the magnet B is formed in the lower bottom surface of the force guiding piston; the supporting rod can conduct resultant force of vertical vibration generated by axial vibration, horizontal vibration and vertical vibration to the force guiding piston, the force guiding piston drives the magnet B to extrude downwards to generate repulsive force which is gradually increased with the distance space of the magnet A, the repulsive force is used for buffering vertical vibration force conducted by the force guiding piston, and therefore the damping effect is achieved.

The invention belongs to the technical field of electronic parts, and provides a magnetic damping rotation structure and a magnetic damping generation method. The first annular magnetic shaft is fixed on the mounting base, a plurality of first grooves are uniformly formed in at least one end face of the first annular magnetic shaft, and a first magnetic boss is formed between every two adjacent first grooves; the second annular magnetic shaft and the first annular magnetic shaft are coaxially arranged, a plurality of second grooves are evenly formed in the surface of the end, facing the first magnetic boss, of the second annular magnetic shaft, and a second magnetic boss is formed between every two adjacent second grooves; gaps are arranged between the first magnetic bosses and the second magnetic bosses, and the first magnetic bosses and the second magnetic bosses are in one-to-one correspondence and generate attraction magnetic force. When the second annular magnetic shaft rotates at a low speed, the damping value of attraction between the first annular magnetic shaft and the second annular magnetic shaft is changed to generate feedback of light and heavy sections of hand feeling, so that the damping effect is effectively improved, and the damping device can be applied to the fields of mice, keyboards, automobile instrument panels and the like.

The utility model relates to a variable magnetic damping system of a fishing reel, which comprises a swing arm, a supporting component used for bearing the swing arm, at least two first magnets with opposite polarities and an adjusting component capable of adjusting magnetic damping, and the head end of the swing arm is rotatably supported on the supporting component to enable the swing arm to be close to or far away from the wire wheel shaft. The wire winding device is characterized in that the adjusting component comprises a rotating component and a second magnet, wherein the rotating component can rotate relative to the supporting component, and the second magnet is arranged on the rotating component and can be matched with the first magnet; and the second magnet can approach to or be far away from the corresponding first magnet on the swing arm along with the rotation of the rotating component. Different magnetic damping effects are obtained through attraction or repulsion acting force generated by the second magnets on the first magnets at the corresponding positions of the swing arm, the overall structure is simple, adjustment is convenient, the number of brake gears is large, the swing arm does not need to be reset by means of a spring, and manufacturing is more convenient.

The invention discloses a nanocrystal magnetic material and a preparation method thereof, the nanocrystal magnetic material is a magnetic Nb3VSe6 crystal and comprises three elements, namely Nb, V and Se, the metered molar ratio of the three elements is 3: 1: 6, the crystal has a centrosymmetric broken hexagonal layered structure, the space group of the crystal is P6322, V atoms are inserted between two 2H-NbS2 hexagonal layers, the lattice constants a = b = 5.738, and c = 12.018. The magnetism in the material is mainly contributed by positive trivalent Cr ions, the magnetic moment is 3B, the local electron spin S is equal to 3 / 2, and conduction electrons are from unfilled bands of Nb atoms. Due to the unique crystal structure and electronic property, the material shows potential application value in multiple fields, especially in the aspects of high-frequency devices, spintronics elements, magnetic dampers and the like. The Nb3VSe6 single crystal is relatively stable in air, which is a great advantage for practical application.

The utility model discloses a magnetic leveling device of a pendulum bob type laser demarcation device, which comprises a hanging bracket and a pendulum body hung in the hanging bracket, a magnetic damping body consisting of a plurality of magnets is arranged on the hanging bracket according to a Halbach array, and a magnetic field which is made of non-magnetic conductive materials and can cut magnetic lines in a magnetic field generated by the magnetic damping body is arranged on the pendulum body. The utility model aims to provide a damping piece which adopts two different forms of Halbach arrays to generate magnetic damping, and compared with the existing common magnet arrangement scheme, the magnetic flux is obviously enhanced, so that a stronger magnetic damping effect is generated, and the magnetic damping effect is improved. The magnetic leveling device can effectively prevent the swinging body from swinging excessively, so that the leveling time is effectively shortened, the leveling speed and precision of the laser demarcation device are further improved, and the working efficiency is remarkably improved.

The invention discloses an imaging type optical system for a high-intensity magnetic field Fourier infrared spectrum device, which comprises a solenoid superconducting magnet tubular sample cavity for the high-intensity magnetic field Fourier infrared spectrum device, and a non-magnetic damping sleeve arranged in the solenoid superconducting magnet tubular sample cavity, a non-magnetic mirror surface gold-plated optical waveguide is arranged at the upper part in the non-magnetic damping sleeve, a Faraday optical module is arranged at the lower part in the non-magnetic damping sleeve, and an adjustable sample bearing table and a low-temperature thermometer and magnetometer assembly are arranged below the non-magnetic mirror surface gold-plated optical waveguide; the non-magnetic mirror surface gold-plated optical waveguide comprises a light-in waveguide and a light-out waveguide, and the Faraday optical module integrates a switchable reflection module and a transmission module which are respectively adapted to different strong magnetic field Fourier infrared spectrum measurement requirements. The optical efficiency of the high-intensity magnetic field Fourier infrared spectrum device is improved, the problems of high optical loss and scattering interference of a traditional device are solved, and the signal-to-noise ratio is increased.

The invention discloses a bridge electromagnetic inertial mass hybrid control damping system and an overall hybrid control method. The damping system comprises an inertial mass assembly, an electromagnetic assembly, a rigidity assembly and a corresponding parameter adjusting circuit. Wherein the ball screw system is used for converting linear translation into rotation, the inertial mass assembly is used for providing acceleration type inertial mass damping, the electromagnetic assembly is used for providing speed type electromagnetic damping, and the rigidity assembly is used for providing rigidity. In a normal operation stage, a parameter adjusting circuit is utilized, and the purpose of adjusting electromagnetic damping and rigidity values is achieved by changing circuit input, so that semi-active tuning is realized; under the action of an earthquake, circuit input is fixed, so that parameters of the damper are constant, and the anti-seismic robustness of the damper can be improved.

The invention discloses a high-power stepless magnetic damping device and a power control method thereof.The high-power stepless magnetic damping device comprises a magnetic resistance magnetic core mechanism, the magnetic resistance magnetic core mechanism achieves control over high-power stepless magnetic damping according to the electromagnetic damping principle, regulation and control response is fast, continuity of constant-power output is guaranteed, and the high-power stepless magnetic damping device is suitable for large-power stepless magnetic damping. And a circle of Halbach magnet array formed by reinforcing magnets is arranged, so that the field intensity in the unit direction is enhanced, and the generation of high-power magnetic damping is realized. According to the power control method, a static Kalman data fusion updating model is introduced for power updating, speed and accuracy are balanced, a PWM signal is output through a PID controller to adjust the input current of a control coil, and therefore the size of a magnetic field is controlled, control over the size of magnetic damping is achieved, stepless regulation and control are achieved, and the control precision is improved. Therefore, stable output of constant power is ensured.

The utility model belongs to the field of optical equipment, and particularly relates to an automatic opening and closing device for optical testing, the automatic opening and closing device comprises a shutter device provided with the automatic opening and closing device and a receiving lens, the automatic opening and closing device is arranged on a shutter base through a shutter support, the automatic opening and closing device is provided with a light through hole, and the receiving lens is arranged in the axis direction of the light through hole. The receiving lens is arranged on the lens base through the lens support, the automatic opening and closing device is provided with a shading blade, one end of the shading blade is rotationally connected with the mounting shell, the shading blade shields the light through hole when swinging, and the shading blade swings under the control of the transmission device. By arranging the swinging blades with the magnetic damping devices, swinging of the blades is achieved, so that slits for shading and light passing are automatically formed, and the sizes of the slits are adjusted.

The utility model relates to the technical field of damping equipment, in particular to an electromagnetic damping device adopting a halbach permanent magnet array. The method is specifically applied to civil engineering building damping. Comprising a protective shell, and a spring unit, an electromagnetic damping unit and an inerter mass unit are arranged in the protective shell; the electromagnetic damping unit, the inerter mass unit and the spring unit are located on the left side and the right side of the protective shell respectively. According to the electromagnetic damping device adopting the halbach permanent magnet array, relative movement between the halbach permanent magnet array and a conductor is adopted to generate damping force, a mass flywheel and a spring are connected in combination with a gear rack, and mechanical energy is dissipated by generating huge inertial mass and utilizing reciprocating movement of the spring and generating eddy current damping force. According to the device, the spring unit, the inerter unit and the electromagnetic damping unit can operate together through vibration at any end, mechanical energy is consumed, and the purpose of damping is achieved.

The invention relates to the technical field of tungsten filament drawing processing, and provides a fuel gas heating ten-die wire drawing machine and a high-performance tungsten filament drawing process. The fuel gas heating ten-mold wire drawing machine comprises a rack and an electric controller, wherein a magnetic damping pay-off reel, a guide wheel, a natural gas fire grate, a wire drawing mold frame, a cone pulley and a servo wire take-up reel are sequentially arranged on the rack along a wire machining path; the natural gas fire grate comprises ten heating units, an electric proportional valve is arranged on the rack, and the electric proportional valve is in signal connection with an electric controller; a temperature measuring sensor is arranged above the heating unit, the temperature measuring sensor is in signal connection with the electrical controller, and the temperature measuring sensor is used for monitoring the temperature of the wire rod in real time; the high-performance tungsten filament drawing process comprises the following steps: S1, rough drawing; s2, medium drawing; s3, fine drawing; the step S1 is implemented by adopting the fuel gas heating ten-die wire drawing machine; through collaborative innovation of equipment and a process, the effects of improving the strength of the tungsten filament, improving the performance of the tungsten filament and reducing the wire breakage rate are achieved.

The invention relates to the technical field of compaction pile construction, and discloses a pile hole depth measuring device, which comprises a frame body placed on the ground on the outer side of a pile hole; the upper part of the vertical rod is hinged with the frame body through a hinged support; the balancing weight is arranged at the lower end of the vertical rod; the range finder is mounted on the lower side of the balancing weight and faces the bottom of the pile hole; the copper plate is connected to the upper end of the vertical rod; the magnet is mounted on the frame body and positioned on the upper side of the copper plate; a gap is formed between the magnet and the copper plate; the distance measuring instrument supported by the vertical rod is used for measuring the depth of the pile hole, the structure is simple, operation is convenient, a measuring rope does not need to be wound and unwound, the distance measuring instrument can be fast and stable through electromagnetic damping, meanwhile, it can be guaranteed that the measuring direction of the distance measuring instrument is vertically downward all the time, and the measuring accuracy and efficiency are improved.

The utility model belongs to the technical field of vibration generators, and relates to a linear vibration motor and electronic equipment, the linear vibration motor comprises a housing, a vibrator assembly accommodated in the housing, and a stator assembly and an electromagnetic damping member which are fixedly connected with the housing and used for driving the vibrator assembly to vibrate; the magnetic circuit system comprises at least two pieces of side magnetic steel and at least one piece of center magnetic steel, the magnetizing directions of the two adjacent pieces of side magnetic steel are opposite and perpendicular to the vibration direction, the center magnetic steel is clamped between the two adjacent pieces of side magnetic steel, and the thickness of the center magnetic steel is smaller than that of the side magnetic steel in the first direction. The center of gravity of the central magnetic steel is closer to the electromagnetic damping piece than the center of gravity of the side magnetic steel, the magnetizing direction of the central magnetic steel is parallel to the vibration direction, and the polarities of the ends, close to each other, of the central magnetic steel and the two adjacent side magnetic steel are the same. The structure not only can improve the electromagnetic damping effect, but also can maintain the magnetic field intensity on one side of the coil.

The outer circumferential surface (18a) and the inner circumferential surface (18b) of a fixed magnet (18), which is attached to a body (12), comprise cylindrical surfaces each having a uniform diameter. The outer circumferential surface (34a) of a movable magnet (34), which constitutes a movable part (22), comprises a cylindrical surface having a uniform diameter. The inner circumferential surface (34b) of the movable magnet comprises a conical curved surface. The fixed magnet and the movable magnet are magnetized in the axial direction, and the axial polarity of the fixed magnet is the same as the axial polarity of the movable magnet.

The invention provides automatic assembling equipment for a sliding bearing in a magnetic damping guider, and the automatic assembling equipment comprises a guider loading mechanism which comprises an upper guider loading assembly and a lower guider loading assembly which are symmetrically arranged left and right; the bearing loading mechanism is arranged between the upper guider loading assembly and the lower guider loading assembly; the transfer mechanism is arranged at the output end of the bearing loading mechanism; the assembling mechanism is located at the output end of the transferring mechanism and comprises a rotating assembly, a stamping assembly, an output assembly and a removing assembly, and the stamping assembly, the output assembly and the removing assembly are sequentially arranged in the transmission direction of the rotating assembly. Therefore, one device can complete the assembly work of the upper guider and the bearing and the assembly work of the lower guider and the bearing at the same time.

The invention discloses a magnetic performance dynamic compensation method of a magnetic latching relay suitable for a wide temperature range environment, and relates to the field of magnetic performance dynamic compensation, and the method comprises the steps: obtaining the real-time temperature data and real-time load voltage data of the relay, outputting a basic driving energy parameter, and obtaining the real-time temperature data of the relay based on the real-time temperature data; constructing a three-dimensional rigidity potential energy curved surface dimension reduction solution equivalent rigidity coefficient, predicting mechanical collision kinetic energy at the moment that a movable contact is closed, generating a critical rebound energy threshold value, constructing an ideal convergence track meeting physical deceleration constraint, executing inverse dynamics solution, generating a composite step driving waveform instruction, and performing dynamic deformation on the composite step driving waveform instruction. A relay coil is driven by executing the composite step driving waveform instruction, the motion state vector of a movable iron core is calculated in real time through a flux linkage observer, mechanical rebound is recognized, active magnetic damping adjustment is triggered, the movable iron core is forcibly clamped in a magnetic maintaining balance area, a movable contact can be forcibly locked at a conduction position, and the magnetic field is controlled. And a false pull-in fault is thoroughly avoided.

The invention provides a power transmission line vibration suppression device and method based on inertial mass and electromagnetic damping. The power transmission line vibration suppression device comprises a spacer, a connecting frame, an electromagnetic damper, a balancing weight and a transmission mechanism. The electromagnetic damper comprises a permanent magnet assembly and a conductor disc for cutting magnetic induction lines, and the transmission mechanism is connected with the balancing weight and the conductor disc and used for converting reciprocating linear motion generated by the balancing weight under the vibration effect into circular motion in different rotation directions and driving the conductor disc to rotate to cut the magnetic induction lines. According to the device and the method, the balancing weight is adopted to provide directional torque for restraining torsion of the power transmission line, the balancing weight does reciprocating rectilinear motion and drives the electromagnetic damper, so that the damping effect is remarkably improved, vertical vibration energy is consumed, vibration can be rapidly stopped, vertical vibration and torsional vibration of the multi-split power transmission line are restrained at the same time, and the reliability of the device is improved. Damage to the sub-conductors, the sub-conductor spacers and the phase-to-phase spacers is avoided, and safety and stability of power supply are guaranteed.

The utility model provides a yaw electromagnetic damping device and a yaw system of a wind generating set, the yaw electromagnetic damping device comprises: an electromagnet arranged on one of a tower drum and a main frame; the magnetic matching piece is arranged on the other one of the tower drum and the main rack, and the electromagnet and the magnetic matching piece can form magnetic attraction and / or repulsion in a power-on state; the power supply device is electrically connected with the electromagnet and can provide current for the electromagnet; and the control device is in signal connection with the power supply device and can control the output current of the power supply device. According to the yaw electromagnetic damping device provided by the embodiment of the invention, hydraulic oil leakage and dust cannot be generated, and environmental protection is facilitated; the friction plate or the sliding pad does not need to be replaced in the life cycle of the unit, so that the workload of the maintenance personnel is reduced, and the operation and maintenance cost is reduced; damage to the large yaw gear ring and the yaw motor can be reduced, and consumption of spare parts of a unit is reduced.

The invention discloses a vibration measurement and control device of a frame type multilayer vibration isolation platform. The vibration measurement and control device comprises a device body part, a vibration isolation damping part, a quasi-zero stiffness coupling part, an upper functional assembly part, a flexible beam part, a vibration detection part and a control part. The multi-layer strong coupling link of vibration excitation, magnetic damping vibration isolation, the quasi-zero stiffness system, the rotating platform and elastic connection is realized on the same platform, so that the coupling transmission and modal interaction can be conveniently researched.

The utility model discloses a linear motor, which comprises a shell, a vibrator assembly and a stator assembly, the vibrator assembly comprises a mass block and a magnetic circuit assembly fixed with the mass block, the magnetic circuit assembly comprises at least two side magnets and at least two center magnets which are different in thickness and are positioned between the two adjacent side magnets, the side magnets and the center magnets are arranged in the first direction and the second direction respectively, the magnetizing directions of the two center magnets are opposite and parallel to the first direction, and the magnetizing directions of the two adjacent side magnets are opposite and parallel to the second direction. The stator assembly comprises a coil and a conductive damping piece, the coil and the conductive damping piece are distributed on the two sides of the magnetic circuit assembly and fixed to the shell, and the two driving edges of the coil correspond to the two adjacent edge magnets respectively. The magnetic field intensity of the coil side and the conductive damping piece side is increased, it is guaranteed that the stator assembly side has strong electromagnetic driving force, sufficient electromagnetic damping is provided for the conductive damping piece side, the descending time of the motor is effectively shortened, and the user experience feeling is improved.

The invention relates to the technical field of wind power generation control, and discloses a self-adaptive high-power-density permanent magnet motor control method and system, and the method comprises the steps: monitoring a motor current waveform zero crossing point time sequence in real time, and taking the occurrence frequency of a time sequence abnormal event as a recognition basis of a system stress state; when the stress state is identified, d-axis current is instantly injected to form flexible electromagnetic damping, q-axis current output is synchronously limited to reserve safety margin, a current distortion signal is converted from a control error to a system state messenger, response is carried out in a cooperative mode of combining flexible suppression and active protection, and the safety margin is reserved. The problems of overheating and mechanical fatigue accumulation caused by excessive compensation when a traditional control mode deals with disturbance are avoided, the control system obtains the irritability self-protection capacity, and the operation reliability of the wind generating set under the uncertain working condition is improved.

The invention discloses a magnetic pole rotating type electromagnetic damping shimmy damper for a nose landing gear of an aircraft, and belongs to the technical field of vibration control of landing gears of aircrafts. The shimmy damper comprises a first stator disc and a second stator disc which are symmetrically arranged, a rotor disc, a plurality of pairs of permanent magnetic poles, a rotating shaft, a top cover, a base and a bearing. The rotor disc is in interference fit with the rotating shaft through the central square hole, the magnetic poles are circumferentially, uniformly and fixedly arranged on two sides of the rotor disc, and the magnetizing directions of the adjacent magnetic poles are opposite. An adjustable air gap is reserved between the stator disc and the magnetic pole. During working, shimmy motion of the nose landing gear is converted into rotation of the rotating shaft through the transmission mechanism, the rotor disc and the magnetic poles are driven to rotate, the stator disc cuts magnetic induction lines to generate eddy currents, damping torque is formed, kinetic energy is converted into heat energy, and efficient shimmy reduction is achieved. External power supply is not needed, the structure is compact, the weight is light, the problems of abrasion and maintenance of a traditional friction or oil damper are solved, and the damper is particularly suitable for a modern aircraft landing gear system.

The application relates to the technical field of electromagnetic damping, and provides a novel eddy current electromagnetic damper which comprises a cylindrical shell conductor plate (formed by embedding a conductive plate and a magnetic conductive plate), a ring-shaped Halbach permanent magnet array (as a mover), two strip-shaped permanent magnets, a central shaft and an end cover. When the damper is impacted, the mover and the stator move relatively, the conductive plate generates an eddy current, and an eddy current resistance is formed. Meanwhile, repulsion between N poles between the two strip-shaped permanent magnets and the ring-shaped Halbach permanent magnet array generates repulsion force, pushes the ring-shaped Halbach permanent magnet array back to the middle position, and makes the damper reset rapidly. The damper has the advantages of simple structure, low cost and high reliability, and is suitable for large-scale popularization and application.

The invention discloses a high-frequency electromagnetic coupling type damping system and a control method thereof, and relates to the technical field of automobile suspension. A primary coil and a tuning capacitor form a kHz-level LC resonance circuit, a secondary coil or a conductive disc is coupled with the kHz-level LC resonance circuit in a spaced mode, and non-contact suspension supporting is formed between a vehicle body and wheels by means of permanent magnet preloading. The driving frequency is set to be 1-10% above the resonant frequency, the system naturally presents positive stiffness and realizes self-balance, and a sensor closed loop is not needed. Coupling change caused by road excitation induces current on the secondary side, energy can be recycled through the rectifier bridge-DC-DC converter, and electromagnetic damping can also be formed through the adjustable load.

The utility model discloses an electromagnetic damping vibration isolation device belongs to vibration control technical field. The utility model solves the technical problem of the magnetic field intensity fixed of electromagnetic damping vibration isolation device and coil heating easily leads to performance attenuation. The utility model discloses an electromagnetic damping vibration isolation device, including coil subassembly and conductor block. Coil subassembly includes coil and coil clamp. Coil clamp is held in the outer periphery of coil. Coil clamp includes clamp body and water cooling pipeline. The heat dissipation block is equipped on the clamp body, and the heat dissipation block extends along the radial direction of coil, and multiple heat dissipation blocks are evenly arranged around coil. The water cooling pipeline is surrounded in the clamp body. The conductor block is located between at least two groups of coil subassembly, and the magnetic pole of every two groups of coil subassembly is opposite, thereby making the conductor block can be subjected to electromagnetic damping force when producing vibration. The utility model discloses a vibration isolation device can cover the vibration control demand of multiple frequency bands, avoids coil overheat aging, improves the life of vibration isolation device.

The invention discloses a conductor magnetic damping coefficient measuring device and method, and relates to the field of conductor characteristic measurement, in the conductor magnetic damping coefficient measuring device, a single-chip microcomputer auxiliary machine, a control center and a speed measuring device are connected with a single-chip microcomputer main machine; the driving module is respectively connected with the control center and the tension measuring device; the magnetic slide block is located on a horizontally placed target conductor track; the single-chip microcomputer auxiliary machine and the magnetic sliding block are connected with the tension measuring device. The control center controls the driving module to rotate at a constant speed to drive the tension measuring device to move at a constant speed, so that the magnetic sliding block slides on a target conductor track at a constant speed; the tension measuring device and the speed measuring device are used for measuring the tension measuring value and the speed of the magnetic sliding block when the magnetic sliding block slides at a constant speed; the single-chip microcomputer auxiliary machine corrects the tension measurement value; and the single-chip microcomputer host calculates the magnetic damping coefficient of the target conductor track according to the tension correction value, the speed and the friction force during constant-speed sliding. According to the invention, the measurement of the magnetic damping coefficient of the conductor can be simply and accurately realized.