54 results about "Electropermanent magnet" patented technology

A ballast dispenser system and method for flight vehicles, such as high altitude lighter than air vehicles. The system passively retains ballast without power and deploys ballast in response to applying power. An electro-permanent magnet passively retains ballast within the dispenser. Application of power to a coil produces an opposing magnetic field that reduces the overall strength of a net magnetic field acting on the ballast. Lateral positional control of the electro-permanent magnet provides calibration and control of the retaining magnetic field strength. A collapsible silo may hold ballast prior to dispensing ballast and collapse upon landing for minimizing damage.

Provided is a magnet for use with an SSSV, an SSSV, a well system, and a method. The magnet, in one aspect, includes an electropermanent magnet. The magnet, in accordance with this aspect, further includes a self-powered protection circuit coupled to the electropermanent magnet, the self-powered protection circuit configured to switch the electropermanent magnet to the OFF state when the SSSV loses power.

The present invention is characterized by comprising: an electropermanent magnet unit which drives a magnetic object with five degrees of freedom (5 DOF) by generating an electromagnetic field, and recognizes the position of the magnetic object with 5 DOF; a robotic arm which supports the electropermanent magnet unit and fixes or moves same; a hand grip-type controller coupled to the electropermanent magnet unit or the robotic arm and having a button for controlling the robotic arm so as to move the electropermanent magnet unit to a desired position; and a body to which the robotic arm is fixed.

The utility model relates to the technical field of feeding devices, in particular to a sawn steel semi-automatic feeding device for hot-rolled steel pipe production, which improves the reliability and the operation convenience of picking up steel pipes, improves the feeding efficiency, improves the use safety and improves the convenience of picking up and feeding steel pipes with different lengths. Comprising a guide sleeve and two sets of supporting arms, and the two sets of supporting arms are slidably installed on the left and right parts of the guide sleeve correspondingly; the device further comprises a driving device, a buffering device, a supporting device, two sets of electric permanent magnets, two sets of first air cylinders and two sets of first push blocks, the driving device is arranged in the guide sleeve and used for driving the two sets of supporting arms to slide oppositely, and the two sets of electric permanent magnets are installed at the bottom ends of the two sets of supporting arms through the buffering device. The buffering device is used for buffering the two sets of electro-permanent magnets, the two sets of first air cylinders are installed on the outer side walls of the two sets of electro-permanent magnets correspondingly, the two sets of first push blocks are installed at the moving ends of the two sets of first air cylinders correspondingly, and the guide sleeve is installed on the supporting device.

A system in a vehicle includes a panel configured cover a portion of the vehicle through which a port extends and one or more electro permanent magnets arranged on the portion of the vehicle. The system also includes a controller to magnetize the one or more electro permanent magnets based on applying a current of a first polarity to the one or more electro permanent magnets such that the one or more electro permanent magnets on the portion of the vehicle couple to the panel, the panel being metal, or to one or more permanent magnets on a surface of the panel to lock the panel when the panel is in the closed position.

A fluid transfer interface is provided. The fluid transfer interface includes one or more of first and second interface portions. The first interface portion includes a first portion of a fluid connector and one or more ferromagnetic surfaces. The second interface portion includes an extendable second portion of the fluid connector and one or more electropermanent magnets, laterally disposed around the second portion of the fluid connector, configured to be magnetized or demagnetized in unison. The one or more electropermanent magnets are further configured to provide attraction force to the one or more ferromagnetic surfaces when magnetized and couple the first interface portion to the second interface portion and provide no attraction force to the one or more ferromagnetic surfaces when demagnetized and allow the first interface portion to be decoupled from the second interface portion.

An input device comprising a processor(s), an input element, an electropermanent magnet (EPM) assembly including: a permanent magnet operable to generate a magnetic field; and a magnetizing assembly configured to set a magnetic field generated by the permanent magnet, a first ferromagnetic element, and a second ferromagnetic element. The first ferromagnetic element is configured to part and move away from the second ferromagnetic element as the input element is depressed. When the EPM assembly magnetizes the permanent magnet to a first polarity, the first and second ferromagnetic elements are magnetically attracted to each other and provide an attracting that magnetically opposes the first and second ferromagnetic elements from parting, and when the EPM assembly magnetizes the permanent magnet to a second polarity, the first and second ferromagnetic elements are not magnetically attracted to each other and do not magnetically oppose the first and second ferromagnetic elements from parting.

The present invention relates to the field of auxiliary installation tooling for wind tower control platforms, and specifically to a tooling for controlling the positioning size of an external platform. The tooling comprises a steel pipe lifting electropermanent magnet adsorbed on the upper end of a tower, a long plate fixed to the upper end of the steel pipe lifting electropermanent magnet along its length, three slide grooves opened on the upper end of the long plate along its length, a rectangular frame provided above the steel pipe lifting electropermanent magnet, a mounting plate detachably fixed on the fixed plate, slide bars slidingly provided in the slide grooves on the left and right sides, the slide bars fixedly connected to the frame, a slide plate slidingly provided in the middle slide groove, an adjusting bolt threadedly connected to the middle of the front and rear ends of the frame, and the lower end of the adjusting bolt rotatably connected to the slide bar. The present invention has a simple structure, is easy to operate, can improve installation accuracy, and improves work efficiency. The tooling does not need to be welded and fixed, is easy to load and unload, and is easy to operate. It solves the problem of positioning the external platform, and the tooling can be reused.

Clutch assemblies and associated methods are disclosed herein. In an example, a clutch assembly comprise a first terminal, a second terminal, a clutch body enclosing a torque transfer fluid, and one or more electropermanent magnets (EPMs), each configured to generate a respective EPM magnetic field. The clutch assembly is configured to transmit a torque between the first terminal and the second terminal with a torque capacity that is at least partially based on the EPM magnetic fields. In an example, a method of operating a clutch assembly comprises transitioning each of one or more EPMs to a fully depolarized state, a fully polarized state, or an intermediate polarization state. In an example, a method of operating a clutch assembly comprises controlling each of one or more EPMs of the clutch assembly to vary a total EPM magnetic flux generated by the one or more EPMs.

A ballast dispenser system and method for flight vehicles, such as high altitude lighter than air vehicles. The system passively retains ballast without power and deploys ballast in response to applying power. An electro-permanent magnet passively retains ballast within the dispenser. Application of power to a coil produces an opposing magnetic field that reduces the overall strength of a net magnetic field acting on the ballast. Lateral positional control of the electro-permanent magnet provides calibration and control of the retaining magnetic field strength. A collapsible silo may hold ballast prior to dispensing ballast and collapse upon landing for minimizing damage.

An electropermanent magnet array is provided. The electropermanent magnet array includes one or more of a plurality of electropermanent magnets of common length, arranged in a parallel fashion, and a planar pole piece, coupled to the first ends of the plurality of electropermanent magnets. Each electropermanent magnet includes a first and a second end opposite the first end.

An electropermanent magnetic system (10) comprising an electropermanent magnet module (12) and an electronic control panel (11) configured to supply an electric current to the electropermanent magnet module (12) in order to magnetize or demagnetize it, as well as an electrical connection (13) between the control panel (11) and the electropermanent magnet module (12), wherein the electropermanent magnet module (12) comprises a permanently connected magnetization indicator (14), characterized in that the magnetization indicator (14) comprises an e-paper screen (EP) configured to display, in a first zone (Z1), at least one item of information relating to the magnetization state of the electropermanent magnet module (12), even when the e-paper screen (EP) is not activated.

A coupling device may include a first housing comprising. The coupling device may include a ferromagnetic material, a first electrical connector, and a second housing couplable to the first housing. The second housing may include a second electrical connector couplable to the first electrical connector. The coupling device may include an electro-permanent magnet electrically coupled to the second electrical connector and magnetically couplable to the ferromagnetic material; wherein the electro-permanent magnet is configured to switch between an ON state and an OFF state in response to a disconnection signal.

A coupling device may include a first housing comprising. The coupling device may include a ferromagnetic material, a first electrical connector, and a second housing couplable to the first housing. The second housing may include a second electrical connector couplable to the first electrical connector. The coupling device may include an electro-permanent magnet electrically coupled to the second electrical connector and magnetically couplable to the ferromagnetic material; wherein the electro-permanent magnet is configured to switch between an ON state and an OFF state in response to a disconnection signal.

The application discloses a falling recloser, which comprises a recloser, an inclined insulator and a tripping assembly. The tripping assembly drives a lever to separate from a rotating block through a bimetallic strip or a split coil, so that the insulator falls. A controller integrates a current transformer to take power, and a permanent magnet drives a vacuum tube to open and close. A mode switching assembly controls a micro switch through an outer rocker arm linkage inner rocker arm to switch an automatic reclosing (AUTO) mode or a direct falling (DIR) mode. The application has the functions of double-tripping redundancy, mode switching and high-stability power taking.

The invention belongs to the technical field of pressure vessel steel plate hoisting, and particularly relates to an electric permanent magnet hoisting tool for preventing hoisting damage of a hot rolling open flat plate and a using method. The electro-permanent magnet lifting appliance comprises a main beam and at least one electro-permanent magnet lifted on the main beam through an iron chain, the electro-permanent magnet is of a cuboid structure, the side faces of two long edges are each provided with a lifting assembly, the side faces of two short edges are each provided with a driving mechanism, and the driving mechanisms are connected with a transverse rod; two ends of the cross rod are respectively connected with a set of motion branch chain which is connected with the lifting assembly; the lifting assembly comprises a lifting beam, a copper plate and a lifting guide rod, the copper plate is fixed on the lower side of the lifting beam, the lifting guide rod is arranged on the upper side of the lifting beam, and the lifting guide rod and the electric permanent magnet form a lifting kinematic pair; and the driving mechanism is linked with the motion branch chain to realize up-down position switching of the lifting assembly. The low-hardness copper plate firstly makes contact with the steel plate to avoid scratching, no magnetic circuit gap exists, the magnetic force is guaranteed, stable operation is achieved through the force increasing and buffering structure, the structure is simple, and the cost is low.

The utility model discloses a magnetic type pickup mechanism, which relates to the technical field of roadway construction equipment and comprises magnetic components distributed in a rectangular array, a connecting rod and a supporting seat. The magnetic attraction assembly is provided with a mounting plate and electric permanent magnets, at least one mounting groove is formed in one end face of the mounting plate, and one electric permanent magnet is arranged in each mounting groove; a connecting rod is arranged between every two adjacent magnetic attraction assemblies in the same column, and the two ends, in the length direction, of each connecting rod are connected with the ends, close to each other, of the two mounting plates correspondingly. The supporting base is arranged at the movable end of the external mechanical arm and connected with one of the magnetic attraction assemblies. When the anchor net laying device is used for laying an anchor net, the adsorption face of each magnetic adsorption assembly is of a plane structure, and when the multiple magnetic adsorption assemblies act together and adsorb the anchor net, more supporting areas can be provided in the anchor net picking and laying process, so that the anchor net can be completely attached to the wall.

Aspects of the invention include a computer peripheral device comprising an input element that operates based on a performance characteristic, an electropermanent magnet (EPM) assembly including a permanent magnet configured to generate a magnetic field and a magnetizing assembly configured to set an intensity of the magnetic field generated by the permanent magnet, and a magnetorheological (MR) material coupled to the input element. The MR material has a viscosity that changes based on the magnetic field and affects the performance characteristic of the input element.

A fluid transfer interface is provided. The fluid transfer interface includes one or more of first and second interface portions. The first interface portion includes a first portion of a fluid connector and one or more ferromagnetic surfaces. The second interface portion includes an extendable second portion of the fluid connector and one or more electropermanent magnets, laterally disposed around the second portion of the fluid connector, configured to be magnetized or demagnetized in unison. The one or more electropermanent magnets are further configured to provide attraction force to the one or more ferromagnetic surfaces when magnetized and couple the first interface portion to the second interface portion and provide no attraction force to the one or more ferromagnetic surfaces when demagnetized and allow the first interface portion to be decoupled from the second interface portion.

The present invention discloses a pulse magnetic force quantitative control circuit based on an electro-permanent magnet, which includes a main control unit, a gain unit, and a detection unit. The gain unit is connected to the main control unit and the detection unit. The main control unit is used to generate a pulse signal and adjust the pulse width of the signal based on the signal feedback of the detection unit. The detection unit is used to detect the magnetic flux of the electro-permanent magnet and make corresponding feedback based on the detection result. The gain unit is used to amplify the pulse current signal. The present invention can detect and adjust the degree of full flipping of magnetic domains in the electro-permanent magnet, and can form a multi-level pulse sequence based on the current magnetic flux of the electro-permanent magnet and the set quantitative standard when the degree of magnetic domain flipping is full flipping, and gradually increase the pulse current in this sequence until the quantitative magnetization is completed, realizing precise quantitative control and reducing energy loss.

Various arrangements for undocking an electronic device, such as a tablet computer, from a dock are presented. An intent to undock the device from a dock can be detected. In response to determining the intent to undock, a polarity of a first group of electropermanent magnets can be changed such that an attractive force between the device and the dock weakens. After a time, the polarity of a second group of electropermanent magnets can be changed to further weaken the attractive force.

1. Name of the design product: Chamfering Machine (Intelligent Electropermanent Magnet C-Type Three-Axis). 2. Use of the design product: For chamfering materials. 3. Design key points of the design product: Lies in the shape. 4. Picture or photo that best shows the design key points: Perspective view. 5. Since the perspective view shows the structure of the top view, the top view is omitted; the bottom surface of this design product is a part that is not easily seen or not seen during use, so the bottom view is omitted.

This invention discloses a quasi-zero stiffness vibration isolator, relating to the field of vibration isolation technology. A positive stiffness mechanism is disposed between a platform and a base, supporting the platform under external load and applying a restoring force opposite to and positively correlated with the platform's displacement direction when the platform displaces. A negative stiffness mechanism includes a mover and several electro-permanent magnet units, fixedly mounted on the base. One end of the mover is fixedly connected to the platform. The positive stiffness mechanism, the mover, and all the electro-permanent magnet units are symmetrically arranged about a symmetrical centerline, which is collinear with the direction of the external load force. The other end of the mover has a gap with each electro-permanent magnet unit in a direction perpendicular to the symmetrical centerline. The electro-permanent magnet units generate a magnetic field and apply a magnetic force to the mover in the same direction as the mover's displacement. Through the parallel connection of the positive and negative stiffness mechanisms, the vibration isolator achieves quasi-zero stiffness characteristics near its equilibrium position, thereby achieving low-frequency vibration isolation. This device can improve the reliability of the vibration isolator and extend its service life.

The disclosure herein relates to a panel including an electro-permanent magnet integrated in the panel, and an induction coil connected to the electro-permanent magnet to conduct current induced in the induction coil to the electro-permanent magnet such that the electro-permanent magnet can be switched between a magnetic state and a non-magnetic state. The disclosure herein further relates to a fastening construction, to an aircraft and to an opening device.

The present invention relates to an electro-permanent magnet hoist, comprising a frame main beam, a plurality of frame cross beams arranged below the frame main beam in an array along the long side direction of the frame main beam, and a cluster matrix array of electro-permanent magnets arranged below the frame cross beam; a plurality of flexible chains are arranged between the frame main beam and the frame cross beam, and the bending directions between adjacent flexible chains form a spatial angle; the frame main beam and the flexible chains are connected by a first buffer device, and the frame main beam and the frame cross beam are connected by the first buffer device and the flexible chain; the frame cross beam and the electro-permanent magnet are connected by a second buffer device, wherein the swing directions between the adjacent roller chains are not parallel to each other. The present invention has the advantages of stable adsorption, non-collision between electro-permanent magnets, full coverage of the magnetic field on the working surface of the hoist to prevent leakage, and easy assembly and transportation. It is particularly suitable for whole-plate unloading and single-sheet partitioned unloading on an automated unloading line.

The proposed device (RH) is intended for providing an electrically adjustable, contactlessly operating magnetic cogging torque inhibition between an electro-permanent magnet (MAG) and a cogging torque ring (RR) which is rotatable about an axis of rotation (D) and has rotor pole shoes (PR) arranged in a distributed manner. The electro-permanent magnet comprises a magnetic core (MK), a coil (SP) surrounding said magnetic core, and a magnetic field conductor (Bo, Bu) connected to each pole end (PE) of the magnetic core. In order to provide the cogging torque inhibition, a suitable current pulse can be impressed into the coil. Both magnetic field conductors extend from the pole ends to the rotor pole shoes and form stator pole shoes at their respective ends, which stator pole shoes lie opposite the cogging torque ring having the rotor pole shoes. The two magnetic field conductors are connected to one another in a rotationally fixed manner. According to the invention, the magnetic field conductors each form a plurality of finger-shaped portions (Fo, Fu) each having a finger end piece (Eo, Eu). The finger end pieces are designed and oriented in a radial outer region (RA) of the electro-permanent magnet in such a way that the finger end pieces of one of the two magnetic field conductors engage between the finger end pieces of the other magnetic field conductor in order to form stator pole shoes having north and south poles which alternate in the circumferential direction.

A peripheral device may include a body. The device may include a scroll wheel rotatably coupled with the body. The scroll wheel may include a ferromagnetic rotor. The rotor may be generally annular and may define an open interior. The rotor may define a first plurality of teeth arranged about a periphery of the open interior. The device may include a stator disposed within the open interior. The stator may define a second plurality of teeth that are alignable with the first plurality of teeth. The stator may include a plurality of electro-permanent magnets. Each of the electro-permanent magnets may be disposed within a conductive coil. The device may include a position sensor that is configured to detect an angular position of the rotor. The device may include control circuitry that controls delivery of current to the electro-permanent magnets of the stator to controls a speed of the scroll wheel.

The motor energy-saving method comprises the following steps: annularly arranging a plurality of electric permanent magnets on the inner wall of a motor shell cavity, arranging electrified coils outside the electric permanent magnets, electrifying the electrified coils, providing magnetic fields for a rotor and a stator winding by the magnetic force of the electric permanent magnets, respectively rotating the rotor and increasing the magnetic field of the stator winding. A plurality of supporting platforms are arranged on the inner wall of the motor shell along the circumference, electric permanent magnets are arranged on the supporting platforms, and electrified coils are wound on the electric permanent magnets. The beneficial effects of the invention are that when the power required by the motor rotor is not strong, the required magnetic field can be provided for the rotor only by the magnetic force of the electric permanent magnet, and when the magnetic field of the electric permanent magnet is insufficient, the electromagnetic coil can be electrified to enhance the magnetic field provided by the stator winding. According to the scheme, the excitation loss risk of the electric permanent magnet under the interference of other magnetic fields is overcome, the magnetic field intensity can be adjusted through the magnitude of the input current, and compared with the prior art, the high adjusting capacity and the energy-saving effect are achieved.

A computing device can include a processor; memory accessible to the processor; a lithium-ion battery; a power interface; magnet control circuitry operatively coupled to at least the power interface for receipt of electrical power; and a housing for the processor, the memory, the battery, the power interface and the magnet control circuitry, where the housing includes a first shell, a second shell, and an electropermanent magnet assembly that generates a magnetic force that couples the first shell to the second shell, where the electropermanent magnetic assembly is controllable via the magnet control circuitry to decrease the magnetic force to decouple the first shell from the second shell.

The invention relates to the technical field of ship paint surface detection, and discloses a ship paint surface damage detection device which comprises a machine body, the bottom of the machine body is fixedly connected with a support, the bottom of the support is provided with a detection probe, the detection probe is connected with the machine body through a transmission line, and the two sides of the detection probe are symmetrically connected with movable blocks. The movable block is made of a material capable of being magnetically attracted, a fixed block installed on the support is arranged above the movable block, the fixed block is an electric permanent magnet, a connecting spring is arranged on one side of the fixed block, and the spring is connected with the bottom plate and the support. The magnetic thickness gauge is fixed below the camera of the ship decontamination robot, the effect of ship paint surface damage detection can be achieved while image acquisition is not affected, meanwhile, measured data can be wirelessly transmitted to a computer through the magnetic thickness gauge with a built-in Bluetooth interface, manual recording is facilitated, and the detection efficiency is improved. And accurate data can be provided for operations such as later paint make-up.