7 results about "Pulsed magnet" patented technology

The invention discloses a convex rail off-line debugging method for multiple impact magnets based on total integral field residual ratio closed-loop optimization, and relates to the technical field of pulse magnet magnetic field measurement and debugging. A total integral field signal is synchronously collected under the same triggering condition, and the ratio of an actually measured total integral field to a reference total integral field is calculated as a residual ratio to quantify the mass of the closed orbit. When the residual ratio exceeds a preset threshold value, the system automatically calculates excitation current and trigger delay correction according to the residual ratio, repeatedly measures after adjusting driving parameters to form closed-loop optimization until the residual ratio meets requirements, and records a current parameter combination as an offline debugging result; according to the invention, direct measurement and evaluation under the combined working state of multiple impact magnets are realized, and the accuracy and efficiency of off-line debugging are improved.

The application discloses a device for measuring the magnetic field distortion of a pulsed magnet, which comprises an arrayed measuring coil assembly and an analog integrator; the arrayed measuring coil assembly comprises multiple layers of PCB circuit boards which are placed in an upper-lower overlapping mode; each layer of the PCB circuit boards is engraved with N groups of coils which cover the field region of the pulsed magnet; the coils of different layers of the PCB circuit boards adopt the same spiral direction and are connected with each other through through holes; the analog integrator comprises a primary signal integrator for processing an induced voltage primary signal and a differential signal integrator for processing a differential signal; a single coil signal is connected to the primary signal integrator; the wires of different groups are reversely connected with each other, and the differential signal is connected to the differential integrator; and a corresponding measuring method is also disclosed.

This invention belongs to the technical field of high-field magnet structure design, specifically involving an adaptive selection method for simulation type in pulse magnet structure design. The method includes: establishing a model of the pulse magnet; using a circuit model to calculate the actual current waveform of the magnet at the required power supply voltage; importing this waveform into an electromagnetic finite element model to calculate the peak electromagnetic load of the magnet; applying this load as a single step load to the structural finite element model; extracting the stress-time curve of each target component; and extracting the fundamental component of this curve using Fourier transform to determine the natural vibration frequency of the component. ω m Perform a Fourier transform on the actual current waveform to determine its fundamental component. ω i If all target components ω m All are greater than N × ω i If a steady-state simulation evaluation is selected, then this invention can solve the problem of the lack of a standardized operating system in the existing pulse magnet structure design that can reasonably use static analysis results to approximate transient analysis results.

The invention provides a manufacturing method of an iron core of a pulse magnet, and relates to the technical field of magnet manufacturing. The method comprises the steps that according to the set cross section shape of an iron core of the pulse magnet, a first bonding end plate and a second bonding end plate are machined and formed through linear cutting or laser cutting; after processing and forming, integrally laminating and curing the first bonding end plate and the second bonding end plate to form an iron core laminated block; iron core end plates are welded to the two outer sides, oppositely arranged in the same direction, of the iron core stacked block, a welding plate is welded between the two iron core end plates, and an upper iron core assembly and a lower iron core assembly are formed respectively; assembling the upper iron core assembly and the lower iron core assembly into an iron core assembly; a pole head is machined on the iron core assembly through linear cutting; the iron core assembly is divided into an upper iron core assembly and a lower iron core assembly, comb-shaped grooves in the upper iron core assembly and the lower iron core assembly are filled with epoxy plates, the iron core assembly compacted with the epoxy plates is subjected to epoxy bonding, and the iron core structure of the pulse magnet is manufactured.

The invention discloses a modularized pulse magnet liquid cooling power supply device, which solves the problems of large structural size, low integration level, poor vibration resistance effect and the like of the existing power supply device. The device comprises a frame, a vertical plate unit, a top cover, an input power distribution unit, an output power distribution unit, a liquid cooling power unit, a liquid cooling self-sealing plug, an energy storage capacitor unit, a capacitor bus lamination unit, a chopping control circuit unit and an output lamination bus unit. The vertical plate unit is mounted in the frame; the top cover is mounted at the top of the frame; the input power distribution unit and the output power distribution unit are installed on the two sides of the frame respectively. The liquid cooling power unit is installed on the vertical plate unit, and the liquid cooling self-sealing socket is in butt joint with the liquid cooling self-sealing plug. The output laminated bus unit is positioned below the liquid cooling power unit and is electrically connected with the liquid cooling power unit; the capacitor bus lamination unit is positioned above the liquid cooling power unit and is electrically connected with the liquid cooling power unit; the energy storage capacitor unit is electrically connected with the capacitor bus lamination unit; and the chopping control circuit unit is electrically connected with the liquid cooling power unit.

The invention provides a rotational speed detection device, a rotational speed detection system, a rotational speed calculation device and a rotational speed detection method, which can reduce reference information when calculating the rotational speed of a rotating body. Provided is a rotational speed detection device provided with: a magnetic wire to which an alternating magnetic field that changes two or more cycles per one rotation is applied in the axial direction in accordance with a rotational operation of a rotating body, and which outputs a pulse having a polarity corresponding to a change in the direction of the magnetic field; a magnet polarity determination unit that determines the polarity of a magnet that forms the alternating magnetic field and is included in the rotating body at a predetermined relative position with respect to the magnetic line; and a calculation unit that counts sections in the circumferential direction of the rotating body and calculates a count value, the calculation unit calculating the count value based on the polarity of the magnet of the rotating body acquired last time, the polarity of the pulse of this time, and the polarity of the magnet of the rotating body when the pulse of this time is generated, without using the polarity of the pulse of last time. And calculating the count value.

The application discloses a kind of to the device and calibration method of calibrating pulsed magnetic field standard device, the device includes: laser emitter, polarizer, optical path mirror, first optical rotatory crystal, second optical rotatory crystal, 1 ° mirror, beamsplitter and differential detector.Laser beam emitted by laser emitter passes through polarizer, is converted into linearly polarized light, linearly polarized light is obtained after the polarization of pure light by optical path mirror;The length ratio of first optical rotatory crystal located in the center of constant magnetic field coil and second optical rotatory crystal located in the middle of pulsed magnet is k;After the polarization of pure light, linearly polarized light passes through the first optical rotatory crystal and the second optical rotatory crystal in turn, and obtains mixed polarized light;Mixed polarized light is reflected by 1 ° mirror, enters the beamsplitter, and the beamsplitter divides mixed polarized light into two single polarized lights;The two single polarized lights are respectively incident to the differential detector, and the two single polarized lights are compared by the differential detector.