28results about How to "Reduce hysteresis" patented technology

The invention discloses a perovskite solar cell based on 1, 2PDADI (1, 2-propane diamine hydriodic acid) interface modification and a preparation method thereof, and belongs to the technical field of perovskite solar photovoltaics. The device structure of the cell sequentially comprises ITO conductive glass, a SnO2 electron transport layer, a 1, 2PDADI modification layer, a perovskite light absorption layer, a hole transport layer and an Ag counter electrode from bottom to top, the preparation method specifically comprises the following steps: (1) cleaning and blow-drying the ITO conductive glass; (2) spin-coating SnO2 nano dispersion liquid, and carrying out annealing treatment; (3) spin coating of a 1, 2PDADI / IPA solution is carried out, and annealing treatment is carried out; (4) spin-coating a perovskite precursor solution, and performing annealing treatment; (5) spin coating of a Spiro-OMeTAD precursor solution is carried out, and oxidation treatment is carried out; and (6) carrying out vacuum evaporation on an Ag counter electrode to obtain the 1, 2PDADI interface modified perovskite solar cell. The preparation process is simple and convenient, the cost is low, the prepared perovskite solar cell is small in hysteresis effect and high in photoelectric conversion efficiency, and a feasible thought and method are provided for commercialization of the perovskite solar cell.

The invention relates to plasticity-enhanced lead lanthanum zirconium tin titanate-based antiferroelectric ceramic and a preparation method thereof. The chemical formula of the zirconium tin lead titanate lanthanum-based anti-ferroelectric ceramic is (Pb < 0.975-x > La < 0.02 > Sr < x >) (Zr < 0.5 > Sn < 0.37 > Ti < 0.13 >) < 0.9975 > O < 3 >, x is smaller than or equal to 0.10; and sintering by adopting a flash sintering technology to prepare the plasticity-enhanced lead lanthanum zirconate tin titanate-based antiferroelectric ceramic. Wherein the initial electric field intensity is set to be 100-300 V / cm, and the temperature rise rate of the flash sintering furnace body is 5-15 DEG C / min; when the reading of the current detector reaches the order of magnitude of [mu] A, the electric field intensity is increased to 200-500V / cm; after the current density value reaches 10-30 mA / mm < 2 >, the stable current density is kept for 90-200 s; preferably, the temperature rise rate of the flash burning furnace body is 8-12 DEG C / min.

The invention discloses a high-sensitivity underwater flexible touch sensor and a pressure detection method. The sensor comprises a top porous boss layer, an upper interlocking layer, a middle layer and a lower interlocking layer which are sequentially and coaxially arranged from top to bottom. A closed cavity is formed between the upper interlocking layer and the lower interlocking layer, the cavity is filled with insulating hydraulic oil, the upper interlocking layer is provided with an upper-layer interlocking microstructure, the lower interlocking layer is provided with a lower-layer interlocking microstructure, and the upper-layer interlocking microstructure, the lower-layer interlocking microstructure and the middle layer are all located in the cavity; the middle layer comprises a middle layer flexible substrate, and a sensitive material and a flexible electrode which are arranged above the middle layer flexible substrate, and the sensitive material adopts a patterning design and is electrically connected with the flexible electrode; according to the method, the water pressure is compensated in the aspects of structure and data processing, and high-precision pressure values can be output under different water pressures. According to the underwater flexible touch sensor, high-sensitivity and low-interference detection of the contact force can be realized when the underwater flexible touch sensor works in different depth environments.

The invention provides a flexible capacitive three-dimensional force sensor and a preparation method thereof. The sensor sequentially comprises a flexible substrate, a bottom pole plate, a composite dielectric layer, a top pole plate and a packaging layer from bottom to top, wherein at least three bottom pole plates are arranged and are arranged in a triangular shape; when the packaging layer is subjected to external force, the force is sequentially transmitted to the top electrode plate and the composite dielectric layer through the packaging layer, the composite dielectric layer deforms under the force, the capacitance value between the bottom electrode plate and the top electrode plate is changed, and the capacitance value between the bottom electrode plate and the top electrode plate is measured according to the change of the capacitance value between different bottom electrode plates and top electrode plates before and after the force is applied. And analyzing to obtain the direction and the magnitude of the external force. According to the flexible capacitance type three-dimensional force sensor, the three-common-plate capacitor structure is adopted, when the force is applied, the numerical value of the tangential force can be measured through the relative displacement and the opposite area of the upper and lower electrode plates of the three capacitors, the direction of the force is determined through the increase and decrease change of the capacitors, and therefore three-dimensional force detection is achieved.

The invention provides a process debugging method for preparing a thin film by utilizing reactive magnetron sputtering, which comprises the following steps of: 1, determining the target working power of the reactive magnetron sputtering and the target flow of working gas according to the arc discharge condition of the surface of a target material; 2, based on the target working power and the target flow of the working gas, the surface roughness of the thin film prepared through reaction magnetron sputtering is measured under different powers of the auxiliary source, and the auxiliary source power corresponding to the surface roughness smaller than 0.2 nm is determined as the target auxiliary source power; 3, based on the target working power, the target flow of the working gas and the target auxiliary source power, the absorption loss of the film on the surface of the substrate is tested through a weak absorption analysis method by using the reaction gas with different flows, and the absorption loss is used for representing the reaction degree of preparing the film through reaction magnetron sputtering. A reaction gas flow rate corresponding to an absorption loss satisfying 10 ppm or less is determined as a target reaction gas flow rate.

The invention discloses customizable chitosan microfiber-based water sponge gel as well as a preparation method and application thereof, and the preparation method comprises the following steps: shearing an acid solution of chitosan, and adjusting the pH value of a system to be alkaline, so as to obtain a chitosan microfiber solution; and adding an epoxy cross-linking agent, and carrying out freeze thawing treatment on the precipitate obtained by centrifugal treatment for multiple times by using the covalent bond and hydrogen bond cross-linked chitosan microfiber to prepare the water sponge gel. The customizable chitosan microfiber-based water sponge gel prepared by the method disclosed by the invention has abundant macroporous structures, so that the transmission efficiency of nutrient substances and wastes can be effectively improved, and two-dimensional and three-dimensional customizable structures with different shapes can be obtained by extruding chitosan microfiber suspension liquid through an injector; the prepared scaffold has excellent elasticity, fatigue resistance, low hysteretic property, biocompatibility and degradability, meets the requirements of large-scale preparation of various scaffolds with complex structures, and is expected to be used as a customizable implantable scaffold for repairing and reconstructing large-volume soft tissue defects.

The invention discloses a gene detection sample oscillation mixing device capable of accurately controlling the speed, and relates to the technical field of gene sample detection, the gene detection sample oscillation mixing device comprises a device host and a driving member, and is characterized in that the driving member is vertically embedded in the device host, and the top power output end of the driving member is horizontally connected with a rotating frame member. According to the gene detection sample oscillation mixing device capable of accurately controlling the speed, the oscillation frequency and amplitude can be accurately controlled according to preset parameters through a high-precision speed sensor and an intelligent regulation and control system which are arranged in the device host. And the driving component adopts an advanced motor driving technology, so that the stability and high efficiency of power output are ensured. And the rotating frame component is designed into an adjustable structure and can be flexibly adjusted according to the sizes of different sample containers, so that the uniformity of oscillation mixing is ensured. And the clamping component is made of a soft and elastic material, so that the sample container can be firmly clamped, and the damage to the sample in the oscillation process can be avoided.

The invention relates to a method for coating a fluorine-containing base film on the surface of a cutter. The method comprises the following steps of: a, oil removal, degreasing and rust removal of the surface of the cutter; b, drying and dehydrating the surface of the cutter; c, coating the base membrane liquid; d, a micro-permeation process of the base membrane liquid; and e, curing the base film liquid.

The invention discloses a hydroelectric generating set speed regulator load control method and system, and the control method comprises the steps: obtaining unit power # imgabs0 # and guide vane opening degree Y data of a hydroelectric generating set under different water heads, and inputting the data into a monitoring system database; the monitoring system database searches a target guide vane opening degree Y1 corresponding to the target load # imgabs2 # under the current water head according to the target load # imgabs1 #, and a speed regulator controller adjusts the guide vane opening degree Y to the target guide vane opening degree Y1 according to the given opening degree; after the guide vane opening degree Y is adjusted to the target guide vane opening degree Y1, the speed regulator controller controls the unit power # imgabs3 # to be adjusted to the target load # imgabs4 #; after the unit power # imgabs5 # is adjusted to the target load # imgabs6 #, a speed regulator controller is converted into an opening degree adjusting mode from a power mode; the speed regulator controller can quickly determine the target guide vane opening degree Y1 through the monitoring system database, the speed regulator controller can predict and adjust the guide vane opening degree Y in advance through the water head and the monitoring system database, and the speed regulator lag phenomenon caused by load change and water head fluctuation is effectively reduced.

The invention discloses a self-powered flexible humidity sensor based on a hydrogen bond organic framework and a preparation method and application thereof, the self-powered flexible humidity sensor comprises a symmetrical electrode, an HOF / CNF electrolyte membrane located on one side of the symmetrical electrode and an HOF / CNF / NaCl electrolyte membrane located on the other side of the symmetrical electrode, and the HOF / CNF electrolyte membrane is in contact with the HOF / CNF / NaCl electrolyte membrane; the symmetric electrode is a Ti < 3 > C < 2 > T < x >-MXene electrode, and the HOF is a hydrogen bond organic framework material synthesized by taking 1, 2, 4, 5-tetra (4-carboxyl phenyl) benzene as a precursor. According to the self-powered flexible humidity sensor, conversion from permeation energy to electric energy is achieved by regulating and controlling the salt ion concentration, and the self-powered flexible humidity sensor shows good flexibility and low hysteresis characteristics and has high sensitivity of 0.17 microamperes / % RH, rapid response time of 1.06 s and stability of more than 200 cycles.

The invention discloses a preparation method and application of a zinc-dipped aluminum foil negative electrode applied to a lithium ion battery, and belongs to the field of lithium ion batteries. The zinc-dipped aluminum foil is prepared aiming at the defects and deficiencies of the aluminum foil serving as a lithium ion battery negative electrode material; the zinc-dipped aluminum foil negative electrode prepared by the method is flat and bright, has good corrosion resistance and high conductivity, and has the advantages of low impedance, high charge-discharge rate, high first-circle coulombic efficiency, small hysteresis phenomenon and the like when being assembled with a lithium foil to form a half battery. The method comprises the following steps: 1, pretreating aluminum foil; 2, preparing a zinc dipping solution; and 3, zinc immersion treatment. The zinc-dipped aluminum foil negative electrode applied to the lithium ion battery is used as a negative electrode of the lithium ion battery. Compared with a half cell assembled by a traditional aluminum foil electrode, the zinc-dipped aluminum foil electrode has higher charge-discharge rate and lower impedance, and also has higher first-circle coulombic efficiency and more stable cycle performance.

The invention discloses an electrode for measuring ocean pCO2 as well as a preparation method and application of the electrode. The electrode comprises an acrylic plate, an iridium oxide electrode and an Ag / AgCl reference electrode, the acrylic plate is provided with two grooves which are communicated up and down, the iridium oxide electrode and the Ag / AgCl reference electrode are transversely arranged in the upper groove and the lower groove respectively, the grooves are filled with bicarbonate buffer solutions, and the surface of the upper groove is covered with a PTFE breathable film in an adhesive mode; the iridium oxide electrode is prepared by adopting a carbonate melting oxidation technology, so that the iridium oxide electrode has excellent response capability, and shows extremely small drift and longer service life in long-term use. The electrode for measuring ocean pCO2 has the advantages of being simple in structure, small in potential drift, high in response speed, long in service life and the like, is suitable for measuring the pCO2 value of seawater, and has important significance and application value in the field of ocean environment monitoring.

This invention belongs to the field of medical temporal signal processing technology, specifically a method for predicting respiratory-related displacement based on attention-embedded dilated convolution. The method involves acquiring respiratory-related temporal data of the target object over continuous time; inputting this data into a trained respiratory-related displacement temporal prediction network model, which outputs the predicted respiratory displacement. The network model comprises multiple cascaded dilated convolutional residual blocks and a prediction layer. Each dilated convolutional residual block includes a causal dilated convolutional unit, a self-attention mechanism unit, and a residual connection unit. The output of the last dilated convolutional residual block is input into the prediction layer, which outputs the respiratory-related displacement of the target object at future time points. This invention dynamically weights key time steps during each layer's temporal feature extraction process, thereby improving the predictive ability for respiratory-related displacement and tumor motion.

The invention discloses an anti-ferroelectric film and a preparation method thereof, and an anti-ferroelectric capacitor comprising the same and a preparation method thereof, the anti-ferroelectric film comprises a plurality of paraelectric-anti-ferroelectric layers, each paraelectric-anti-ferroelectric layer comprises a plurality of paraelectric areas, the paraelectric areas are dispersed and distributed in the anti-ferroelectric area, and the paraelectric areas are distributed in the anti-ferroelectric area. The preparation method comprises the following steps: mixing a PbZrO3 precursor solution and an ABO3 precursor solution to obtain a mixed precursor solution; depositing the mixed precursor solution on a substrate material, performing spin-coating deposition, baking and pyrolysis to obtain a film with at least two paraelectric-antiferroelectric layers, and performing annealing crystallization treatment to obtain an antiferroelectric film; the anti-ferroelectric capacitor is prepared based on an anti-ferroelectric film, the anti-ferroelectric capacitor further comprises a single crystal substrate, a conductive electrode layer and a gold electrode, and the anti-ferroelectric film is located between the conductive electrode layer and the gold electrode. The anti-ferroelectric film has a structure for blocking and filing an anti-ferroelectric sequence, and can improve the stability of an anti-ferroelectric phase, postpone an anti-ferroelectric-ferroelectric transition field and reduce the hysteresis of a ferroelectric hysteresis loop.

The invention relates to a high-precision resonance ball type pressure and temperature integrated sensor, which is characterized in that a resonance ball and a resonance ball fixed support structure are integrally processed, the outer wall of the resonance ball is provided with a resonance ball surface electrode, and the inner wall of a spherical groove on a back cavity structure is provided with a back cavity structure surface electrode; the resonance ball clamped structure and the back cavity structure realize vacuum sealing through a bonding layer, an absolute pressure measurement vacuum cavity is formed between the resonance ball and the spherical groove after sealing, and surface electrodes of the resonance ball are in one-to-one correspondence with surface electrodes of the back cavity structure; a temperature measuring element is arranged on the outer wall of the resonance ball and used for sensing the temperature of the resonance ball in situ, and in-situ temperature error compensation of pressure measurement is achieved. According to the invention, real-time synchronous measurement of pressure and temperature is realized, and in-situ temperature compensation of pressure measurement is also realized, so that the measurement precision, long-term stability and temperature following performance of the pressure sensor are improved.

The application belongs to the field of food processing machines, and discloses a sand-free stir-frying cylinder, which comprises a cylinder body, wherein the cylinder body comprises a material inlet, a front material blocking part, a stir-frying part and a rear material blocking part connected in sequence, and the material inlet forms a circular truncated cone-shaped material channel; the front material blocking part forms a circular truncated cone-shaped front cavity, the top surface of the front cavity is connected with the top surface of the material channel in a coplanar manner; the stir-frying part forms a cylindrical middle cavity, the top surface of the middle cavity is connected with the bottom surface of the front cavity in a coplanar manner; the rear material blocking part forms a circular truncated cone-shaped rear cavity, the bottom surface of the rear cavity is connected with the bottom surface of the middle cavity in a coplanar manner; and the inner wall of at least one of the front material blocking part, the stir-frying part and the rear material blocking part is provided with a ceramic energy storage part. Through the arrangement of the ceramic energy storage part, the temperature in the stir-frying cylinder can be kept stable during the stir-frying process of the material, and the material can be polished without adding auxiliary materials such as sand and soil.

This utility model provides an intelligent force-controlled lightweight lithium-ion battery pruning machine. The machine includes a cutting blade and comprises a motor housing, a gear reduction mechanism, and an eccentric wheel. The motor housing has a motor output end. The gear reduction mechanism is connected to the motor output end and includes a rotating shaft. The eccentric wheel is fixed on the rotating shaft and connected to one end of the cutting blade. The gear reduction mechanism also includes a connecting end, and an oil seal mechanism is provided between the connecting end and the motor output end. This utility model solves the problem of excessive internal moving parts in pruning machines, leading to repeated friction during high-frequency shearing operations, resulting in a higher failure rate and increased equipment maintenance costs.

The invention discloses a metering asset intelligent demand prediction system and method based on an algorithm, and relates to the technical field of metering assets, and the method can gradually output a comprehensive adjustment demand prediction value and a final demand prediction value through introducing a basic demand prediction model and a progressive algorithm, and can accurately reflect the future equipment demand condition. The system establishes a multi-level early warning mode according to the current stock S (t) and the early warning threshold L, so that the early warning level can be dynamically adjusted according to different states of the stock. And in combination with the calculation of the supply and demand difference E1, the system can be helped to carry out preliminary evaluation, so that inventory and demands can be meticulously analyzed in a prediction stage. Compared with a traditional static threshold value monitoring method, the intelligent early warning mechanism has higher response speed and accuracy, the situation of stock overstock or supply interruption is avoided, and therefore reasonable storage of metering assets is guaranteed.

The present invention belongs to the field of hydrogel preparation and discloses a method for preparing a low hysteresis, high stretchability, self-adhesive double chemical cross-linked structure hydrogel. The present invention utilizes the esterification reaction between 2d resin and carboxyl group in acrylic acid to prepare Al 3+ The coordination of ions and acrylic acid forms a double cross-linked hydrogel. The double cross-linked hydrogel with low hysteresis, high tensile strength and self-adhesion prepared by the present invention has the characteristics of simple preparation method and wide range of raw materials, and has great potential applications in the fields of flexible electronic devices, biosensors, wearable devices, and soft robots.

This invention provides a flexible inductive magnetic pressure sensor, comprising a magnetoelastic body unit, a magnetic sensing unit, and a magnetic rebound unit arranged sequentially from top to bottom, wherein the magnetization directions of the magnetoelastic body unit and the magnetic rebound unit are opposite. This invention also provides a flexible inductive magnetic pressure sensor array. Compared with the prior art, this invention utilizes the mutual repulsive force between the magnetoelastic body unit and the magnetic rebound unit with opposite magnetic poles to achieve rapid rebound of the magnetoelastic body, thereby reducing the hysteresis behavior of the inductive magnetic pressure sensor.

The present invention provides a spiroheterocyclic aromatic compound and its application. The spiroheterocyclic aromatic compound has a structure as shown in Formula I. The present invention also discloses the application of the spiroheterocyclic aromatic compound in the preparation of a wide bandgap perovskite solar cell. The wide bandgap perovskite solar cell comprises an ITO conductive glass layer, a hole transport layer, a wide bandgap perovskite absorption layer, an electron transport layer and a metal electrode layer from bottom to top. The preparation method comprises: preparation of a substrate substrate; spin coating a toluene solution of the spiroheterocyclic aromatic compound; preparation of a wide bandgap perovskite absorption layer; preparation of an electron transport layer and a metal electrode layer. The spiroheterocyclic aromatic compound of the present invention has a large steric hindrance as a hole transport layer and has excellent solubility and film-forming properties; and the wide bandgap perovskite solar cell prepared with the spiroheterocyclic aromatic compound as a hole transport layer has high photoelectric conversion efficiency and excellent performance.

This application relates to the field of photovoltaic technology, and particularly to perovskite solar cells, tandem solar cells, and photovoltaic modules. The perovskite solar cell includes a perovskite light-absorbing layer, which comprises perovskite material and amino-functionalized polymer additives. The perovskite material includes materials with the general formula ABX3, where A ions are monovalent cations and B ions include Pb. 2+ The X ion is a monovalent anion; the amino-functionalized polymer additives include at least one selected from polyethyleneimine, polypropyleneimine, amino-functionalized polyetherimide, amino-functionalized polyvinylpyrrolidone, amino-functionalized polyvinyl alcohol, amino-functionalized polyacrylic acid, and amino-functionalized polyquaternary ammonium salt. This application adds amino-functionalized polymer additives to the perovskite light-absorbing layer to passivate defects at perovskite grain boundaries, reduce surface state density, prolong carrier lifetime, increase short-circuit current density, enhance the bending resistance of the perovskite light-absorbing layer, and improve the environmental stability of the device.

The utility model discloses a pressure fine-tuning hydraulic valve group used in coiled tubing equipment, which comprises an overflow pressure reducing valve, a single-bead shuttle valve, a pilot reversing valve and a hydraulic valve block, the overflow pressure reducing valve is arranged on the upper end face of the hydraulic valve block, and a T port, a third port, a fourth port, a P port, a first port and a second port are arranged on the side face of the hydraulic valve block. The pilot reversing valve is arranged on the side face of the hydraulic valve block, the single-bead shuttle valve is arranged on the side face of the hydraulic valve block, and the high-pressure ports in the first port and the second port are communicated to a pilot oil port below through the single-bead shuttle valve. According to the utility model, the pressure of an inlet high-pressure main oil path is adjusted to be reduced to the pressure required by an outlet, meanwhile, the full-flow overflow function from the outlet to an oil tank is realized, the characteristics of pressure / flow are very flat, the stability is good, the hysteresis is very low, and the action of hydraulic equipment is more accurate and stable.

The application discloses an immersive AI process three-dimensional dynamic visualization method based on a particle system, and relates to the technical field of computer graphics and three-dimensional visualization. The immersive AI process three-dimensional dynamic visualization method based on the particle system comprises AI process association operation, AI process particle processing and UI interaction control. The AI process particle processing is executed to obtain an AI particle dynamic structure, the AI process key year switching is executed to obtain camera track-particle disturbance parameter linkage, and the UI interaction control is executed to obtain AI process dynamic visualization time axis interaction, so that the accuracy of immersive AI process three-dimensional dynamic visualization data is improved, and the technical problem of low accuracy of immersive AI process three-dimensional dynamic visualization data in the prior art is solved.

This invention discloses a multilayer piezoelectric ceramic vibration device for improving the strength and plasticity of alloys manufactured by laser additive manufacturing. Belonging to the field of electrical ceramic materials technology, it includes a vibration platform, a function amplifier, a power amplifier, and a multilayer piezoelectric ceramic actuator adapted to the vibration platform. The vibration platform supports a metal substrate and transmits the vibration of the multilayer piezoelectric ceramic actuator to the molten pool during the laser additive manufacturing process. Through the high-frequency stable vibration output by the multilayer piezoelectric ceramic actuator, a strong acoustic flow effect and mechanical disturbance effect are formed in the molten pool region. On the one hand, this accelerates the escape of gas from the molten pool, completely eliminating porosity defects such as pores and shrinkage, solving the problems of incomplete fusion and uneven interface bonding in traditional laser additive manufacturing. On the other hand, it breaks up the coarse dendrites growing in the molten pool, increases the nucleation core, and achieves significant refinement of grains and the second phase structure, ultimately achieving a synergistic improvement in alloy strength and plasticity.

The invention provides a low-coercivity wiegand filament and a preparation method thereof. The wiegand filament comprises the following components in percentage by weight: 10 wt% to 15 wt% of Ni, 3 wt% to 7 wt% of Co, 2 wt% to 5 wt% of Al, 1 wt% to 4 wt% of Si, 1 wt% to 3 wt% of Mn, 0.5 wt% to 2 wt% of Ti, 2 wt% to 5 wt% of Al2O3, 0.2 wt% to 0.6 wt% of Nd and the balance of Fe and other inevitable impurities. The preparation method comprises the steps of raw material weighing, smelting, quenching, heat treatment and multi-stage drawing, and the magnetic performance is further optimized by applying a magnetic field in the process. Through the combination of the nanoscale aluminum oxide particles and the rare earth elements, the coercive force of the Wiegand filament is effectively reduced, meanwhile, the saturation magnetic induction intensity is improved, and the method is suitable for being applied to high-precision sensors and low-energy-consumption magnetic elements.

The invention discloses a pure magnetic driving part assembly fusion speed reduction joint servo system, and belongs to the field of motors. A pure magnetic force driving part assembly fusion speed reduction joint servo system comprises a base speed motor, the base speed motor comprises a motor stator, the inner side of the motor stator is provided with an axially-through stator groove in the circumferential direction, a motor winding is embedded in the stator groove, a high-speed rotor capable of rotating is coaxially arranged in the motor stator, the high-speed rotor is in a circular ring shape, and the high-speed rotor is connected with a motor winding. The high-speed rotor is formed by alternating high-speed rotor magnetic conductive iron cores and high-speed rotor magnets along the circumferential direction; the outer side of the high-speed rotor is coaxially provided with a static and annular magnetism adjusting piece, and the magnetism adjusting piece is formed by alternating magnetism adjusting block magnetic conductive iron cores and magnetism adjusting block non-magnetic conductive pieces in the circumferential direction and used for adjusting the axial magnetic field of the high-speed rotor. A low-speed rotor which is in a circular ring shape and can rotate is coaxially arranged on the outer side of the magnetism adjusting piece, and the low-speed rotor is composed of low-speed rotor magnetic conductive iron cores and low-speed rotor magnets which are alternately arranged in the circumferential direction.

The utility model relates to the technical field of machining, in particular to a double-platform exchange material taking and plate turning conveying line which comprises a multi-shaft mechanical arm and a material platform which are arranged adjacently, and a plate gripper is arranged on the multi-shaft mechanical arm. A first transfer table, a second transfer table, a first horizontal moving mechanism and a second horizontal moving mechanism are erected on the material platform, and the first horizontal moving mechanism and the second horizontal moving mechanism are connected with the first transfer table and the second transfer table respectively. Automatic positioning, feeding and plate turning in the plate production process can be achieved, the turned plate can be directly taken in the subsequent process, and the orderliness is high; two sets of plates can be transferred at the same time through the first transferring table and the second transferring table, the height of the second transferring table is adjusted through the lifting assembly, the second transferring table and the first transferring table are staggered in the height direction, the hysteresis of a production line is reduced, the waiting time of the production line is shortened, the plate production takt is increased, and the production speed is increased.