27 results about "Double phase" patented technology

The invention discloses a double-phase single-feed type connecting shaft tightness real-time early warning system and an installation and use method, belongs to the technical field of pumped storage power generation motors, and aims to overcome the defects of power generator shaft flange and water turbine shaft flange connecting shaft tightness monitoring of an existing pumped storage power generation motor set. The system is composed of an output module, a receiving module, a first locking bolt and a second locking bolt, the output module is matched with a motor shaft flange, the receiving module is matched with a water wheel shaft flange, and the output module and the receiving module form a laser feedback mechanism. The fitting degree of the flange face is quantified in real time through the horizontal dislocation algorithm model and the gap loosening algorithm model, so that the connecting shaft tightness is reversely deduced, the loosening degree of the connecting shaft bolt is accurately judged, and the method has the advantages of being high in precision, rapid in response, capable of giving an early warning in advance, capable of running for a long period without maintenance and the like.

The embodiment of the invention provides a working frequency adjustment method based on double phase-locked loops, a processor and electronic equipment, and relates to the field of integrated circuits. The working frequency adjusting method of the double phase-locked loops is used for adjusting the working frequency of a processor, the processor comprises a first phase-locked loop and a second phase-locked loop, and the working frequency adjusting method of the double phase-locked loops comprises the following steps: receiving an adjusting instruction for adjusting the working frequency of the processor; under the condition that the first phase-locked loop provides a clock signal for the processor, adjusting the second phase-locked loop based on the adjustment instruction; the first phase-locked loop is a current clock source of the processor; and after the second phase-locked loop is adjusted, switching the clock source of the processor from the first phase-locked loop to the second phase-locked loop. The method is helpful for reducing abnormal conditions occurring in the process of adjusting the working frequency of the processor.

The invention discloses a double-phase magnetic flux guide rail coupling system, an inverter circuit, a position detection method and a magnetic field control method. The system comprises an energy transmitting end and an energy receiving end, the energy transmitting end comprises multiple groups of first magnetic core coil devices which are connected in the extension direction, and each first magnetic core coil device comprises a first magnetic core and a first coil; in two adjacent groups of first magnetic core coil devices, two groups of first magnetic cores are directly connected, the current amplitudes are different, and the distances are equal; and in the two groups of first magnetic core coil devices which are closest to each other and have the same current amplitude, the winding directions of the first coils are opposite. According to the system, two-phase decoupling can be realized, the modeling difficulty of a magnetic circuit is reduced, the utilization rate of a magnetic field is improved, a two-phase driving mode in which two-phase output is completely independent can be realized, and finally wireless power transmission in the advancing process is realized. In addition, the position information of the vehicle can be detected, meanwhile, the output fluctuation of the voltage can be reduced by controlling the magnetic field, and the system stability and the energy utilization efficiency are improved.

The invention is applicable to the technical field of metal material welding, and provides a duplex stainless steel pipe welding method which comprises the following steps: S1, performing transient eutectic liquid phase diffusion pretreatment on a groove, and forming a nanocrystalline composite activation layer rich in nickel, nitrogen and rare earth oxides in the groove in situ; s2, a microalloyed welding wire with specific components is adopted for welding, and the welding wire contains 0.8 wt%-1.5 wt% of Cu and 0.01 wt%-0.03 wt% of P which are cooperatively added; s3, after welding, interface excitation and high-temperature and high-pressure nitrogen directional penetration cooperative treatment is conducted; the pretreated nanocrystalline composite activation layer and Cu and P in the welding wire are subjected to a synergistic metallurgical reaction during welding, Ni-Cu-P clusters are generated, the phase boundary can be pinned, the structure can be refined, and a welding seam can be purified in situ; meanwhile, the nanocrystalline composite activation layer provides a high-speed channel for subsequent directional permeation of nitrogen atoms, so that a nitrogen-rich strengthening region is formed on the inner wall of the joint; according to the method, the weak area of the fusion line is fundamentally eliminated, homogenization and functional gradient of the joint structure performance are achieved, and the comprehensive performance is improved.

The invention relates to the technical field of titanium alloy machining, in particular to a large-diameter TA15 bar forging method and a large-diameter TA15 bar. The forging method comprises the steps that S1, a TA15 cast ingot is subjected to cogging forging, and a primary forging stock is obtained; s2, phase change point testing is conducted on the primary forging stock, and the phase change point temperature T beta is obtained; s3, the primary forging stock is subjected to single-phase region forging, a single-phase region forging stock is obtained, and single-phase region forging is variable-parameter forging; s4, the single-phase region forging blank is subjected to double-phase region forging, a double-phase region forging blank is obtained, and double-phase region forging is constant-parameter forging; and S5, finished product forging is conducted on the biphase region forging blank, drawing-out and rounding are conducted, and the large-diameter TA15 bar is obtained. According to the forging method, through single-phase region progressive decrease type deformation forging and two-phase region constant parameter forging, full refining of crystal grains is achieved, and the problem that in a conventional forging method, mechanical property anisotropy is obvious is solved.

The invention belongs to the field of titanium alloy thermal deformation structure control, and relates to a preparation method of a high-comprehensive-performance double-phase double-lath structure Ti2AlNb alloy component, which comprises the following implementation steps of: 1, measuring a key phase transformation point of a Ti2AlNb alloy; 2, step heating of the blank for component preparation; and 3, carrying out single-phase region thermal deformation on the blank B2. 4, performing primary heat treatment on the blank; and 5, carrying out secondary heat treatment on the blank. According to the method provided by the invention, the Ti2AlNb alloy component with the B2 + OI + OII double-phase double-lath structure can be prepared. Through accurate measurement of a phase change temperature interval, stepped heating, B2 single-phase region thermal deformation and double thermal treatment of a B2 + O phase region, effective control over the variety, morphology and proportion of B2 crystal grains and precipitated phases is achieved, and a microscopic structure with the O phases of large and small braided laths distributed on a small original B2 crystal grain matrix is prepared. The member with the structure has excellent strength, plasticity and thermal stability.

The invention relates to the technical field of high-temperature alloy heat treatment, in particular to a method for presetting residual stress of a high-temperature alloy disc annular part. The method for presetting the residual stress of the high-temperature alloy disc annular part comprises the following steps that the surface of a non-inner-hole area of the high-temperature alloy disc annular part is subjected to coating treatment, and a pretreated part is obtained; solid solution heat treatment is conducted on the pretreated part, then first forced cooling is conducted on the inner hole area, a cooling medium is a single-phase medium or a double-phase medium, and a first treated part is obtained; and aging heat treatment is conducted on the first treatment piece, then second forced cooling is conducted on the inner hole area, and the cooling medium is a single-phase medium or a double-phase medium. According to the method, the distribution characteristics of an internal temperature field of the high-temperature alloy disc ring-shaped part are effectively changed by regulating and controlling the heat exchange coefficients of different positions of the high-temperature alloy disc ring-shaped part in the cooling process and the differentiated design of local cooling behaviors, so that a target residual stress distribution form is formed; and the reliability, the structural stability and the service life of the high-temperature alloy disc annular part in the service process are improved.

The invention belongs to the technical field of titanium alloy materials, and particularly relates to a high-strength and high-plasticity alpha + beta double-phase titanium alloy based on collaborative evolution strengthening of multiple metastable phases and a preparation method of the high-strength and high-plasticity alpha + beta double-phase titanium alloy. The titanium alloy comprises the following chemical components in percentage by mass: 5.5 to 6.5 percent of Al element, 1.8 to 2.2 percent of Fe element, 2.3 to 2.7 percent of Nb element, 1.3 to 1.7 percent of Mo element, 1.3 to 1.7 percent of V element, 1.3 to 1.7 percent of Zr element and the balance of Ti. Solution quenching treatment is carried out in an alpha + beta two-phase region to obtain multiple metastable phases, and then aging treatment is carried out at 350-500 DEG C for 0.25-24 hours. According to the high-strength titanium alloy and the preparation method thereof, the alloy strength is greatly controlled and adjusted within the range of 1200-1800 MPa through cooperative regulation and control of various metastable phases, and therefore the performance bottleneck of a traditional high-strength titanium alloy in the aspect of strength and plasticity matching is broken through.

Arrangements, subsystems, devices and methods for providing cooling to hardware components, and more particularly to server cold plate loop (CPL) subsystems, devices and methods for thermal management of hardware in computer server cabinets and computer data center related equipment.

The invention relates to a double-phase multi-principal-element alloy component design method for a laser melting deposition titanium steel connection transition layer, which aims at constructing a single-layer double-phase solid solution transition layer containing main alloy elements in titanium alloy and steel and combining experience criteria of phase stability of a multi-principal-element alloy system, high-flux phase diagram calculation and machine learning feature engineering. And efficient screening and quantitative design of the biphase transition layer alloy components are achieved. According to the method, the phase composition characteristics and the element proportion of the transition layer multi-principal element alloy system can be predicted in the design stage, it is guaranteed that when the transition layer components change, the forming stability of a solid solution structure is still kept, and forming of harmful intermetallic compounds is inhibited; and meanwhile, the problems of transition layer thickness, heterogeneous interface defects and preparation process complexity caused by introduction of a multi-layer composite transition layer are reduced, so that the metallurgical bonding performance of the titanium alloy and steel heterogeneous interface is improved, and a scientific basis and a calculation method support are provided for design and optimization of a heterogeneous metal connection transition layer alloy system.

The present invention relates to an electric machine having a first three-phase winding and a second three-phase winding, the stator being formed of a cylindrical yoke made of a soft ferromagnetic material having a set of radially extending teeth that support a plurality of the windings, the windings being separate from one another, the first three-phase winding being connected in a delta configuration and the second three-phase winding being connected in a star configuration.

The application discloses a double-stage aging heat treatment method of an FCC / B2 dual-phase high-entropy alloy and belongs to the technical field of high-entropy alloys. The double-stage aging process combining high-temperature aging and low-temperature aging is developed to simultaneously optimize the precipitation phase characteristics in the FCC / B2 two-phase matrix, effectively improve the microstructure of the FCC / B2 dual-phase high-entropy alloy, realize effective regulation of the FCC / B2 dual-phase high-entropy alloy organization form, and significantly improve the room-temperature and high-temperature strength and plasticity of the alloy. The mechanical properties of the alloy in a wide temperature range are obviously improved, and good matching between the high strength and the high plasticity of the alloy is realized.

The invention belongs to the technical field of metal material heat treatment, and particularly relates to a double-phase region strengthening and toughening heat treatment method of a seamless steel pipe for a high-toughness drill pipe, which comprises the following steps: heating the seamless steel pipe to a double-phase region temperature T1, preserving heat, and then quickly cooling; the temperature T1 of the two-phase region is within the range of 30-50 DEG C below the Ac3 temperature; the cooled seamless steel pipe is heated to the tempering temperature T2, heat preservation is conducted, and then air cooling is conducted to the room temperature; the tempering temperature T2 is in the range of 500 DEG C to 20 DEG C below the Ac1 temperature. A combined process of double-phase region quenching and high-temperature tempering is adopted, the heating temperature, the heat preservation time and the cooling mode of a double-phase region are accurately controlled, and a fine ferrite and tempered sorbite double-phase structure with a coordinated proportion is formed in the steel pipe, so that the impact toughness, the fatigue strength and the fracture toughness of the steel pipe are remarkably improved while the high strength is ensured.

The invention relates to the technical field of wireless communication, and discloses an environment backscatter communication enhancement method and system based on biphase detection, and the method comprises the steps: obtaining an environment radio frequency signal received by an antenna, and generating an in-phase component I-path signal and an orthogonal component Q-path signal through two-path orthogonal demodulation, generating a binary state identifier representing an antenna matching state; a historical state identifier sequence is formed based on the identifier, an energy-communication alternating period is identified, the average duration is counted, and a phase switching prediction signal is generated in combination with the identifier; receiving a prediction signal to generate a switching control sequence, analyzing a target state type to generate a modulation control instruction, and executing the modulation control instruction to form closed-loop optimization; according to the invention, bit synchronization drift and judgment threshold offset caused by carrier multipath attenuation in the shadow area of the large-span metal structure can be effectively relieved, and the communication stability is guaranteed.

The invention belongs to the technical field of magnesium-lithium alloy plastic processing, and particularly relates to a high-strength and high-damping magnesium-lithium alloy and a preparation method thereof. The magnesium-lithium alloy is prepared from the following components in percentage by mass: 5.2 to 7.5 percent of Li, 2.5 to 4.5 percent of Al, 0.6 to 2.5 percent of Zn, 0.3 to 1.0 percent of Ce, 0.3 to 0.8 percent of Mn, 0.3 to 0.8 percent of Ca and the balance of Mg. According to the invention, an alloying design concept of a double-phase structure is adopted, and a multidirectional forging, hot rolling and cold rolling composite forming process is developed, so that synergistic refinement of grains of the double-phase structure is realized, twin crystals are introduced, a multi-scale interface of the twin crystals and an alloy beta-Li / alpha-Mg phase is constructed, and more hindrance is provided for energy dissipation in the material; and the mechanical property and the damping property of the magnesium-lithium alloy are synergistically improved. The damping loss factor of the magnesium-lithium alloy is higher than 0.01 at the temperature of-60 DEG C to 210 DEG C, reaches the peak value of about 0.1 at the temperature of 200 DEG C, and belongs to the high-damping magnesium-lithium alloy. The magnesium-lithium alloy disclosed by the invention has a wide application prospect in the fields of aerospace, airborne electronic equipment, mobile communication devices and the like.

The invention discloses an acoustic modeling method based on a Voronoi layered double-phase microstructure, which comprises the following steps: generating a Voronoi crystal grain structure according to the average crystal grain size of a polycrystalline metal material; the method comprises the following steps: constructing a layered double-phase microstructure geometric model by setting interlayer spacing and an area proportion coefficient; different elastic matrixes are given to the grain matrix and the layered second-phase microstructure through a Bond transformation method; according to the elastic matrix, a solid mechanics physical field, an ultrasonic excitation source and boundary conditions are set through joint simulation software, grid division is conducted, and an acoustic simulation model used for simulating ultrasonic propagation is established; and according to the acoustic simulation model, setting a solver for calculation so as to obtain and output the propagation characteristics of the ultrasonic waves in the layered double-phase microstructure. The method disclosed by the invention is of great significance to research on the propagation rule of the ultrasonic waves in the polycrystalline metal material with the layered double-phase microstructure.

The invention discloses a set top box terminal safety monitoring system based on artificial intelligence. The set top box terminal safety monitoring system comprises an operation data acquisition module, a dual-band feature extraction layer module, a double-image shaping layer module, a set top box operation deduction model design module, a situation transition optimization module and a real-time set top box terminal safety monitoring module. The invention belongs to the field of safety monitoring, and particularly relates to a set top box terminal safety monitoring system based on artificial intelligence, according to the scheme, an Euler formula is introduced to convert biphase characteristics, so that a biphase activation function is designed, and amplitude-phase bidimensional coupling representation of a set top box is realized; designing an attack sensitivity coefficient based on a trend mutation degree, and distinguishing different trend states; the correctness of the deduction direction is constrained by constructing an angular cost loss function, and the attack detection rate is improved; quasi deviation loss during delay factor design is introduced, a cross-sign law is learned, and security situation awareness of multi-index coupling of the set top box is met; and the safety monitoring reliability of the set top box terminal is improved.

The invention provides an intelligent regulation and control method for a microstructure in a double-phase titanium alloy hot spinning forming process. The method comprises the following steps: designing an orthogonal experiment, researching internal relations among an initial phase, a phase volume fraction, process parameters and the microstructure in a constant strain rate deformation process and a variable strain rate deformation process, and constructing a microstructure prediction model; establishing a unified physical mechanism constitutive model related to the forming process, and determining the incidence relation among the rheological behavior, the deformation parameter and the microstructure; a microstructure prediction model in the double-phase titanium alloy hot spinning forming process is further constructed in an integrated mode, and the mapping relation among spinning parameters, the initial phase and the phase volume fraction and the space-time evolution rules of phases in the component is determined; and in combination with a machine learning algorithm, outputting the optimal process parameter range according to the deviation between the microstructure predicted value of the component and the target quantity in the spinning forming process. The problem that the microstructure is difficult to regulate and control in the hot spinning forming process of the double-phase titanium alloy can be solved.

The utility model relates to the technical field of bearing sizing equipment, in particular to a duplex stainless steel bearing inner hole sizing device which comprises a base, and a stainless steel bearing body is placed on the upper end face of the base. Through the arrangement of the first block, the second block, the connecting threaded groove, the first sizing column, the second sizing column and the connecting threaded column, when the inner hole of the stainless steel bearing body needs to be sized, the first sizing column and the second sizing column are fixedly mounted on the first block and the second block through the matching threads of the two connecting threaded columns and the connecting threaded groove respectively; then the stainless steel bearing body is placed on the base, the first sizing column and the second sizing column are located in the inner hole of the stainless steel bearing body, and sizing of the inner hole of the stainless steel bearing body can be achieved through the first sizing column, the second sizing column, the knob block and the vernier caliper; and the first sizing column and the second sizing column can be detached from the base, so that the whole device is easier to carry and more practical.

The application provides a narrowband modulation and demodulation method and system suitable for cross-border magnetic induction communication, and belongs to the field of magnetic induction communication. ‑2 The application provides a minimum shift keying (QM-VMSK / 2) encoding modulation method based on quadrature modulation, which realizes parallel transmission through quadrature modulation to double the data rate under the condition of keeping the same bandwidth as the minimum shift keying (VMSK) encoding modulation signal; and a decoding method based on double-phase code detection, which has better anti-noise interference ability compared with the detection method based on zero-crossing detection and double-phase code pulse width discrimination, and has a signal-to-noise ratio gain of more than 2.5 dB when the bit error rate is 10 ‑2 The QM-VMSK / 2 modulation and demodulation technology can provide a narrowband modulation method for underwater magnetic induction communication, reduce the distortion of high-rate signals in the underwater dispersion channel, realize high-rate cross-border magnetic induction communication under the condition that the carrier frequency and the data rate have the same order of magnitude, and improve the communication range x data rate performance limit of magnetic induction communication.

The invention provides a MnO high-entropy alloy composite material based on dynamic phase change and a preparation method of the MnO high-entropy alloy composite material, and relates to the technical field of electromagnetic wave absorbing materials. The preparation method comprises the three steps of high-entropy metal organic framework synthesis, air atmosphere calcination and reducing atmosphere treatment, and is simple to operate, high in controllability, mild in condition, low in energy consumption and suitable for laboratory amplification and industrial preparation; according to the prepared product, uniform distribution of multiple metal elements in the atomic scale can be achieved, the problems of component segregation and phase instability easily occurring in a traditional ball milling or smelting method are effectively solved, and the chemical and structural uniformity of a composite system is improved from the source; and the product has an adjustable double-phase structure characteristic, the MnO phase content can be flexibly adjusted by changing the reduction heat preservation time, electromagnetic absorption performance optimization under different frequency bands is realized, and a new thought is provided for customizing a broadband wave-absorbing material.

The invention provides a direct-current double-phase contactor, and belongs to the technical field of contactors. The direct-current double-phase contactor comprises a base, a plurality of coil assemblies, a contact assembly, an arc extinguishing assembly and a reset assembly, the coil assemblies are arranged on the base at intervals, the contact plate with the movable contacts is installed on the rotating arm of each coil assembly, and the static contacts matched with the movable contacts are arranged on the base, so that each coil assembly can operate independently, on-off control over different circuits is achieved, the influence of unified control is avoided, and the reliability of the circuit breaker is improved. And meanwhile, the static contacts corresponding to the movable contacts at the same positions on the contact plates corresponding to the different coil assemblies are grouped and connected in series, so that different circuits can be connected into the same circuit through the corresponding coil assemblies, and the control of different branch circuits is realized. And when one coil assembly is damaged, the other coil assembly can be used for controlling, so that the structural adaptability and reliability are improved.

There is provided a pixel transform method for JPEG / MPEG compression of double phase-amplitude coded holograms. According to an embodiment, a hologram compression method transforms a hologram represented by a complex number into a hologram represented only by a phase, rearranges pixels of the transformed hologram, and compresses the rearranged hologram. Pixels of a DPAC hologram are rearranged before the DPAC hologram is compressed in a standardized image / video compression technique, so that a high frequency component is prevented from occurring when a hologram is compressed. Accordingly, hologram quality degradation occurring when a DPAC hologram is used in a standardized image / video compression technique can be prevented.

The invention provides a high-strength corrosion-resistant antibacterial double-phase high-entropy alloy and a preparation method thereof, and belongs to the technical field of metal material preparation. The high-strength corrosion-resistant antibacterial double-phase high-entropy alloy comprises the following components in percentage by mole: 18%-30% of Cu, 28%-32% of Fe, 16%-20% of Mn, 16%-20% of Ni and 5%-15% of Cr. The high-entropy alloy is of a double-peak grain heterostructure and is composed of a coherent Cu-rich face-centered cubic (FCC) solid solution (fine grains) and Fe-rich FCC solid solution (ultra-fine grains / nanocrystalline) double-phase structure, the strength of the alloy is greatly improved through the solid solution strengthening and fine grain strengthening effect, the double-phase corrosion potential is balanced by adding the Cr element, dissolution of Cu ions is promoted, and the mechanical property of the alloy is improved. The alloy has excellent seawater corrosion resistance and antibacterial performance, and the structure-function integrated double-phase high-entropy alloy has wide application prospects in the field of ocean engineering.

The invention provides a broadband wave-absorbing and frequency-point-adjustable nested wave-absorbing structure. The wave-absorbing structure comprises a height adjusting assembly and a plurality of wave-absorbing units distributed in an array; the wave absorbing unit comprises a double-phase nested structure layer and a reflecting layer, the double-phase nested structure layer is movably arranged on the reflecting layer, the surface of the double-phase nested structure layer is covered with a resistive film, and the double-phase nested structure layer comprises a first embedding piece and a second embedding piece which are vertically nested; the height adjusting assembly comprises a first height adjusting piece and a second height adjusting piece, the first height adjusting piece is used for adjusting the distance between the first embedding piece and the reflecting layer, and the second height adjusting piece is used for adjusting the distance between the second embedding piece and the reflecting layer. By adjusting the height of the double-phase nested structure, broadband wave absorption and strong electromagnetic wave absorption frequency point regulation and control capacity of different wave bands can be achieved, frequency-adjustable frequency points exist in S, C, X and Ku wave bands, the reflection loss is better than-15 dB, and good application prospects are achieved in broadband and frequency-point-adjustable electromagnetic wave absorption scenes.

An apparatus includes a first phase on timer configured to generate a first reset signal for determining a turn-off instant of a high voltage side switch of a first phase of a power converter; a feedback control circuit configured to generate a first set signal for determining a conduction instant of the high voltage side switch of the first phase of the power converter; a second phase on timer configured to generate a second reset signal for determining an off moment of a high voltage side switch of a second phase of the power converter; and a delay generator configured to generate a delayed signal for determining a phase shift between the first phase and the second phase of the power converter.