31 results about "Magnetostrictive transducers" patented technology

The invention relates to the technical field of ground wire damage detection, and provides a ground wire damage detection method and system based on magnetostrictive guided waves, and the method comprises the following steps: generating a white noise signal through a magnetostrictive transducer to excite a ground wire, and collecting a guided wave response signal of the guided waves; identifying the guided wave response signal through a spectrum analysis model to obtain the inherent frequency characteristic of the ground wire, and obtaining the optimal excitation frequency according to the inherent frequency characteristic and the amplitude frequency mapping relation; adjusting the excitation frequency of the white noise signal according to the optimal excitation frequency to obtain an optimized guided wave signal; identifying the optimized guided wave signal through a defect detection and tension monitoring model to obtain a defect tension detection result; and based on the defect tension detection result, judging the damage level of the ground wire, and generating a detection report. According to the invention, defect detection and tension abnormity monitoring are carried out at the same time, the reliability of ground wire detection is improved, and an effective monitoring means is provided for safe operation of the ground wire.

The invention discloses a giant magnetostrictive bar health state evaluation method considering subharmonic content, which comprises the following steps of: firstly, obtaining output displacement data of a giant magnetostrictive bar through a built giant magnetostrictive bar test platform; in order to select the filter length and the mode decomposition number of the characteristic mode decomposition method, combining with the Shannon entropy coefficient, taking the square envelope spectrum kurtosis as a weight, constructing a weighted square envelope spectrum kurtosis Shannon entropy coefficient objective function, and performing parameter optimization by using a Harris eagle optimization algorithm; according to the method, the principle of maximum square envelope spectrum kurtosis is taken as a principle to select a main mode component, finally, envelope spectrum analysis is carried out, the health state of the giant magnetostrictive bar is evaluated by counting the sub-harmonic content in the envelope spectrum, and the method plays a guiding role in development and application of a giant magnetostrictive transducer. And the service life of the subsequent transducer can be detected and evaluated.

The invention belongs to the technical field of magnetic variable measurement, and particularly relates to a power driving compensation method and system for magnetostrictive load characteristic monitoring, and the method comprises the steps: obtaining a reference zero point of magnetic performance evolution in a cold state environment of an electromagnetic system according to the center frequency of the electromagnetic system; calculating a current main frequency impedance module value and a phase difference through an electrical parameter characterization method, and obtaining a thermal drift index reflecting a hysteresis loop distortion degree in combination with a reference zero point; obtaining correction factors of all orders based on the thermal drift index and the average output power at the current moment, and dynamically updating a coefficient vector of the inverse model; and constructing a pre-distortion driving voltage signal capable of counteracting nonlinear interference by using the new coefficient and the ideal guided wave voltage sequence, and inputting the pre-distortion driving voltage signal to a power amplifier to drive the magnetostrictive transducer. According to the invention, the problem of predistortion failure under a variable-temperature working condition in the prior art is solved, and the signal-to-noise ratio of high-power long-distance guided wave detection is remarkably improved.

The invention discloses a super-magnetostrictive transducer electromagnetic energy loss optimization method based on SCReg-PGNN, and the method comprises the steps: building a super-magnetostrictive bar magnetic energy loss test platform to test the magnetic energy loss under different working conditions, then carrying out the precise calculation of the electromagnetic loss of an excitation coil through considering the skin effect, proximity effect and fringe effect, and carrying out the optimization of the electromagnetic energy loss of the excitation coil. And finally, establishing an electromagnetic energy loss model of the high-power giant magnetostrictive transducer based on SCReg-PGNN, carrying out rapid calculation on electromagnetic loss characteristics of the giant magnetostrictive transducer, and finally, searching for optimal electromagnetic structure parameters of the high-power giant magnetostrictive transducer by means of a particle swarm optimization algorithm of non-dominated sorting. According to the method, high-precision modeling and response prediction of the electromagnetic loss of the transducer can be realized under the conditions of multiple working conditions and multivariable input, and collaborative optimization of structural parameters under multiple targets is further realized, so that the overall energy efficiency and the working reliability of a transducer system are improved.

The invention discloses a dynamic stress measurement system and method for a giant magnetostrictive transducer. Comprising a power supply circuit; the power supply circuit is connected with the giant magnetostrictive transducer, the giant magnetostrictive transducer comprises a vibrator and a shell, the vibrator is arranged in the shell, and the upper end and the lower end of the vibrator are connected with the shell; the upper end and the lower end of the vibrator are both provided with the measuring rods, and the vibrator is connected with the shell through the measuring rods; the first anti-magnetic field strain gauge comprises two first resistance-type strain gauges and a first insulating material film, the two first resistance-type strain gauges are respectively a test piece A and a test piece B, and the test piece A is bonded with the measuring rod; and the positive electrode wire and the negative electrode wire of the first anti-magnetic field strain gauge are respectively connected with an access channel of the dynamic strain gauge. And the actual stress change in the giant magnetostrictive transducer can be effectively measured.

The application belongs to the technical field of transmission system monitoring and diagnosis, and particularly relates to a hydraulic automatic transmission oil viscosity sensor based on magnetostrictive material. The sensor comprises a sensor main body, a magnetostrictive transducer, an oil inlet and an oil outlet, a flow channel device, a T-shaped detection cavity and a magnetic field generating device. The sensor utilizes the physical characteristics of magnetostrictive material to realize high-precision and high-sensitivity real-time on-site detection of oil viscosity, reduces the cost of detection instruments and simplifies the maintenance requirements, can meet real-time monitoring of the state of lubricating oil, and can also perform on-site sampling detection.

The invention discloses a magnetostriction multi-mode ultrasonic wave prevention and removal method for ship body protection, and relates to the technical field of ship ocean engineering. The method comprises the following steps: installing a magnetostrictive transducer array in a ship body, inputting a modulated driving electric signal to the magnetostrictive transducer array based on a corresponding working mode, and exciting transducers to generate high-power mechanical vibration; the mechanical vibration is coupled to a ship body steel plate to excite an ultrasonic composite field comprising at least two modes of longitudinal waves, transverse waves and surface waves; and inhibiting the attachment of the marine organism larvae and / or removing the attached marine organisms by utilizing the interface stress, cavitation effect and sound stream generated by the ultrasonic composite field. High-strength and multi-mode ultrasonic waves can be excited through the magnetostrictive transducer, a complex stress field and a strong sound stream are generated in the hull shell, so that attached organisms are effectively removed, and a microenvironment which is not beneficial to attachment of biological larvae is created.

The invention discloses a grouting device and method for effectively enlarging the weak permeable stratum reinforcement range, and belongs to the technical field of grouting construction equipment.The grouting device comprises an auxiliary mechanism, the auxiliary mechanism comprises a chassis, a support is arranged on the chassis, an ultrasonic grouting mechanism is arranged on the support, and the ultrasonic grouting mechanism comprises a magnetostrictive transducer; the magnetostriction transducer is communicated with a secondary amplitude intensifier, the magnetostriction transducer is connected with an ultrasonic generator, the ultrasonic generator is connected with a control system, and the secondary amplitude intensifier is communicated with a grouting pump through a one-way valve. Ultrasonic waves are introduced into a grouting system, ultrasonic energy is transmitted through grouting liquid, the effect of grouting while disturbing is achieved, the grouting pressure is controlled within 0.4 MPa, and structural safety is guaranteed.

The application discloses a double-excitation super-magnetic elliptical vibration turning tool rest device, which comprises amplitude rods and super-magnetic strain transducers, the amplitude rods are two, are arranged in a V shape and form an integrated structure, the integrated structure is provided with a tool blade mounting groove at the tail end, each amplitude rod is fixedly connected to the super-magnetic strain transducer, and the two super-magnetic strain transducers are connected to the tool rest through two clamping blocks respectively. The tool rest rod is formed by crossing two amplitude rods, the super-magnetic strain transducers are connected to the tail end respectively, the two super-magnetic strain transducers are controlled to realize the circular vibration track of the tool tip of the tool blade mounted on the tool rest rod, the turning tool body is integrated on the double amplitude rods crossed in a V shape, the transducer shell is mounted on the tool rest, the mechanical rigidity of the tool is improved, the ultrasonic energy transmission loss is reduced, and the machining performance is improved.

The invention discloses a magnetostrictive transducer, which comprises: a housing; the backing is arranged at one end of the shell in a sealed manner; one end of the magnetic core is fixedly connected with the backing, the magnetic core extends along the length of the shell and is arranged in the shell, and a coil is wound on the outer surface of the magnetic core; the amplitude-change pole is made of a material with the magnetostriction coefficient opposite to the magnetostriction coefficient of the magnetic core, the amplitude-change pole is fixedly connected with the other end of the magnetic core, and the amplitude-change pole is arranged at the other end of the shell in a closed mode; the backing, the magnetic core and the amplitude-change pole are sequentially connected and form a closed magnetic loop with the shell, materials with positive and negative magnetostriction coefficients are combined in the same magnetic loop, when the coil generates a magnetic field, the magnetic core with magnetostriction and the amplitude-change pole are subjected to the action of the magnetic field, the positive value material is excited to longitudinally extend, and the positive value material is excited to longitudinally extend. And meanwhile, the negative value material is excited to longitudinally shrink, so that a high-power transducer with high energy conversion efficiency is formed.

The application relates to an integrated heat dissipation structure for a giant magnetostrictive transducer, which internally cools the transducer from two aspects. One aspect is to reduce heat generation. In order to inhibit eddy current loss of a permanent magnet ring, the complete permanent magnet ring is first divided into a tile-shaped permanent magnet ring, and the tile-shaped permanent magnet ring is coated with insulating paint. Secondly, in order to inhibit eddy current loss of a 3D-printed copper alloy framework, a longitudinal and transverse intersecting cross-shaped fine gap is designed in the internal structure of the two end disc structures and the middle circular tube structure of the integrated framework, and the surfaces of the left and right frameworks are coated with insulating paint. The other aspect is to increase heat conduction. The permanent magnet ring placement structure and the coil winding structure are integrated into a framework. In order to facilitate the installation of the tile-shaped permanent magnet ring, the framework is divided into two parts which can be separated left and right. After the tile-shaped permanent magnet ring is installed, the left and right frameworks are assembled into an integral framework through the mortise and tenon structures at the upper and lower ends. Secondly, the air gap generated during assembly is coated with heat-conducting silicone grease.

The utility model belongs to the technical field of underwater acoustic transducer production, and discloses a bonding device of a magnetostrictive transducer driving vibration element, which comprises a bottom plate, a top plate and two semi-cylindrical clamps symmetrically mounted on the bottom plate, and four double-end support rods distributed between the bottom plate and the top plate, two limiting grooves are symmetrically formed in each semi-cylindrical clamp and used for installing a driving vibration element, a top pressing plate is arranged between the driving vibration element and the top plate, four stress application nuts are evenly distributed in the middle of the top plate, correspond to the driving vibration elements one to one and are concentric, and the stress application nuts are in threaded connection with the top plate. And the screw is used for screwing and applying axial pressing force to the driving vibration element. According to the bonding device for the driving vibration element of the magnetostrictive transducer, the process of bonding operation of the driving vibration element is simplified, assembling of a clamp can be achieved through fastening of conventional screws, complexity of manual operation is reduced, operation feasibility is improved, bonding precision is improved, bonding efficiency is improved, and prestress and stress uniformity are accurately controlled.

The invention relates to the technical field of magnetostrictive micromechanical transducers, and provides a magnetostrictive transducer, comprising: a sensitive unit having a laminated structure formed by positive and negative magnetostrictive materials, the lamination direction being configured to be parallel to the direction of a magnetic field to be measured; the collecting coil is configured to be wound on the sensing unit along the long axis direction; and the fixing tool is configured to support winding of the collecting coil on the sensitive unit and fix at least one end of the sensitive unit in the long axis direction. By making full use of the opposite mechanical response performance of the positive / negative magnetostriction material, when the positive and negative magnetostriction materials are subjected to opposite tension and compression stress, the conversion directions of magnetic domains in the lamination are consistent, the lamination internal induced magnetic field variation superposition effect is formed, and the signal attenuation problem caused by the size effect can be greatly offset; meanwhile, the sensitivity and the detection performance of the whole device can be improved by designing a strength positive correlation bias magnetic field which is most adaptive to the resonant frequency based on the device and introducing prestress.

The application discloses a health state evaluation method of a giant magnetostrictive rod considering sub-harmonic content, and first obtains output displacement data of the giant magnetostrictive rod through a built giant magnetostrictive rod test platform; in order to select a filter length and a modal decomposition number of a characteristic modal decomposition method, a weighted square envelope spectrum kurtosis Shannon entropy coefficient objective function is constructed by taking a square envelope spectrum kurtosis as a weight value in combination with a Shannon entropy coefficient, and a Harris eagle optimization algorithm is used for parameter optimization; the selection of a main modal component is performed according to the principle that the square envelope spectrum kurtosis is maximum, envelope spectrum analysis is further performed, the sub-harmonic content is counted, and the health state evaluation of the giant magnetostrictive rod is realized, which plays a guiding role for the development and application of the giant magnetostrictive transducer and plays a detection and evaluation role for the service life of the subsequent transducer.

The application relates to a dynamic sealing structure of a downhole double-actuator giant magnetostrictive transducer, which dynamically seals the output rod of the giant magnetostrictive actuator from two aspects. One aspect is to prevent water from entering, rubber sleeves capable of fitting the output rod and the connecting ring in shape are arranged at both ends of the central through hole of the connecting ring, and a suitable adhesive is selected to bond the rubber sleeves on the output rod and the connecting ring, and the elastic rubber sleeves are used for dynamically sealing the output rod in axial reciprocating motion. Secondly, O-ring grooves are designed on the side wall of the central through hole of the connecting ring and the output rod, and the O-rings are respectively arranged in the grooves on the side wall of the central through hole of the connecting ring and the output rod in the form of being embedded or sleeved, and the O-rings are compressed and deformed through interference fit with the contact surfaces of the output rod and the connecting ring to prevent water from entering. The other aspect is water storage, the upper connecting ring and the lower connecting ring are manufactured by using a metal 3D printing technology, and the entering water is guided to the water storage groove through the drainage groove and the funnel-shaped drainage channel structure in the connecting ring.

The invention belongs to the technical field of underwater acoustic transducer production, and discloses a magnetostriction transducer driving vibration element bonding device which comprises a bottom plate, a top plate and two semi-cylindrical clamps symmetrically installed on the bottom plate, four double-end supporting rods are evenly distributed at the four corners between the bottom plate and the top plate, and the two semi-cylindrical clamps are symmetrically installed on the bottom plate. Two limiting grooves are symmetrically formed in each semi-cylindrical clamp and used for installing a driving vibration element, a top pressing plate is arranged between the driving vibration element and the top plate, four stress application nuts are evenly distributed in the middle of the top plate, correspond to the driving vibration elements one to one and are concentric, and the stress application nuts are in threaded connection with the top plate. And the screw is used for screwing and applying axial pressing force to the driving vibration element. According to the bonding device for the driving vibration element of the magnetostrictive transducer, the process of bonding operation of the driving vibration element is simplified, the clamp can be assembled through fastening of conventional screws, complexity of manual operation is reduced, operation feasibility is improved, bonding precision is improved, bonding efficiency is improved, and prestress and stress uniformity are accurately controlled.

In the method described herein and in a device for operating an electromagnetic, in particular magnetostrictive, sensor or transducer (500), in particular a position measurement system (500, 505), in particular by evaluating signal variables (120, 125) in the region of a baseline or null line (105) of a measurement signal provided by the sensor / transducer (500), the signal variables (120, 125) are evaluated in the region of the baseline or null line (105) of the measurement signal provided by the sensor / transducer (500). A mechanical shock and / or a vibration state, for example occurring during operation of the sensor / transducer (500) or a vibration of the sensor / transducer (500) caused thereby, is detected.

The invention relates to the technical field of ultrasonic temperature measurement sensors, in particular to a high-precision ultrasonic temperature measurement sensor based on magnetostriction and a temperature measurement method, and the sensor comprises a first magnetostriction transducer, a second magnetostriction transducer, a pulse generator, a band-pass filter, an amplifier and an upper computer. The tail end of a magnetostriction rod of the first magnetostriction transducer is coaxially connected with a first waveguide rod, and the tail end of a magnetostriction rod of the second magnetostriction transducer is coaxially connected with a second waveguide rod; the head end of the first waveguide rod is aligned with the head end of the second waveguide rod; the tail end of the first waveguide rod exceeds the tail end of the second waveguide rod; the signal output end of the pulse generator is electrically connected with a coil of the first magnetostrictive transducer and a coil of the second magnetostrictive transducer. The problems that an existing ultrasonic temperature measurement sensor is low in measurement precision and poor in working reliability are effectively solved, and the ultrasonic temperature measurement sensor is suitable for the fields of aerospace, industrial manufacturing and the like.

The application discloses a kind of super magnetostrictive transducer dynamic stress measurement system and method.There is power supply circuit;Super magnetostrictive transducer, the power supply circuit is connected with the super magnetostrictive transducer, the super magnetostrictive transducer includes vibrator and shell, the vibrator is arranged in the shell, and the upper end and lower end of the vibrator are connected with the shell;Measuring rod, the upper end and lower end of the vibrator are equipped with the measuring rod, and are connected with the shell by the measuring rod;First diamagnetic field strain gauge, including two first resistance strain gauges and first insulating material film, two the first resistance strain gauges are respectively test piece A and test piece B, the test piece A is bonded with the measuring rod;Dynamic strain meter, the positive electrode line and negative electrode line of the first diamagnetic field strain gauge are respectively connected with the access channel of the dynamic strain meter.Effectively measure the actual stress variation inside super magnetostrictive transducer.

The application discloses a nonlinear time domain characteristic analysis method and system of a giant magnetostrictive transducer. The method comprises a segmented magnetic circuit magnetic field model of the giant magnetostrictive transducer under the consideration of a permanent magnet bias magnetic field, a solid mechanics model of the giant magnetostrictive rod under the consideration of a magnetostrictive effect of the giant magnetostrictive rod, and a pressure acoustic model of underwater vibration of the transducer, a coupling strategy of an electromagnetic field and a solid mechanics field is constructed, and a coupling strategy of the solid mechanics field and a pressure acoustic field is constructed, so that a nonlinear time domain model of the whole electric-magnetic-mechanical-acoustic coupling of the giant magnetostrictive transducer is established, time domain output characteristics of the transducer model are analyzed under different bias magnetic fields and prestress conditions, and thus a method is provided for the design of the giant magnetostrictive electroacoustic transducer.

The invention relates to a preparation process method of a rare earth giant magnetostrictive transducer with a double-rod structure, the power capacity of the transducer obtained by the preparation process method is increased, the sound velocity is smaller, and the transducer comprises a rear cover plate, a magnetizer, a permanent magnet, a rare earth rod, a bolt, a front cover plate and a coil with specific dimensions; the preparation process method comprises the following steps: placing the rear cover plate on a press platform, and enabling the bolts to pass through the screw holes; after a magnetizer is polished, the magnetizer sequentially penetrates through related parts and is connected with the front cover plate, but bolts are not completely tightened; after prestress is applied, bolts are screwed up alternately to ensure that the stress of each part is the same, and finally the assembly of the transducer is completed. According to the preparation process method of the transducer, parameters of the magnetizer, the permanent magnet and the Terfenol-D rod are optimized, so that the output amplitude of the transducer is improved, and energy conversion can be more effectively carried out when the transducer works.

Device for operating an electromagnetic, in particular magnetostrictive, sensor or transducer (500), in particular a position measuring system (500, 505), characterized by an evaluation unit (515 - 555) for detecting mechanical shock and / or vibration conditions that may occur during operation of the sensor / transducer (500) or a vibration of the sensor / transducer (500) caused thereby by evaluating signal fluctuations in the region of a base or zero line (105) of a measurement signal provided by the sensor / transducer (500).

The utility model relates to the field of transducers, in particular to a high-power ultrasonic magnetostrictive transducer. A high-power ultrasonic magnetostrictive transducer comprises a giant magnetostrictive rare earth rod, the giant magnetostrictive rare earth rod is inserted in a special iron core, and the outer side of the special iron core is sleeved with an electromagnetic induction coil. And a pre-tightening force is applied to the giant magnetostrictive rare earth rod. Threads are arranged at the two ends of the special iron core, the two prestressed screws are connected to the two ends of the special iron core through the threads, and the two prestressed screws are pressed on the giant magnetostrictive rare earth rod to apply pretightening force to the giant magnetostrictive rare earth rod. And the special iron core is fixed in the middle of the fixed base. According to the energy converter, the size of the energy converter is reduced under the condition that the output power of the energy converter is guaranteed through a new structural form, and the output power density of the energy converter is improved. A plurality of vibration units can be connected in series, and the defects in the prior art are overcome.

The application relates to a kind of transducers, more particularly a kind of magnetostrictive transducer.It includes permanent magnet, magnetostrictive body and coil, the upper and lower sides of the permanent magnet are bonded with magnetostrictive body, coil is sleeved on the outside of permanent magnet and two magnetostrictive bodies.It also includes round sleeve and vertical column, the outside of the permanent magnet is sleeved with round sleeve, two vertical columns are arranged left and right, and the middle parts of two vertical columns are respectively fixed on the two sides of round sleeve.It also includes collar and protruding block, the collar is sleeved on the magnetostrictive body, and the two sides of the collar are respectively fixed with protruding block, and the two protruding blocks on the collar are respectively slidably connected on two vertical columns.It also includes elastic rod, each protruding block is fixed with elastic rod, and the other end of each elastic rod is respectively fixed on the end of corresponding vertical column.It can be effectively transduced through two magnetostrictive bodies.

The utility model provides an oscillator structure of a magnetostrictive transducer and an assembling device. The vibrator structure comprises a vibrator and a base structure; the base structure comprises two bases which are fixedly connected to the two sides of the vibrator respectively. The two ends, in the length direction of the bases, of the base structure are detachably provided with extrusion structures used for extruding the vibrator in the axial direction of the vibrator. The two bases located on the two sides of the vibrator are detachably connected through an extrusion structure so as to clamp the vibrator. And an exit channel of the extrusion structure is formed on the base.

The invention provides an ultrasonic-assisted compression molding device and method combining alternate vibration and mixed frequency beat vibration, and relates to the technical field of ultrasonic-assisted compression molding, the ultrasonic-assisted compression molding device comprises a compression molding mold, an ultrasonic vibration device and a driving system, and the ultrasonic vibration device is electrically connected with the driving system; the ultrasonic vibration device comprises a plurality of ultrasonic vibration assemblies arranged in the circumferential direction of the compression molding mold, and all the ultrasonic vibration assemblies are driven by the driving system to vibrate alternately in sequence; each ultrasonic vibration assembly comprises vibration units oppositely arranged on the two sides of the compression molding mold, and the two vibration units corresponding to the same ultrasonic vibration assembly are driven by the driving system to vibrate in a staggered frequency mode. The heating degree of the magnetostriction transducer can be remarkably reduced, long-time stable and efficient work is guaranteed, pulsation amplitude vibration can be formed, the damping resistance is enhanced, the vibration intensity of a mold is improved, meanwhile, vibration energy distribution is more uniform, and the forming stability is improved.

The present application relates to sludge treatment technical field, specifically to a kind of sludge resourceful treatment device for municipal engineering, including processing box, fixedly arranged fixed shell in the inside of processing box, and rotating inner container is rotationally arranged in the inside of fixed shell.The present application is continuously rotated by rotating inner container in the inside of fixed shell, cooperate with the polygonal wave-shaped reflecting surface specially provided in inner wall, make sludge continuously dynamic cross microwave wave peak and trough area in spiral falling process, the originally fixed standing wave node is scattered, microwave energy is uniformly projected to the full circumferential surface of sludge without dead angle, and heat energy utilization is greatly improved;At the same time, magnetostrictive transducer embedded in the outer wall of rotating inner container rotates synchronously with inner container, to ensure that ultrasonic energy directly acts on the core of sludge flow field that is turned over, microjet and shock wave generated by ultrasonic cavitation effect are used, and microwave thermal effect produces significant synergistic effect, and the process of sludge cell wall is accelerated.

This invention belongs to the field of magnetic variable measurement technology, specifically relating to a power-driven compensation method and system for monitoring the characteristics of magnetostrictive loads. The method includes: obtaining a reference zero point for the evolution of magnetic performance under cold conditions based on the center frequency of the electromagnetic system; calculating the current dominant frequency impedance magnitude and phase difference using an electrical parameter characterization method, and obtaining a thermal drift index reflecting the degree of hysteresis loop distortion in conjunction with the reference zero point; obtaining correction factors of various orders based on the thermal drift index and the average output power at the current moment, and dynamically updating the coefficient vector of the inverse model; constructing a pre-distortion driving voltage signal that can cancel nonlinear interference using the new coefficients and an ideal guided wave voltage sequence, and inputting it to a power amplifier to drive the magnetostrictive transducer. This invention solves the problem of pre-distortion failure in existing technologies under variable temperature conditions, significantly improving the signal-to-noise ratio of high-power, long-distance guided wave detection.

The application discloses a kind of based on SCReg-PGNN's giant magnetostrictive transducer electromagnetic energy loss optimization method, builds the magnetic energy loss test platform of giant magnetostrictive rod and carries out test to the magnetic energy loss under different working conditions, then, the electromagnetic loss of excitation coil is accurately calculated by considering skin effect, proximity effect and edge effect, finally, the electromagnetic energy loss model of high-power giant magnetostrictive transducer based on SCReg-PGNN is established, the electromagnetic loss characteristics of giant magnetostrictive transducer are calculated quickly, finally, the best electromagnetic structure parameters of high-power giant magnetostrictive transducer are searched by means of non-dominated sorting particle swarm optimization algorithm.The application can realize high-precision modeling and response prediction of transducer electromagnetic loss under multiple working conditions and multiple variable input conditions, and further realize the collaborative optimization of structure parameters under multiple objectives, so as to improve the overall energy efficiency and working reliability of transducer system.

The invention discloses a broadband impedance matching network design method based on a cuckoo catfish algorithm, and the method comprises the following steps: S1, building an equivalent circuit model of a magnetostrictive transducer, and constructing an evaluation model of a fitness function; s2, designing a four-order impedance matching network according to the magnetostrictive transducer circuit and the working frequency bandwidth of the magnetostrictive transducer circuit, and building a working circuit model of the magnetostrictive transducer after the impedance matching network is added; s3, performing optimization calculation on the selection of the impedance matching network element parameters by adopting a cuckoo catfish algorithm and taking fitness function maximization as a target function to obtain optimal element parameters; according to the method, the catfish cuckoo algorithm is utilized, global parallel search is achieved, the convergence speed is high, the problems that the bandwidth of a traditional matching network is limited, and parameters are prone to falling into single-frequency-point local optimum are effectively avoided, the average conversion power gain of the magnetostrictive transducer in the working frequency range is made to be maximum, and the efficiency of the magnetostrictive transducer is improved. And the broadband transmission efficiency of the magnetostrictive transducer system is obviously improved.