140 results about "Resonance point" patented technology

The invention belongs to the technical field of testing equipment, and particularly relates to a multipurpose high-frequency fatigue testing machine which comprises main control equipment and a fatigue testing machine body, the fatigue testing machine body comprises a bottom machine and an electromagnetic high-frequency generating machine body, and a balance weight table is assembled under the electromagnetic high-frequency generating machine body through connecting rod connection; clamp assemblies are assembled on the surface of the bottom machine and the lower surface of the counterweight table; the multiple balance weights are adjustably stacked on the surface of the balance weight table and used for being matched with the resonance points by replacing balance weights; and the plate clamp is detachably assembled with the clamp assembly and is used for detecting cracks generated in the test process of the test sample. The device can replace manpower to flexibly adjust the counterweight, realizes rapid and convenient operation, can timely detect a cracked plate in a test, and is convenient to timely stop the test before the sample is fractured.

The utility model discloses a surface acoustic wave device and a radio frequency front-end module. The surface acoustic wave device comprises an interdigital transducer, wherein the interdigital transducer comprises a first bus bar and a second bus bar which are oppositely arranged, an electrode finger and a plurality of gap electrodes; in the extending direction of the electrode fingers, an overlapping area is formed between the first bus bar and the second bus bar, a first area is formed between the overlapping area and the first bus bar, a second area is formed between the overlapping area and the second bus bar, and the first area and the second area are adjacent to the first bus bar and the second bus bar respectively; the plurality of gap electrodes are arranged in at least one of the first area and the second area, and the plurality of gap electrodes, the bus bars and the electrode fingers are arranged at intervals; wherein the plurality of gap electrodes form a first curve in the arrangement direction of the electrode fingers. According to the invention, the Q value near the anti-resonance point can be improved while the inhibition effect of the transverse mode is improved.

The invention discloses a spiral resonance photoacoustic cell and an operation method, the spiral resonance photoacoustic cell comprises a gas chamber straight tube, a spiral tube, an optical fiber collimator and an optical fiber F-P sonic sensor, the two ends of the gas chamber straight tube are open, the two ends of the spiral tube are communicated with the gas chamber straight tube, an acoustic resonance point is formed at the center of the spiral tube, and the optical fiber F-P sonic sensor is arranged in the central area of the spiral tube; and the optical fiber collimator is arranged at one end of the air chamber straight pipe. The spiral pipe is wound outside the air chamber straight pipe, the spiral pipe is communicated with the air chamber straight pipe, the structural design of the spiral pipe enables the spiral pipe to form acoustic resonance at a specific frequency, and the optical fiber F-P sonic sensor obtains a photoacoustic signal; compared with a conventional resonance photoacoustic cell, the physical volume of the resonance photoacoustic cell is greatly compressed, and the system integration level is effectively improved. More importantly, under the condition that a compact appearance similar to that of a non-resonant photoacoustic cell is kept, the device amplifies the photoacoustic signal intensity by several times through an acoustic resonance effect, and the detection sensitivity and the signal-to-noise ratio of the system are remarkably improved.

The invention discloses a capacitor loss angle determination method and device, a storage medium and computer equipment, and the method comprises the steps: carrying out the coarse frequency scanning of a measurement loop based on a logarithmic frequency step length, and determining a resonance region based on the change rate of the impedance amplitude of the measurement loop; performing fine frequency scanning on the measurement loop based on the linear frequency step length in the resonance area; determining a resonance peak based on the impedance amplitude of a frequency point in the resonance area; determining resonance attribute information of the resonance peak; selecting a reference frequency point in a preset area around the resonance peak based on the resonance attribute information; determining an initial resonance point frequency of the measurement loop, and compensating the initial resonance point frequency to obtain a resonance point frequency; determining a resonance type and a corresponding loss angle determination mode, determining initial circuit parameters, and performing error compensation on the initial circuit parameters in real time to obtain circuit parameters; and based on the circuit parameters and the resonance point frequency, determining the capacitor loss angle by using a loss angle determination mode.

The invention relates to the technical field of electronic measurement and sensing, and discloses a capacitance monitoring method and system based on a sweep frequency resonance point, and the method comprises the steps: carrying out the coarse sweeping in an initial frequency range, obtaining an impedance spectrum, and recognizing a coarse resonance interval; carrying out fine scanning in the interval and calculating an accurate resonant frequency by adopting a quadratic interpolation method; calculating a capacitance value in combination with the mapping table; and dynamically adjusting the frequency sweeping window of the next period based on the historical resonant frequency. The system comprises an excitation signal generation unit, an impedance response acquisition unit, a coarse / fine scanning control unit, a resonant frequency calculation unit, a capacitance resolving unit and a dynamic frequency window updating unit, and integrates a temperature compensation and anomaly detection mechanism. Through the two-stage frequency sweeping and self-adaptive frequency window strategy, the monitoring period is shortened to 1 / 5 or below of that of a traditional method while it is guaranteed that the resonant frequency measurement precision is superior to 0.01 Hz, and the real-time performance, stability and environmental adaptability are remarkably improved.

The invention discloses a digital system power distribution network impedance optimization method and system, and the method comprises the following steps: S1, obtaining the frequency-varying parasitic parameters Jg (f), Jr (f) and Jz (f) of a digital system power supply through a vector network analyzer, and enabling f to be a frequency variable; s2, calculating a dynamic matching coefficient DsC based on the frequency-varying parasitic parameter, and calling a PDN decoupling scheme set from a decoupling scheme database according to a DsC matching interval; s3, inputting the PDN decoupling scheme set into ADS software for segmented variable step size impedance simulation, wherein the step size of the frequency band from 1 MHz to 100 MHz is 0.5 MHz, and the step size of the frequency band from 100 MHz to 3 GHz is 5 MHz; and generating a surface-mounted PCB decoupling index DI containing a resonance penalty term and a micro-system substrate decoupling index WI. According to the method, the high-frequency resonance suppression capability is improved, frequency change parasitic parameter extraction is combined with resonance point penalty term design, impedance peak fluctuation is compressed to be within + / -8% of a target value in a 1-3GHz frequency band, and actually measured power supply noise of a 10Gbps SerDes interface is reduced by 62%.

The invention provides a resonance control method for an excimer lamp driven by a steep pulse edge, and relates to the technical field of molecular lamps. The resonance control method of the excimer lamp driven by the steep pulse edge comprises the following steps: S1, based on a dielectric barrier discharge equivalent circuit model, adopting a fast Fourier transform spectrum analysis method, measuring fundamental wave impedance characteristics of an LC resonance network through an impedance analyzer, establishing a transfer function containing parasitic parameters: Z (s) = [sLr + 1 / (sCr)] Rarc, and generating an initial resonance parameter set; by establishing a transfer function model containing parasitic parameters, combining fast Fourier transform spectrum analysis and accurately extracting fundamental wave impedance characteristics, the problem of resonance point offset caused by neglecting the parasitic parameters in a traditional method is solved, the precision of an initial resonance parameter set is improved, real-time phase difference data are identified on line by using a recursive least square method, and the real-time phase difference is obtained. Resonant frequency changes are dynamically tracked, frequency drift errors are compensated, resonance point tracking precision is controlled within + / -0.1%, and invalid discharge energy loss is remarkably reduced.

A plastic integrated three-dimensional broadband dual-polarized antenna unit comprises a plastic substrate, a radiator and a feed structure, the radiator comprises a main radiator and a coupling resonator, the main radiator comprises four radiation arms, the four radiation arms and the plastic substrate form a first angle to form a three-dimensional structure body, and the coupling resonator is arranged on the plastic substrate. The first angle is larger than 0 degree and smaller than 90 degrees, the coupled resonator is arranged above the main radiator, and the main radiator is electrically connected with the feed structure; the coupled resonator and the main radiator are coupled to generate a first resonance point, and two radiation arms, located on a diagonal line, in the four radiation arms are combined to form two pairs of radiation arms and feed through corresponding feed structures to respectively generate a first polarization direction radiation signal and a second polarization direction radiation signal which are orthogonal to each other. Radiation signals generated by the two pairs of radiation arms correspond to a second resonance point, and a third resonance point is generated between the two pairs of radiation arms through coupling.

The invention belongs to the technical field of cable insulation material aging detection, and relates to a cable aging degree judgment method based on an impedance spectrum and a related device. The method comprises the steps of obtaining a reflection coefficient curve based on an impedance spectrum curve; obtaining a reflection coefficient real part curve based on the reflection coefficient curve, and extracting a resonant frequency corresponding to a resonant point of the reflection coefficient real part curve; calculating a relative dielectric constant real part of an insulating medium of the cable to be measured under different resonant frequencies; outputting an attenuation constant curve based on the reflection coefficient curve and a cable reflection coefficient amplitude calculation model; extracting a plurality of attenuation constant values of the attenuation constant curve on the resonant frequency; substituting the attenuation constant value and the relative dielectric constant real part into a dielectric loss angle tangent value calculation model to obtain a dielectric loss angle tangent value of the to-be-measured cable under the resonant frequency; and carrying out aging degree judgment based on the dielectric loss angle tangent value. The problem that an existing method is long in time consumption or cannot acquire full-band dielectric information of a cable insulating material is solved.

The invention discloses a multi-frequency resonance point absorption type sea wave energy conversion device and a control method. The device comprises a fixed base, a sea wave energy absorption mechanism, an energy conversion mechanism, a variable stiffness mechanism and a power generation mechanism. An energy conversion mechanism, a variable stiffness mechanism and a power generation mechanism are mounted in the fixed base, and the variable stiffness mechanism and the power generation mechanism are connected with the energy conversion mechanism; one end of the sea wave energy absorption mechanism is arranged in the fixed base in a penetrating mode, and the end, arranged in the fixed base in a penetrating mode, of the sea wave energy absorption mechanism is connected with the energy conversion mechanism. According to the point absorption type sea wave energy conversion device, a new thought for improving the energy capture efficiency is provided, the spring force output by the spring is adjusted through the variable stiffness mechanism, and the stiffness of the whole sea wave energy capture device is changed through real-time adjustment of the spring force; therefore, the floater can be matched with the dominant frequency of the sea waves in a certain frequency band to generate resonance, and the capturing efficiency of the sea wave energy is further improved.

The invention relates to the technical field of impedance measurement, in particular to an impedance measurement method and system for a common-mode inductor, and the method comprises the steps: obtaining voltage and current signals of the common-mode inductor in a test circuit, and obtaining frequency domain response atlas data containing impedance characteristics through time-frequency transformation; carrying out non-linear segmentation division on the frequency axis to form a plurality of frequency segmentation regions; extracting the phase amplitude of each segmented region, carrying out clustering segmentation, and recognizing an effective impedance frequency band; analyzing phase synchronization characteristics in the effective impedance section, and determining a common-mode resonant frequency point through clustering analysis; and fusing multi-section frequency region division, effective impedance section and resonance point information to finish accurate measurement of the impedance characteristic of the common-mode inductor. According to the method, through non-linear scanning and phase information joint analysis, the recognition precision of impedance response key characteristics in a broadband range is improved, the capturing capacity of parasitic parameters and resonance behaviors is enhanced, and efficient and high-precision comprehensive evaluation of the impedance characteristics of the common-mode inductor is achieved.

The embodiment of the invention provides a harmonic control method and device of an electric power system and a storage medium, the electric power system comprises a converter for converting direct current into alternating current, and the method comprises the following steps: determining a frequency range of a resonance point of the electric power system; under the condition that the switching frequency of the converter falls into the frequency range, determining a target resonant frequency of the resonant point; determining the type and electrical parameters of a nonlinear device needing to be added by taking the target resonant frequency as an optimization target; and setting the non-linear device in the power system. According to the method, a relatively serious resonance point in a power system is identified, and the vibration frequency of the resonance point of the power system is changed in a mode of increasing a nonlinear device, so that the frequency point of an original resonance source in a circuit is avoided, and the harmonic problem in a specific scene is solved in a low-cost mode; and long-term stable operation of a power system can be ensured.

The invention discloses a power divider, which is applied to the technical field of radio frequency communication, and comprises an input end, a first output end and a second output end, a plurality of first impedance conversion modules are connected in series between the input end and the first output end; a plurality of second impedance conversion modules are connected in series between the input end and the second output end; wherein the ith first impedance conversion module is the same as the ith second impedance conversion module; an isolation module is connected in parallel between each first impedance conversion module and each second impedance conversion module; the isolation module comprises at least one capacitor and at least two resistors which are connected in series in a symmetrical state, or at least one resistor and at least two capacitors which are connected in series in a symmetrical state. According to the power divider, more resonance points can be introduced in frequency response through the isolation module, so that the isolation degree of the power divider is improved.

The application relates to a vibration error distribution and suppression method of an airborne suspension type light beam pointing mechanism, and belongs to the technical field of photoelectric detection. The method steps comprise the following: determining a shear frequency range of a servo system; judging whether the light beam pointing mechanism meets the requirements by adopting wide-frequency vibration excitation; recording frequency points of resonance and amplification rates corresponding to the resonance points by adopting wide-frequency vibration excitation; obtaining light axis jitter amounts generated by each frequency point of resonance by adopting fixed-frequency vibration excitation, and sorting the light axis jitter amounts according to the sizes of the light axis jitter amounts; placing the servo system in an open loop state, exciting the light beam pointing mechanism again, obtaining light axis jitter amounts generated by each frequency point of resonance, and sorting the light axis jitter amounts according to the sizes of the light axis jitter amounts; comparing the differences between the light axis jitter amounts obtained twice, judging the reasons for the light axis jitter, and compensating the vibration error of the light beam pointing mechanism. The application effectively improves the precision of the suspension type light beam pointing mechanism and improves the detection capability of photoelectric products.

The present application provides a plasma processing device capable of controlling the position of a resonance point and bringing the resonance point close to the output end of a coil antenna. The device comprises an ICP antenna (21) having an input end (21I) and an output end (21O); a series circuit formed by connecting an additional inductor (24) and a variable capacitor (25) in series; and a control device (33) for changing the capacitance of the variable capacitor (25). The input end (21I) is connected to an antenna power source (23) via an antenna matching device (22), the output end (21O) is connected to the additional inductor (24), and the additional inductor (24) is connected to a ground end via the variable capacitor (25).

The invention discloses a sound production unit and head-mounted sound production equipment, and relates to the technical field of sound production devices, the sound production unit is in contact with human face skin when worn, and the sound production unit comprises a bone conduction sound production device and an air conduction sound production device which are independently arranged; the bone conduction sound production device and the air conduction sound production device can be independently controlled to produce sound, and the minimum value of the difference value between the working frequency band of the bone conduction sound production device and the low-frequency resonance point of the bone conduction sound production device is larger than or equal to 20 Hz. The sound production unit can utilize respective sound production characteristics of the bone conduction sound production device and the air conduction sound production device, so that the sound listening effect is improved, relatively strong vibration generated by vibration near a low-frequency resonance point of the bone conduction sound production device is reduced, and the use experience is improved.

According to the magnetoelectric dipole antenna, the coaxial feed communication bandwidth is larger than 100%, and the technical problems that broadband impedance matching and high-frequency mismatching are achieved, and the stability of a feed structure is poor are solved. According to the antenna, a meandering seam bending type electric dipole and a stepped flaring type magnetic dipole are cooperatively matched, and a feed structure and a U-shaped reflector are combined to integrally form the magnetoelectric dipole antenna. A meandering seam is etched on a horizontal rectangular patch, a vertical patch is welded on the outer side of the horizontal rectangular patch to form a three-dimensional radiator, and the three-dimensional radiator and a stepped flaring type cavity structure magnetic dipole form a closed structure. The feed structure comprises a coaxial line and two bent copper sheets, thereby realizing direct current grounding and providing mechanical reinforcement. 3.7 GHz and 4.2 GHz resonance points are introduced to realize 104.8% of relative bandwidth, while the compact structure is maintained, the broadband coverage and stable radiation characteristics are realized, the long-term reliability in an outdoor complex environment is ensured by a stable feed structure, part of 5G communication signals in a Sub-6G frequency band can be effectively covered, and the antenna is suitable for various wireless communication systems.

The invention discloses an elastic wave device and a radio frequency front-end module, and the elastic wave device is characterized in that a base end widening part is arranged on an electrode finger, and the projection of the base end widening part and the projection of the free end of an adjacent electrode finger in the extension direction of the electrode finger are at least partially overlapped, or a bus bar is subjected to opening processing, and an opening is rectangular; the non-opened part is at least partially overlapped with the projection of the free end of the electrode finger in the extending direction of the electrode finger, so that the suppression effect of a transverse mode can be improved, the suppression effect of a gap mode is improved, meanwhile, a miscellaneous mode on the left side of a resonance point of the elastic wave device can be suppressed, the Q value of the elastic wave device is further improved, and the reliability of the elastic wave device is improved. And the working performance of the elastic wave device is improved.

The application discloses a kind of transceiving matching network and radio frequency front-end circuit, chip, the transceiving matching network includes: the output matching network of transmission end, the coupled resonant switch network of receiving end and first transmission line are connected in turn;The output matching network of transmission end is used for transmission end impedance matching and provides first resonance point in receiving mode;The coupled resonant switch network of receiving end is used for receiving end impedance matching, switches transceiving mode;The first transmission line is used to provide second resonance point in receiving mode.The application embodiment effectively improves the linear output power and efficiency of front end transmission by removing the switch of transmission branch, while using coupled resonant switch structure in receiving branch to ensure that receiving has wideband, low insertion loss characteristics, and comprehensively improves the radio frequency transceiving performance of radio frequency front end.The application embodiment can be widely applied in the field of wireless communication technology.

The present disclosure provides an antenna, a wireless signal processing device, and an unmanned aerial vehicle. The antenna includes: a substrate having a first surface and a second surface opposite the first surface; a first radiator and a second radiator disposed on the first surface, the first radiator and the second radiator facing opposite each other, the first radiator being located at one end near a head of the substrate, and the second radiator being located at one end near a root of the substrate; a third radiator disposed on the second surface, the third radiator being mirror symmetric with a portion of a structure of the first radiator and conducting with the second radiator, so that the first radiator, the second radiator and the third radiator form a coupled resonance point; and a feed line connected with the first radiator, the second radiator and the third radiator.

The utility model relates to a sound pickup technology for an acoustic musical instrument, in particular to an array type sound pickup for the acoustic musical instrument, which comprises an integral array type sound pickup set consisting of a plurality of single sound pickups with different sizes. The single sound pick-up is formed by arranging a piezoelectric ceramic piece in an open type stamping aluminum alloy cavity shell, and the surface of the piezoelectric ceramic piece is covered with 0.3-0.5 mm silicone rubber for sealing. The sound pick-up is installed on a frequency resonance point of a sound production panel in the original sound musical instrument through a flexible double faced adhesive tape. The sound pick-up frequency range and the signal intensity can be expanded in the physical level by combining sound pick-ups with different sizes. The sound pickup device picks up the sound of the acoustic musical instrument with high quality, and provides a high-quality acoustic solution for the acoustic musical instrument in the fields of stage performance, studio recording and the like.

The present invention relates to a front and rear torque distribution control device for a four-wheel drive vehicle, which improves the degree of freedom of selection of a front and rear wheel torque distribution ratio to maintain the driving performance of the four-wheel drive vehicle as good as possible. Rotor shafts of front and rear drive motors are rotatably supported by rolling bearings, and a resonance region, which is a predetermined bandwidth including a resonance point determined by the rigidity of the rolling bearings, of a drive system including the rolling bearings varies in accordance with the torque of the rotor shafts. A controller for controlling a drive torque borne by a drive motor for front wheels and a drive torque borne by a drive motor for rear wheels among drive torques required for traveling of a four-wheel drive vehicle is provided with a drive torque setting unit. The drive torque setting unit sets the drive torque generated by the drive motor for the front wheel and the drive motor for the rear wheel at a predetermined vehicle speed to a torque that has a resonance region in a vibration band deviating from the vibration band at the predetermined vehicle speed and that satisfies the torque required for the vehicle to travel.

The embodiment of the invention discloses a surface acoustic wave resonator, a surface acoustic wave filter and a multiplexer. The surface acoustic wave resonator includes: a piezoelectric layer; a conductive layer; the conductive layer comprises a first conductive unit and a second conductive unit; the first conductive unit comprises an interdigital transducer electrode, and a first bus bar and a second bus bar which are arranged at two ends of the interdigital transducer electrode; the interdigital transducer electrode comprises a plurality of first long electrode fingers and a plurality of second long electrode fingers which are alternately arranged in the first direction and extend in the second direction. Wherein in the second direction, at least one pair of adjacent first long electrode fingers are in short circuit on the side away from the first bus bar, and the second long electrode finger located between the two short-circuit first long electrode fingers is arranged in a suspended mode to form a suspended finger. The second conductive unit comprises a first reflecting grating and a second reflecting grating. According to the technical scheme, the distance between the resonance point and the anti-resonance point of the resonance unit can be shortened. The surface acoustic wave resonator is applied to a surface acoustic wave filter and can improve pass band edge roll-off.

The application provides a design method of an additional damping ring of an aero thin-webbed gear. The design method comprises the steps of determining initial parameters, obtaining an energy dissipation model of the gear after the additional damping ring, checking the initial parameters and adjusting the design parameters. The method can be used to determine the energy dissipation parameters of the damping ring corresponding to the actual amplitude and frequency of the thin-webbed gear with different numbers of pitch diameters and harmful resonance points, and then determine the contact pressure. By comparing whether the system amplitude ratio and the gear measuring point stress ratio meet the conditions, the damping performance of the damping ring can be effectively improved.

The embodiment of the present application provides a kind of modulation method, device and electronic equipment of pulse width modulation carrier, by obtaining the resonant frequency of frequency converter, resonant frequency is the frequency corresponding to the resonance point when producing resonance in the use process of frequency converter;According to the target carrier period of resonant frequency determination;Control the motor current output in target carrier period, so that the pulse width modulation carrier obtained in target carrier period is sine wave.The technical scheme provided by the embodiment of the present application modulates the motor current output according to the resonant frequency of frequency converter, so that the pulse width modulation carrier obtained in target carrier period is sine wave, can effectively eliminate the noise generated by the resonance of pulse width modulation carrier and other structural parts, reduce the influence of noise on motor control.

The invention discloses a turbomachinery blade resonance interval identification method, device and equipment and a storage medium, and relates to the technical field of blade resonance identification. The method comprises the following steps: acquiring a blade tip pulse signal of the turbomachinery; the blade tip pulse signals are preprocessed, and target blade vibration displacement is calculated according to the preprocessed blade tip pulse signals; performing segmented time-frequency analysis on the vibration displacement of the target blade based on self-adaptive ultra-wavelet transform to obtain a two-dimensional relationship between aliasing frequency and rotation frequency; based on an undersampling principle, a resonance interval is identified according to a two-dimensional relationship between aliasing frequency and rotation frequency. Thus, the blade tip pulse signals are preprocessed, target vibration displacement is obtained after clean blade tip pulse signals are obtained, time-frequency analysis is carried out on the pulse signals through self-adaptive ultra-wavelet transform, and the vibration amplitude and frequency are accurately recognized in a scene with weak resonance characteristics and strong noise in combination with the undersampling principle. Resonance points prone to missing measurement in a traditional blade tip vibration monitoring method are captured.

The invention relates to the technical field of wireless, and provides a cavity-backed circularly polarized antenna. The cavity-backed circularly polarized antenna comprises a resonant cavity, the top layer of the resonant cavity is etched with a radiation structure, and the radiation structure is used for generating an inherent circularly polarized resonance point; at least one resonant structure is arranged in the resonant cavity, the at least one resonant structure is used for generating an additional circularly polarized resonant point, and the at least one resonant structure is electromagnetically coupled with the radiation structure, so that the inherent circularly polarized resonant point and the additional circularly polarized resonant point interact to widen the circularly polarized bandwidth. According to the invention, the axial ratio bandwidth is effectively expanded so as to meet the requirements of a modern broadband communication system.

The application relates to the technical field of ultrasonic waves, in particular to an ultrasonic generator based on frequency real-time scanning tracking and a working method thereof. The application provides the ultrasonic generator based on frequency real-time scanning tracking and the working method thereof, when a cutting (grinding) load changes, the ultrasonic generator simultaneously scans the frequency and adjusts the air gap length to obtain an optimal resonance point. Through the method, slight deformation or displacement caused by factors such as temperature, humidity and mechanical vibration can be automatically offset, stable work is maintained, and the environmental adaptability is enhanced. The application aims at solving the technical problems of greater loss and greater heat of an ultrasonic transducer in the prior art.

The invention provides an ultrasonic generator control method, an ultrasonic generator, a storage medium and a computer, when the ultrasonic generator meets a constant power mode switching condition, a second output target is obtained according to a preset rule, the output state is adjusted according to the second output target, and when the output power of a power supply is limited, the output state is adjusted. The output state is adaptively adjusted according to the resonance state trace offset characteristic caused by the actual load characteristic, the offset resonance point is tracked based on the traceable parameter, the output efficiency is increased, and the active power is improved. By dynamically adjusting the output target, the output state can be adjusted along with the change of the load, the reduction degree of the output efficiency caused by micro offset of a resonance point due to loading is reduced, the reduction degree of the active power due to the influence of the load is reduced, the cutting effect of the ultrasonic scalpel is guaranteed, and the operation effect is improved.

The present invention relates to a method for calculating at least one thermal characteristic of an electrical system based on an evaluation of the resonance points of the electrical system, and further to a computer program for carrying out such a method, and to a measurement system comprising at least one control unit designed to carry out the method.