13results about How to "Increase amplitude" patented technology

The invention belongs to the technical field of well drilling equipment, and discloses a thick-wall windowing milling cone which is used for windowing operation of old well casings. The thick-wall windowing milling cone is configured to extend into the casing pipe and windowing the side wall of the casing pipe. The thick-wall windowing milling cone comprises a connector, a drill bit and an eccentric drill bit. Wherein one end of the joint is connected to the driving mechanism; the drill bit is fixedly connected to the end, away from the driving mechanism, of the connector and is configured to cut and mill the side wall of the sleeve. The eccentric bit is eccentrically arranged on the outer end face of the body bit away from the connector. The eccentric drill bit is matched with the main drill bit, and after the eccentric drill bit breaks through the sleeve, due to the eccentric arrangement of the eccentric drill bit relative to the main drill bit, the amplitude of the main drill bit can be improved under the action of rotation and self gravity, so that the impact force of the main drill bit is indirectly improved, and the main drill bit can finish window opening operation more quickly.

The utility model discloses a test current generating device of a converter grid-connected cabinet, and relates to the technical field of power electronics. The test current generating device of the converter grid-connected cabinet comprises an alternating current source and a transformer, wherein the input end of the alternating current source is configured as the input end of the test current generating device, and the output end of the alternating current source is connected with the primary winding of the transformer; a secondary winding of the transformer is configured as an output end of the test current generating device and is connected with a machine side of the converter grid-connected cabinet; the number of turns of the primary winding is N times that of the secondary winding, so that the voltage output by the alternating current source can be reduced to 1 / N through the transformer; due to energy conservation, under the condition that loss is ignored, the current output by the alternating current source can be expanded to N times through the transformer and then serves as the test current, namely, the amplitude of the test current received by the converter grid-connected cabinet can be improved, and then the large-current test requirement exceeding the set capacity of the alternating current source can be met.

The present application relates to the technical field of gas leakage detection, in particular to a photoacoustic spectroscopy trace detection method for gas path system leakage and related device. The photoacoustic spectroscopy trace detection method for gas path system leakage comprises the following steps: emitting specific wavelength laser with double-frequency intensity modulation to the suspected leakage area of the gas path system, the specific wavelength matches two adjacent absorption spectral lines of the target leakage gas, and the frequency difference of the double-frequency intensity modulation corresponds to the frequency interval of the two adjacent absorption spectral lines, so that the leakage gas molecules absorb laser energy of two frequencies at the same time to enhance the amplitude of the periodic photoacoustic signal. Through the cooperation of multiple technical links, the present application effectively solves the problems of weak trace signal, difficult noise suppression and low positioning accuracy in the existing method, and realizes the unification of high-sensitivity trace detection and centimeter-level accurate positioning for gas path system leakage.

This invention discloses a DAC output error correction method based on digital compensation, comprising: collecting amplitude deviation, phase shift, and timing jitter data of the DAC output signal through a quantum sensing DAC calibration and analysis platform to construct a multi-dimensional original error dataset; calling an operational amplifier offset dynamic coupling prediction model to analyze the coupling relationship and extract dynamic correlation features; separating harmonic components and screening error contribution factors based on a broadband DAC harmonic distortion correction model; calculating the gradient change law and extreme point position using a differential nonlinear gradient correction model; integrating the above features and parameters to construct a digital compensation parameter matrix, and dynamically adjusting the output code value through real-time digital modulation to achieve error correction. This method, through multi-model collaborative operation and full-process closed-loop processing, accurately captures the dynamic correlation and distribution characteristics of multi-source errors, achieves synchronous correction of multi-dimensional errors, and improves DAC output accuracy and operating condition adaptability.

The utility model discloses a soybean curing device, which belongs to the technical field of soybean processing, and comprises a screening barrel, a cleaning barrel, a crushing barrel and a curing barrel, a screen mesh is arranged in the screening barrel, a vibration structure is arranged below the screen mesh, and the vibration structure drives the screen mesh to vibrate, so that materials on the screen mesh continuously jump; the cleaning barrel is located on one side of the screening barrel and used for washing the surfaces of the soybeans and removing dust and impurities on the surfaces; the crushing barrel is positioned on one side of the cleaning barrel and is used for crushing the cleaned soybeans; the curing barrel is positioned on one side of the crushing barrel and is used for carrying out heat treatment on the soybeans. The vibration structure is arranged in the screening barrel to be matched with the screen, so that the screen generates stable and continuous vibration, impurities such as soil, stones and shriveled grains are effectively separated through the difference of soybeans and stones in shape, size and density, and high-quality soybean raw materials which are full in grains and free of mildew are accurately screened out.

The utility model discloses a variable vibration litchi picking device, include: delta parallel mechanism is used for the mobile positioning of litchi picking, variable vibration output mechanism is used for the vibration collection of litchi picking, visual sensor is used for gathering litchi fruit cluster information, control box is used for processing fruit cluster coordinate information and sends control information, wherein, variable vibration output mechanism and visual sensor are installed respectively on the dynamic platform of delta parallel mechanism, and the control box is connected on the fixed platform of delta parallel mechanism, the utility model discloses simple and reliable structure design, convenient to use, and picking positioning is accurate and efficient, and litchi vibration picking efficiency is improved greatly, especially suitable for the vibration collection operation of litchi orchard, and is installed in the field mobile platform, and single operation can realize the vibration collection of most litchi in 1500*2000*200mm range.

The application provides a voltage transformer real-time diagnosis method based on a Hongmeng system, and relates to the field of data processing. In the method, an original sampling sequence is acquired at a Hongmeng system edge computing node and an adaptive sliding window is constructed, a phase reference signal is extracted based on a standard voltage transformer secondary voltage sampling sequence and a power grid actual operating frequency is dynamically estimated, and a variable-length sampling window is generated; under the window, a windowed interpolation spectrum analysis process is performed to obtain a fundamental wave phasor estimation result, a ratio difference result and an angle difference result are calculated, test working condition information is combined to form an error characteristic data record, an error anomaly diagnosis result is obtained through error characteristic knowledge graph and graph neural network reasoning, and a differential processing strategy is executed to complete real-time diagnosis. By implementing the technical solution provided in the application, real-time diagnosis of error sources can be realized while ensuring the calculation accuracy of the ratio difference result and the angle difference result.

The utility model relates to the technical field of medical apparatus and instruments, especially to a compound motion's ultrasonic osteotome and ultrasonic operating handle, including sword stem and the sword head connected in sword stem front end, the sword stem includes the handle section and transition section gradually from back to front, and the transition section includes amplitude section and the extension section connected in amplitude section front end, the sword stem and the sword head form the suction passage of axis extension, the suction passage can be used for connecting negative pressure equipment to enable the front end of sword head to attract medium, the extension section is evenly opened with a plurality of twist grooves on the circumference, the extension direction of twist groove is consistent with the included angle of extension section axis after the outer wall of extension section is unfolded, and its beneficial effect is that under the action of twist groove, the sword stem not only can reciprocate axially after being connected with ultrasonic transducer, but also can twist axially, and further, the cutting efficiency is greatly improved. Through setting the angle as the consistent form, the twist balance and twist amplitude can be optimized, and further, the cutting effect of the ultrasonic osteotome is further improved.

The application discloses a Fourier photo-thermal gas detection device and method, and belongs to the technical field of gas detection. In view of the problems of narrow spectral response range, low power tolerance and the need for refrigeration of a light detector in an existing Fourier transform spectrum, a Fourier photo-thermal gas detection device is designed, a thermal light source is used as an excitation light source of absorption effect, the thermal light source is subjected to unified intensity modulation of wide spectrum light through an intensity modulation assembly and phase modulation through an interferometer assembly; the broadband light emitted after being subjected to double modulation is partially absorbed after acting on gas molecules, a quartz tuning fork light detector assembly effectively collects transmitted light, extracts resonance components in the transmitted light and converts the resonance components into electrical signals; the generated electrical signals are sequentially subjected to processing through a signal amplification assembly, a phase-sensitive demodulation assembly and a Fourier transform assembly, and composition discrimination and concentration inversion of a target gas are realized through the processed signals.

The application provides a magnetic suspension rotor fundamental frequency vibration signal real-time monitoring method and system, and belongs to the technical field of magnetic suspension bearings; the method comprises the following steps: collecting an original displacement signal; using an adaptive wave trap to pre-process the displacement signal; selecting an initial voltage signal according to the real-time rotating speed frequency of the magnetic suspension rotor V c , and inputting the pre-processed displacement signal into a phase-locked loop unit; the phase-locked loop unit is used for tracking the fundamental frequency component in the displacement signal which is synchronous with the rotating speed, and outputs an instantaneous frequency value and an instantaneous phase value which are synchronous with the fundamental frequency component, and two reference signals; a synchronous demodulator is configured, and based on the instantaneous frequency value, the instantaneous phase value, the two reference signals and the original displacement signal output by the phase-locked loop unit, the real-time amplitude of the fundamental frequency vibration component is extracted; and a rotor unbalanced vibration state vector including the real-time amplitude of the fundamental frequency vibration component, the real-time instantaneous phase value and the real-time instantaneous frequency value is output.

This invention discloses a torsional vibration ultrasonic honing device, comprising: a mounting base, a honing stone mechanism, a mandrel, a drive mechanism, an amplitude transformer, and a piezoelectric transducer. The honing stone mechanism is mounted on the mounting base, the mandrel passes through the mounting base and is connected to the honing stone mechanism, and the drive mechanism is connected to the mandrel. The drive mechanism drives the honing stone mechanism to reciprocate along the radial direction of the mounting base via the mandrel. The input end of the amplitude transformer is connected to the piezoelectric transducer, and the output end of the amplitude transformer is connected to the honing stone mechanism. This invention, through a one-to-one correspondence between the amplitude transformer, the piezoelectric transducer, and the honing stone mechanism, employs direct-drive ultrasonic torsional vibration. Compared to ultrasonic honing devices using a single piezoelectric transducer and ultrasonic honing devices with built-in piezoelectric transducers using longitudinal vibration, this torsional vibration method significantly reduces ultrasonic energy loss and greatly increases the amplitude of the honing stone, thereby improving the honing efficiency and processing quality of the workpiece.