10 results about "Interference factor" patented technology

The invention discloses an operation control method for a wind power generation system, and relates to the technical field of operation control, and the method comprises the steps: obtaining the historical operation data of a wind power generation system in a target sea area, taking an offshore environment factor as an interference factor, and coupling the time-space parameters of ocean turbulence intensity, wave load and salt spray corrosion rate; establishing a fan-marine environment digital twinborn body; operation data is acquired in real time, synchronous mapping and dynamic updating of the digital twin are realized, and a state prediction model is established in combination with historical operation characteristics; taking the maximum power generation efficiency and the minimum mechanical load as a multi-objective optimization function, and introducing a model prediction controller to obtain an optimal control sequence of the wind power generation system in a future time domain of each control period; and selecting a first control instruction in the optimal control sequence, issuing the first control instruction to a physical fan torque controller and a variable pitch system in real time, realizing rolling optimization of the wind power generation system, and obtaining a self-adaptive operation control scheme of the wind power generation system. The power generation benefit of the whole life cycle is improved.

The invention discloses an optical receiving end bandwidth testing method and system and related equipment, which are characterized in that firstly, rough scanning is carried out by using a first sweep frequency step, an amplitude-frequency response area is divided, then a smaller second sweep frequency step is determined according to the attenuation slope of a transition core area, and differential sampling is adopted in different areas, so that frequency point redundancy is effectively reduced, the testing time is shortened, and the testing efficiency is improved. And meanwhile, amplitude-frequency rapid attenuation characteristics are accurately captured, test efficiency and precision are considered, and batch test requirements of a production line are met. The sampling duration and the Fourier transform average times are adjusted by combining the real-time signal-to-noise ratio, so that the influence of various interference factors can be inhibited; through peaking detection and roll-off characteristic judgment, a proper low-pass model is matched for global fitting, sampling random errors can be eliminated, a standard amplitude-frequency response curve fits actual characteristics, and the stability and repeatability of bandwidth judgment are improved. According to the method, through organic combination of adaptive non-uniform frequency sweeping and model fitting, precise, efficient and stable testing of the bandwidth of the optical receiving end is realized, and the testing performance is improved.

The application discloses an optical receiving end bandwidth test method, system and related equipment, which first performs coarse scanning by a first sweep frequency step and divides the amplitude-frequency response area, then determines a smaller second sweep frequency step according to the transition core area attenuation slope, adopts differential sampling in different areas, effectively reduces frequency point redundancy, shortens test time consumption, accurately captures the amplitude-frequency rapid attenuation characteristics, balances test efficiency and accuracy, and adapts to production line batch test requirements. By combining real-time signal-to-noise ratio adjustment sampling time and Fourier transform average number, the influence of various interference factors can be inhibited; by peak detection, roll-off characteristic determination, matching of a suitable low-pass model for global fitting, random sampling errors can be eliminated, the standard amplitude-frequency response curve can be fitted to the actual characteristics, and the stability and repeatability of bandwidth determination are improved. The method realizes accurate, efficient and stable test of the optical receiving end bandwidth through the organic combination of adaptive non-uniform sweep frequency and model fitting, and improves the test performance.

The application relates to a light anti-turbulence method and system based on an MPLC and a dynamic super surface. A light beam is first transmitted to a dynamic super surface, phase and amplitude modulation is realized through the dynamic super surface, then the light beam is transmitted to an MPLC structure, wavefront and field optimization modulation is realized through the MPLC structure, the modulated light signal is input to a receiving module, in the transmission process of the light beam, turbulence wavefront distortion data, vibration displacement data and light intensity fluctuation data are collected in real time, and a comprehensive interference factor is calculated, the compensation phase of the dynamic super surface and the modulation phase of the MPLC structure are calculated according to the total phase modulation instruction, and finally the total phase modulation instruction is generated, and the dynamic super surface and the MPLC structure are respectively optimized according to the total phase modulation instruction. The application realizes synchronous suppression of the coupling interference of turbulence, vibration and light intensity flicker, can be dynamically adjusted according to the change of the environment, and is suitable for different turbulence environments.

The application discloses a kind of geological radar forecast waveform chart index quantization analysis methods based on pixel identification, comprising the following steps: S1, cutting geological radar advance geological forecast waveform chart;S2, point by point index each pixel point RGB value of cutting after waveform chart, calculate the RGB sum of each pixel point, segmented statistics each pixel point RGB sum distribution;S3, determine RGB gain threshold, and the pixel point of RGB sum less than or equal to RGB gain threshold is carried out target color gain;S4, determine the coordinate of each channel of waveform chart;S5, calculate the amplitude value of each wave crest, frequency;S6, according to preset in-phase axis continuity rate, calculate the continuity of each wave crest of each channel;S7, to waveform chart partition, calculate waveform chart energy attenuation rate.The present application carries out cutting, gain and other pretreatment to geological radar forecast waveform chart using pixel identification method, eliminates interference factor, and it is convenient for index quantization analysis.The quantization result of the index of radar forecast waveform chart is automatically calculated.

The invention discloses an anti-cross interference gas detection method based on acousto-optic and electrochemical dual mechanisms, and relates to the technical field of anti-interference gas detection, and the method comprises the following steps: constructing a strong interference factor comparison table, and recording strong interference factors of target gas; the method comprises the following steps: detecting target gas through electrochemical detection, acoustic surface wave detection and photoacoustic spectrum detection, and judging whether a detection result is interfered or not; building an anti-interference calibration model, and carrying out joint calibration on a detection result; if the detection result is interfered, giving credibility to electrochemical detection, surface acoustic wave detection and photoacoustic spectrum detection by referring to a strong interference factor comparison table, and performing joint calibration on the detection result by combining an anti-interference calibration model; the method is used for solving the problems that an existing anti-interference gas detection technology is high in use limitation, and anti-interference detection cannot be achieved in part of detection environments.

The invention relates to the technical field of ultrasonic flow measurement, and discloses a correction method for sound velocity detection of an ultrasonic flowmeter, which comprises the following steps of: transmitting a first sound wave and measuring the transmission time of the first sound wave on a propagation path of the first sound wave; transmitting a second sound wave and measuring the transmission time of the second sound wave on the propagation path; obtaining an included angle phi between the flowing direction of pipeline fluid and the flow sound channel; calculating the flow velocity of the pipeline fluid through a national standard calculation formula; the sound velocity of the ultrasonic sensor under the pipeline fluid condition is calculated through an empirical formula; and performing measurement precision evaluation on the ultrasonic sensor. The interference factor of the propagation speed of the ultrasonic waves in the gas by the fluid flow velocity is taken into consideration in the calculation method, the sound velocity detection error of the ultrasonic flowmeter is reduced, and the method has remarkable economic benefits.

The invention relates to a light anti-turbulence method and system based on an MPLC and a dynamic metasurface. A light beam is firstly transmitted to the dynamic metasurface, and phase and amplitude modulation is realized through the dynamic metasurface; and then transmitting to the MPLC structure, and realizing optimized modulation of the wavefront and the field of view through the MPLC structure. The modulated optical signal is input to the receiving module; in the light beam transmission process, turbulent wavefront distortion data, vibration displacement data and light intensity fluctuation data are collected in real time, and a comprehensive interference factor is calculated; finally generating a total phase modulation instruction according to the compensation phase of the dynamic metasurface and the modulation phase of the MPLC structure; and respectively performing optimization modulation on the dynamic metasurface and the MPLC structure according to the total phase modulation instruction. According to the invention, synchronous suppression of coupling interference of turbulence, vibration and light intensity flicker is realized, dynamic adjustment can be carried out according to environment changes, and different turbulence environments can be adapted.

The invention belongs to the technical field of steel plate intelligent detection, and discloses a steel plate wave shape detection system and method based on deep learning. In order to solve the problems of insufficient detection precision and poor generalization of steel plate wave shapes (especially medium waves and other special types) under complex working conditions in the prior art, targeted optimization and improvement are carried out on the basis of a standard YOLO11 model. Real-time image data in the rolling process of the high-temperature steel plate is input, and accurate recognition and positioning of various wave-shaped defects are achieved through the improved model; the characteristics of a steel production process are combined, interference factors such as illumination and temperature under complex working conditions are adapted, and the robustness of a detection system is improved; and the position, type and size information of the wave-shaped defects is output, and accurate data support is provided for rolling process adjustment. In the working condition of wave shape detection of the hot-rolled steel plate, the real-time detection precision is improved, the omission ratio is reduced, diversified wave shape detection requirements under different rolling processes can be met, and the method has good industrial application prospects.

The invention relates to the technical field of geophysical crustal stress correction, in particular to a shale reservoir plastic method crustal stress correction method based on anisotropy. The method comprises the following steps: firstly, acquiring modal components of a fast shear wave signal and a slow shear wave signal; further obtaining interference factors in each signal according to the morphological similarity between different wave crests in the frequency domain of each modal component in combination with the frequency domain difference between different modal components; further performing weighted reconstruction and band-pass filtering on the modal component based on the interference factor; further accurately extracting the arrival time of the fast and slow transverse waves by using a cross-correlation method so as to calculate anisotropic parameters; and finally, the crustal stress calculation model is corrected based on the lithology data and the anisotropy parameters, a corrected minimum horizontal principal stress value is obtained, the problem of stress calculation deviation caused by anisotropy in a complex stratum is effectively solved, and a reliable basis is provided for precise drilling trajectory design, fracturing parameter optimization and efficient reservoir utilization.