5results about How to "Reduce phase difference" patented technology

The invention relates to the technical field of phase synchronization checking, in particular to a cross-regional substation phase synchronization checking method and system based on 5G and Beidou technologies. Comprising a communication module, a positioning time synchronization module, a data acquisition module, a data processing phase calculation module, a data storage management module, a display control module, a cross-regional synchronization coordination module, a redundancy fault-tolerant module and an expansion function module. The communication module is used for 5G communication, providing a network interface and performing communication encryption; the positioning time synchronization module is used for receiving Beidou satellite signals and carrying out time correction and distribution; the data acquisition module is used for acquiring, buffering and filtering data; by adopting 5G and Beidou technologies and combining a distributed consistency algorithm, an adaptive synchronization algorithm and an intelligent fault processing mechanism, the cross-regional substation phase synchronization checking method and system can significantly improve precision, efficiency and reliability, overcome the defects of a traditional method, and provide powerful guarantee for efficient operation of a modern power system.

The utility model discloses a laser projection system which comprises at least two light source assemblies, the light source assemblies are used for projecting light rays, the light rays are respectively guided to a fluorescent wheel to be subjected to color processing to form first light rays and second light rays, and the first light rays and the second light rays are staggered in space to improve the optical path difference of the light rays; the first light and the second light are combined into third light through a light combining assembly, color mixing is carried out through a color wheel, homogenizing modulation is carried out through a light homogenizing assembly, and finally the third light is reflected to a projection lens. The utility model further discloses a laser projector comprising the laser projection system. The interference among scattered waves can be effectively reduced through the spatial dislocation design, so that the speckle effect is improved; and meanwhile, the utilization rate of light rays is improved, so that more light rays can be effectively utilized, and the brightness and definition of a projected image are enhanced.

Embodiments of this application provide a multi-level direct current converter, a voltage control method for a flying capacitor, and a control apparatus. The multi-level direct current converter includes a controller, a flying capacitor, two switching transistor groups, and an inductor. The method for controlling a flying capacitor includes: in response to that an absolute value of a difference between a sampling voltage and a reference voltage of the flying capacitor is greater than a first threshold, adjusting a duty cycle difference between first switching transistors in two switching transistor groups or a phase difference between carriers of first switching transistors in two switching transistor groups based on a magnitude of an inductor current. According to embodiments of this application, a voltage of the flying capacitor can be controlled, to improve operation stability of the multi-level direct current converter.

This invention relates to the field of seismic signal processing technology, specifically disclosing a method and apparatus for processing the consistency between explosive source and controlled source seismic data. The method includes: performing phase-shift filtering on controlled source data to obtain processed data; mixing and superimposing the processed data with explosive source data to generate a mixed superimposed profile; analyzing the mixed superimposed profile and the separately superimposed profile of the explosive source data to obtain optimal phase-shift filtering parameters; performing matched filtering based on the optimal phase-shift filtering parameters to obtain a matched filtering factor; and applying the matched filtering factor to pre-stack data to correct the controlled source wavelet. This invention utilizes the data adaptability of phase-shift filtering, considering the differences in seismic data caused by different excitation and reception conditions, and reduces the phase difference between the two types of source data in a time-varying and spatially varying manner. Combined with matched filtering, it further aligns the controlled source data with the explosive source data in terms of phase, frequency, and amplitude, providing better basic data for subsequent data processing.

This invention relates to the field of microwave and millimeter-wave radio frequency passive devices, specifically a waveguide full-bandwidth equal-amplitude and in-phase H-plane power divider. It includes a common-end rectangular waveguide, which intersects in the H-plane to form two branch rectangular waveguides, each including a first and a second branch rectangular waveguide. A broadband impedance matching component is disposed at the branch junction. This component includes a multi-stage stepped impedance transformation structure, a center capacitive matching protrusion, and a chamfered branch corner structure. The multi-stage stepped impedance transformation structure is arranged in the transition region between the common-end rectangular waveguide and the branch junction. This invention achieves ultra-wideband power distribution in the 40GHz to 60GHz millimeter-wave band, alleviates the impedance discontinuity problem at the branch junction, suppresses the generation of higher-order modes during transmission, reduces the amplitude and phase differences between the two output signals, and improves the device's standing wave ratio and insertion loss performance.