5results about How to "Intuitive knowledge" patented technology

The invention discloses a synchronous control coupling nonlinear modeling method for an inverter parallel grid-connected system, and belongs to the technical field of new energy grid-connected synchronous control system modeling. According to the method, the two grid-following type grid-connected inverter systems are connected to the power grid in parallel, the dynamic response of the phase-locked loop on the alternating current side is considered, a system nonlinear model is established through a large-signal modeling method, and the dynamic response relation of input and output of the nonlinear system is known and known more visually; in addition, according to the method, a Takagi and Sugeno method is further used for conducting fuzzy linearization on nonlinear terms, a T-S fuzzy model of the system is established, simulation verification shows that a dynamic response curve of the fuzzy model is basically matched with an original model, certain reliability is achieved, and the method is suitable for large-scale popularization and application. The fuzzy model provides an intuitive and controllable model for subsequent research on the influence of different factors on the stability of a plurality of grid-following type grid-connected inverter systems.

This invention provides a wine bottle protection structure and a wine display cabinet, including an inner tray with a bottom groove adapted to the shape of the wine bottle body for supporting the inner side of the bottle; brackets disposed on both sides of the inner tray, the bottom of which is fixedly connected to the inner tray via a connecting shaft that rotates coaxially with the bottom of the inner tray; an outer tray movably disposed between the two brackets, having a downward pressing groove adapted to the shape of the wine bottle body for cooperating with the bottom groove to complete the enclosure and protection of the wine bottle body; and an elastic pressing component for elastically pressing the brackets to drive the brackets to rotate toward the inner tray; wherein, the outer tray is made of transparent material and has a transparent convex mirror panel opposite to the label information on the wine bottle body for magnifying the label information. This invention can fully protect the wine bottle while maintaining the display and viewing requirements of the wine bottle; and the transparent convex mirror panel allows users to more intuitively see the label information of the wine bottle, making it easier for users to judge and purchase.

The utility model relates to the technical field of practical training equipment, in particular to a danger demonstration device for electric power safety training, which comprises a base, two power connection columns are mounted on the base through a mounting seat, a strip-shaped plate is fixedly mounted on the base, a supporting block is slidably mounted on the strip-shaped plate, a rotating hole is formed in the supporting block, and the rotating hole is communicated with the strip-shaped plate. A rotating shaft is rotatably mounted in the rotating hole, a rotating disc is fixedly mounted at one end of the rotating shaft, two fixing seats are fixedly mounted on the rotating disc, two mounting blocks are fixedly mounted on each of the two fixing seats, inserting holes are formed in the surfaces of the mounting blocks, and simulation fingers are inserted in the inserting holes. According to the utility model, through mutual cooperation of the supporting block, the rotating shaft, the rotating disc, the fixed seat, the installation block, the simulation finger and the power connection column, a real-time scene when the finger is in contact with power is simulated, so that a student can observe an electric shock scene more visually and know the risk of field work more visually.

The invention provides a color-guided step-visualized tooth preparation teaching aid. The color-guided step-visualized tooth preparation teaching aid comprises a tooth root area and a tooth crown area, the dental crown area sequentially comprises a tooth preparation area, a wide area and a non-tooth preparation area from outside to inside, wherein the tooth preparation area is provided with a plurality of operation areas which are different in color and need to be ground in sequence in the operation process, the wide area allows grinding, and the non-tooth preparation area forbids grinding; the wide area and the non-tooth preparation area are formed by processing materials with different colors, and the colors of the wide area and the non-tooth preparation area are different from the color of each operation area of the tooth preparation area. The invention also provides a use method of the tooth preparation teaching aid. According to the method, the dental crown area is subjected to partition design, different colors are used for clear identification, and color guidance is used for assisting an operator to carry out a standard tooth preparation operation process, so that the operator can accurately master a tooth preparation sequence and a preparation amount, a preparation effect can be fed back in real time, process and result evaluation is facilitated, and the operation efficiency is improved. Oral medicine professionals are helped to optimize operation skills, and working efficiency is improved.

The present invention relates to a 100GOTN signal processing platform and processing method based on an X86 board, which can perform frame analysis, demapping and load identification on 100GOTN signals, and can switch and output to an X86 board for flow collection and analysis processing of different granularities according to different encapsulated flows carried, collect raw data at high speed for 10GSDH, perform SDH frame structure analysis and decapsulation processing on the raw data, dig out and strip out Ethernet data, obtain packet data files, adopt packet collection mode for 100GE and 10GE to obtain collected data, perform deep packet detection on the packet data files, perform Ethernet protocol analysis on the data to obtain IP quintuples and load information, and obtain statistical information on the behavior trend of network data according to a data cleaning module. The bypass access collection, decapsulation mapping, deep analysis, data cleaning statistics and other functions of 100GOTN signals are realized.