5results about How to "Avoid unreliability" patented technology

The application discloses a kind of secondary frequency control method, device and storage medium based on neural network, belong to microgrid control technical field, method includes: obtaining the rated angular frequency of distributed microgrid preset, and the active power of each distributed power generation unit;Active power is respectively input into the corresponding pre-trained neural network, and the frequency compensation of each distributed power generation unit is output, the frequency deviation caused by droop control is compensated, so that the angular frequency of distributed microgrid output recovers to the rated angular frequency preset;Corresponding pre-trained neural network refers to the neural network that each distributed power generation unit corresponds one training process and is added privacy protection processing, so that attacker cannot infer whether single sample is used for the training of neural network according to neural network output result.The application can improve the security and stability of microgrid, solve the problem that traditional secondary frequency control method exists privacy leakage risk and security risk.

The utility model discloses a motor direct connection rotary body mixer, include: mounting panel, install the motor of revolution of mounting panel on, with the output shaft connection of motor of revolution of revolution frame, the electric slip ring of sleeve on the output shaft of motor of revolution, the autorotation device of symmetrical installation on the both ends of revolution frame, the autorotation device includes: install motor support, mounting seat respectively on the revolution frame, install the autorotation motor of motor support, install the bearing in mounting seat, with the inner ring connection of bearing of rotation axis, with centrifugal cylinder of rotation axis connection, the output shaft of autorotation motor is connected with rotation axis, and electric slip ring is connected with autorotation motor electricity. The utility model discloses each autorotation device and configure a single autorotation motor, thereby need not specially setting up belt power transmission system, effectively avoided the unreliability of belt power transmission system, realized the demand of satisfying long time stable operation.

The invention discloses a hydraulic machinery stall vortex online identification method based on nonlinear dynamic characteristics, and relates to the field of hydraulic machinery operation monitoring and fault diagnose.The hydraulic machinery stall vortex online identification method can distinguish loading and unloading processes by introducing an empirical formula and a model of a guide vane change rate, accurately identifies a vortex strip state on a hysteresis loop, and improves the accuracy of stall vortex identification. The dynamic error is reduced by more than 80%; secondly, through an empirical formula, the input of the neural network has a clear hydraulics meaning (such as a velocity triangle relation), and the unreliability of a pure black box model is avoided; wherein the complex fluid physical law is concentrated in an empirical formula, the neural network only needs to process residual mapping, the operation speed is extremely high, and the method can be deployed in an in-situ control unit.

The invention relates to a curved surface substrate component packaging method, and relates to the technical field of aviation composite material forming. Comprising the steps that a substrate is of a curved surface structure, the curved surface is a non-developable curved surface, the non-developable curved surface is divided into a plurality of sub curved surfaces, all the sub curved surfaces form a complete non-developable curved surface, and all the sub curved surfaces are developable curved surfaces; cutting the packaging material into corresponding small blocks corresponding to each sub-curved surface, and paving each small block of packaging material on the surface of the substrate corresponding to the sub-curved surface according to the shape; enabling all the small packaging materials to form a complete packaging material layer; after the complete packaging material layer is thermally cured, it can be ensured that electronic components on the surface of the substrate are packaged. The method is suitable for forming of a complex curved surface active electromagnetic functional structure, planar filling of a three-dimensional structure component is achieved through secondary packaging treatment of a high-density component, and a good bonding interface is provided for subsequent bonding.

The utility model relates to pipe joint installation technical field discloses an auxiliary structure for installing round pipe culvert pipe joint, include: mobile support, azimuth adjusting assembly and hoisting assembly, hoisting assembly is used for hoisting pipe culvert, hoisting assembly is connected with azimuth adjusting assembly, azimuth adjusting assembly installs on mobile support, azimuth adjusting assembly is configured as can adjust the plane position of hoisting assembly, azimuth adjusting assembly includes first guide rail and second guide rail, first guide rail extends along the first direction, second guide rail is movably installed on first guide rail to make second guide rail can move along the first direction, second guide rail extends along the second direction, and hoisting assembly is movably installed on second guide rail to make hoisting assembly can move along the second direction, first direction is perpendicular with second direction. In the utility model, through the perpendicular intersection design of first guide rail (moves along the first direction) and second guide rail (moves along the second direction), the accurate displacement adjustment of hoisting assembly in plane is realized.