33results about How to "Flexible parameter adjustment" patented technology

The invention provides a test bed for detecting positive and negative work of a linear moving electric mechanism, which realizes automation of testing the service life of the positive and negative work of the electric mechanism. The test bed comprises a sliding rod assembly and a positive and negative loading switching system; the number of loading weights is two, and the two loading weights are matched with two bottom weights to form two groups of loading assemblies respectively; the number of variable loading wheels is two, and the center connecting line of the variable loading wheels is parallel to the linear moving work direction; the sliding rod assembly is in matched connection with a linear moving work unit to drive the two variable loading wheels to rotate in the same direction; and the positive and negative loading switching system comprises two groups of windlass assemblies arranged aiming at two groups of loading assemblies and a sensing limit device, wherein the windlass assemblies are used for lifting or lowering the loading weights. The test bed has simple structure, and can efficiently and safely test the work service life of the electric mechanism.

The invention discloses a uniform light focusing LED light source module design method based on a free-form surface Fresnel lens. The method comprises the specific steps that a free-form surface partition area of the Fresnel lens is divided according to the number of LED light sources and the light emitting characteristic; then, the number of annular belts, a free-form surface, the height of the annular belts and a working side angle of the Fresnel lens are set according to light distribution requirements, so that the focal length, the numerical aperture and the light focusing angle of the Fresnel lens are obtained, and a Fresnel lens model and an LED light source module structure are acquired; and an illuminance distribution verification design effect is obtained by simulating the path of light rays refracted through the Fresnel lens. According to the uniform light focusing LED light source module design method based on the free-form surface Fresnel lens, the problems that traditional LED light source lenses are generally poor in light distribution effect, low in light focusing multiplying power, large in thickness, only capable of being matched with a single LED light source and the like are solved; the method can adapt to light source module designs of different light source numbers and different sizes; and an integrated uniform light focusing LED light source module large in area can be obtained through the characteristics of the free-form surface Fresnel lens.

The invention discloses a polarization beam splitter and beam splitting method based on a surface plasmonic hybrid waveguide. The polarization beam splitter comprises a housing, a first optical waveguide, and a second optical waveguide, wherein the first optical waveguide and the second optical waveguide that are arranged in the housing are arranged in parallel at an interval in an asymmetric manner. A nano slit is formed at the interval of the first optical waveguide and the second optical waveguide. The first optical waveguide and the second optical waveguide are formed by metal thin films, low-refractive-index films, high-refractive-index films and nano grooves. The cavity among the housing, the first optical waveguide and the second optical waveguide is filled with air. The polarization beam splitter has advantages of ultra small size, ultra low crosstalk, large operating bandwidth, and high integration.

The invention discloses a lever-based bistable non-linear energy collecting device, which comprises an energy collecting device and a lever structure, wherein the energy collecting device adopts a bistable non-linear structure and converts mechanical energy into electric energy by using vibration; and the lever structure is combined with the bistable non-linear structure and used for amplifying the excitation effect so as to improve the energy collecting efficiency. The lever-based bistable non-linear energy collecting device provided by the invention can significantly amplify the excitation effect, has a good cross-well dynamic response and can significantly improve the energy collecting efficiency.

The invention relates to an assessment method for penetrability of a plant liquid medicine canopy. The assessment method comprises the following steps: (1) by taking a multi-layer instrument shelter as a plant canopy model, inserting blades, regulating and recording quantity of blades at each layer, blade layer spacing, single-layer blade porosity, an interlayer blade arrangement mode and blade elastic modulus; (2) arranging water-sensitive paper on front and back surfaces of each blade; (3) vertically placing the multi-layer instrument shelter on a measuring point, performing liquid medicine spray experiment above the multi-layer instrument shelter, and recording wind speed of the canopy surface; (4) collecting the water-sensitive paper, and recording parameter information such as grain size of deposited fog drops and a rate of deposition; (5) processing data, and quantitatively analyzing a relationship between parameters. According to the assessment method, by regulating the parameters of the canopy perpendicular wind speed, the single-layer blade porosity, the blade layer spacing, the blade elastic modulus and the like, the correlation between a penetration rate of fog drops with different grain sizes and each parameter is analyzed and extracted, so that a theoretical direction is provided for required drug delivery dose for plant protection and a fog drop grain size range.

The invention discloses a behavioral model-based electromagnetic compatibility circuit-level integrated modeling method for electronic equipment. The behavioral model-based electromagnetic compatibility circuit-level integrated modeling method comprises the following steps: firstly, performing equivalent circuit modeling of a front-end field structure of the electronic equipment; establishing a lumped element circuit model; then, performing behavioral model-based bottom layer physical circuit modeling; establishing a behavioral model for describing the input / output functional characteristics of a circuit; finally, performing integration on the lumped element circuit model and the behavioral model for describing the input / output functional characteristics of the circuit, and establishing an integrated circuit-level model of the electronic equipment, wherein the integrated circuit-level model is uniformly used for simulated analysis of a circuit level. According to the behavioral model-based electromagnetic compatibility circuit-level integrated modeling method disclosed by the invention, calculation is simplified, and a data interface for traditional field-circuit collaborative analysis is omitted, and the problem that a large number of product differential equations are difficult to solve due to high integration level of the circuit in a system and high complexity of digital-analog hybrid is solved; the behavioral model and the circuit model can also mutually compatible, so that the analysis efficiency is improved; the established integrated circuit model is high in universality; parameters of the model can be flexibly adjusted according to the performance of the electronic equipment; the behavioral model-based electromagnetic compatibility circuit-level integrated modeling method is simple, and is easy to implement.

The invention provides an optical amplification transmission device applied to an optical fiber time transfer network, comprising a first detection device, a second detection device, a bidirectional optical amplification device, and a time delay measurement device; the first detection device is connected with the bidirectional optical amplification device respectively 1. The time delay measurement device is connected to divide the optical signal transmitted into the first detection device into two paths, one path is connected to the bidirectional optical amplification device, and the other path is connected to the time delay measurement device through the photoelectric conversion device; the bidirectional optical amplification device is used to Two-way amplification of the optical signal; the second detection device is connected with the two-way optical amplification device and the time delay measurement device respectively; the time delay measurement device measures the signal time delay difference between the first detection device and the second detection device, and then according to the signal time delay Calculate the transmission error of the time signal through the optical amplification device, and transmit the transmission error data to the optical fiber time transfer device for calculation and processing of the time transfer signal, thereby improving the time transfer performance. The technical scheme of the invention can flexibly adjust the parameters of the amplifier according to the network planning and application, and is convenient for engineering application. This method has a wide range of applications and has application value.