6results about How to "Make up for instability" patented technology

The invention relates to the technical field of laser welding, and discloses a solid-state laser radar module packaging method and system.The method comprises the steps that a front shell and a rear shell of a solid-state laser module are subjected to laser welding packaging through historical output parameters, and parameters of a welding seam between the front shell and the rear shell after packaging is completed are collected; the flatness is compared with the preset standard flatness, whether the historical output parameters need to be adjusted or not is judged, the welding speed is adjusted according to the difference value of the flatness and the standard flatness, and the final value of the welding speed is obtained; comprehensively judging whether to adjust the laser power or not according to the depth comparison result and the width comparison result; and obtaining an adjustment coefficient of the laser power according to the fusion depth standard deviation, the fusion width standard deviation and the number of the unqualified collection points, and adjusting the laser power according to the adjustment coefficient to obtain a final value of the laser power. By dynamically adjusting the laser power and the welding speed, the stability and the welding seam quality in the welding process can be remarkably improved.

The invention provides a transverse control method and device for a road vehicle, a medium and electronic equipment. According to the method, the road type of the road is determined through the sensing parameter value; obtaining key road parameter values of the road type based on the road type and the perception parameter values; determining a virtual guide lane line in a target continuous image of the road based on the key road parameter value of the road type; and determining how the self-vehicle runs according to the virtual guide lane line based on the self-vehicle speed parameter value. The instability of special road type scene control is made up, and the use continuity of the lane keeping function is improved.

The present invention discloses a xylan-assisted rapid detection test paper for organic pollutants and its preparation method and application. The preparation method uses xylan as a green reductant and stabilizer to prepare Au-Ag bimetallic doped nanoparticles, and the Au-Ag bimetallic doped nanoparticles are attached to the surface of paper by a paper sheet coating method to prepare a rapid detection test paper for organic pollutants. The detection method of the test paper is based on the principle of Raman enhanced scattering to detect pesticides and other organic pollutants remaining in agricultural products and foods. The xylan-assisted rapid detection test paper for organic pollutants prepared by the present invention has the advantages of convenient operation, high detection sensitivity, strong recycling ability, uniform signal, good stability, and direct in-situ swab detection, and has excellent application value in applications such as rapid detection of pesticide residues, illegal additives, and toxic and harmful substances in agricultural products and foods.

The invention discloses a solar heat pump air conditioner, which belongs to the technical field of refrigerating and heating equipment, and comprises a four-way reversing valve, a compressor, a condenser, an evaporator, a solar storage device, a first one-way valve and a second one-way valve, and four outlets of the four-way reversing valve are respectively connected with the compressor, the condenser and the evaporator; the solar heat pump air conditioner is further provided with a fifth pipeline, the solar energy storage device is located on the fifth pipeline, the fifth pipeline is arranged in parallel with a pipeline used for communicating the evaporator with the four-way reversing valve, a first one-way valve is arranged on the pipeline used for communicating the evaporator with the four-way reversing valve, and a medium flowing out of the evaporator can flow to the compressor through the first one-way valve. A second one-way valve is arranged on the fifth pipeline, and a medium flowing out of the compressor can flow to the evaporator through the second one-way valve; therefore, during refrigeration, a medium directly flows back to the compressor from the evaporator without passing through the solar storage device, and the technical effect that the refrigeration effect in summer is not reduced is achieved.

The application provides a state space-based multi-line DC power flow controller modeling and control parameter optimization method, the instability of the DC network ring network system caused by the addition of the DC power flow control is made up by adding the matrix E containing PI control, and the influence of the phase margin and the dynamic characteristic is considered, the game optimization of the control parameters in the dynamic time domain model is carried out based on the eigenvalue, and the application has high universality and strong portability, and has high guiding significance for improving the control performance and optimization ability of the line-to-line power flow controller. The application models the multi-line DC power flow controller, breaks through the barrier of the scale expansion of the DC power flow controller, has the advantages of simple structure, high universality, strong applicability and the like, and provides a model basis for the subsequent research of the DC power flow controller.

The embodiment of the invention relates to a nanofiber preservative film prepared through solution blowing and used for intelligently monitoring freshness of fish meat and application of the nanofiber preservative film, and belongs to the technical field of preservative films. The preparation method of the nanofiber preservative film in the embodiment of the invention comprises the following steps: dissolving yellow-fin tuna skin gelatin in an acetic acid solution, adding chitosan after the yellow-fin tuna skin gelatin is completely dissolved, and uniformly stirring to obtain a yellow-fin tuna skin gelatin / chitosan blended solution; adding anthocyanin and curcumin into the yellow fin tuna skin gelatin / chitosan blended solution, and uniformly stirring to obtain a spinning solution; blowing and spinning the spinning solution, and collecting by using release paper to obtain the nanofiber preservative film. According to the nanofiber preservative film disclosed by the invention, the instability of the anthocyanin is made up by utilizing the anti-oxidation characteristic of the curcumin, and the color change limitation range of the curcumin is supplemented by a wide color change interval of the anthocyanin.