57results about How to "Flexible ratio" patented technology

The invention provides a 3D additive-manufacturing bilateral laser welding method for a T-shaped structure, relates to a double-laser-beam welding method, and aims to solve the problems that under the conditions of high welding speed and long weld beads, in a bilateral laser welding process of a T-shaped structure, the circumstance that welding wires are continuously and stably fed into a molten pool at constant speed and even, coherent and non-defective bilateral weld joints are obtained by one-time welding is difficult to ensure, and alloy of weld microstructures is difficult to regulate and control specifically and flexibly. The method comprises the following steps: 1, chemically cleaning the surface of a stringer; 2, designing of a sedimentary layer: designing the sedimentary layer in a region to be welded on the surface of the stringer, wherein the cross section of the sedimentary layer is square or rectangular; 3, vertically placing a laser cladding head at a position right above the region to be welded on the surface of the stringer, carrying out laser 3D additive-manufacturing on regions to be welded on two sides of the stringer to obtain the sedimentary layer in a mode of coaxially feeding laser beams and alloy powder; and 4, carrying out bilateral laser welding on the stringer and an envelope to obtain bilateral symmetric weld joints. The 3D additive-manufacturing bilateral laser welding method for the T-shaped structure is used for double-laser welding of the T-shaped structure.

The invention relates to the technical field of unmanned aerial vehicles, and particularly relates to a flight control system special for a plant protection unmanned aerial vehicle. The system comprises a standardized large block, a power supply system, a communication system, a spraying system, the flight control system, a power system, a dispensing system, an image acquisition module, an image processing analysis module and a central processing module. The image acquisition module acquires original image data of a plant protection object; the original image data is fed back to the image processing and analyzing module; the image processing and analyzing module is used for processing and analyzing the original image data; and the image processing and analyzing module feeds back reagent ratio information suitable for an actual situation of the plant protection object to the central processing module, the central processing module makes the dispensing system carry out agent preparation,and agent spraying operation is completed through the spraying system. The system is simple in structure, durable in endurance, flexible in operation and good in practicability, and can be used for preparing a matched agent according to the actual condition of the plant protection object of the standardized large block.