6results about How to "Simple design method" patented technology

This invention belongs to the field of machining technology, specifically relating to an optimized design method for stepped drilling tools for weakly rigid laminated structures. This method addresses the problems of workpiece deformation and interlayer scratches that easily occur during drilling of weakly rigid laminated structures. It uses interlayer clearance control as the core indicator and, based on the coupling relationship between drilling axial force and workpiece deformation, constructs a quantitative mapping relationship between the tool's stepped geometric parameters and the interlayer clearance during machining. Furthermore, by establishing a critical clearance criterion for interlayer damage and combining the deformation characteristics under different drilling modes, the key parameters of the stepped tool, namely the step diameter and step length, are optimized. This ensures that the maximum interlayer clearance during drilling remains below the critical value, effectively suppressing interlayer chip intrusion and interface damage, thereby improving drilling quality. This invention realizes a shift in tool design from experience-driven to mechanism-driven, and is applicable to high-quality hole machining of various weakly rigid laminated structures.

The application relates to a matrix keyboard circuit design method for eliminating key ghosting, which comprises the following steps: obtaining the number of keys of a target matrix keyboard circuit, designing a matrix keyboard circuit according to twice the number of keys, and obtaining a pre-designed matrix keyboard circuit; and deleting the keys with adjacent column parity alternation in the pre-designed matrix keyboard circuit, so that the target matrix keyboard circuit is obtained; the design method is simple, the key ghosting can be eliminated without additionally increasing diodes, the cost is low, and because the diodes are not needed, the situation that the row and column scanning methods are affected due to the forward tube voltage drop is avoided, and the reliability and stability of the row and column scanning methods are ensured.

The invention relates to the field of avionics bus signal integrity design, in particular to a method for optimizing ARINC659 bus signal integrity. Comprising the following steps: building an ARINC659 bus signal backboard architecture model; the terminating circuit structure of the transmitting and receiving end is optimized; refining resistance parameters according to the structure of the terminating circuit of the receiving and transmitting end; refining parallel inductance parameters according to the structure of the terminating circuit of the receiving and transmitting end; refining internal direct-current resistance parameters of the parallel inductors; a backboard terminating circuit structure is optimized; and refining series inductance parameters according to the backplane terminating structure. The method can be suitable for a multi-branch circuit signal integrity optimization scene, and impedance consistency is improved.

This invention discloses a metasurface-based mid-wave infrared focusing planar filter and its reverse design method. Based on the light field modulation characteristics of metasurfaces, a single-layer all-silicon dielectric metasurface can achieve spectral routing and focusing functions for a specified mid-wave infrared band, thus achieving a filtering effect similar to a Bayer filter, while significantly improving spectral energy utilization. The design utilizes an end-to-end reverse approach, employing genetic algorithms and binary search algorithms (DBS) to optimize structural parameters in stages, fully leveraging the advantages of each algorithm, lowering the design threshold, increasing optimization freedom, and thus improving optimization performance. Therefore, this invention can provide key device support for low-light mid-infrared night vision color imaging applications and expands new design ideas in the field of integration and miniaturization.

This invention relates to the field of motor design and manufacturing technology, and provides a motor structure that solves the problems of poor heat dissipation and easy local overheating in the end windings. The motor structure includes a stator core and windings. The windings include a winding slot portion assembled within a stator core slot and a winding end portion extending beyond the end face of the stator core. The cross-sectional width W of the winding end portion is... end The cross-sectional width W of the portion inside the winding slot is greater than the width of the winding slot. slot And W end >W end,min W end,min This refers to the minimum cross-sectional width of the end winding, determined based on the target temperature difference constraint between the end winding and the slot winding. This invention achieves axial temperature uniformity of the winding without adding a cooling system, eliminating localized hot spots and improving power density and insulation life.

This invention relates to a high-yield and efficient multi-face mining method with full mine filling, belonging to the field of mining technology. The method involves determining the number of working faces for simultaneous production based on the mine's designed capacity; optimizing the design of the mining, tunneling, and transportation system across multiple levels and working faces; conducting risk assessments for multi-face filling and mining through theoretical analysis and numerical simulation; determining filling equipment, processes, and design parameters for filling faces based on filling requirements; arranging multi-face mining working faces in multiple coal seams; and verifying and providing feedback on the key parameters and feasibility of adjusting multi-face filling and mining production and the filling system. This invention proposes efficient mining technologies for multi-face mining in single-layer mining areas and multi-face mining in three-dimensional space, along with corresponding efficient filling technologies and equipment. It overcomes the bottleneck of filling mining affecting coal production efficiency, enabling efficient filling mining in mines with a capacity of over ten million tons.