13results about How to "Will not affect performance" patented technology

This invention provides a three-vector model predictive deadbeat current control method for PMSM based on geometric analysis. The method mainly includes the following steps: Step 1: Establish a mathematical model of the PMSM motor, use this model to obtain the current prediction quantity for model predictive current control, and then use deadbeat control to convert the current prediction quantity into a voltage prediction quantity; Step 2: Set the cost function in model predictive control to the root mean square form, and establish a relationship between the cost function value and the vectors in the voltage vector diagram; Step 3: Calculate the duty cycle of the three vectors' action time for each cycle by analyzing the geometric relationship of the voltage vector diagram; Step 4: Pre-modulate or compensate the voltage of the over-modulated part to ensure stable motor operation and reduce the error during over-modulation.

The application provides a segmented motor stator and motor, which comprises a stator body, insulating end plates arranged at both ends of the stator body along the axial direction of the stator body, fixed end plates arranged on the side of the insulating end plates away from the stator body, and fasteners arranged on the stator body for fixing the insulating end plates and the fixed end plates at both ends of the stator body. The insulating end plates are installed between the fixed end plates and the stator body, so that the insulating effect is achieved, the magnetic conductivity of the fixed end plates does not affect the performance of the motor, the efficiency of the motor is improved, and the energy consumption is reduced.

The application provides a task processing method and device, a storage medium and a computer program product. The method comprises the following steps: receiving a big data development task, and matching a first intelligent agent corresponding to the big data development task; acquiring a first tool corresponding to the first intelligent agent; accessing a large model through a large model adaptation service, and selecting a target tool for the big data development task from the first tool by using the large model; and calling a big data platform to execute the big data development task by using the target tool.

The application relates to a high-fidelity ultra-low polygon CAD grid simplification processing method and medium, which comprises the following steps: determining a simplification grid target and a vertex removal target area of a 2-manifold triangular grid corresponding to a CAD three-dimensional model to be simplified; setting an edge folding normal deviation constraint and adopting an inert evaluation strategy to maintain a candidate edge folding queue and obtaining a candidate folding position of a selected candidate edge in the queue according to a QEM error matrix; performing a folding operation on the selected candidate edge satisfying the edge folding normal deviation constraint; performing vertex removal on a candidate edge not satisfying the edge folding normal deviation constraint but belonging to the vertex removal target area and satisfying a preset condition; and outputting an updated 2-manifold triangular grid reaching the simplification grid target as a simplified triangular grid. In this way, it is ensured that each simplification step can strictly maintain the geometric effectiveness and direction consistency of the grid, and meanwhile, the runtime performance is not affected.

The invention provides a preparation method of a high-voltage composite positive electrode, which comprises the following steps: mixing a low-melting-point solid electrolyte or a precursor of the low-melting-point solid electrolyte, a high-voltage polycrystalline positive electrode material and a conductive agent to obtain a composite positive electrode precursor; and carrying out low-temperature heat treatment on the composite positive electrode precursor to melt and permeate the solid electrolyte into the high-voltage polycrystalline positive electrode material, and uniformly adhering the conductive agent to the surface of the positive electrode along with the solidification of the molten electrolyte during cooling to obtain the high-voltage composite positive electrode. The preparation method synchronously solves the problems that internal pores of the high-voltage polycrystalline positive electrode material hinder ion and electron transmission and the polycrystalline morphology of the positive electrode material is easy to break. The invention also provides the high-voltage composite positive electrode prepared on the basis of the preparation method and a solid-state battery comprising the high-voltage composite positive electrode. The solid-state battery based on the high-voltage composite positive electrode is high in utilization rate of active substances and excellent in rate capability and cycle performance.

This utility model provides a movable tire sipe mold, including a fixing component, which comprises an upper fixing component and a lower fixing component. The lower fixing component is fixedly installed at the bottom of the upper fixing component. Movable components are slidably connected to both sides of the fixing component. The movable components are used to slide downwards during demolding to reduce the width of the entire sipe mold. After the tire vulcanization is completed, when the mold needs to be pulled out, the movable components on the mold will smoothly slide downwards along the sliding surface of the lower fixing component under the action of extrusion and demolding forces when passing through the narrow section, thereby reducing the width of the original lower part of the mold. This improves the tearing of the tread block edges in the narrow grooves of the teardrop-shaped grooves during demolding, maintains the original design of the tire grooves, and improves the integrity of the tread blocks.

The utility model belongs to the field of intelligent wearable equipment, and discloses a watch body structure and an intelligent watch, the watch body structure comprises a housing, a loudspeaker, a buckle button and a button cover, one side of the housing is provided with a sound outlet hole; the loudspeaker is arranged in the shell and is arranged corresponding to the sound outlet hole; the buckle key is arranged outside the shell and corresponds to the sound outlet hole, a gap is formed between the buckle key and the sound outlet hole, a sound outlet channel is formed between the buckle key and the sound outlet hole, and the buckle key comprises a pressing part; the button cover is arranged outside the buckle button and is fixedly connected with the shell, a loudspeaker hole is formed in the button cover, the pressing part extends into the loudspeaker hole, a gap is formed between the pressing part and the side wall of the loudspeaker hole, and the gap is communicated with the sound outlet channel. According to the utility model, the buckle button is combined with the sound outlet hole, so that the limited space on the side surface of the watch body is effectively utilized, the overall layout is optimized, and the overall function and performance of the intelligent watch are not affected while the quick release function is realized.

The utility model discloses a multifunctional steaming and stewing cabinet, and particularly relates to the technical field of catering equipment, the multifunctional steaming and stewing cabinet comprises a C-shaped plate, the front end of the C-shaped plate is rotatably connected with a sealing door, the middle of an inner cavity of the C-shaped plate is fixedly connected with a plurality of placing mechanisms in a rectangular distribution mode, and the rear end of the C-shaped plate is fixedly connected with a flow guide mechanism. A steam mechanism is fixedly connected to the right side of the bottom wall of an inner cavity of the C-shaped plate, and supporting legs are fixedly connected to the four corners of the lower end of the C-shaped plate. According to the multifunctional steaming and stewing cabinet, a large amount of steam water generated in the steaming and stewing process can be collected and filtered through the flow guide mechanism, the steam water cannot remain in the steaming and stewing cabinet, scale cannot be formed on the inner surface of equipment, the heat transfer efficiency is improved, and the performance and the service life of the equipment cannot be affected; through the arrangement of the placing mechanism, food materials on each layer of steaming rack can be in direct contact with fresh steam, so that all parts of the food materials are heated more uniformly, the cooking time is not prolonged, and the cooking efficiency is improved.

This invention discloses a method for manufacturing an inter-gate dielectric layer of an SGT semiconductor device, comprising: Step 1, forming a gate trench and a bottom dielectric layer, wherein the bottom dielectric layer covers the inner and outer surfaces of the gate trench. Step 2, forming a shielding gate conductive material layer and etching back the shielding gate conductive material layer. Step 3, using the bottom dielectric layer as a mask, forming a first inter-gate dielectric layer of desired thickness on the exposed top surface of the shielding gate conductive material layer. Step 4, forming a first mask layer to protect the top region of the first inter-gate dielectric layer. Step 5, performing a first etching using the first mask layer as a mask; after the first etching, the bottom dielectric layer located above the top surface of the shielding gate conductive material layer serves as a second inter-gate dielectric layer. Step 6, removing the first mask layer. Step 7, forming the gate dielectric layer and the gate conductive material layer. This invention allows for independent adjustment of the thickness of the inter-gate dielectric layer with high quality and a simple process.

The application provides a preparation method of a flash memory device, comprising the following steps: providing a substrate with a stacked floating gate layer, an ONO layer and a control gate layer formed thereon, the substrate is provided with a groove, and the groove is provided with a side wall structure; forming a conductive contact layer by using a self-aligned silicide process; performing selective etching on the side wall structure by using an SPT process; and forming an interlayer insulating medium layer. The application performs selective etching on the side wall structure by using an SPT (stress proximity technique) process. Since the etching selectivity of the SPT process on some material layers (silicon nitride layers) is high, the filling of the interlayer insulating medium layer in the groove is improved by performing targeted thinning on some material layers in the side wall structure after the formation of the conductive contact layer (self-aligned silicide process), so that the filling of the interlayer insulating medium layer can be improved without affecting the electrical performance of the device, the void defects are avoided, and the device yield is further improved.

This utility model discloses a high-efficiency lamination device for transformer cores, including a mounting plate. A gasket assembly is mounted on the outer surface of the mounting plate. The gasket assembly includes a groove and a U-shaped plate. The groove is formed on the outer surface of the mounting plate, and a set of rotating rollers is installed inside the groove. The bottom surface of the U-shaped plate is fixedly connected to the upper surface of the mounting plate. Two sliding rods are slidably connected to the outer surface of the U-shaped plate, and a limit plate is fixedly connected to the end of each sliding rod that is close to each other. This high-efficiency lamination device for transformer cores, through the coordinated arrangement of the mounting plate and the gasket assembly, achieves automated lamination operation, thereby improving lamination efficiency, meeting the needs of large-scale production, ensuring the quality of subsequent gaskets, and preventing problems such as lamination misalignment and uneven gaps, thus not affecting the performance and service life of the transformer.

The application discloses a double-protection structure of a circuit breaker. The double-protection structure of the circuit breaker can solve the problem that the double-protection structure of the current circuit breaker can influence the performance of a bimetallic strip. The housing inner wall is provided with a limiting mechanism which is matched with the mutual inductor in the circumferential direction and / or the axial direction. The mutual inductor is provided with a sensing hole in the axial direction. The bimetallic strip comprises a connecting section, an intermediate section and an action section. The connecting section is connected with the connecting piece. The action section is used for driving the lock catch of the circuit breaker to act. At least part of the intermediate section is arranged in the sensing hole. The sensing hole is used for providing the intermediate section arranged in the sensing hole with the space required by the action when the bimetallic strip is deformed. The double-protection structure of the circuit breaker can normally provide the double-protection function. Only a small change is needed for the existing circuit breaker. The double-protection structure of the circuit breaker can be matched with the conventional bimetallic strip. The mold cost of the enterprise is reduced. The mutual inductor does not influence the deformation of the bimetallic strip and does not influence the performance of the bimetallic strip.

The application provides a regeneration method of natural uranium extractant. In the regeneration method of the natural uranium extractant, the natural uranium extractant comprises tributyl phosphate and hydrogenated kerosene, and the regeneration method comprises the following steps which are sequentially performed: S1: washing the natural uranium extractant to be regenerated by using a sodium hydroxide solution, and then acidizing by using a nitric acid solution; S2: washing the natural uranium extractant after the washing and acidizing in step S1 by using a sodium carbonate solution, and then acidizing by using a nitric acid solution to obtain the regenerated natural uranium extractant. The regenerated natural uranium extractant obtained by the regeneration method has good selectivity and stability, and the reuse of the natural uranium extractant is realized.