57results about How to "Guaranteed design accuracy" patented technology

The invention discloses a pneumatic/structure/static aeroelasticity coupling optimizing method for a high-aspect-ratio wing. The pneumatic/structure/static aeroelasticity coupling optimizing method is based on the system decomposition strategy in multidisciplinary optimization for system-level decomposition and subsystem-level decomposition. In pneumatic subsystem-level decomposition, the pneumatic performance under the cruising appearance serves as an optimal object, and the rigidity-appearance pneumatic performance in traditional pneumatic optimization is replaced; after pneumatic subsystem-level decomposition is completed, and pneumatic loads, pneumatic appearance design parameters and structural configuration parameters serve as the input conditions for structure subsystem-level optimization; after pneumatic subsystem-level decomposition and structure subsystem-level decomposition are completed, the target quantity of system-level decomposition is output, system-level decomposition is returned, and therefore the pneumatic/structure/static aeroelasticity multidisciplinary comprehensive optimization design process is achieved through iterative optimization of the pneumatic appearance parameters and the structure parameters.

The invention discloses a capacitive sensor model circuit. The capacitive sensor model circuit comprises a simulation plate circuit, wherein the input end of the simulation plate circuit is connected a simulation input circuit, the simulation input circuit is used for generating and sending sensor packaging electrical parameter signals and sensor plate influencing parameter signals, the output end of the simulation plate circuit is connected with a simulation output circuit, and the simulation output circuit is used for receiving and outputting the sensor packaging electrical parameter signals and the sensor plate influencing parameter signals. According to the capacitive sensor model circuit, factors which may influence test data in the detection process of a capacitive sensor are fully taken into consideration, the effect of the capacitive sensor model circuit is similar to the effect of the capacitive sensor which is actually applied, and the real and reliable data support is provided for research and development of the capacitive sensor.

The invention provides a parallel liquid phase chromatographic pump. The parallel liquid phase chromatographic pump comprises a cam with a camshaft, a pump head, at least two reciprocating fluid delivery mechanisms and a cam driving mechanism; the cam is an end cam; a cam curve comprises 1 to 5 curve units; and each curve unit comprises an ascending curve which can convert the rotating motion of the cam into the uniform linear motion of a plunger and a recession curve which enables the plunger to return in situ. Leads r of the ascending curve and the recession curve are both equal to 4v/npiD<2>, and a lead angle theta of the ascending curve is equal to 360 degrees/n, wherein v is the delivery volume of the parallel liquid phase chromatographic pump when the cam rotates a circle; D is the diameter of the plunger; n is the number of the plungers; and n is an integer of 2 to 10. A supporting roller has a conic shape; and the ratio of the circumference of one of any two cross sections of the supporting roller to the perimeter of the cam curve at the corresponding position is equal to the ratio of the circumference of the other of any two cross sections of the supporting roller to the perimeter of the cam curve at the corresponding position. The parallel liquid phase chromatographic pump has a simple structure and high fluid pressure stability, and is easy to design and process.

The invention belongs to the field of rotation plastic processing and discloses a method for flexible design of a spiral groove skew rolling roller. The method is characterized by comprising the steps of firstly, setting and defining relevant parameters of a roller groove in 3D modeling software; secondly, establishing a cylinder solid feature through a stretching command with the base circle of the roller serving as the cross section outline; thirdly, establishing an initial flange spiral trajectory and an outline cross section, and establishing an initial spiral flange on the solid cylindrical surface with the screw pitch serving as the basic lead and the height serving as the radius of the portion, with the largest cross section, of a rolled piece by scanning the initial flange outline cross section along the spiral trajectory; fourthly, obtaining flange heights at different groove positions and achieving the purpose that the height of the flange of the roller changes according to a designed change rule; fifthly, achieving the variable-lead geometrical transformation feature of the spiral groove of the roller; sixthly, finishing all the three-dimensional design of the skew rolling roller. By the adoption of the method, a 3D solid model of the roller can be generated quickly and accurately, flexible design of the roller is achieved, and design efficiency and accuracy are improved remarkably.

The invention discloses a multifunctional glare source device for simulating a street lamp field environment. A glare source main panel is included, and a plurality of groups of light outlet holes aresymmetrically formed in the glare source main panel; a uniform light source with a corresponding light-emitting area is arranged; an upper baffle, a lower baffle, a left baffle and a right baffle areobliquely installed on the four side edges of the glare source main panel correspondingly. The invention further discloses a multifunctional glare source design method for simulating the street lampfield environment. The arrangement of the lamps completely conforms to the perspective visual angle principle and are more suitable for actual street lamp environment, an instrument for measuring threshold increment (TI) can be calibrated, an instrument for measuring a unified glare value (UGR) and a glare value (GR) can also be calibrated, the application range is wide, the economy is high, a lamp with high uniformity is selected as a light source, a background light source is simulated by utilizing uniform reflected light of a glare source main panel and baffles on the periphery, and the design precision is ensured.

The invention discloses a thermal vacuum outgassing testing apparatus. The apparatus mainly comprises a vacuum cover (including an outgassing collecting device and a sample groove, etc.), a vacuum pumping system, a high guarantee system, a low temperature guarantee system, a temperature vacuum degree measurement and control system and an auxiliary system. The vacuum pumping system provides vacuum degree required by the testing apparatus; and the high temperature guarantee system and the low temperature guarantee system are respectively a high temperature device and a low temperature circulating device, and provide a sample heating temperature of 125+/-1 DEG C and a temperature of 25+/-1 DEG C required by a collecting plate. The apparatus provided by the invention guarantees effective conduction of cooling capacity between the collecting plate and a cooling plate; and the collecting plate and the cooling plate have same and uniform temperature, and employ a double-row parallel structure to avoid mutual interference of the released gas. The operation is quick and convenient, so as to improve the accuracy of the test result.

The invention relates to a model space quantification method and device, a mapping relationship establishment method and device, and equipment. The method comprises the steps of obtaining spatial geometric information and related attribute information of a to-be-quantified model in a design result; determining a design space of the to-be-quantized model according to the spatial geometric information and the related attribute information, and searching a standard space matched with the spatial geometric information and the related attribute information in a preset mapping relationship; and judging the design space by utilizing the standard space, and determining a quantification result of the to-be-quantified model. According to the method, the design result can be quantified spatially, sothat a designer can accurately judge whether the design result is reasonable in design or not according to the quantization result, and the accuracy of design result evaluation is improved.

The invention relates to the technical field of basic design calculation optimization in offshore wind power energy engineering, and particularly discloses an integrated analysis method for offshore wind power single pile foundation design calculation optimization drawing. The method comprises the steps: according to basic information of a project, performing analysis on the basis of nonlinear finite elements, converting nonlinear characteristics between piles and soil in the single-pile foundation into linear springs through calculation, calculating and analyzing a static force, a dynamic force and fatigue working conditions of the single-pile foundation, performing optimization design on static force, dynamic force and fatigue working conditions of the single pile foundation by taking engineering cost as a target value, then extracting basic drawing information, and generating a drawing and engineering quantity. According to the method, linearization processing is carried out on complex offshore wind power nonlinear calculation analysis, the calculation accuracy is guaranteed, meanwhile, the reaction time of calculation is saved, and the nondeterminacy of nonlinear analysis is reduced.

The present invention discloses a helical rotor of high-concentration hydrapulper. Said helical rotor includes the following several portions: rotor core, helical blades, toothed blades and base plate. The upper portion of said rotor core is made into the form of circular cylinder and its tower portion is made into the form of cone, the bottom portion of said cone body is connected with the described base plate, the circular cylinder body portion of said rotor core is equipped with three helical blades, the toothed blades are placed on the base plate and connected with the helical blades respectively. Besides, said invention also provides the working principle of said hydrapulper and its operation method.

The invention discloses a sand core mounting structure of a box for an automobile and a mounting method thereof, and relates to the technical field of sand core manufacturing. The sand core mounting structure of the box for the automobile and the mounting method thereof solve the circumstances that an existing split sand core structure is unstable in positioning, and sand cores are easily cracked,staggered and displaced after being assembled. The sand core mounting structure comprises a box die, and a metal base which is arranged on a lower die, wherein the sand cores are sequentially assembled on the metal base. The mounting method comprises the following sequential steps: positioning a small water channel sand core and a main sand core; closing a die at the rear side, and mounting a lugsand core; lapping a cross and core in a flow distribution hole; mounting the main sand core on the cross sand core; positioning a water channel sand core to the metal base and the main sand core; closing the die; and detecting whether the sand cores are subjected to cracking, staggering and displacing. According to the abovementioned technical scheme, the sand core mounting structure of the boxfor the automobile and the mounting method thereof, the sand core positioning and mounting stability can be effectively improved; the mounting is simple and quick; the positioning is accurate; in addition, the air exhausting effect of the split sand core structure in the box casting process can be completed.

The invention discloses a method for digitally manufacturing a sequence occlusion induction occlusal plate and the prepared occlusal plate. The method comprises the following steps: firstly, recording upper and lower dentition forms through three-dimensional scanning; a proper occlusal relationship and movement tracks of a mandibular movement hinge shaft, protraction and lateral movement are recorded, relative positions of upper and lower jaw dentitions are positioned by utilizing the occlusal relationship when clinical symptoms are eliminated, and after interference is removed by utilizing the movement tracks, a first occlusal plate is made by applying computer-aided material increase or material decrease. Selecting a stable position after wearing, and recording upper and lower dentition forms again; the occlusal relationship and the mandible motion trail are determined, a germination space is accurately designed at a target tooth position, and a plurality of occlusal plates are established through gradual guiding and occlusal.

The invention discloses a welding tool for automobile parts, and relates to the technical field of automobile part welding, the welding tool comprises a base, a mounting frame, a positioning mechanism and a compensation mechanism, and the mounting frame is adjustably mounted on the base. The positioning mechanism and the compensation mechanism are arranged on the mounting frame, and the output end of the driving motor drives the driving synchronizing wheel to rotate at a constant speed and a small angle, so that the welding heads in the welding guide grooves synchronously and dynamically deflect; it is guaranteed that the two sides of each welding guide groove are in a vertical state relative to the corresponding curved surface welding end faces of the front radar support and the angle radar support, a flat puncture welding head is located at any welding point of the curved surface end of a weldment, the two sides can completely penetrate through the weldment, and the wiredrawing phenomenon is avoided; under continuous pushing of the abutting piece and the top plate, complete penetrating welding of the weldment is matched, so that heat generated inside is uniform, heat dissipation outside is uniform, obvious springback deformation does not occur between the weldment and the welding body after welding, and the design precision is guaranteed.

The embodiment of the invention relates to a parameter design method for a preceding-stage DC-DC resistance-capacitance absorption circuit of a vehicle-mounted auxiliary power supply. The method comprises the steps: creating a first time domain model and an S domain model of a preceding-stage DC-DC circuit; determining a first voltage and current S domain expression of the resistance-capacitance absorption circuit; substituting preset system parameters into the first voltage and current S-domain expression to generate a corresponding second voltage and current S-domain expression; determining a capacitance parameter CS according to the second voltage S domain expression; performing time domain expression conversion on the second voltage and current S domain expression to generate a corresponding first voltage and current time domain expression; and determining a resistance parameter RS according to the capacitance parameter CS, the first voltage and the current time domain expression. According to the invention, the design accuracy is ensured.

The invention relates to an emergency oxygen supply valve. The emergency oxygen supply valve comprises a valve body provided with a gas supply opening used for communicating with a gas cylinder and a gas outlet used for outputting oxygen. A gas supply path communicating with the gas outlet is arranged in the valve body, a diaphragm used for cutting off the gas path is arranged on the gas supply path, a striker used for puncturing the diaphragm is movably assembled in the valve body, and the valve body is further provided with a driving mechanism which is in transmission connection with the striker and used for driving the striker to move in the direction of puncturing the diaphragm. As the driving mechanism is directly installed on the valve body, other structures do not need to be arranged during use, gas supply operation is convenient, and the portability of oxygen supply equipment using the oxygen supply valve can be effectively improved.

The invention provides a road marking design method. The method comprises the following steps: acquiring initial road data; correcting the initial road data according to the correction instruction toobtain target road data; calling a corresponding marking module from a preset module library according to the marking module calling instruction; and performing marking trial drawing according to thetarget road data and the marking module to obtain a road marking design drawing. According to the road marking design method, the special graphic design software system for the road marking is involved, various designed marking modules are stored in the software system, and a designer only needs to drag and select the corresponding marking modules during design; besides, the road data is importedby adopting the existing data, the existing data is refined and adjusted, and finally, the road marking design drawing is automatically completed according to drawing standards such as national standards, so that the drawing efficiency of designers is greatly improved, and the design precision is also ensured.

The invention relates to a method, a device, a medium and an electronic device for drawing transparent volume refraction interface lines. The method comprises the following steps: obtaining a horizontal incident ray, a refracted ray corresponding to the horizontal incident ray, and a first included angle A between the horizontal incident ray and the refracted ray; determining n incident angles B according to the first included angle A, the n being an integer greater than or equal to 1; selecting a target incident angle from the n incident angles B; a target refractive interface line being drawn according to the target incident angle and the refracted light ray. As a result, the drawing of transparent refractive interface in the design of photovoltaic condenser lens can be realized, the drawing efficiency is high, and the design accuracy of the interface angle of transparent refractive interface can be ensured.

The present invention relates to a condensing lens interface line drawing method and device, a medium and an electronic device. The method comprises the steps of: obtaining a plurality of first refracted rays and horizontal incident rays being in one-to-one correspondence with the first refracted rays, wherein the first refracted rays are collected on a focusing surface to form a light spot; for the first refracted rays, drawing a first refraction interface line according to the first refracted rays and the horizontal incident rays corresponding to the first refracted rays; determining targetsub interface lines of a condensing lens according to the refraction interface line for each first refracted rays; and performing end-to-end connection for each two target sub interface lines throughstraight lines to obtain a center interface line of the condensing lens. Therefore, the drawing of the certain interface line of the condensing lens in the concentrating photovoltaic lens design can be achieved, the drawing is high, and the design precision of the angle of the central interface line of the condensing lens can be ensured.