59results about How to "Uniform position" patented technology

The invention relates to a method for preparing a plurality of layers of superfine silicon lines. The method comprises the following steps: preparing a silicon etching masking layer; extending to form Fin and source drain regions on two ends of the Fin; and forming the plurality of layers of superfine silicon lines. The method has the advantages that the positions of the superfine lines can be accurately defined through the deposition of an atomic layer, and the controllability is good; the anisotropy etching on silicon stops automatically, a process window is large, and the sections of nano lines obtained by etching are uniform and smooth in appearance; the process for forming a plurality of layers of side wall etching masks by a method of firstly preparing masks and then extending a channel is simple, and the plurality of layers of side wall masks can be obtained only by one etching of the extension window regardless of the number of masking layers; the lines with sizes of less than 10nm can be prepared by combining oxidization technology, thus meeting the requirement of the key process of small-sized devices; polycrystalline silicon can be subjected to wet etching with a TMAH solution, and the operation is simple, convenient and safe; metal ions are not introduced, and the method is applicable to the integrated circuit manufacturing technology; the method is entirely compatible with a bulk silicon planar transistor process, and the process cost is small.

A device and method for controlling high-speed operation of a motor, which control the high-speed operation of a motor by evaluating the rotor position and rotor speed of a synchronous motor, without the need for a PI (proportional plus integral) regulator, thereby eliminating user inconvenience and Ensures control of the rotor position and rotor speed of synchronous motors. The device includes: a coordinate system converter, which receives the triangular coordinate voltage and current, and converts them into static coordinate voltage and current; a magnetic flux observer, which receives the converted static coordinate voltage and current, and observes and outputs the stator magnetic flux ; a position estimator that receives the transformed static coordinate voltage and current and observed stator flux, and evaluates and outputs the rotor position; and a rotational speed estimator that receives the estimated rotor position, and evaluates and outputs the rotor rotational speed.

The invention discloses a welding platform for an anti-theft window. The welding platform comprises a frame body and a platform plate. The top of the frame body is fixedly provided with the platform plate in a welded mode. A front-rear positioning device is fixedly arranged on the lower side of the platform plate, and a left-right positioning device is arranged on the upper portion of the platformplate. An even positioning device is arranged on the lower portion of the platform plate, and a tool box is fixedly arranged on the right side of the middle of the frame body. An electrical box is fixedly arranged on the left side of the middle of the frame body, and travelling wheels are connected to and arranged at the bottom of the frame body through bolts. During using, rods of the anti-theftwindow are placed on the platform plate, thus it is ensured that a frame of the anti-theft window is mutually perpendicular through the front-rear positioning device and the left-right positioning device, and through the left-right positioning device and the left-right positioning device, handrails in the anti-theft window are evenly distributed; and the welding platform has the advantages of being simple in structure and convenient to use.

The invention discloses an automatic pipe fitting feeding and grinding device. The feeding and grinding device comprises a feeding device, a supporting device, a grinding device and a measuring device. The supporting device is located at the discharging end of the feeding device, and the grinding device is located above the supporting device; the measuring device is located at the discharging end of the grinding device; through the feeding device, automatic feeding is achieved, a supporting mechanism with the adjusting function is adopted, the structure is simple, operation is convenient, and the adjustable effect is achieved; a lifting device is arranged to enable a whole grinding head mechanism to be capable of vertically moving and moving laterally, use limitation is avoided, and after grinding, the measuring device enables a steel pipe to rotate during clamping through cooperation of a first clamping device and a second clamping device; and multi-angle measuring can be achieved, vibration and shaking of the steel pipe can be reduced, and a bearing plate is arranged, so that the steel pipe is placed more stably and is more accurately measured, error generation is reduced, and the steel pipe measuring effect is better.

The invention provides a large-size light guide plate with a lens array and a processing method thereof. The light guide plate comprises a light incident surface and the lens array. A mode of staggered connection of multiple arc grooves and multiple arc columns is formed by the lens arrays through laser fusion processing. When laser light beams impact the light incident surface, one of the arc grooves is formed and fusion material is generated. Continuous parallel shift laser light beams impact again so that another arc groove is formed. The fusion material accumulates between the adjacent arc grooves and forms the arc columns after cooling. The impact conditions are defined as that the radius of each arc groove is 35-50 microns, and the molding conditions are that the radius of each arc column is 25-40 microns after fusion cooling. The laser light beams continuously impact repeatedly until the lens array is formed. Processing time can be greatly reduced through laser processing so as to achieve the objective of mass production. Meanwhile, the lens array of the concave-convex arc connection mode can be accurately obtained.

The present invention provides a method and device for multi-shaft coupling moment balance control based on position synchronization. The method comprises the following steps: controlling a main shaft and a slave shaft to perform synchronous operation through the given value of the same position; determining the given value of an additional position according to the moment deviation values of the main shaft and the slave shift; and regulating the moment equalization of the main shaft and the slave shaft based on the given value of the additional position. The method and device for multi-shaft coupling moment balance control based on position synchronization can ensure the position synchronization and the moment equalization of the main shaft and the slave shift based on position synchronization control, and are suitable for and include but not limited to the machinery coupling conditions of pure rigid connection, pure flexible connection and semi-rigid connection.

The invention discloses a pipe grinding device comprising a feeding device, a supporting device, a grinding device and a measuring device, wherein the supporting device is located at the discharging end of the feeding device; the grinding device is located above the supporting device; and the measuring device is located at the discharging end of the grinding device. Automatic feeding is realized through the feeding device; due to the adoption of a supporting mechanism with an adjusting function, the pipe grinding device is simple in structure and convenient to operate, and an adjustable effect is achieved; due to the arrangement of a lifting device, the whole grinding head mechanism not only can vertically move, but also can horizontally move, and service restrictions are avoided; the measuring device used after grinding is provided with a first clamping device, so that a steel pipe can rotate when being clamped, multi-angle measurement can be realized, and the vibration and shake of the steel pipe are reduced; and due to the arrangement of a bearing plate, the steel pipe is more stable and is more accurately measured, errors are reduced, and the steel pipe measuring effect is better.

The invention provides a sealing double-layer heat reflection hollow glass. The sealing double-layer heat reflection hollow glass comprises an outer-layer glass body, a sealing adhesive piece, an inner-layer glass body, an aluminum strip and a hollow layer. The hollow layer formed through aluminum strip partition is arranged between the outer-layer glass body and the inner-layer glass body. The outer-layer glass body is mirror glass and stored outside the sealing double-layer heat reflection hollow glass. The sealing adhesive piece is stored outside the aluminum strip and seals the outer-layer glass body and the inner-layer glass body. The aluminum strip is stored between the outer-layer glass body and the inner-layer glass body and inside the sealing adhesive piece. The outer-layer glass body and the inner-layer glass body are connected through the adhesive piece in a sealed mode. According to the sealing double-layer heat reflection hollow glass, metal-plating oxide thin film mirror glass is adopted so that infrared rays can be better reflected; a drying agent is stored in the hollow aluminum strip, so that the large humidity caused due to the fact that the inner and outer temperatures of the double-layer glass are not even is prevented, and a better heat insulation effect is achieved; through the adhesive piece, uneven distribution of traditional glue is solved; and through an outermost sealing protecting bush, airtightness of the double-layer glass is further improved, and the most fragile corners of the double-layer glass are protected.

The invention relates to a spiral type leaf throwing roller for a wind separating warehouse. The spiral type leaf throwing roller comprises a plurality of blades, a roller cylinder and a shaft; the multiple blades are arranged on the outer circumferential surface of the roller cylinder, and the shaft is arranged at the position of the central axis of the roller cylinder in a penetrating mode; themultiple blades are arranged in the direction of spiral lines of the roller cylinder in sequence, the spiral lines, treating the midpoint of the roller cylinder as a boundary, rotate leftward from oneend of the roller cylinder and rotate right ward in the opposite direction from the other end of the roller cylinder, and the spiral lines intersect to one point at the midpoint of the roller cylinder; and the multiple blades rotate leftward along the spiral lines at the end of the roller cylinder, and rotate rightward along the spiral lines at the other end of the roller cylinder. According to the spiral type leaf throwing roller for the wind separating warehouse, the leaf throwing roller is of a hollow structure and has low weight, and the load of a driving motor is reduced; and in addition, the positions of thrown materials can be more uniform, the wind separating effect is improved, and the leaf containing rate in stalks is reduced.

The invention discloses greenhouse planting warm air equipment for seedling raising and heating and an operation method thereof. The equipment comprises a supporting platform, sleeving discs, extending platforms and supporting rods, wherein the supporting platform is obliquely arranged, and the sleeving discs sleeve the supporting platform. The equipment has the advantages that the equipment movably blows warm air into a greenhouse, so that the coverage of an area into which the warm air is blown in the greenhouse is more uniform and comprehensive, the heating quality of the equipment for the greenhouse is improved, the working automation degree of the equipment is higher at the same time, and time and labor are saved when the equipment is used. The sleeving discs are connected into screw holes in the two ends of each mounting ring through the bottoms of two screw bolts respectively, the sleeving discs and the supporting platform are connected during mounting, and it is ensured that people can mount any sleeving disc of different sizes to heat greenhouses according to the actual heating demands of the greenhouses different in area, so that the use flexibility is guaranteed.

The invention discloses a composite aerated brick material and a brick production process thereof, which belong to the technical field of building bricks. The composite aerated brick material disclosed by the invention comprises fly ash, lime powder, and cement, and further comprises modified foaming powder, and the proportion of all the components is: fly ash : lime powder : cement : modified foaming powder equal to (70 to 75):(20 to 25):(5 to 8):(1 to 2); and the modified foaming powder consists of cement, starch, and aluminium powder, the weight ratio of which is (7 to 9):(4 to 6):(1 to 2). After the cement, the starch and the aluminium powder are mixed, the starch can adsorptively position the aluminium powder, the density of the starch and the aluminium powder is then neutralized by the cement, the layering of the thee is delayed in the subsequent stirring and pouring, the three cannot be layered as well in the process of quiescence for pre-curing, consequently, the objective of stable aeration position and uniform produced hole size is achieved, moreover, the unexpected technical effect of easy demoulding is also achieved, and the problem that the brushing of coating is affected by the demoulding agent of the surface of aerated bricks is also prevented.

The invention provides a negative ion formaldehyde-removing odor-removing aqueous solution and a preparation method thereof, and relates to the technical field of production and manufacturing of environment-friendly coatings. The negative ion formaldehyde-removing odor-removing aqueous solution comprises 30-50 parts of ammonium bicarbonate, 15-20 parts of sepiolite, 50-65 parts of deionized water,5-8 parts of calcium stearate, 6-10 parts of color-changing powder, 10-15 parts of a thickening agent and 10-15 parts of a tackifier, the thickening agent is a cellulose thickener, the tackifier is water-based tackifying resin, and the color-changing powder is a conventional pigment and can be specifically prepared according to customer indoor decoration colors. The formaldehyde removing agent disclosed by the invention forms a thin film after being coated on a wall surface, the coating wall surface can be sealed through the film, volatilization of formaldehyde in the wall body is avoided, substances such as ammonium bicarbonate, sepiolite and the like can adsorb formic acid during sealing, the purpose of removing formaldehyde is achieved, and the formaldehyde removing agent can be blended according to the color of the wall body. Wall attractiveness is unaffected.