34results about How to "Rich design method" patented technology

The invention discloses a method for mutual communication between an AXI bus and an AHB bus, which mainly completes the read and write operations between the AXI bus and the AHB bus to realize the communication between the two. After the AXI bus master sends a read and write request, the AXI bus and AHB bus communication bridge latches the read and write address, and keeps the address valid during the transmission process, including the latch of the read and write control signals; then the AXI bus communicates with the AHB bus The bridge decodes the latched address and generates a selection signal. Only one selection signal can be activated during the transmission process, that is, the only AHB slave device is selected for read and write operations; during the write operation, the AXI bus and The AHB bus communication bridge is responsible for sending the data from the AXI bus to the AHB bus through the data buffer; during the read operation, the AXI bus and AHB bus communication bridge is responsible for sending the data on the AHB bus to the AXI bus through the data buffer.

The invention discloses an oil film lubrication method for thrust bearing tapered rollers and seat ring ribs. Rolling bearings involved in mechanical transmission. The invention aims at the mixed friction state between the large end face of the tapered roller and the inner surface of the rib of the seat ring in the rolling bearing, making it a pure liquid friction of oil film lubrication, thereby improving the overall performance of the bearing. In the present invention, a wedge-shaped gap is formed between the large end surface of the roller and the inner wall of the raceway rib, and filled with lubricating oil. When the shape and size of the gap match the axial load, sliding speed, and viscosity of the lubricating oil, the A hydrodynamic oil film is formed between the two surfaces. The wedge-shaped gap is formed between the large end surface of the tapered rolling ball and the spherical ring of the rib of the seat ring. Reasonable selection of the spherical radius SRQ of the inner surface of the rib of the seat ring and the shaft ring and the spherical radius srq of the large end surface of the tapered rolling can make The wedge-shaped gap is easier to form a dynamic pressure oil film. The invention has the advantages of reducing friction coefficient, improving transmission efficiency, reducing energy consumption, improving bearing capacity and reliability of bearings, and the like.

The invention provides a control method and a device for a flywheel energy storage system. The method comprises the steps of a, with the angular velocity, the d-axis current and the q-axis current of A, a flywheel as state variables, and the energy storage capacity of the flywheel as a control variable, constructing a model for the energy storage system of the flywheel, and discretizing the model according to the sampling time; B, constructing a performance index based on a second-order Renyi entropy, and determining an optimal input control variable increment with the partial derivative of the input control variable increment to be zero based on the performance index; C, determining a current optimal input control variable based on the optimal input control variable increment. According to the control method and device, based on the simplified energy storage model of the flywheel, a controller for the energy storage system of the flywheel can be designed. Meanwhile, the excess energy of the flywheel is stored, or the deficient energy of the flywheel is supplemented. In this way, a wind turbine generator set is ensured to transmit a smoothing power to the power grid.

The invention relates to a Marshall design method of an Evotherm warm-mix asphalt mixture, comprising the following steps: (1) selecting a Marshall design method of a warm-mix asphalt mixture to design the graduation and oil-stone ratio of the warm-mix mixture; (2) selecting aggregates with different temperatures, conducting a rutting test on the selected aggregates with different temperatures and an asphalt with same temperature of the warm-mix asphalt, and determining the discharge temperature and compaction temperature of the warm-mix asphalt with the bulk density of a test piece of the warm-mix asphalt as a standard; and (3) conducting a high temperature test, a low temperature test, and a water stability test of the warm-mix asphalt at the temperatures, and evaluating by taking technical indexes of the warm-mix asphalt of the same type. According to the invention, the warm-mix asphalt mixture can be designed without a gyratory compactor, the bulk density of the warm-mix asphalt mixture is represented as the core sample density of the rutting plate drilled core, and the technical indexes of the warm-mix asphalt of the same type are taken as the performance index for evaluation; and the design method is simple and reasonable and is convenient for laboratories and field laboratories without the gyratory compactor, thus the design method of the warm-mix asphalt mixture is expanded.

The invention relates to a fit raglan sleeve model design and manufacturing method, which comprises the following steps: building a mathematical model between the inclination angle and body and sleeve intersection and the static elegance, dynamic comfort and static and dynamic elegance and fit of the raglan sleeve; preparing a rear garment piece model, determining shoulder width, a post 1 / 4 chest width point, a waistline and a post central line and well collecting the dart of the rear piece; and determining the value of the inclination angle of the rear sleeve, the length of the sleeve and cuff; determining the intersection of the rear garment body and the garment piece, drawing a tangent line, which passes through the intersection, of a rear arm hole line, drawing a muscle line which is symmetric with the rear arm hole line below the intersection about the tangent line, and determining sleeve cap height; preparing a front garment piece model, determining the shoulder width, a front 1 / 4 chest width point, the waistline and the width of front over lap, and collecting a chest dart and a waist dart; drawing a front sleeve central line, sleeve length and cuff; and drawing a vertical line of the sleeve central line according the sleeve cap height of the rear piece, determining a point, which a tangent line serving as a symmetric axis of the front chest width point and a point on the vertical line passes through, on the front armhole curve, determining sleeve width and well drawing a front sleeve piece. The fit raglan sleeve model design and manufacturing method facilitates flexible structural design of garments.

Embodiments of the present invention provide a design method and device for an air-cooled exhaust pipe arranged at a high position of a steam turbine, belonging to the field of electric power technology. The equipment at both ends of the air-cooled exhaust pipeline is a steam turbine and an air-cooled condenser at the high position of the turbine room and the air-cooled island, respectively, and the design method of the air-cooled exhaust pipeline includes: determining that the turbine room and the air-cooled island are relatively Based on the yaw direction of the air-cooled exhaust pipe; obtain the yaw data of the steam turbine and the air-cooled condenser respectively relative to the height of the turbine room and the air-cooled island; combine the yaw direction and the The deflection data determines the deflection condition for the air-cooled exhaust pipe; and performs a pipeline design analysis of the air-cooled exhaust pipeline based on the deflection condition. The invention fills up the gap in the deflection calculation of the air-cooled exhaust pipe arranged at the high position of the steam turbine, optimizes the overall design process of the air-cooled exhaust pipe arranged at the high position of the steam turbine, and improves the safety and reliability of the design of the exhaust pipe.

A prestressed assembly type steel frame friction damping structure system and a design method thereof comprise at least two layers of steel frame structures, wherein adjacent steel frame structures are disconnected at the joint of an upper-layer column and a lower-layer floor slab; the adjacent steel frame structures are connected in a sliding manner through a bidirectional sliding friction connecting device; the bidirectional sliding friction connecting device comprises an upper C-shaped plate, a lower C-shaped plate, a friction plate and a connecting piece; the plate surface of the upper C-shaped plate is provided with a first transverse strip hole; the plate surface of the lower C-shaped plate is provided with a first longitudinal strip hole; the upper C-shaped plate and the lower C-shaped plate are mutually inserted and connected with the connecting pieces in the corresponding first longitudinal strip holes through the first transverse strip holes; the upper C-shaped plate is connected with a bottom connecting plate; the lower C-shaped plate is connected with a top connecting plate; and friction plates are arranged between a first top plate and a second top plate, between a second top plate and a first bottom plate and between the first bottom plate and a second bottom plate. The prestressed assembly type steel frame friction damping structure system solves the technical problems of poor energy consumption performance and difficult construction of connecting joints of the traditional assembly type structural steel column connecting structure.

The invention relates to a noise suppression method and a noise suppression device based on Gaussian distribution weighting. The noise suppression method comprises the steps of determining the local radius of a filter; determining a window length of the filter according to the local radius of the filter, and determining discrete signals in the window of the filter; determining corresponding mean values and variances according to the discrete signals in the window of the filter; determining a Gaussian function of the discrete signals in the window of the filter by using the mean values and the variances; determining the corresponding Gaussian function value of each discrete signal in the window of the filter by using the Gaussian function, and performing summation of the obtained Gaussian function values; determining the corresponding weighted value of each discrete signal in the window of the filter by using the corresponding Gaussian function value of each discrete signal in the window of the filter and the sum of the Gaussian function values; and performing noise suppression treatment on the discrete signals at the center of the window by using the weighted values by the filter.

The invention relates to the technical field of structural engineering, and discloses a prestressed support friction damping assembled steel structure system and a design method. The system is formedby stacking layered frame structures up and down, each layered frame structure includes steel columns, steel beams and floor plates, the steel columns between the upper and lower adjacent layered frame structures are disconnected at the connection positions of the floor plates on the lower layer, connection through self friction is achieved, and meanwhile, high-strength cables are connected between the adjacent layered frame structures; and the top ends of the steel columns are provided with upper flange plates so as to be fixedly connected to the steel beams, the bottom ends of the steel columns are provided with lower flange plates, the lower flange plates are in contact with the upper surfaces of the floor plates of the adjacent layered frame structure on the lower layer, the upper surfaces of the floor plates are provided with friction coating layers and limiting devices, and the limiting devices are steel plate strips arranged along the edges of the floor plates. By means of the system, the layers are connected through the high-strength cables and the mutual friction between the columns, construction is convenient and efficient to achieve, and the stress performance is good.

The invention discloses a method for presenting a three-dimensional pattern on clothing. The method comprises the following steps of: processing a self-selection picture by using Photoshop software to acquire Mask and Texture, importing into three-dimensional image making software 3Dmrc, and synthesizing to generate a three-dimensional image; inputting the made three-dimensional pattern into a computer in a digital mode; compiling and processing by using a printing, color separation and drawing system of the computer; selecting different dye solutions according to a fabric to be dyed; and controlling a micro piezoelectric type ink-jet nozzle by using the computer to directly eject a special dye solution onto the fabric or a garment so as to form the fabric or the clothing on which the three-dimensional pattern can be presented. By the method, a three-dimensional pattern design technology and a digital printing technology are combined organically, so that a three-dimensional imaging technology is applied in the designing and processing of the clothing, the clothing has attractive patterns, underlying three-dimensional patterns, interestingness and artistic quality, and clothing designing and processing methods are enriched.