231results about How to "Optimal Design Structure" patented technology

The invention relates to the field of cooking equipment and discloses an electric pressure cooker and a control method for the same. The electric pressure cooker comprises a pressure detection switch, a second coil, an oscillating circuit, an oscillating circuit parameter detection circuit and a control circuit, wherein the second coil is in a parallel connection with the pressure detection switch; mutual inductance effects can be generated between the first coil in the oscillating circuit and the second coil; the oscillating circuit parameter detection circuit is used to detect oscillating circuit parameters of the oscillating circuit; and the control circuit determines whether a pressure in the electric pressure cooker reaches a preset value according to the detected oscillating circuit parameters. The electric pressure cooker and the method provided by the invention have the advantages that a layout position of the pressure detection switch in the electric pressure cooker will not be limited, so that structural design and structural optimization of the electric pressure cooker can be implemented easily.

Exemplary embodiments of the present invention are directed to methods and program products for optimizing clustering of a design structure matrix. An embodiment of the present invention includes the steps of using a genetic operator to achieve an optimal clustering of a design structure matrix model. Other exemplary embodiments of the invention leverage the optimal clustering by applying a genetic operator on a module-specific basis.

A multi cyclone dust separating apparatus including a first cyclone and a second cyclone having a plurality of cyclones formed on an outer side of the first cyclone. The first cyclone includes a first cyclone chamber centrifugally separating dust from air, a chamber outer wall, a first inlet and a first outlet forming the first cyclone chamber. The second cyclone unit includes a plurality of cyclones arranged along an outer circumference of the first chamber outer wall, and having a second cyclone chamber centrifugally separating minute dusts from air drawn in from the first cyclone unit, a second chamber outer wall forming the second cyclone chamber, second inlet, and a second outlet. The second inlet of each second cyclone of the second cyclone unit is lower than the first inlet of the first cyclone unit and freely settable.

The invention discloses a multilevel multitask parallel decoding algorithm on a multicore processor platform, and provides the multilevel multitask parallel decoding algorithm for effective combination of tasks and data on the multicore processor platform by utilizing the dependency of HEVC data by aiming at the problems of mass data volume of high-definition videos and ultrahigh processing complexity of HEVC decoding. HEVC decoding is divided into two tasks of frame layer entropy decoding and CTU layer data decoding which are processed in parallel by using different granularity; the entropy decoding task is processed in parallel in a frame level mode; the CTU data decoding task is processed in parallel in a CTU data line mode; and each task is performed by an independent thread and bound to an independent core to operate so that the parallel computing performance of a multicore processor can be fully utilized, and real-time parallel decoding of HEVC full high-definition single code stream using no parallel coding technology can be realized. Compared with serial decoding, the decoding parallel acceleration rate can be greatly enhanced and the decoding image quality can be guaranteed by using the multicore parallel algorithm.

The invention provides a design method of a power battery temperature control system, which comprises: (1) constructing a geometric model of power battery box body thermal simulation calculation; (2) using cycle working conditions of a power battery box body in different working modes as inputs, and obtaining a thermal simulation calculation model of the power battery box body; (3) analyzing an inconsistency condition of temperature distribution among power battery modules and unevenness of surface flow of a power battery; (4) carrying out optimization design on structural design and flow field design of the battery modules; (5) determining a power battery temperature control mode and a protection method; (6) increasing a heating power parameter of a battery heater which meets a battery low-temperature heating requirement, and carrying out analysis calculation again; and (7) judging whether a temperature control requirement of the power battery box is met, completing design if the temperature control requirement of the power battery box is met, and if the temperature control requirement of the power battery box is not met, transferring to the step 4. The design method has the characteristics of high reliability, high practicality and the like. The invention also simultaneously provides a power battery temperature control system.

The invention discloses a real-time performance test method of an embedded system, which is used to solve the technical problems of poor precision of an existing real-time performance test method of embedded system. A real-time basic index, a multi-core index and a division index are incorporated into the real-time performance test to realize microsecond time acquisition through a direct hardware access mechanism, and the problems in the existing performance test algorithm of the indexes are solved. Because real-time performance index architecture of the embedded system is adapted, more comprehensive real-time performance data of the embedded system can be obtained. The real-time performance test method provides performance improvement direction for the existing embedded system so as to promote the design of embedded system structure and the selection of hardware and software to improve the availability of the embedded system. At the performance test phase, relative algorithms about the embedded real-time performance are improved with hardware time acquisition method, the complexity of the algorithms is reduced, and the accuracy of the test results is improved with the real-time test accuracy of 10-6 level.

The invention relates to a lens installing and positioning device in a cold optical technology, and relates to the field of low-temperature infrared. The lens installing and positioning device comprises a main lens cone, two lenses, a tetrafluoroethylene cushion, fine-thread adjusting screws, a mirror spacer ring, a lens pressing ring, pressure springs, pressing screws and a pressing cover. The first lens is positioned through cooperation of an oblique face at the front end of the main lens cone and an oblique face of the first lens, optical spacing between the first lens and the second lens is guaranteed through the mirror spacer ring, the mirror spacer ring is in oblique face fit with the two lenses, the second lens is pressed through the lens pressing ring, pressing force between the second lens and the lens pressing ring is realized through the pressure springs, connection between the pressing screws and the main lens cone is used for adjusting the pressing force, and the pressing cover plays a protective role. The lens installing and positioning device solves the problem of lens installing and fixing within a large temperature change range, can adapt to thermal deformation of the lenses and a supporting structure thereof within a large temperature change range, and guarantees that the lenses are not damaged irrecoverably while surface shape precision of lens surfaces is guaranteed.

A carbon fiber toughened carbon-silicon carbide based composition with high thermal expansion match performance, low-temp antioxidizing performance, toughness and purity features that its reinforcing phase is carbon fiber, its basic body phase is the alternatively laminated 2-5 carbon-silicon carbide layers, and its external layer is silicon carbide for high antioxidizing performance. Its preparing process is sequential impregnation and thermodecomposing of boronphenolic aldehyde and polycarbonsilane.

The invention discloses a polyimide-based sandwich-structure wave absorbing material which is of a multifunctional superimposed structure. The polyimide-based sandwich-structure wave absorbing material sequentially comprises a first medium layer, an absorbing layer, a second medium layer and a reflection layer; both the first medium layer and the second medium layer are formed by a quartz fiber reinforced polyimide resin-based composite material, the absorbing layer is formed by a continuous silicon carbide fiber reinforced polyimide resin-based composite material, and the reflection layer is a conducting silver coating. The preparation method comprises the following steps: respectively smearing a polyimide solution onto quartz fiber cloth and silicon carbide fiber cloth to form prepreg; sequentially laying each prepreg in a mould according to the laying sequence and the thickness of each layer, preparing the composite materials by utilizing a thermal molding process, and then thermally treating the composite materials; and finally smearing the conducting silver pulp, and drying to obtain the polyimide-based sandwich-structure wave absorbing material. The polyimide-based sandwich-structure wave absorbing material is high in temperature resisting grade and can resist the high temperature of 350 DEG C or higher; and moreover, the mechanical and wave absorption performances are still excellent under the condition of 350 DEG C.

The invention discloses a member-insertion type aluminum-alloy truss structure with plate gussets. The truss structure comprises a gusset plate, and aluminum-alloy truss web members and a chord member which are connected with the gusset plate. The truss structure is characterized in that: the gusset plate is provided with two grooves, wherein one groove is used for the insertion and connection of the chord member, while the other is used for the insertion and connection of the web members. The chord member is connected with the gusset plate by bolts or rivets, and the web members are also connected with the gusset plate by the bolts or the rivets, so that the gusset plate is connected with the aluminum-alloy members in a transverse direction, a vertical direction and an inclined direction to form the aluminum-alloy truss structure with the characteristics of rational stressing, reliable structure and convenient design, manufacture and construction. The aluminum-alloy truss structure of the invention has the characteristics of reliable connection, simple structure and convenient manufacture and construction.

The invention relates to a building method of a gallium arsenide field-effect tube (GaAs FET) temperature influence model. The method comprises the following steps of: 1, building an equivalent circuit diagram capable of reflecting a GaAs FET physical structure; 2, determining the relationship between an equivalent circuit model element and the physical structure; 3, studying and determining the temperature influence physical mechanism of the model element; 4, building the function relationship between the model element and the temperature; 5, realizing the GaAs FET equivalent circuit model in microwave electronic design automation (EDA) software; and 6, simulating the GaAs FET critical performance parameter change relationship along with the temperature. The building method can simulate the relationship between the GaAs FET performance parameters and the physical structure, the temperature influence on the GaAs FET performance parameters can be predicted, and the structure design and technological parameter optimization can be conveniently performed by device design personnel. The building method has a better practical value and a good application prospect in the microelectronic technical field.

The invention provides a comfortable and health-care book-reading frame, comprising a book supporter and a book retainer which is arranged at the middle part of the book supporter, extends externally along the plane where the book supporter is arranged and is convex upwards vertically; the book supporter is provided with a sliding hanging trough which extends to the left side and right side of the book supporter; the left position and the right position inside the sliding hanging trough are respectively provided with a sliding hanging block which can slide to the left side and the right side; the sliding hanging block is connected with a book end handle; the book end or the sliding hanging block is connected with a spring device which is connected with a book plywood; the book-reading frame is also provided with another structure which comprises a sliding hanging rod which is taken as a book supporter and a book retainer which extends out of the plane where the sliding hanging rod is arranged and is convex upwards vertically; the sliding hanging rod is provided with two book ends which can slide to the left side and the right side along the sliding hanging rod; the book-reading frame can adjust the readings of various size and thickness to a distance, an angle and a visible angle suitable for book reading; the book-reading frame has scientific design, simple structure, low cost, full function, convenient usage, reliable quality, easy generalization, and is a comfortable and health-caring book reading device which is necessary for book reading of book readers (more especially the students) at home and in schools.

The invention relates to the technical field of design and manufacture of hydro-cyclones, in particular to a numerical simulation and optimization method for parameters of solid-solid separation hydro-cyclones. The method mainly comprises the following operation steps: determining the basic diameter of a hydro-cyclone; determining other structural parameters of the hydro-cyclone; designing a quadratic orthogonal rotation combinative test scheme; carrying out numerical simulation and test optimization on operation parameters; designing an orthogonal test scheme; carrying out numerical simulation and test optimization on the structural parameters. In order to overcome the disadvantages and defects in the prior art, the invention provides a method for carrying out multivariable multi-target parameter optimization on the operation parameters and structural parameters of the solid-solid separation hydro-cyclones by taking separation performance of the hydro-cyclones as target, so as to simply, economically and efficiently realize the parameter optimization of the hydro-cyclones, remarkably improve the separation performance of the hydro-cyclones, improve the production efficiency, reduce the production cost and improve the product quality.

The invention relates to a self-locking type overturning high-pressure forming machine. The self-locking type overturning high-pressure forming machine which comprises a main rack, a die trolley A, a die trolley B, a middle base plate, a tail end base plate, a self-locking mechanism, an overturning mechanism, a die opening and closing mechanism, a mud pressurizing mechanism, a hydraulic device, a pressure sensor and a control device, wherein the main rack is used for overall mechanism carrying, the die trolley A and the die trolley B are used for carrying a die for moving, the middle base plate and the tail end base plate are used for fixing a main machine base plate of the die, the self-locking mechanism is used for self locking of the die, the overturning mechanism is used for overturning the die, the die opening and closing mechanism is used for opening and closing the die, the mud pressurizing mechanism is used for pressurizing mud, and the hydraulic device is used for providing hydraulic power for the self-locking mechanism. According to the self-locking type overturning high-pressure forming machine, automatic die opening and closing are conducted, die releasing is conducted in an overturning and unified manner, and the equipment comprehensive running efficiency is improved; and the self-locking mechanism is adopted, the structure is simple, use is convenient, and consumption of manpower, material resources and financial resources can be effectively reduced.

The invention relates to a broadband absorbing material based on a frequency selective surface and sandwich structure design and a preparation method thereof. On the basis of combination of a frequency selective surface and a sandwich structure, the advantage of widening the absorbing band of the frequency selective surface is utilized and the frequency selective surface is protected from being corroded by a high-temperature aerobic environment. According to different environmental usage requirements like the temperature or bearing requirement, different dielectric layer materials are selectedpreferably and the corresponding preparation processes are optimized, so that the application field of the absorbing material is widened. Besides, the intermediate electromagnetic wave loss layer isa frequency selective surface film based on multi-loss-mechanism coordination with compatibility of conductivity losses and polarization losses instead of the traditional frequency selective surface.On the basis of the macro-scale structural design and micro-scale frequency selective surface film optimization and regulation, the frequency width of the reflection loss <-10dB of the material is 8 to 18 GHz. Moreover, the preparation method of the broadband absorbing material is simple and has high designability; the performances are stable; the applicability is high; and the broadband absorbingmaterial and the preparation method thereof have the development prospects.

The invention discloses a truck dynamic modeling method based on transfer matrixes. The method comprises the steps of establishing transfer matrixes of dynamic elements in a truck dynamic model; carrying out reasonable assumption on a truck, thereby obtaining a rigid-flexible coupled dynamic model with truck features; on the basis of a transfer matrix method theory, determining truck element serial numbers, transmission directions and cutting locations; modularly establishing a transfer matrix method of the truck, scattering the elements in each module, establishing sub-module transfer matrixes, obtaining a total transfer matrix of the truck dynamic model through splicing, and establishing the truck dynamic model; and in a frequency domain, through road surface spectrum input, and carryingout inherent characteristic and dynamic characteristic analysis on the established model according to a random vibration theory. According to the method provided by the invention, the modeling efficiency and accuracy and a code reuse rate are improved, and the theoretical basis for truck ride comfort analysis is provided.

The invention relates to the field of a battery, and in particular relates to an AA hydro-energy battery. The AA hydro-energy battery comprises a copper barrel shell, a magnesium bar and electrolyte, wherein the magnesium bar is arranged in the center of the copper barrel shell, the electrolyte is filled between the copper barrel shell and the magnesium bar, and the positive copper barrel shell, the negative magnesium bar and the negative electrolyte form a battery combination; the electrolyte consists of a solid mixture and water which is injected in use, and the solid mixture consists of the following components by weight percent: 35 to 45 percent of manganese dioxide, 15 to 25 percent of copper powder and 30 to 40 percent of exquisite carbon powder. The AA hydro-energy battery has the advantages of good environmental friendliness, optimized electrolyte formula, optimized battery combination, optimized structure design, large capacity, small internal resistance, high efficiency, repeatability in use after the water is charged into the battery, long service life and high cost performance.

The invention discloses a two-freedom-degree hybrid stepping motor for bionic eyeballs of a robot. The stepping motor comprises a first freedom degree motor, a second freedom degree motor and output shafts, wherein the first freedom degree motor is of a circular structure with a notch, the second freedom degree motor is of a circular structure with an opening, the notch is matched with the opening, and the planes of the two motors are perpendicularly orthogonal; the first freedom degree motor and the second freedom degree motor both comprise stators and rotors, the stators and the rotors can relatively move in the planes of the motors, and the two-freedom-degree movement of the output shaft of one freedom degree motor can be achieved through respective independent movement of the two freedom degree motors. The two-freedom-degree hybrid stepping motor has the advantages of being simple in structure and manufacture technology, convenient in analysis design, high in mechanical integration level, high in open-loop operation location accuracy, easy in performance experiment test and favorable for shortening the development period of products and improving the performance and the competitiveness of the products.

The invention provides a method of preparing a Ni-Co nano compound multi-layered alloy. The method comprises the following steps of: S1, preparing a Ni-Co nano compound electrolyte; and S2, putting a plating article in the Ni-Co nano compound electrolyte, performing electrodeposition by means of a three current cyclic step change method, taking out the plating article after electrodeposition, washing the plating article thoroughly and naturally airing the plating article. According to the method of preparing the Ni-Co nano compound multi-layered alloy provided by the invention, the obtained plating layer is a multi-layered structure. Nanoparticles are uniformly dispersed, and the invention provides a novel method for electrodepositing preparation of the corrosion-resistant wear-resistant compound multi-layered alloy.

The invention discloses a detecting and sorting machine for SOT packaged products. The detecting and sorting machine comprises a working table, wherein an anticlockwise ring-shaped station is arrangedon the table board of the working table; functional mechanism modules such as a loading mechanism, a coding mechanism, a tri-polishing receiving mechanism and a collecting packaging mechanism are mounted on the ring-shaped station; a cantilever is arranged above the table board of the working table; one end of the cantilever is connected with a cantilever supporting column mounted on the side surface of the working table; the other end of the cantilever is connected with an absorbing and discharging rotary tower; a material supply mechanism is arranged at one side of the working table; an industrial-control computer and an electrical control module are arranged in a rack of the working table; and an equipment operating monitoring module is arranged on the cantilever supporting column. Thedetecting and sorting machine can efficiently perform checking and sorting on product pins, performance and printing effect at high speed, also very has very strong compatibility on products of different packaging types, can meet modern automatic and high-speed detecting sorting needs, and has a novel structure design much better than that of existing equipment of the market in processing and assembly precision, assembly speed and later-stage maintenance.