367 results about "Quality by Design" patented technology

A case of a mobile terminal includes a user input unit, a controller for manipulating an input signal, an interface for transmitting the manipulated input signal and protects a mobile terminal. As the case of the mobile terminal provides an additional user input, this allows a user to control each function of the mobile terminal with user friendly manner, or to input data efficiently, and to improve a design quality of the mobile terminal

A case of a mobile terminal includes a user input unit, a controller for manipulating an input signal, an interface for transmitting the manipulated input signal and protects a mobile terminal. As the case of the mobile terminal provides an additional user input, this allows a user to control each function of the mobile terminal with user friendly manner, or to input data efficiently, and to improve a design quality of the mobile terminal.

A method is for establishing a nuclear reactor core loading pattern (LP) for fuel assemblies and burnable absorbers (BAs). The method establishes an optimum LP through the steps of: a) providing nuclear data representing fuel assemblies and BAs in a nuclear reactor core; b) depleting the nuclear data to form a reference core depletion; c) incorporating the nuclear data into a system of linear equations of a nuclear design quality flux solution method; d) defining the system of linear equations to include constraints which accurately represent the neutron physics of the reactor; employing the equations as a constraint matrix for a MIP solver to find an optimum core pattern solution; f) repeating steps b) through e) updating the constraints and objective functions to satisfy specified engineering requirements and establish an optimum core loading pattern. An algorithm for deriving the system of equations is also disclosed.

The invention discloses an underground comprehensive pipe gallery information management method based on BIM and GIS technologies. The method comprises the following steps of S1, acquiring an underground comprehensive pipe gallery design drawing and urban basic geographic information data; S2, making an underground comprehensive pipe gallery BIM modeling standard; S3, making a comprehensive pipe-gallery two-dimensional GIS layer file; S4, constructing an underground comprehensive pipe gallery BIM model; S5, according to a B / S network configuration, establishing an underground comprehensive pipe gallery information management platform based on the BIM and the GIS; and S6, through a mutual index relation of BIM and GIS data, carrying out space layout configuration, and simultaneously displaying an underground comprehensive pipe-gallery two-dimensional GIS model and a three-dimensional BIM model. In the invention, a GIS technology and a BIM technology are combined and are applied to comprehensive pipe gallery engineering so that design and operation management persons can carry out multiple-dimension analysis, multi-view space verification and visualization management on underground comprehensive pipe gallery correlation information in a three-dimensional on-site environment. Management efficiency, design quality and operation quality can be increased.

The invention discloses a low-noise design method of a centrifugal pump with low specific speed, and relates to an active control method of flow noise of turbomachinery. The design method comprises the steps that firstly, main structural dimensions of a centrifugal pump impeller and a helical pumping chamber (volute) are obtained by the traditional low-specific-speed pump design method; secondly, an internal flow field of the pump is computed by a computational fluid mechanics method; the performance of the pump is predicted whether to meet a design requirement; an optimum design improvement is performed by analyzing a stationary flow field; thirdly, flow induction noise of the pump with low specific speed is predicted by a computational acoustics method; if a flow noise index is qualified, the design is accomplished; if the flow noise index is disqualified, subsequent steps are performed; fourthly, the diameter of the impeller basically meeting a performance requirement in the design is adjusted to allow a gap between the impeller and a volute tongue to be increased continuously to 20%; splitter blades are added in the middles of blades to increase the lift, control the flow situation, and ensure the efficiency; and finally, the pump subjected to the impeller improvement design is subjected to noise prediction; if the flow noise index is qualified, the design is accomplished; and if the flow noise index is disqualified, the beginning step is repeated. The design method shortens the research and development period, saves the development cost, effectively improves the design quality of the centrifugal pump, can simultaneously meet low-noise requirements of the lift and the efficiency, and realizes optimization of the performance of the complete centrifugal pump with low specific speed.

There are provided a bracket 3 that has a frame section 11 integrally formed by a transparent material, an apparatus mounting section 12 disposed in an inner peripheral edge of the frame section, and parts fixing sections 13, 13, . . . disposed on the outside of the frame section; a front panel 2 that is formed by a transparent material and disposed on the front surface side of the bracket; an apparatus body section 4 that has a screen surface 4a and is mounted at the apparatus mounting section of the bracket; holding members 31, 31 that hold the front panel and the bracket in the state that they are connected together at the front and rear; and functional sections that are fixed to the parts fixing sections of the bracket so as to be disposed on the outside of the front panel, and that sends and receives electric signals to exhibit a predetermined function. Signal paths 35, 35 to perform sending and receiving of electric signals between the apparatus body section and the functional sections are formed in the inside of the bracket or in a boundary portion between the front panel and the bracket. This enables sending and receiving of electric signals between the apparatus body section and the functional sections that send and receive electric signals to exhibit a predetermined function, while maintaining good design quality.

The invention discloses a lofting production method of an anchor recess of a planking thickness line of a hull. The lofting production method comprises the following steps: (1) line type lofting of an anchor recess region adopts a method of deducting the planking thickness line of the hull; (2) the line type of the anchor recess takes an A-A section of a center line of a hawse pipe as a reference, and projection is carried out on a three-directional line type deducting the planking thickness; (3) the protection of a section of an anchor mouth takes a 7# section and a 3# section of the center line of an anchor pipe as reference, and an origin of the outlet of the anchor pipe is a constant value; (4) the center line of the anchor pipe and a rib position of a water line are marked on a tapping sample; (5) the anchor mouth is located on the outlet point of the anchor pipe of the planking of the hull; (6) values are reasonably corrected by a cat anchor test; (7) the anchor recess is installed. According to the lofting production method, the validity and the success rate of the cat anchor test are improved, the design quality is improved, the production cost is reduced, the production cycle is shortened, the production design is matched with a production method of a production department, so that anchor release, anchor raise and mooring of a ship can be successfully carried out after the anchor recess is installed.

The invention discloses a CFD simulation and grid self-adaption based valve flow coefficient calculating method. The CFD simulation and grid self-adaption based valve flow coefficient calculating method comprises the main steps that a 'valve-pipe' flow field model and a 'straight pipeline' flow field model are extracted based on a valve assembly body three-dimensional model; initial grids are divided for the flow field models, wherein multiple groups of initial grids different in scale are divided for the 'valve-pipe' flow field model; trial operation is performed by applying the groups of initial grids respectively, the change tends with grid scales of the obtained pressure differences are compared to select optimal initial grids; the optimal initial grids are applied to set different boundary conditions, and simulating calculation of corresponding flow coefficients is performed by combining a grid self-adaption technology; finally, the arithmetic average of the obtained flow coefficients is obtained to serve as a valve flow coefficient prediction result. The CFD simulation and grid self-adaption based valve flow coefficient calculating method can more rapidly and flexibly predict the flow capacity of a valve under various conditions, shorten a development period and improve the design quality and can effectively improve the calculation accuracy and reduce the dependence on specialization level of operators.