102 results about "Design evaluation" patented technology

A technique is provided for designing and evaluating service models for components, functions, subsystems and field replaceable units in a complex machine system. At a component or item level, each model identifies various items, failure modes, and so forth which may be the root cause of anticipated serviceable events or faults. The design tools permit numerous interfaces to be used in the design of service models, and in the evaluation of the degree to which the models address detectability and isolation capabilities for the root causes of serviceable events and faults.

An SRAM design evaluation circuit topology has the gates of the SRAM cell pass Gate Field Effect Transistors (FETs) connected to the cross-coupled gates of the inverter pair of the SRAM cell. This evaluation circuit typology is used in a full cell implementation. A series of full cells are interconnected one to another in a loop to form a ring oscillator. The output of the ring is frequency divided and measured to study the read and write behavior of the cell design. Similarly, half-cells, with the gates of their pass gates grounded, are interconnected one to another to form a ring oscillator, the output of which is frequency divided and measured to help isolate pass gate impact on memory function. The modified SRAM cell topology, connected as a ring oscillator in hardware, can be used to fully characterize an SRAM cell design, without the use of peripheral read/write circuitry.

The invention relates to an observation system variable-layout design evaluation method and an observation system variable-layout design evaluation device based on actual seismic data. The method comprises the following steps: the shot-geophone distance distribution of each surface element is calculated according to a variable-layout observation system of an obstacle in an exploration area; seismic channel set data representing the features of a target layer of the exploration area is selected from actual seismic data of the exploration area, the selected seismic channel set data forms a model super channel set, and the shot-geophone distance of the super channel set is distributed uniformly; a seismic channel with smallest offset distance is extracted from the model super channel set according to the shot-geophone distance for each surface element to obtain channel set data of the surface element; the channel set data of the surface elements is superimposed to obtain a seismic data body of the exploration area; and a seismic profile or horizontal slice is extracted from the seismic data body to analyze shallow seismic data loss and remedy, thus realizing observation system variable-layout design evaluation.

The invention provides an anti-seismic safety assessment method of a fortification-exceeding intensity earthquake of an engineering structure, and the method is characterized by comprising the following steps of (1) giving an earthquake level of frequently-occurred intensity, basic intensity, rare intensity and fortification-exceeding intensity in the place where the project is located; (2) demarcating the displacement or the displacement angular benchmark of the frequently-occurred intensity and the rare intensity; (3) matching the seismic oscillation of the frequently-occurred intensity, the basic intensity, the rare intensity and the fortification-exceeding intensity with the structure behavior through a static push-over analysis method or an increment power analysis method; and (4) drawing a structural capacity curve and a seismic oscillation curve, and judging whether the dual-control performance of the force and the displacement meets the requirement or not. The method has the beneficial effects that design evaluation is carried out for the uncertainty of the set fortification intensity, the safety, robustness and collapse resistance of the engineering structure can be improved, and no mature method can be referred especially for the anti-seismic safety assessment method in the international market.

A design evaluation system of mobile devices using virtual reality based prototypes is proposed. The system includes: a storage unit for storing therein 3-dimensional computer-aided design data of a virtual mobile device; a component selection unit for performing a selection among the 3-dimensional computer-aided design data stored in the storage unit and fetching the selected data therefrom; a design parameter setting unit for setting design parameters of the virtual mobile device; a 3-dimensional model visualization unit for visualizing the virtual mobile device to a 3-dimensional model by using the design parameters and the fetched data; a product motion control unit for simulating motions and functions of the visualized virtual mobile device; and a design preference display unit for displaying user design preference for the visualized and simulated virtual mobile device.

The invention relates to an objective advertisement design evaluation method based on a visual attention mechanism. The method overcomes the defect that the subjectivity of the traditional advertisement design evaluation method is too strong. The method comprises the steps of firstly, performing significance detection on a plane advertisement image to obtain significant areas which can reflect areas of interest of human eyes; generating an attention focus according to the significant areas in the plane advertisement image in combination with a WTA competitive mechanism and a no-return mechanism, wherein the obtained attention focus can reflect the degree of significance of each significant area of the plane advertisement; and judging whether pre-expression information areas of the advertisement attract the attention of advertisement audiences according to the significant areas of the plane advertisement, wherein the generated attention focus can further show the degree of attraction of each pre-expression information area in the advertisement image. The method sufficiently utilizes the simulation of a significance detection algorithm on the selective attention mechanism of a human eye visual system, provides an objective and scientific reference for advertisement design evaluation, and has extremely important application value in the advertisement marketing field.

The invention discloses a multi-population genetic algorithm based comprehensive optimization design method for electrical and mechanical performance of a basin-type insulator. The method comprises the following steps of building an electric field and stress finite element analysis program of the basin-type insulator; partitioning parts to be optimized of the basin-type insulator; determining an optimization decision variable and a constraint condition of each part of the basin-type insulator, and building a structure optimization objective function; constructing a structural optimization design evaluation function of the basin-type insulator; and calling the finite element analysis program to figure out by applying a multi-population genetic algorithm. According to the method, the electrical performance and the mechanical performance of the basin-type insulator are comprehensively considered, a comprehensive optimization design scheme can be determined for the whole structure of the basin-type insulator with a complicated shape, the design period and the design cost of the basin-type insulator are effectively reduced, and the method has wide practicability and economy.

The invention discloses a permanent magnet synchronous motor predicted torque control method and belongs to the technical field of permanent magnet synchronous motors. According to the method, first,a torque reference value is obtained according to a velocity PI controller, and a corresponding flux linkage reference value is solved through a maximum torque per ampere algorithm; the current and motor position signal collected at the starting moment of the k(th) control period are utilized to solve stator flux linkage (shown in the description) and torque (shown in the description) of a permanent magnet synchronous motor at the starting moment of the (k+2)(th) control period after different control voltage vectors act on the motor through a motor model prediction formula, and correspondingerror quantities and error coefficients under the action of different voltage vectors V<n> in the next control period are solved according to the reference value and a prediction value; and the errorcoefficients are substituted into a designed evaluation function, and then the optimal voltage vector V<n> can be solved. The method is applicable to both a constant-torque region and a constant-powerregion.

A design evaluation system includes a static analyzer sampling functions and variables related to the functions from a source code, a compiler compiling the source code into an executable code, a dynamic analyzer sampling each life start time and each life end time of the variables in case where the executable code is executed, and a memory load calculator calculating each memory load of the variables by multiplying each life time of the variables by each size of the variables, the life time being difference between the life start time and the life end time.

The invention discloses a three-dimensional intelligent auxiliary evaluation system and method for a power transmission and transformation project. The system comprises the following parts: a two-dimensional evaluation system used for declaring design data and closing-in auditing, and a three-dimensional evaluation system which is used for three-dimensional process evaluation, wherein the two-dimensional evaluation system uses a Webster platform and comprises an evaluation plan management module, an evaluation data collection module, a pre-evaluation module, a formal evaluation module, a closing-in auditing module and other management modules, and the three-dimensional evaluation system is composed of a three-dimensional evaluation module and a plurality of evaluation clients. According to the system, the engineering data management capability is integrally improved, a three-dimensional design evaluation authority management mode of the power transmission and transformation engineering is created, and strong data support is provided for orderly development of engineering construction.

In a method, apparatus, system and computer program product for selection of a statistical evaluation method from a set of evaluation methods, the selected statistical evaluation method being optimally designed for a measurement series, three measurement series-specific determination signals are recorded in a first phase and, in a subsequent second phase, a selection of the optimally-designed evaluation method ensues through access to an association mechanism that associates an optimally-designed evaluation method with the recorded determination signals.

The invention relates to a service cloud evaluation method based on a service level agreement constraint. The method includes the steps that blur evaluation is conducted on a service level agreement of a service cloud perceived by a user, and a service cloud resource for meeting the individuation need of the user is given; by the adoption of the blur evaluation of the service level agreement given by the service cloud resource, the service cloud resource suitable for the user is selected, screened and recommended. The service cloud evaluation method based on the service level agreement constraint belongs to the field of cloud computing and innovative networks. The designed evaluation method for the service cloud resource can be applied to terminal users in the service cloud for achieving the optimum matching of the resource on a PaaS layer, and meanwhile the algorithm is simple and easy to implement.

Disclosed is a guidance sign space arrangement evaluation method based on sight overlay analysis, which performs effect analysis on a visual area of human through overlay of dynamic sights of pedestrians in space to quantificationally evaluate the reasonability of the 'space arrangement'of the guidance sign. Firstly, the sight of a pedestrian is abstracted into a sector, the farther the distance, the larger the declination, and the worse the effect of space vision, secondly, a pedestrian flow line is obtained according to spatial prediction or in-situ observation, and a vision sector is formed according to each unit time to perform an overlay analysis of a sector sight of a single flow line, finally the flow rate of the pedestrian flow line is utilized as a weight to compute the vision effect of the multi-flow-line pedestrian visual area via weighting. The method makes up for the shortage that the guidance sign design is lack of evaluation tools, provides a quantitative basis for the 'design evaluation' and the 'post implementation review'of the space arrangement of the guidance sign, and has the advantages of coinciding with the cognitive law of pedestrians and being easy to be realized.

The invention discloses an electric power communication access network design evaluation method based on a multi-object decision-making. The method specifically comprises the following steps that (1) an evaluation index library and an evaluation method library are established; (2) evaluation indexes and an evaluation method are determined through index inquiries; (3) single objects are evaluated through the evaluation method determined in the step (2); (4) based on a multi-object decision-making theory, multi-object decision-making is conducted according to evaluation results of the single objects, and a comprehensive evaluation result is obtained according to user demand weighing and mutual influences among different indexes and used for evaluating the advantages and the disadvantages of a design scheme and giving improvement measures. By means of the electric power communication access network design evaluation method, the four types of indexes of the economical efficiency, the technical character, the reliability and the safety of an electric power communication access network can be fully evaluated. The design scheme is effectively evaluated, the targeted improvement measures are given, the network planning and designing level is increased, and the intelligent development of power distribution and consumption network is better supported.

A numerically-controlled machine tool feeding control compensation method based on an Actor-Critic algorithm comprises the following steps: firstly, designing a compensation link in a servo system according to the characteristics of the servo system, i.e., the problems of time delay and overshoot in an operation rising process; secondly, designing evaluation indexes according to control requirements, designing an Actor-Critic algorithm reward function by utilizing the evaluation indexes, determining Actor-Critic algorithm action parameters according to a control compensation link, and determining an algorithm iteration termination condition; and finally, operating the Actor-Critic algorithm, and determining an optimal compensation parameter. According to the method, compensation is appliedafter the PID link, the optimal compensation parameter is obtained through the Actor-Critic learning algorithm, the response speed is increased, the overshoot is reduced, and the feeding speed and precision are improved.

The invention discloses an evaluation method for transmission performance of vehicle self-organizing network data, comprising the steps of firstly, the method designs unified self-organizing network communication environment of real vehicles and uses the current UDP communication mechanism to design test method under the real vehicle self-organizing network environment, afterwards, designing specific data processing method and evaluation standard based on features of vehicle self-organizing network and principle of statistics, thereby to be able to consider the complexity of vehicle self-organizing network under real data transmission environment. The invention designs evaluation method for transmission performance of vehicle self-organizing network under real vehicle environment on the basis of relevant statistical method, the method can take the features of vehicle self-organizing network into account and study the relationship between data transmission performance and external environment parameter so that to provide real data support for subsequent product development and network optimization etc.

The present invention provides a rapid convergence ant colony classification method based on the adaptive dynamic pheromone. The mainly comprises: prior to the ant colony searching, arranging starting factors which guide the search behaviors of the ant colony; detaining the pheromone information in the ant colony path search process, and searching the next path of the ant colony through the setting probability transfer function based on the pheromone information; and after all the paths of the ant colony are searched, determining the path with the shortest whole distance as the optimal path of the ant colony. The rapid convergence ant colony classification method based on the adaptive dynamic pheromone comprehensively considers the dynamic update factors of the pheromone information of the ant colony at each step in the process of the path walking selection to allow the update of the pheromone information to be more accurate and more correspond with the update rule. The designed evaluation function can ensure that the algorithm can timely delete the bad selected paths and timely guide the classification behavior of the ant colony so as to accurately and rapidly search the optimal path.

The invention relates to a spatial information integrated building indoor light environment design evaluation method and device. The method comprises the steps of constructing a parameterized geometric prototype, actually measuring local light climate data, sampling a model parameter space by adopting a Latin hypercube sampling method to obtain a design parameter data set, and importing the designparameter data set into a simulation analysis model to obtain light environment performance data; extracting space information by feature engineering, and integrating sampling point space coordinatesand design parameters to serve as input parameters; training MLR, XGBT and MLP, and integrating the MLR, the XGBT and the MLP in an integrated learning mode to obtain a prediction model; obtaining ato-be-evaluated design model, obtaining input parameters meeting input requirements, and inputting the input parameters into the prediction model to obtain a light environment prediction result; and outputting and comparing the prediction result to obtain an evaluation result. The defects of low evaluation efficiency, long time consumption and weak generalization ability of the existing building indoor light environment design can be solved, and decision support is provided for the building indoor light environment design in the scheme stage.

The invention provides a heterogeneous multi-core SoC design evaluation system. The system comprises an assembly abstract modeling module for performing abstract modeling for a master-slave assembly of a bus, a design space definition module for setting each variable and the value range corresponding to each variable according to the SoC design demand, a performance index evaluation module for forming a first SoC structure according to each variable and the value range as well as performing simulation evaluation and comprehensive evaluation of the first SoC structure so as to obtain performance indexes of the SoC, a model training and exploring module for performing model training by the machine learning algorithm according to the performance index and each variable so as to obtain a predication module or a classifying module, and a system structural optimizing module for selecting a second SoC structure through the predication module or the classifying module, wherein the master-slave assembly comprises a coprocessor. With the adoption of the system, the design and evaluation of a heterogeneous multi-core SoC system structure can be assisted to be done.

A method for determining a recommended maintenance interval for a fleet of units as a function of the operational profile of each unit within the fleet. Models are created at the failure mode level for each component of interest. Models for all of the individual failure modes are combined to result in an operational metric of interest which a business owning the fleet of units may prefer to hold constant for each unit in the fleet. Design evaluation tools may be utilized to evaluate boundaries. A system for determining the recommended maintenance interval.

A method for storage cell design evaluation provides accurate information about state changes in static storage cells. A wordline select pulse is propagated along the wordline select path of the test row to an output driver circuit, in order to test the clock and/or address timing of the row, so that variation of access timing, read stability and writeability with wordline strength/access voltage can be determined. An access detection cell holds the input of the output driver circuit until a simulated access operation activated by the wordline select pulse is complete. Multiple test rows may be cascaded among columns to provide a long delay line or ring oscillator for improved measurement resolution.

The invention belongs to the technical field of finite element analysis, and discloses an O-shaped sealing ring rapid selection method based on finite element simulation analysis. The method includes the following steps of determining parameters, such as the size and working environments, of an O-shaped sealing ring, determining a rubber physical nonlinear material function model, establishing a finite element model, conducting simulation analysis on relations among the material hardness, installation conditions, environment pressure and sealing surface contact pressure, calculating the material hardness and installation conditions of the O-shaped sealing ring in an undetermined environment, and calculating the sealing performance of the O-shaped sealing ring. According to the technical scheme, the method is simple, complex sealing tests are avoided, the test cost is reduced, the design and evaluation period is greatly shortened, and the method can be applied to design and improvement of a sealing system and also has a good application value in the aspect of sealing reliability evaluation.