309 results about "Dynamic method" patented technology

A system and method for providing target groups of customers with a plurality of promotions for a plurality of goods. Active customers are tracked for each target group. Active customers can include customers with portable devices, customers with hand-held devices, customers who are viewers of a pay-per-view system and customers who are viewers of a web site. The promotions for each target group are calculated based on the promotional objectives for each target group and the conditions in the operating environment. Selected promotions are sent the active customers for each target group.

Dynamical methods for obtaining the global optimal solution of general optimization problems having closed form or black box objective functions, including the steps of first finding, in a deterministic manner, one local optimal solution starting from an initial point, and then finding another local optimal solution starting from the previously found one until all the local optimal solutions starting from any initial point are found, and then finding from said points the global optimal solution.

An energy-based method for automatically locating the earthquake focus of a microearthquake belongs to the field of microearthquake detection, and relates to an earthquake focus locating method used in a microearthquake monitoring system, in particular to an automatic microearthquake locating method and a method for improving the locating accuracy. The invention adopts an earthquake wave dynamic method which is an earthquake locating algorithm based on earthquake wave energy attenuation equation, complicated calculation of energy of the earthquake waves is not required, parameters such as themaximum shake amplitude or quadratic sum of the shake amplitude and the like are adopted to represent energy, and the arrival time of the earthquake waves does not need to be picked up at all, so that problems caused during automatic locating of the earthquake focus of the microearthquake are solved; and as energy difference is taken as the optimized variable, while energy attenuation is in direct correlation with range, the defect that the travel-time difference serving as the optimized variable is only related to the travel-time difference (range difference) but not in direct correlation with the size of the range per se, the external-field locating accuracy, particularly the accuracy in the vertical direction, is improved, and the stability of the locating result is also improved.

Methods and systems for detecting malicious domains. The method comprises storing domain data for a plurality of domains and selecting a relationship parameter which represents a relationship between at least two of the domains. The method further comprises generating a graph for the domains by identifying a plurality of domain nodes, connecting the domain nodes with a plurality of edges and calculating an edge weight for each edge. The method further comprises identifying at least one domain node as a known malicious domain node and the other domain nodes as candidate domain nodes, calculating a malicious score for each candidate domain node based on the edge weights and identifying a domain in the plurality of domains as malicious if the malicious score is within a predetermined range.

Provided is a dynamic method for asymmetry compensation in a storage read channel. An asymmetry cancellation component in communication with an analog-to-digital converter receives an analog signal representing data read from a storage medium by a read head. The asymmetry cancellation component receives a digital signal from the analog-to-digital converter representing data read from the storage medium and computes an error signal indicating an asymmetry in the digital signal. The computed error signal is used to determine a coefficient. The digital signal is adjusted using the coefficient to produce a corrected digital signal.

Methods and systems are provided for inducing combustion dynamics within turbine engines to remove combustion deposits within the turbine engine during operation of the turbine engine.

A dynamic method (100) to better depict context among the different views of an imaging visualization application used by a medical workstation.

A method for computing or estimating relative permeability for fractional multi-phase, multi-component fluid flow through a porous medium, which employs a 3D digital representation of a porous medium and a computational fluid dynamics method to calculate flow rates, pressures, saturations, velocities and other flow parameters, is described. The method employs a unique method which integrates a precursor simulation used to generate a set of variables like pressure, saturation and velocity distribution associated with a selected storage plane in the 3D digital representation of a porous medium, which variables are used as inlet condition in the workflow of a second simulation that can generate values of fractional flow rates, pressures, saturations, velocities, or other parameters of wetting and non-wetting phases, which can be used to compute or estimate relative permeability values or other fluid transport properties of the porous medium. Computerized systems and programs for performing the method are also provided.

A method for estimating joint load at a joint of a segment. The method comprises the steps of receiving kinematic data, determining a modified acceleration using at least the kinematic data, estimating a joint load using at least the modified acceleration; and determining simulated kinematic data for the segment using at least the joint load. The present invention thus addresses the problems with conventional inverse dynamics analysis by providing a forward dynamics solution for estimation of joint loads that is stable, guaranteed to converge, computationally efficient, and does not require acceleration computations. According to one embodiment, a joint load is estimated using an approach of closed form dynamics.

Methods and apparatus for fast computation of fluid velocity fields in the presence of objects causing flow discontinuity are disclosed. Rigorous evaluation of perturbed velocity fields, each resulting from placing an object in a bounded space sustaining a reference velocity field, are determined for different orientations of the object with respect to a reference velocity field and different values of the magnitude of the velocity field. A velocity field is determined at selected sampling points within an enclosure surrounding the object. Pre-computed perturbed velocity fields determined for each object of a set of reference objects are stored in a computer memory. Fast real-time computation of velocity-field perturbations caused by presence of objects at arbitrary positions in a space sustaining velocity fields of different magnitudes and directions are realized using the stored pre-computed data.

The invention discloses a dynamic gas well productivity forecasting method. The method comprises the following steps: obtaining the initial open-flow potential qAOFi, initial formation pressure pi and current formation pressure pm of the gas well; obtaining the gas viscosity mu g and the deviation factor z; and forecasting the gas well productivity under the current formation pressure according to the obtained parameters. Starting with the theoretical formula of the gas well yield, the dynamic method for forecasting productivity in the gas well production process is provided in combination with the relevant empirical formulas on the premise of certain assumptions. The method has the following beneficial effects: the influence caused by formation pressure variation in the conventional productivity evaluation methods is eliminated; the evaluation results are more accurate and reliable; and application proves that the method is applicable, simple and convenient, repeated well testing is not needed, lots of manpower and money can be saved and the method has greater practical value and economic value.

A system and method for presenting a navigable view of a virtual model of a three dimensional object comprising a virtual three dimensional topographic framework and at least one visual representation of an internal region of the object imaged within a sample of the object. The visual representation is superimposed upon a view of the three dimensional topographic framework at a location corresponding to the internal region of the sample. In preferred embodiments, the three dimensional object comprises an anatomical specimen.

The invention discloses a method for realizing state monitoring and fault diagnosis of a water turbine based on a chaos theory, in particular, relates to a method for operating state monitoring and fault diagnosis of the water turbine, can preferably master the characteristic of instability of an internal flowing field of the water turbine, and solves the problem of difficult diagnosis of cavitation fault of a traditional water turbine. The method uses the promotion of wavelet transform for denoising pressure pulsation signals, and uses a chaos dynamics method for analyzing chaos dynamics characteristics of the water turbine in off-design operation so as to judge the caviation degree in the operation of the water turbine and to predict possible faults. The method is applied to the operation state monitoring and the fault diagnosis of the water turbine.

The invention discloses an anti-noise-interference redundant manipulator path planning method and a system. The method comprises the steps of (1) building a time-varying quadratic planning model according to an actual redundant manipulator parameter index, and introducing a performance index of a redundant manipulator; (2) using a lagrange multiplier method for carrying out optimal value optimization on the time-varying quadratic planning model; (3) designing a standard matrix equality according to an optimization formula; (4) designing a deviation function equation of the system according toan actual physical model system and the standard matrix equality; and (5) designing the anti-noise-interference redundant manipulator path planning method according to the deviation function equationand a power type varying parameter recursion neurodynamics method, wherein a network state solution solved by the method is an optimal solution. According to the anti-noise-interference redundant manipulator path planning method and the system provided by the invention, with the interference of an outside noise environment, an actual motion path of a redundant manipulator can further coincide withan expected path, so that the calculating speed is greatly improved, and the method has the characteristics of high precision, fast convergence, high instantaneity, good robustness and the like.

Methods and systems for communicating information between a narrowband circuit and a broadband circuit for conserving bandwidth while monitoring gas turbine combustion dynamics are provided. The method includes receiving a stream of data through the narrowband circuit, splitting the stream of data into a plurality of data packets, and transmitting each of the data packets to a predetermined list of sockets through the broadband circuit. The system includes a narrowband network segment communicatively coupled to a broadband network segment, and a data network split/relay device communicatively coupled to the broadband network segment programmed to receive a stream of data from a server communicatively coupled to the narrowband segment.

The invention relates to a GPS (global positioning system)-based dam concrete material tank anti-collision monitoring and navigation positioning method. According to the method, a material tank collision monitoring algorithm based on time and space is designed according to the position of a material tank, running speed information and field obstacle information, which are monitored and acquired in a GPS in a real-time manner, and pre-warning judgment can be made against the potential collision probability of the material tank in the two aspects, namely the time and the space in the real-time manner; simultaneously, the invention provides two navigation positioning methods, namely the static method and the dynamic method for guiding a driver to perform high-efficient and correct operation on the concrete material tank, thereby providing a safe, reasonable and reliable navigation path for fast construction. By adopting the method, the occurrence of serious construction accidents of collision of equipment caused by human factors during the construction process can be effectively reduced.

The invention discloses a high-speed angular contact ball bearing damage fault dynamic analysis method which is characterized by including the steps of (1) building a high-speed angular contact ball bearing dynamic model, (2) building a high-speed angular contact ball bearing damage fault model, (3) integrating the damage fault model with the high-speed angular contact ball bearing dynamic model to build a high-speed angular contact ball bearing damage fault dynamic model, and (4) carrying out numerical solution to obtain a dynamic response of a bearing under a fault situation and achieving dynamic analysis of a high-speed angular contact ball bearing damage fault. According to the method, three-dimensional motions, relative sliding and lubricating traction effects of the bearing element are taken into consideration, a comprehensive model of the damage fault is built in terms of mutual approach quantity, Hertz contact stiffness and contact load functions, analysis accuracy is improved, and the method for high-speed angular contact ball bearing damage fault dynamic researches is accurate.

Provided is a method for calculating dynamic characteristics of a contactor based on a piecewise linear kinetic equation, and belongs to the technical field of basic research design of general characteristics of contactors. The method comprises the steps that according to structural features of the contactor, segmentation is conducted on a contactor action process, plane collision and a continuouscollision force model with energy loss considered are used for being equivalent to a collision process, by means of the multi-body system kinematics based on a restrain method and a dynamic method, studying of the collision bounce situation of a contactor mechanical system under the action of external force is completed, and finally, dynamic characteristic calculation of the contactor with collision bounce considered is completed in combination of a coupling calculation method. The method has the advantages that the time-dependent situation of electromagnetic parameters such as the coil current and electromagnetic force in a working process of the contactor can be obtained, the electromagnetic dynamic characteristics of the contactor can be reflected more accurately, and errors are controlled within 5%; the bounce situation of an armature and a moving contact of the contactor can be reflected more really, and errors are controlled within 5%.

An interface boosted electrically charged hydromechanical method without nozzle for electrostatic atomizing, electrostatic spinning, or electrostatic spraying features that the proper acting force other than the electrostatic force is applied to the electrically charged fluid to make it break through the surface tension and internal action force of said fluid, so using it to machine or process the target material.

The invention discloses a dense roadway group rock burst hazard prediction method. The method includes the following steps: first acquiring the dynamic sensitive area of a coal bed in a dense roadway group area; then mounting roof dynamics monitors along a direction leading to a dense roadway group to carry out roof dynamics observation; before a dynamic area stress range related to coal mining gets close to the dense roadway group, mounting highly sensitive stressmeters in the sensitive area to observe stress change, and when the stress increment is abruptly changed, carrying out rock burst hazard monitoring. By means of an artificial blasting technique in the dense roadway group, the method acquires the coal-rock stratum disturbance-sensitive area, finding a vulnerable area; the roof dynamics method is adopted to acquire the tendency characteristics and range of dynamic stress and quantitatively describe the distribution rule of the dynamic stress; delicate physical quantity observation timely judges the early disturbance response of the dense roadway group, rock burst hazard process monitoring is carried out before high energy is released, and the hazard level is judged by means of indexes.

The invention discloses a full-field intelligent dispatch method of container wharf trailers, comprising the following steps: 1) operating a dispatch scheme formulating module, and formulating an optimized trailer dispatch scheme; 2) judging whether the optimized trailer dispatch scheme can finish loading and unloading within the period required by customers; if not, adjusting the number of the trailers for performing loading and unloading tasks, and converting to perform step 1); if yes, transmitting the optimized trailer dispatch scheme to the trailer dispatch module of a port management system, and controlling the corresponding trailers to perform the loading and unloading tasks; 3) operating a dynamic adjusting module, and adjusting the dispatch scheme according to a feedback loading and unloading message. The invention adopts the combination of a dynamic method and a static method to realize the full-field intelligent dispatch of the container wharf trailers, has the characteristic of self adjustment and can optimize the dispatch scheme; meanwhile, due to the firm basis, the invention is easy to find a better algorithm. The model of the invention approaches to reality and has small model operand, thus ensuring stronger practicality.

A non intrusive method and system for the dynamic measurement of a distance, or the variations over time thereof, constituting the thickness, or the variations thereof, of a thin compressible dielectric material located between one or several other closely spaced solid dielectric layers of constant thickness and a conductive or semi-conductive surface. This is achieved by positioning a capacitive sensor on the external layer of the dielectric material, the sensor being composed of two parallel plates electrically insulated from one another, feeding the first plate with a high frequency signal, measuring the voltage and current value over time generated by the high frequency signal between the plate of the sensor which is closest to the surface of the outer layer of dielectric material, and deducting the above distance or variations thereof.

A method for obtaining a global optimal solution of general nonlinear programming problems includes the steps of first finding, in a deterministic manner, all stable equilibrium points of a nonlinear dynamical system that satisfies conditions (C1) and (C2), and then finding from said points a global optimal solution. A practical numerical method for reliably computing a dynamical decomposition point for large-scale systems comprises the steps of moving along a search path φ_t(x_s)≡{x_s+ t×ŝ, tε⁺} starting from x_s and detecting an exit point, x_ex, at which the search path φ_t(x_s) exits a stability boundary of a stable equilibrium point x_s using the exit point x_ex as an initial condition and integrating a nonlinear system to an equilibrium point x_d, and computing said dynamical decomposition point with respect to a local optimal solution x_s wherein the search path is x_d.

The invention provides a method for optimizing performance parameters of a movement mechanism of electronic equipment, which comprises the following steps: performing three-dimensional modeling on theelectronic equipment; respectively establishing a multi-rigid-body dynamic model and a rigid-flexible coupling multi-body model based on the established three-dimensional model of the electronic equipment; adopting a virtual prototype method to obtain the dynamic errors of the models; and optimizing the performance parameters of the movement mechanism of the electronic equipment by taking the minimum dynamic error as a target. Based on a multi-body dynamics method, the method respectively establishes the multi-rigid-body dynamic model and the rigid-flexible coupling multi-body model, optimizes to obtain the structural parameters of the high-precision and high-speed electronic equipment by taking the systemic dynamic accuracy as a target. The method has the advantages of accuracy, convenience, practicability and the like, contribution to improving the design capacity, acquisition of a better product structure and the like.

The invention discloses a unified dynamic modeling method of a generalized system of a crawler-type mobile manipulator. The core thereof comprises the following steps of: utilizing absolute coordinates to calculate kinetic energy and potential energy of the crawler-type mobile manipulator; using lagrangian dynamic method of a robot to carry out unified dynamic modeling to the crawler-type mobile manipulator; and rewriting the modeling into the unified dynamic modeling under the generalized system as the mobile manipulator is a complex system and a mobile platform has incomplete constraint. The invention avoids the error caused by that the coupling and mutual influence of the mobile platform and the manipulator which are respectively modeled and controlled when the mobile manipulator is researched originally, simultaneously has strong theoretical property, clear thinking and easy realization of programming and achieves the purpose of controlling the type of mobile manipulator precisely.