38 results about "Ideal system" patented technology

Fraud detection mechanisms and methods that are adapted for inconsistent data collection are provided. Data is analyzed to determine normal operational variations from ideal system behavior. Profiles are developed for each individual sender, e.g., the number of multiple scans performed per confirmation number generated by each sender, and other parameters, such as delivery areas, e.g., the number of multiple scans performed per specific geographic area. If the sender's profile differs significantly from the normal operational variations, there is an indication of potential fraudulent activity and an investigation can be initiated. By analyzing a combination of sender and delivery scan data with system wide scan data, the effect of inconsistent data is minimized to significantly reduce the number of erroneous indications of fraudulent activity while still providing a high level of fraud detection.

The invention provides an automatic and flexible method of virtual machine live migration in the field of cloud computing. The method can deal with severe network environments, reduce system resource consumption, improve system usability, and obtain ideal system stop time. According to the memory transfer scheme of the method, memory page pre-copy technology is adopted so as to achieve the purpose of reducing stop time, and a central control engine is used for real-time monitoring of utilization conditions of resources in a cloud computing environment, the live migration can be initiated independently. Meanwhile, the method realizes the technology of live migration between virtual machine monitors which are different in type, and increases flexibility of the live migration.

A paraboloidal catadioptric camera is calibrated by relaxing the assumption of an ideal system to account for perspective projection, radial distortion, and mirror misalignment occurring within the camera system. Calibration points, which are small and visually distinct objects, are distributed at fixed locations within an environment. Omnidirectional images are captured by the catadioptric camera at different locations of the environment. Data points are obtained by identifying the location of the calibration points in each captured image. An optimization algorithm best-fits the data points to a perspective camera model in order to derive parameters, which are used to calibrate the catadioptric camera.

The invention discloses an internal-model-based sliding mode control method capable of inhibiting mismatching disturbance of a permanent magnet linear motor. The internal-model-based sliding mode control method includes the steps that a five-phase fault-tolerant permanent magnet cylindrical linear motor model with mismatching disturbance is set up; an internal model controller of an ideal system is designed by adopting an internal model control strategy; based on the motor second-order mathematic model, mismatching disturbance observers are designed to observe mismatching disturbance of a motor system; two kinds of mismatching-disturbance-based observers are designed, the sliding mode control rules (the symbol is shown in the description) of the system under the two methods are solved; the expression (the symbol is shown in the description) is equivalently transformed to contain system mismatching disturbance errors, the Lyapunov function is selected, and the obtained sliding mode control rules (the symbol is shown in the description), a d-axis voltage set value (the symbol is shown in the description), an x-axis voltage set value (the symbol is shown in the description) and a y-axis voltage set value (the symbol is shown in the description) are used for achieving high-performance operation of the internal-model-based sliding mode control system capable of inhibiting mismatching disturbance of the fault-tolerant permanent magnet cylindrical linear motor by means of a voltage source inverter through a CPWM modulation method, wherein the d-axis voltage set value, the x-axis voltage set value and the y-axis voltage set value are output by a PI current regulator.

The invention discloses a digital Moire phase shift interferometry method based on a two-step carrier splicing method, and belongs to the photoelectric detection field. The digital Moire phase shift interferometry method based on a two-step carrier splicing method includes the steps: establishing a virtual interferometer, and obtaining an ideal system residual wavefront on an image plane of the virtual interferometer; acquiring two practical interferograms of a measured surface shape under different spatial carriers; solving the two interferograms by means of the digital Moire phase shift interferometry method respectively, and obtaining two surface shape errors with different error regions and different error regions through solution; extracting the correct areas of the two surface shapeerrors to perform splicing; and then finally obtaining the surface shape error without the error regions. Therefore, the digital Moire phase shift interferometry method based on a two-step carrier splicing method solves the problem that a digital Moire phase shift method makes solution errors when encountering the large residual wavefront, so as to expand the measurement range of the traditional solving the error in the large residual wavefront by, and then extend the measurement range of the traditional digital Moire phase shift method, eliminate the residual wavefront bandwidth limitation ofthe traditional digital Moire phase shift method and realize measurement of the measured surface shape of the large residual wavefront. The digital Moire phase shift interferometry method based on atwo-step carrier splicing method can maintain the advantages of the original digital Moire phase shift interferometry method.

The invention discloses a minimum overload terminal guiding method with terminal angular constraint. By using the method, the minimum theoretical value of a required overload under an ideal system can be obtained, and large terminal angle high-precision terminal guidance is obtained on the premise of being close to the minimum ideal required overload as far as possible. According to the content, the method comprises the steps that firstly, a circular-linear guidance law uCLGL(t) is calculated for the ideal system according to a target position and the terminal angular constraint, so that the lower limit of the required overload under the large terminal angle is determined, and the design is used for guiding a guided weapon to achieve the maneuvering capability required by the large terminal angle; secondly, according to a non-ideal system with lagged links of an automatic pilot, the tail of the circular-linear guidance law is switched into a polynomial guidance law with first-order derivative compensation, so that the combined guidance law is formed, the switching condition is given, the required overload behind the switching point is not larger than the required overload in front of the switching point, and meanwhile terminal position and angular errors can be effectively reduced.

The invention discloses a method for detection of protein-protein interaction through a BRET technology based on bacterial Luciferase. A fluorescent donor clonal pBluescript-pLac::luxAB-MCS is constructed; Green fluorescent protein (GFP) and the like are selected as acceptor proteins; appropriate enzyme cutting sites are chosen in MCS, and three kinds of fluorescent proteins are cloned into the MCS respectively; model bodies of BRET signals are generated; the fluorescence intensity of Luciferase of each of the three BRET model bodies is detected; three model bodies with high fluorescence intensity value are selected as fluorescence donors of BRET signal generation; the expression conditions of the fluorescent proteins are detected through a biological fluorescence microscope (Leica), an appropriate fluorescence acceptor is secleted; The singals of the BRET model bodies are detected through a fluorospectrophotometer. In the method, bacterial Luciferase luxAB as a fluorescence donor for detecting interaction between two proteins and eYFP as a fluorescence acceptor generate BRET signals, and BRET models are constructed. The system can detect dynamic interaction between two proteins in vivo, raise the accuracy of detection of protein-protein interaction, and is an ideal system for detection of protein-protein interaction in prokaryotic cells.

The invention relates to a cardiac stent with a three-dimensional structure and anisotropy and a preparation method thereof. According to the cardiac stent, a nanometer fiber stent is weaved by static spinning, a meshed structure is defined by adjusting the orientation, density and length of spinning fibers, suspended nanometer fibers without a substrate allow the attachment and growth of cells, and an excitable mesh is formed by the nanometer fiber stent in a hollow tissue form. The cardiac stent has the advantages that: fiber materials prepared by the method can be used for a system for constructing cardiac tissues in vitro, and the anisotropy of the cells is controlled by aggregating the cells on the nanometer fiber mesh for growing; the nanometer fiber mesh is covered on a support made from polydimethylsiloxane by electric spinning to be suspended in the air; and the three-dimensional structure and the anisotropy can be kept, so that the transmission of nutrient and metabolic products is facilitated by a polymethyl glutarimide fiber-based tissue structure, and an ideal system is provided for tissue engineering. A preparation process is simple and convenient to operate, and has a bright application prospect.

The invention belongs to the technical field of wireless communication and specifically relates to a single carrier system IQ (In-phase\Quadrature) imbalance compensation method based on a Golay sequence. The method provided by the invention is the method for finishing estimation in a time domain through autocorrelation of the Golay sequence and compensating the I\Q imbalance. The single carrier system IQ imbalance compensation method based on the Golay sequence comprises the steps of separating and estimating an original signal component and a conjugate component of a received signal; estimating equivalent channel information; estimating a compensation filter coefficient; and compensating the I\Q imbalance. According to the method, on the premise of not losing accuracy, when a sequence length reaches 256 symbols, the performance difference between the compensation performance and an ideal system is reduced to 0.2dB.

The invention provides a composite of dry cleaning solvent. The composite consists of a cleaning solvent, and synergistic components, wherein the synergistic components comprise water and a water modifier. The composite of dry cleaning solvent can effectively clean hydrophilic and hydrophobic blots without damaging clothes and accessories of the clothes; after being cleaned by the composite of dry cleaning solvent, the clothes are loose and soft; and the composite of dry cleaning solvent is safe to the environment as well as the human bodies, and is an ideal system of dry cleaning solvent.

The invention discloses a wavelet weighted multi-modulus blind equalization method based on simulated annealing wolf pack optimization. The method specifically comprises the following steps that a simulated annealing optimization method with stronger local search ability is embedded into a wolf pack optimization method with strong global optimization ability to obtain a simulated annealing wolf pack optimization method SA-MA, wherein the new method is used for minimizing a non-convexity cost function of a weighted multi-modulus blind equalization method WMMA; a fitness function of the SA-MA is determined through the cost function of the WMMA; an input signal of an equalizer is taken as an input of the SA-MA; and a finally-obtained position vector for monkeys is taken as an initial weight vector of the WMMA, the cost function obtains a minimum value at this moment, a blind equalization system becomes an expected ideal system, and a signal-to-noise ratio is reduced by utilization of wavelet transform, so that a good equalization effect of a high-order QAM signal is obtained. Compared with the similar technology, when the high-order QAM signal is equalized, the method has faster convergence speed, smaller steady state error, better equalization effect and strong practical value.

The invention relates to an oxide thermoelectric material BiCuSeO single crystal and a preparation method thereof. The BiCuSeO single crystal gas phase transport growth method has the advantages of simple device and easy operation. A prepared BiCuSeO single crystal material has a high crystal mass, the BiCuSeO single crystal has the size of millimeter and an area of square millimeter, and the single crystal material provides an ideal system to elucidate intrinsic physical properties of the material. The great significance to the research on how to effectively improve thermoelectric propertiesof a BiCuSeO-based thermoelectric material so as to develop relevant thermoelectric devices is provided. The BiCuSeO single crystal is an oxide thermoelectric material and can be used as an ideal high-temperature thermoelectric material to develop the relevant thermoelectric devices. A crystal grown by the gas phase transport method has the advantages of high purity, high quality, low cost and high operability.

An engine exhaust-driven heating device generates a high volume, steady stream of hot gas by passing an exhaust stream from a gasoline, propane, natural gas, or combustible fueled internal combustion engine through a catalyst that reduces the atmospheric emissions of the stream and liberates the energy of the pollutants in the stream. The device then combines the catalytic-treated air stream with a fresh air stream to further react with remaining pollutants and generate additional heat. The hot gas may be used to dry a variety of surfaces and, when integrated without other components typically found in surface drying equipment, provides an ideal system for use in a variety of moderate- to large-sized portable surface drying equipment. The heating device provides a reliable and continuous heat source and, when integrated into a controlled delivery system, dries the moisture from a surface faster and more effectively than prior art heating devices.

The invention discloses an indirect driving high-precision servo implementation method under nonlinear interference, and belongs to the technical field of seeker stabilized platforms. The method can solve the problem that the servo performance becomes poor due to factors such as nonlinear interference torque, gear transmission backlash and friction torque caused by shaft penetrating cables, wherein the shaft penetrating cables adopted by the stabilized platform are in a spiral wiring mode. The method includes the following steps that an ideal system model of the stabilized platform is built and calibrated, so that a transfer function G0 of the ideal system model is obtained; a servo control algorithm is adopted to carry out servo control over the stabilized platform of the seeker; the angular velocity v of a frame is compared with the polarity of the output voltage u of a motor, and when the v is different from the u polarity, backlash compensation is superposed in the control quantitycalculated by the servo control algorithm; and interference compensation d is superposed on the control quantity calculated by the servo control algorithm according to the difference e between the input quantity and the output quantity of the stabilized platform.