460 results about "Functional relation" patented technology

A system and method for automatically creating performance models of complex information technology (IT) systems. System components and elements are subject to periodic monitoring associated with performance thresholds. A continuity analysis is performed by synchronizing testing functions associated with the predetermined system performance thresholds. Resulting data is accumulated and data mined for component and functional relations within the IT system. Models of the system may then be adapted with results generated from the analysis.

The invention discloses a system and a method for tracking and controlling gestures of a spacecraft. The system comprises a gesture measurement component, a gesture controller and a control executive component, wherein the gesture measurement component is used for acquiring gesture information of the spacecraft and outputting a signal having a functional relation with gesture parameters; the gesture controller is used for performing operation, correction and amplification in accordance with a set control law according to the information acquired by the gesture measurement component and a guidance command, and outputting a control signal to the control executive component; the control executive component comprises a magnetic torquer, a bias momentum wheel and a tilt switch control unit; and the tilt switch control unit is used for controlling the rotating speed control quantity of the bias momentum wheel. The system and the method skillfully achieve the fast control ability of a star pitch axis and simultaneously a high-precision complex gyroscopic instrument is not required in use, thus the dependence on angular speed information of the system is remarkably reduced.

The invention discloses a fault positioning method for a power distribution network by combining simulation calculation and real-time monitoring, and belongs to the technical field of fault detection of the power distribution network. The method comprises the following steps of: extracting information of a target power distribution network from the conventional power distribution network geographic information system and a power distribution network energy management system through an organizational data analysis interface to automatically generate a real-time simulation calculation model of the target network; putting forward a virtual node-based fault positioning algorithm according to the simulation calculation model so as to solve functional relation between voltage amplitude of any node and a fault position parameter when a symmetric and asymmetric fault occurs at any point in the target network; and finally calculating an accurate position of the actual fault of the power distribution network by using a small amount of real-time data of voltage drop amplitude in a fault process. By using the fault positioning method for the power distribution network by combining the simulation calculation and the real-time monitoring, the state and the parameter of the network are accurately and effectively reflected when the fault occurs, the accuracy of the fault positioning is improved, and the method is suitable for various network structures and fault types.

The invention supplies a method to gain the optimal guidance symbol power. It is used the factors that system noise signal ration in the channel estimating, base station and mobile platform relative move speed, coherent testing channel estimating interpolation filter coefficient and it depth, signal modulating module and the functional relation between the optimal guidance symbol power and the data symbol power ratio to gain the method used to gain the optimal power radio. The method of the invention is adopted to gain the optimal bit error ratio to the self-adapting OFDM system at the condition of giving the total emission power.

The invention belongs to the technical field of intelligent transportation and relates to a front vehicle ranging method based on monocular vision. The method includes: adjusting the posture of a vehicular camera, considering the pitch angle variation range due to bumping to adjust the pitch angle of the camera, and using the obtained actual measurement data to segmentally fit the functional relation between an ordinate and an actual longitudinal distance at different pitch angles and the functional relation between the ordinate and an actual transverse distance represented by per horizontal pixel at different pitch angles; and when a vehicle runs, calibrating real-time pitch angle of the camera according to left and right lane lines detected in real time and a three-line calibration method, and then using the linear interpolation method to calculate to obtain the distance between the vehicle and a target vehicle. The front vehicle ranging method based on monocular vision has a real-time dynamic compensation effect on ranging error caused by vehicle bumping and can be used for accurately calculating the distance between the vehicle and the front vehicle.

The invention discloses a method for controlling the temperature of outlet air of an air conditioner. The air conditioner is provided with different cold-air preventive temperatures TE for preventing cold air from being blown out from an air outlet, each cold-air preventive temperature TE and set temperature TS meets functional relation of TE=B+f(TS), when the set temperature TS rises, the cold-air preventive temperatures TE rise, when the set temperature TS drops, the cold-air preventive temperatures TE drop, simultaneously, an indoor fan can run at set rotation speed WS, gentle-breeze rotation speed W0, shutdown speed and rotation speed between the WS and the W0 according to different cold-air preventive temperatures TE during heating running of the air conditioner, and the rotation speed W which changes linearly is determined according to the temperature of an indoor heat exchanger. The method for controlling the temperature of outlet air of the air conditioner has the advantages that cold air can be effectively prevented, comfortableness of users is enhanced, and purposes of quick heating and comfortable heating are achieved.

The present invention is directed to a number of improvements in methods for hot-carrier device degradation modeling and extraction. Several improvements are presented for the improvement of building device degradation models, including allowing the user to select a device parameter used to build the device degradation model independent of the device parameter selected. The user can also select the functional relation between stress time and degradation level. To further improve accuracy, multiple acceleration parameters can be used to account for different regions of the degradation process. Analytical functions may be used to represent aged device model parameters, either directly or by fitting measured device parameters versus device age values, allowing devices with different age values to share the same device model. The concept of binning is extended to include device degradation. In addition to a binning based on device width and length, age is added. In an exemplary embodiment, only devices with minimum channel length have degraded models constructed. The present invention also allows the degradation of one device parameter to be determined based on an age value derived from another parameter. In yet another aspect, a degraded device is modeled as a fresh device with a voltage source connected to a terminal.

The invention relates to the technical field of wireless communication, and aims to provide a method which is used for adjusting the sending rate and the sending power of remote TDMA wireless transmission to ensure that the sending rate and the sending power can quickly give response to link quality changes, thereby effectively improving the link throughput rate and reducing equipment power consumption as much as possible. The order to achieve the aim, the technical scheme of the invention is that: a method for combined adjustment of the adaptive rate and the power of a remote WiFi link comprises the following steps of: detecting a functional relation between physical layer information of received signals and wireless network properties and equipment energy consumption first; and then selecting proper sending rate and power for the next time slot according to the physical layer information of a frame received by the last time slot. The method is mainly applied to wireless communication and wireless networks.

The invention discloses a method and a system for judging road traffic states. The method and the system use a plurality of traffic parameters as a basis for judgment, simultaneously establish a functional relation aiming at different road sections and preset the weight so as to improve the accuracy of the traffic state judge. The method comprises the following steps of: (1) selecting a plurality of traffic parameters; (2) through the sampling analysis of the traffic parameters of the road section, setting the functional relation between the plurality of the traffic parameters of the road section and crowding coefficients which correspond to the traffic parameters, and setting weighted values occupied by the plurality of the traffic parameters in the crowding degree judge of the road section; (3) in the end of each state judge period, acquiring the plurality of the traffic parameters of the road section in real time, and according to the set function, calculating the crowding coefficients which correspond to each traffic parameter; (4) carrying out a weighted average operation on the weighted values of each parameter and the crowding coefficients which correspond to the traffic parameters so as to obtain an average crowding coefficient; and (5) comparing the threshold values of the average crowding coefficient and the crowding coefficients so as to judge the road traffic state.

The invention relates to a prediction method for battery life, wherein the method is used for predicting service life of a soft packaged lithium ion battery. The method comprises the following steps that: a functional relation between a battery capacity conversation rate and a number of times for battery charge and discharge is obtained, wherein the functional relation is expressed as: yx=a*ebx+c; besides, x is a number of times for charge and discharge and is a positive integer, yx is a battery capacity conversation rate, and a, b, and c are constant parameters correlated with the battery service life; and then according to the functional relations, the number of times for charge and discharge is calculated on the basis of a minimum capacity conservation rate. According to the invention, a capacity conservation rate of a battery is introduced into a mathematical formula to calculate a number of times of battery charge and discharge, so that the number of times of battery charge and discharge that means battery life and the residual number of times of battery charge and discharge that means residual battery life are obtained and testing time is substantially saved; besides, the method has advantages of rapidity and simpleness.

An effective method enhances energy saving at low load in a resonant converter with a hysteretic control scheme for implementing burst-mode at light load. The method causes a current controlled oscillator of the converter to stop oscillating when a feedback control current of the output voltage of the converter reaches a first threshold value, and introduces a nonlinearity in the functional relation between the frequency of oscillation and said feedback control current or in a derivative of the functional relation, while the control current is between a lower, second threshold value and the first threshold value, such that the frequency of oscillation remains equal or smaller than the frequency of oscillation when the control current is equal to the second threshold value. Several circuital implementations are illustrated, all of simple realization without requiring any costly microcontroller.

Touch sensitivity is enabled using a touch system that comprises a panel configured to conduct signals, e.g. by TIR, along detection lines across a touch surface. A signal processor operates to obtain observed values for the detection lines, and identify an interaction pattern on the touch surface as a solution to an optimization function that comprises an aggregation of differences, for each detection line, between the observed value and a projected value, which is given by a projection function that defines a functional relation between the interaction pattern and the projected value for each detection line. The signal processor implements a normalization to ensure that the interaction pattern indicates weak touches even in the presence of strong touches. The normalization involves computing a respective normalization value for each of the differences as a function of the observed value for the respective detection line; and applying the respective normalization value so as to normalize the respective difference in the optimization function.

The invention discloses a method for recognizing a plurality of touch points on an infrared touch screen, comprising the steps of: starting the infrared touch screen, driving an infrared emitter and an infrared receiver and forming transverse and longitudinal infrared arrays by corresponding scan; determining the transverse coordinates sets and longitudinal coordinates sets of all touch points, driving the infrared emitter and the infrared receiver, forming an infrared array with the functional relation of that y(x) is equal to f(x) in the touch area by corresponding scan, gaining a set of function value that y(x) is equal to f(x) of the touch points in the touch area, through calculating the sets of two scans by a controller, gaining the coordinates of all touch points and disposing and removing false touch points. The invention can complete the detection of a plurality of touch points without changing the hardware structure of existing touch screen, has no incorrect area of multi-point detection at four corners of the screen body, has higher sensitiveness to adjacent multi-point detection, higher resolution, short scan time and quick response.

The invention relates to wind speed and direction measurement technology, and aims to provide an anemoclinograph wind meter with high precision, good stability and low cost. The anemoclinograph wind meter comprises a wind measuring head and a signal processing device, wherein the wind measuring head consists of a shell, pull pressure sensors and a support bar; a horizontal circular section in the hollow shell is distributed with three pull pressure sensors with the same specification, which are symmetrically distributed at an interval of 120 degrees around a center of a circle; one end of each pull pressure sensor is fixed on the inner wall of the shell, while the other end is fixed on the support bar; the shell is not contacted with the support bar; wind pressure born by the shell is gathered on the support bar through the sensors, so the resultant force of the pull pressure of the sensors corresponds to the wind pressure; and the pressure direction indicates the wind direction, and the pressure and the wind speed have a certain functional relation which depends on the shape and size of the shell and can be calculated through a fluid mechanics theory or obtained through wind tunnel tests. The anemoclinograph wind meter can be used for wind generating systems, and also can be applied to the fields such as meteorology, transportation and the like.

The invention discloses a revolution controlling method for a crane. The method is characterized by comprising the following steps of: 101, pre-storing a corresponding functional relation between load parameters and revolution currents; 102, acquiring a current load parameter; and 103, obtaining a revolution current value corresponding to the acquired current load parameter according to the functional relation and controlling the output of the revolution current. In the revolution controlling method provided by the invention, load-related parameters are designed into a revolution controlling system, so that different revolution currents can be output under control according to different load parameters, a revolution speed adapting to a loading condition is obtained and revolution control is automatically adjusted according to the change of the loading condition by using the revolution controlling system. The invention also provides the revolution controlling system and a crane comprising the same.

The invention discloses a method for setting stop stations of an urban bus line, relating to the technical field of urban bus programming. The method comprises the following steps of: establishing a multi-target programming model through the functional relation between the setting of the bus stop stations as well as an averaged passenger bus travel time, an averaged bus running time and a unit-length bus service cover area; and solving by adopting a correctional vector estimating genetic algorithm to obtain an optimum bus stop station setting scheme. The method in the invention fully takes the influence of the setting of the bus stop stations on passengers, bus operations and urban bas systems into account and ensures that the cover area of the bus service is as large as possible under the condition of ensuring that the passenger bus travel time and the bus running time are as short as possible. Compared with the prior art, the method greatly improves the setting reasonableness and accuracy of the bus stop stations and has the important significance on the urban bus programming.

The invention provides an online SOC estimation method for a lithium battery. The online SOC estimation method comprises the following steps: step (1) establishing an SOC model of a battery by using an improved ampere-hour integration method; step (2) establishing a second-order RC equivalent circuit model of the battery and establishing an equivalent discrete state space model of a battery system; step (3) obtaining a functional relation between an open-circuit voltage of the battery and the SOC of the battery through experiments to obtain an initial value of the SOC; step (4) finally, estimating the SOC of the battery by using an extended Kalman filter algorithm. The online SOC estimation method provided by the invention compensates the capacity of the battery by considering influences of temperature, discharge current and cycle number in the process of generating a SOC equation; the selected second-order RC equivalent circuit model has relatively high precision and is easier to implement in engineering; the initial value is periodically calibrated to reduce an error, thereby making the precision of the estimated value higher while increasing a convergence speed of the extended Kalman filter algorithm.

The invention discloses a method for calculating the conductor temperature of a cable. The method comprises the following steps: calculating a relation expression between a calculated value of the conductor temperature of the cable in a steady state and a heat-conductivity coefficient of a structural material of each layer of the cable by using a thermal-circuit method; calculating a functional relation between the heat-conductivity coefficient of the structural material of each layer of the cable and a corresponding sensitivity by using a sensitivity principle, and calculating the value of a sensitivity corresponding to the heat-conductivity coefficient of the structural material of each layer of the cable according to the functional relation; and adjusting the value of a selected heat-conductivity coefficient according to the value of the sensitivity, then calculating the conductor temperature of the cable according to the adjusted value of the heat-conductivity coefficient. The invention also provides a device for calculating the conductor temperature of the cable. By using the technology of the invention, the conductor temperature can be calculated accurately and the current-carrying capacity of the cable can be assessed accurately; and the calculated value of the conductor temperature of the cable is significantly improved on the basis of a calculated value stipulated in IEC (international electrotechnical commission) standards, thereby avoiding the occurrence of a problem that a result of the conductor temperature of the cable, calculated according to the IEC standards, has an excessive margin and a large error; and the method and device disclosed by the invention provide references for the real-time monitoring of the cable and the improvement of transmission capacity and operation of the cable.

The invention relates to a method for determining a stable formation domain for radial-axial ring rolling. The method comprises the following steps of: establishing a mathematically functional relation among every process parameter for the radial-axial ring rolling, namely, feeding speed vf of a core roller, growing speed vD of a ring blank, revolution speed n1of a driving roller, the feeding speed va of a tapered roller, the revolution speed na of the tapered roller and retreating speed vw of the tapered roller; determining a value range of key process parameters, namely the feeding speed vf of the core roller, the feeding speed va of the tapered roller and the growing speed vD of the ring blank; and acquiring the stable formation domain for the radial-axial ring rolling. The method has the advantages of providing important basis for optimal design and precise control in the radial-axial ring rolling process, shortening production cycle, reducing cost, and providing important guarantee for obtaining qualified product quality.

The invention discloses a method and a device for determining the water saturation of a stratum, and belongs to the field of oil well logging technologies. The method includes selecting series representative cores of a measured region, and measuring values of porosities POR of the series cores and values of specific resistance R<w> of saturated stratum water of the cores; creating a functional relation m(POR, R<w>) among bond indexes m of the cores, the porosities POR of the cores and the specific resistance R<w> of the stratum water; creating a functional relation n(R<w>, POR) among saturation indexes n, the porosities POR of the cores and the specific resistance R<w> of the stratum water; solving the water saturation S<w> of the stratum by the aid of an Archie water saturation interpretation model. The device comprises a selecting module, a parameter measuring module, a bond index creating module, a saturation index creating module and a saturation computing module. The method and the device have the advantages that the functional relations among values of the bond indexes m, values of the saturation indexes n, the porosities POR and the specific resistance R<w> of the stratum water are created, so that the values of the bond indexes m, the values of the saturation indexes n, the porosities POR and the specific resistance R<w> of the stratum water are relevant to one another, and the computed water saturation of the stratum is accurate and reliable.

The invention relates to an intensity ratio temperature measurement method based on broadband fluorescence spectrum, which mainly makes use of a phenomenon that an intensity ratio of two wavelengths selected on a broadband fluorescence emission spectrum band varies along with temperature. When the method is used for temperature measurement, two proper wavelengths are selected in an emission spectrum band wavelength range of special broadband fluorescence material, the fluorescence emission intensity ratio of the two wavelengths is calculated, the functional relation between the intensity ratio value and the temperature value is a sensing equation, a fluorescence intensity ratio value at unknown temperature is a sensing signal, and when the signal is inputted to the sensing equation, a to-be-measured temperature value is obtained. The invention provides a new fluorescence intensity ratio temperature measurement method, the method is not limited to use a discrete spectral line emission spectrum for limited several rare earth ions in the traditional fluorescence intensity ratio temperature measurement technology, and thus the fluorescence intensity ratio has a wider selectable range than a temperature measurement sensitive material, and the cost is lower.

The invention relates to the technical field of fine blanking, in particular relates to a wear prediction method for fine blanking dies based on a finite-element technique and an artificial neural network. The method provided by the invention comprises the following steps: building a finite-element analysis model, namely, simulating a fine blanking process on a finite-element analysis and calculation platform, and calculating the wear extent of a fine blanking die in the fine blanking process by using an Archard wear model; building a neural network model, namely, training a designed neural network model by using a finite-element analysis result guided by an orthogonal experimental design so as to obtain a functional relation between the wear extent of the fine blanking die and fine blanking parameters; obtaining the fine blanking parameters, namely, obtaining the functional relations between the fine blanking parameters and the wear extent, blanking time, and the like of the fine blanking die according to geometrical relationships and production practices; and building and simulating a fine blanking wear prediction model. The method provided by the invention has the advantages of high prediction precision, fast response speed and strong operability.

The invention discloses an analysis method of crash sequence images of real vehicle components and an analysis system thereof are used in 3D motion analysis after real-time crash tests of the real vehicle components. The analysis method comprises the following steps: performing image motion reproduction on the crash sequence images to get dynamic deformation data and residual deformation data of a detection target in the images; tracking target identifications in the crash sequence images, getting and outputting the data of speed and acceleration of the target by analyzing the motion parameters of the target. The analysis method can help objectively and really get test data, get related kinematics parameters by a functional relation between coordinates and time of the target, and solve the measurement problems of parameters such as deformation, displacement, velocity, acceleration and the like in high-speed crash course.