519 results about "Self correction" patented technology

The invention discloses a data validation, mirroring and error / erasure correction method for the dispersal and protection of one and two-dimensional data at the micro level for computer, communication and storage systems. Each of 256 possible 8-bit data bytes are mirrored with a unique 8-bit ECC byte. The ECC enables 8-bit burst and 4-bit random error detection plus 2-bit random error correction for each encoded data byte. With the data byte and ECC byte configured into a 4 bit×4 bit codeword array and dispersed in either row, column or both dimensions the method can perform dual 4-bit row and column erasure recovery. It is shown that for each codeword there are 12 possible combinations of row and column elements called couplets capable of mirroring the data byte. These byte level micro-mirrors outperform conventional mirroring in that each byte and its ECC mirror can self-detect and self-correct random errors and can recover all dual erasure combinations over four elements. Encoding at the byte quanta level maximizes application flexibility. Also disclosed are fast encode, decode and reconstruction methods via boolean logic, processor instructions and software table look-up with the intent to run at line and application speeds. The new error control method can augment ARQ algorithms and bring resiliency to system fabrics including routers and links previously limited to the recovery of transient errors. Image storage and storage over arrays of static devices can benefit from the two-dimensional capabilities. Applications with critical data integrity requirements can utilize the method for end-to-end protection and validation. An extra ECC byte per codeword extends both the resiliency and dimensionality.

The invention discloses a method for predicting the left capacity and the health status of a storage battery. According to the invention, predicting the left capacity of the battery based on an ampere hour integration method and an open-circuit voltage method is realized, an adjustment is carried out based on discharge currents and ambient temperature, a self correction is carried out in a process of continuous driving and influences from cell agedness on electric capacity prediction are corrected. Based on the working characteristic of a vehicle cell, a cell failure determination mode based on a combination of open-circuit voltage and ampere hour integration is put forward and the trouble of carrying out a check discharge test towards the cell is avoided. Experiments show that in the case of vehicle power storage battery which is not at a float status in a long term, the capacity obtained from the method has a high reliability. The invention is directed to the social background that motor-assisted bicycles are frequently used at present while most users know little about the cell status and has great application significances.

A method, apparatus, and article of manufacture, and a memory structure for accepting data input into a computer is disclosed.The method presents an independent component and a dependent component to the user. The independent component comprises an input area for accepting independent input data. The dependent component comprises a dependent component input area for accepting dependent component input data and is associated with a dependent component constraint that is at least partially dependent on the independent component input data. User input is accepted into the dependent component input area, and an assistance policy associated with the dependent component is followed when the user input violates the dependent component constraint. The article of manufacture comprises a program storage device tangibly embodying instructions for performing the method steps defined above.The apparatus comprises means for presenting the independent and dependent components described above, means for accepting user input into the dependent component input area, and means for following an assistance policy associated with the dependent component when the user input violates the dependent component constraint.

The invention relates to stereo projection systems for displaying stereopaired images on mirror-spherical or parabolic screens and for collectively watching a stereo effect without using stereo spectacles. Said invention makes it possible to continuously dynamically superimpose the projections of the left and right picture frames of a steropair with the user's left and right eyes, respectively. Such impositions are carried out simultaneously and independently for each viewer. The technical result is attainable by that the inventive stereo projection system comprises stereo projectors which are individually allocated to each viewer and in-series connected, a monitoring system for continuously and accurately determining the viewers' eye positions, a self correcting device, video-correcting devices, automatic drives for the mechanical self-correction of the stereo projectors and the system optical elements, units which are used for forming stereopair projected images in the stereo projector and which are coupled with the video-correcting device for the video-correction of the optimal parameters of the screen images. The inventive system makes it possible to carry out the self- and video-correction in an integral manner in such a way that the comfort of the stereo effect viewing is maximally satisfied.

The present disclosure relates to the use of hybrid predictive models to predict one or more of performance, availability, or degradation of a power plant or a component of the power plant. The hybrid predictive model comprises at least two model components, one based on a physics-based modeling approach and one based on an observational or data-based modeling approach. The hybrid predictive model may self-tune or self-correct as operational performance varies over time.

The invention relates to a unidirectional reliable transmission method and a transceiving device based on data packages, belonging to the field of computer networks. In the method, a transmitting end firstly segments an information data block into data package sequences, classifies the data packages, covers erasure correcting codes and carries out coding to generate a redundancy packet covered by each subcode, then carries out cyclic redundancy code (CRC) coding on each data package, finishes the packaging of the data packages, carries out forward error correction (FEC) coding inside the packages on all data packages and finally transmits data into a receiving end; and the receiving end firstly carries out caching on data packages, FEC decoding inside the packages on all data, sequencing on the data packages and verifying by CRC codes, judges whether the data packages lose or not by detecting package numbers and carries out package loss recovery if information data packages lose. The invention solves the technical field of not being capable of carrying out self-checking and error self-correction based on data package transmission under a unidirectional channel and can correct in-packet information errors inside the packages and recover continuous package loss.

The invention discloses a self-correction method for remaining capacity estimation of a lithium iron phosphate power battery. The conventional method cannot meet national standard well. According to the self-correction method disclosed by the invention, compensation and correction are performed on the basis of estimating the remaining capacity of the lithium iron phosphate power battery by using an ampere-hour method; and according to the characteristic that voltage of the lithium iron phosphate power battery abruptly changes at the end stage of charging or discharging, the actual remaining capacity SOC (State Of Charge) is corrected when dV / dSOC' is detected to be greater than or equal to 0.05, so that accumulative estimation error existing during independent use of the ampere-hour method is reduced. The self-correction method is based on the ampere-hour method, is simple and easy and is easier to apply and generalize. Meanwhile, the invention also provides a calculation method of aging rate gamma. By continuously updating the aging rate, the error for estimation by using the ampere-hour method is reduced again.

Aspects for validating access point locations in a wireless network are described. The aspects include performing a scan in a validating access point for another access point in the wireless network. Location data of a detected access point is utilized in the validating access point to direct self-correction of current location data of the validating access point.

The invention provides a system for numerical control (NC) workbench error self correction based on machine vision. The system comprises an X-Y-Z-coordinate motion workbench, an image collecting system is arranged on a motion body of the X-Y-Z-coordinate motion workbench, a calibration plate is arranged on an objective table of the X-Y-Z-coordinate motion workbench, and an industrial computer is connected with the image collecting system. The invention further provides a method for NC workbench error self correction based on the machine vision. The method comprises the following steps: controlling the motion body and a high-resolution industrial camera to move, and collecting sequential images; obtaining a current absolute coordinate according to the imaging data of the motion body at different positions, comparing with a movement directive the encoder feedback value of a servo motor, and obtaining positioning error compensation values; and continuously conducting positioning detecting at different positions, and enabling the positioning error compensation values of all positions to be stored into a databank. According to the system and the method for NC workbench error self correction based on the machine vision, the defects of the prior art are overcome, self calibration and compensation can be conducted to the X-Y positioning error of the whole workbench, and positioning accuracy is markedly improved.

The invention discloses a self-correction method of a multi-input multi-output radar system array error, relating to the radar technical field. The method aims to carry out self correction of the reliant amplitude and phase error of a receiving array azimuth on the premise that the transmitting array of a multi-input multi-output radar system. The implementation process of the method is as follows: firstly, by means of the two corrected transmitting array elements of the multi-input multi-output radar system, orthogonal signals are transmitted; then, the echo signals of the transmitting array elements are separated by means of the orthogonality of transmitting signal through adopting a matched filtering method; an auto correlation matrix and a cross correlation matrix are established by means of the echo signals; a real guide vector and a target angle of an array are estimated by means of a rotary invariant subspace method; finally, by means of the real guide vector and the target angle of the array obtained through estimation, the array azimuth reliant amplitude and phase error can be corrected. The self-correction method can be used in the array error correction field of a multichannel radar system.

A method, apparatus, and article of manufacture, and a memory structure for accepting data input into a computer is disclosed. The method comprises the steps of presenting a component to the user, wherein the component includes an input area for accepting the input data, and the component is subject to a constraint for the data, accepting user input into the component input area, and following an assistance policy associated with the component when the user input violates the value constraint. In one embodiment, the value constraint for the input data is organized according to the component content type. In another embodiment, the method comprises the steps of defining a component comprising an input area for accepting input data, associating the component with a value constraint according to a content type of the input area, and associating the component with an assistance policy selected from a set of assistance policies. The article of manufacture comprises a program storage device tangibly embodying instructions for performing the method steps defined above. The apparatus comprises a means for presenting a component including an input area for accepting user input from the user, wherein the component is subject to a constraint for the input data according to component content type, means for accepting user input into the component input area, and means for enforcing an assistance policy associated with the component when the user input violates the value constraint.

A method of navigation includes providing an angular rate sensor and a direction-of-gravity reference. The method also includes determining bias error of the angular rate sensor about a vertical axis based on data substantially from the angular rate sensor and from the direction-of-gravity reference. In one embodiment, the first angular rate sensor is moved from a first position around a substantially horizontal axis to a second position around the substantially horizontal axis. The first angular rate sensor provides angular rate data for attitude at the first position and for compass heading at the second position. Data from the first angular rate sensor and from the direction-of-gravity reference is processed with a program for determining a bias error correction for the first angular rate sensor while the first angular rate sensor is in the first position. Bias error correction determined while the first angular rate sensor is in the first position is used to correct angular rate of the first angular rate sensor while the first angular rate sensor is in the second position.

The invention discloses a self-correcting phaselocked loop frequency synthesizer capable of realizing frequency band selection, composed of a phaselocked loop and a self-correction loop; wherein the phaselocked loop is formed by connecting a phase detection discriminator, a charge pump, a loop filter, a voltage-controlled oscillator and a frequency divider in sequence, the self-correcting loop is formed by connecting a phase detection discriminator, a trigger, a controller, a voltage-controlled oscillator and a frequency divider in sequence, and the phaselocked loop and the self-correcting loop share the same phase detection discriminator, the same voltage-controlled oscillator and the same frequency divider. The invention realizes center frequency correction by regulating one group of fixed capacitor of voltage-controlled oscillator, so that widen frequency tuning range can be obtained under lower gain of voltage-controlled oscillator, thus error caused by making process of integrated inductance and variable varactor can be compensated, phase noise of phaselocked loop frequency synthesizer is reduced, and implementation of single chip phaselocked loop frequency synthesizer by adopting CMOS technology can be realized.

The invention discloses a control method for a vehicle air suspension; the invention takes the electric control device of a hardware part as the core and is configured with components such as various external sensors, an air spring, an air valve, and an adjustable shock absorber, and the like; the software part comprises signal detection, data processing and secondary calculation, a control method and control output; and firstly different working models are judged by calculating the variance of the input vehicle body height and the vehicle speed; open-loop control and a neural network are used for realizing online self-correction function; the electric control device controls the implementation of the air valve according to the air charge and discharge time which is obtained by the neural network, and then the air molar concentration and the deviation quantity in the spring are obtained by calculation; and finally a detail control signal is obtained. The control method causes the vehicles to be controlled flexibly under different pavement conditions, has appropriate flexibility and damping performance under various road conditions, effectively solves the conflicts when parameters are matched to be suitable for various road conditions, and improves the handling performance, the safety, the comfort and the off-road performance of the vehicles.

The invention discloses a permanent magnet synchronous motor maximum torque per ampere control method based on parameter self-correction. Real-time estimation is carried out on change condition of motor parameters (permanent magnet flux linkage, d-axis inductance and q-axis inductance) through utilization of a feedforward compensation control module; further online correction is carried out on themotor parameters in a torque equation; an electromagnetic torque model comprising accurate motor parameter information is obtained; a torque to current angle change rate is directly solved through utilization of the model; further an MTPA (Maximum Torque Per Ampere) angle is computed; and precise maximum torque per ampere control is realized. When motor operation condition is changed, according to the method, the MTPA angle can be directly solved through mathematical operation, so influence of system bandwidths does not need to be taken into consideration; an algorithm simple; computing speedis fast; dynamic performance is relatively good; a motor is enabled to work at the maximum torque per ampere operation point all the time; influence of the operation condition and motor parameter change is avoided; and relatively good parameter robustness and dynamic response characteristic are achieved.

The invention relates to the technical field of optical fiber communication, and particularly discloses a method for calibrating, compensating and self-correcting parameters of an optical module. The method comprises the steps of: (1) parameter calibration, i.e., reading read-out values of each monitored parameter of the optical module at different temperatures, acquiring corresponding actual values, obtaining a calibration formula and calibrating each monitored parameter by the calibration formula; (2) parameter compensation, i.e., by using a module output at the normal temperature as a reference value, regulating parameter setting of an optical module register to enable an actual module output to be approximate to the reference value, and fitting into a compensation formula; and (3) parameter self-correction, i.e., comparing an output value of each calibrated parameter with an ideal value, and if a large deviation exists, fine regulating the parameter according to a deviation direction, correcting an output effect, and regulating a parameter value of the compensation formula in the step (2). According to the method disclosed by the invention, workload of a worker is reduced, and accuracy and reliability of each parameter index of the optical module are improved.

A divider is disclosed herein. The divider includes a sequence of divide stages programmably coupled to provide a variety of divide ratios. The divider also includes one or more multiplexers to feedback the output of a divide stage to the input of a divide stage earlier in the sequence of divide stages. The divider may also include duty cycle correction circuitry and self correction logic to correct abnormal logic states. The divide stages can operate in synchronism with each other. Multiplexer functionality, self correction circuitry functionality, and divide stage functionality may be implemented in a combination latch circuit.

Methods and systems for providing an aligned bank of images (e.g. for a panoramic display obtained by a scanning or moving camera) are disclosed that allow updating of the bank of images as new images are obtained; display of the original images stored in the bank as a mosaic according to any desired zoom; determination and display of the best mosaic view for a desired zoom; recall of the original images from the bank; and production of a mosaic that is free of accumulated stitching errors without imposing limitations on the way the camera scans. The methods and systems herein disclosed further have the ability to anchor the bank of images to the actual ground coordinates. The key to the method is inclusion of an iterative self-correcting procedure that reduces the accumulated errors as new images are added to the bank.

The invention discloses a Raman related double-wavelength light source self-correction distributed optical fiber Raman temperature sensor comprising a Raman related double-wavelength optical fiber pulse laser module, an integrated optical fiber wavelength division multiplexer, two optical fiber photoelectric receiving and amplifying modules, a digital signal processor, a display and intrinsic temperature measuring optical fiber, wherein the Raman related double-wavelength optical fiber pulse laser module comprises a driving power supply, an electronic switch, a main laser and a secondary laser. The Raman related double-wavelength light source self-correction distributed optical fiber Raman temperature sensor can correct random loss caused by bending or pressing and stretching temperature measuring optical fiber and optical cables which are used on site by self and overcomes temperature measuring errors caused by nonlinearity when an anti-stokes Raman signal channel is demodulated by astokes Raman reference path in a temperature measuring system. The Raman related double-wavelength light source self-correction distributed optical fiber Raman temperature sensor has low cost, simplestructure, good signal to noise ratio and high reliability and is suitable for monitoring online temperature in intermediate and short ranges of 100m-15km.

The invention relates to the field of intelligent control over equipment, in particular to an intelligent alternating current contactor capable of being controlled digitally and dynamically in the whole process. A digital chip is used for realizing closed-loop control over the speed in an attraction process of the alternating current contactor (based on coil current falling edge slope), impact energy of a movable / static iron core and a movable / static contact is controlled directly, and bouncing of the iron core and the contact in the attraction process can be reduced substantially; the attraction and supporting process works in a current closed loop chopping mode, chopping frequency is adjusted automatically, and voice frequency noise is prevented from occurring; meanwhile, attraction and supporting currents can be kept stable in a wide input voltage range, and therefore energy-saving silent closed loop operation can be realized; a disjunction process applies direct current negative voltages to the two ends of a coil after rectification and filtration, so that the coil current is made to descend quickly, an electromagnetic system is demagnetized quickly, and the contact is disjunctive quickly at a moment before zero; the intelligent alternating current contactor also has a self correction function of zero-current disjunction, and therefore the problem that control over zero-current disjunction fails due to disperse movement of the contactor, abrasion of the contact and other factors can be solved.

The invention discloses a grinding and polishing pad for a cured grinding material based on thermal initiation curing and a preparation method thereof, applied to the fields of precise and super precise grinding and polishing processing. The grinding and polishing pad is characterized in that a grinding material layer (1) contains the following components in percent by mass: 1-40 percent of grinding material with the granularity of 50 nanometers to 40 micrometers, 10-60 percent of prepolymer of polyacrylic ester, 0.5-7 percent of free radical / anions / oxidation-deoxidation thermal initiating agent, 0-2 percent of grinding material surface modifying and dispersing agent, 0-5 percent of accelerator, 0-20 percent of performance tuning additive and 5-40 percent of activated thinner of esterified acrylic acid. The preparation method of the grinding and polishing pad comprises the following steps of: (1) sufficiently and uniformly mixing raw materials; (2) preparing a polishing pad mould and preparing an abrasive particle layer by mould pouring, heating and curing; and (3) bonding the grinding material layer with an elastic or (and) rigid layer by using a bonding agent according to requirements to obtain the grinding and polishing pad required by the invention. The grinding and polishing pad prepared by adopting a thermal initiation curing method has stable processing performance, high processing efficiency and functions of hydrophily and self-correction and is suitable for precise and super precise processing.

A calibration device for use in a radio receiver enables receiver self-calibration and self-correction of inbound RF signals. The calibration device includes an estimation module for receiving a sample digital packet and calculating imbalance parameters as a function of a portion of the sample digital packet. The calibration device further includes a correction module for applying the imbalance parameters to a received digital packet of an inbound RF signal to produce a corrected digital packet. The received digital packet may be a portion of the sample digital packet, the complete sample digital packet or a new packet.

The invention provides a near-field calibration method for relative amplitude and phase characteristics of spherical surface array antenna channels, and aims to provide a method with few calibration source and capable of automatically performing self-correction on the relative amplitude and phase characteristics. The near-field calibration method is characterized in that: calibration frames distributed around a spherical surface antenna array plane are set up on the periphery of a phased-array antenna and a calibration frame is set up at the center of the phased-array antenna, thus a conformalspherical surface array distribution model for antenna unit approximate uniform distribution is formed; optical equipment is used for performing high-precision measurement on a coordinate position ofeach calibration antenna relative to a central point of the spherical surface array antenna, and a spatial distance and an axial included angle between each array element on the spherical surface array antenna and each calibration antenna are calculated; and a calibration reference signal generated by calibration test equipment is used for calibrating uplink / downlink channels of the spherical surface array antenna, and amplitude / phase characteristics of element antenna channels are obtained through deducting relative amplitude and phase characteristics of the antenna and amplitude / phase changes introduced by the spatial distances and axial deflection between each calibration antenna and each array element.

The invention discloses an ACC / AEB system based on machine learning. The ACC / AEB system comprises an environment perception module, a data fusion module, a machine learning and decision controlling module and an execution module. The technical scheme is adopted to obtain control parameters adapted to driving habits of a driver by integrating a convolutional neural network with an ACC / AEB control algorithm and training and learning continuously, also to realize self-learning and self-correction during operation of ACC / AEB, namely, to self-learn operating conditions not encountered and self-correct unsatisfactory operating conditions, to continuously correct a weight value between each neuron and each parameter to output optimal control parameters, to realize intelligent vertical control, and to achieve comfort, safety and robustness.

The invention discloses an indoor multi-mobile-robot cooperative system based on a fuzzy algorithm and two-dimensional code self correction. The system comprises multiple rotor bodies and two-dimensional codes distributed at different indoor positions. Each of the two-dimensional codes comprises a QR code which represents the position coordinate of each two-dimensional code in an indoor two-dimensional coordinate system. Each of the robot bodies is provided with a single chip microcomputer, an acceleration meter module, a gyroscope module, a two-dimensional code recognition module, a communication module, and an ultrasonic sensor. The system has the low cost, the efficient path planning can be realized, multiple robots are in cooperative operation and the conflict is avoided, and the working efficiency is high.

The invention discloses a longhole axis straightness measuring device based on self correction and a measurement method thereof. The measuring device comprises a tubular travelling mechanism and a self-centering rotary mechanism which is arranged on the front end of the travelling mechanism. In the invention, large-range measurement is realized by the travelling mechanism and the self-centering rotary mechanism and provides an effective technical means for correcting the precision of deeper bores. In addition, the self-centering rotary mechanism adopted by the invention realizes the continuous scanning of an inner section circle by the laser rotation principle, thus effectively reducing error resource and improving measurement accuracy. The measurement device of the invention can finish measuring in short time, effectively saves measurement time, has simple operation and good usability and can utilize a processor to carry out synergy processing of data so as to realize measurement automation.

The enclosed loop control system for gas fuel to jet successively in several points includes three parts of sensors, enclosed control unit (ECU) and executing mechanism. The sensors collects signals and transmits the signals to the ECU, the ECU performs precise calculation to control the operation of the executors, and the executors perform the timely and quantitative fuel jetting. In the enclosed loop control system, the ECU compares the data the oxygen sensor obtains with target value, and performs self correction and feedback correction to raise air / fuel ratio controlling precision. The timely and quantitative gas supply can eliminate fuel gas backing and fuel waste caused by gas valve superposing angle, raise the mixed gas uniformity and work homogeneity of the cylinders, improve the mixed gas controlling precision of the engine and reduce tail gas exhaust.