34results about How to "Improve compensation accuracy" patented technology

The invention discloses a white point color compensation method and device for a WOLED (White Organic Light Emitting Diode) device and a display device. The color compensation method comprises: detecting the aging degree of the WOLED device, and determining aging degree data of the WOLED device; comparing the aging degree data with a pre-stored compensation proportion database, and determining a compensation proportion corresponding to the aging degree data; and compensating the WOLED device according to the determined compensation proportion. Compared with the white balance compensation adopting a fixed compensation proportion in the prior art, the method of detecting the aging degree of the current WOLED device and compensating with the corresponding compensation proportion according to the aging degree of the current WOLED can realize accurate color compensation and improve the compensation accuracy, thus realizing white balance accurate compensation of the WOLED device under different aging degrees.

The invention discloses a topological structure and a control method of an improved SEN transformer. The topological structure of the improved SEN transformer consists of an SEN transformer and a unified power flow controller connected in series, wherein the SEN transformer is connected with an electric transmission line in series; a parallel connection variator VSC1 of the unified power flow controller is connected with the equivalent head end of a power distribution network transmission system in parallel; a parallel connection variator VSC2 of the unified power flow controller is connected with the equivalent tail end of the power distribution network transmission system in parallel. 360-degree discrete adjustable series connection voltage is realized through controlling a common on-load tap changer by the SEN transformer; 360-degree continuous adjustable series connection voltage is realized through controlling an electronic power switch by the unified power flow controller. The topological structure and the control method of the improved SEN transformer have the advantages that the voltage is continuously adjustable, the compensation accuracy is high, the switching vibration problem is avoided, and the like, and can be used for regulating and controlling the electric transmission line power flow distribution.

The invention relates to a method for stabilizing short-term wind power fluctuation of energy storage based on an adaptive neural network (ANN). A double-battery-pack energy storage system for stabilizing wind power fluctuation is designed on the basis of an online alternate charging or discharging operation mode of energy storage of two groups of batteries by considering reduction of short-term wind power fluctuation deviation wind power prediction by utilizing energy storage, and a design method of battery capacity is provided. Aiming at the strong randomness of short-term wind power fluctuation, in combination with ANN energy, when an object model is unknown, nonlinear mapping of input and output is established, the deviation of wind power grid connection and prediction is utilized to adaptively adjust a neuron input weight, and the method for predicting and stabilizing short-term wind power fluctuation by the two-battery energy storage system based on ANN is provided. The method can effectively save the cyclic service life of the energy storage battery, achieves the better tracking and prediction of the short-term wind power fluctuation continuous component of the wind power integration, reduces the impact on the frequency modulation from the short-term continuous unidirectional fluctuation of the wind power, and improves the frequency stability and operation economy of a wind power system.

The embodiment of the invention discloses a wind pressure control method, device and equipment and a storage medium. The method comprises the steps of obtaining current wind pressure strength in a smoke pipe; detecting whether the current wind pressure strength is within the range of rated wind pressure strength; and if it is determined that the current wind pressure strength is not within the range of the rated wind pressure strength, adjusting the current rotating speed of a fan, and returning to execute the operation of obtaining the current wind pressure strength in the smoke pipe so as todynamically control the wind pressure. According to the technical scheme, the wind pressure real-time adjusting is achieved, the control response speed is improved, and the wind pressure compensationprecision is improved.

The invention provides an ion signal intensity on-line automatic correction system and method. The correction system comprises a signal continuous monitoring program, an on-line automatic correction program, a voltage parameter control program, a power source module and a signal generation device. The automatic correction method uses the automatic correction system, an ideal signal value of a monitored ion is set through the signal continuous monitoring program, a current signal value generated by the signal generation device is obtained and then fed back to the on-line automatic correction program, the on-line automatic correction program feeds corrected voltage parameters back to the voltage parameter control program after certain comparison and computing, the voltage parameter control program is made to control the power source module to finish automatic boosting and reduction of voltage, the final result is that the next signal intensity obtained by the signal continuous monitoring program is closer to a preset value, and the value is fed back to the on-line automatic correction program. Operation is repeated in this way, and the collected signal values are always stabilized near the set value.

The invention discloses a control method for a multi-degree-of-freedom displacement variation compensation platform and a control system. The control method comprises a controller and a multi-degree-of-freedom platform, wherein the multi-degree-of-freedom platform comprises an upper platform, a lower platform and six actuators hinged between the upper platform and the lower platform, the actuatorsare driven to expand and contract through servo valves, the attitude of the lower platform is measured through an attitude sensor, the corresponding compensation amount Ki of the six actuators is obtained according to the expansion and contraction quantity [delta]di of the six actuators, Ki=-[delta]di, and then the six servo valves are controlled to respectively drive piston rods of the corresponding actuators to move until reaching the corresponding compensation amount Ki. The control method is used for performing PID closed-loop adjustment and correction on the prediction deviation betweena future motion curve and an actual motion curve and performing secondary correction on the prediction deviation between the future motion curve and the actual motion curve according to the actual displacement of the six actuators.

The invention discloses a pixel circuit, a display panel and display equipment, and the pixel circuit comprises a first transistor, a second transistor, a third transistor, a fourth transistor, a fifth transistor, a sixth transistor and a seventh transistor, a light emitting unit; the first pole of the second transistor is connected with the anode of the light-emitting unit, the second pole is used for inputting reference voltage, and the control pole is used for inputting first driving signals; a third transistor; a first electrode of the fourth transistor is connected with the data line, a second electrode is connected with the anode of the light-emitting unit, and a control electrode is used for inputting a second driving signal; and a capacitor connected between the control electrode of the third transistor and the second electrode of the third transistor. According to the pixel circuit, one-to-one voltage compensation is carried out on the driving transistors through the data lines, the compensation function is effectively optimized, the product yield is improved, line-by-line displacement design does not need to be carried out on the second driving signals, the layout space occupied by the pixel circuit is greatly reduced, and therefore the narrow bezel of a product can be achieved, and the cost can be reduced.

The invention relates to the technical field of display screens, and discloses a display screen box edge parameter correction method and device, equipment and a computer readable storage medium. The average value of the to-be-corrected parameters corresponding to the edge LED unit set is determined by determining the reference value of the to-be-corrected parameters of the box body, the edge LED unit set comprises a plurality of edge LED units, the edge LED units are LED units located in the edge area of the box body, and then the correction coefficient is determined according to the reference value and the average value. The to-be-corrected parameters of a plurality of edge LED units in the edge LED unit set are corrected according to the correction coefficient. The problem of low accuracy of the acquired parameter data of the plurality of LED units in the edge area of the box body in the prior art is solved.

The invention relates to a method and a tool for checking the forming quality of a cementing surface of a hyperboloid variable-thickness aluminum honeycomb. The method comprises the following steps: laying a lower skin on a cementing mold; laying a lower plate-core verification film on the lower skin; laying lower woven cloth along the surface of the outer contour of the lower plate-core verification film, laying upper woven cloth on the cementing area of a rear edge strip, a first rib, a second rib, a beam and an upper skin, laying an upper plate-core verification film along the surface of the outer contour of the upper woven cloth, laying the upper skin on the upper plate-core verification film, carrying out vacuum packaging on the whole aluminum honeycomb structural part, putting the aluminum honeycomb structural part into an autoclave, after high-temperature pressurization for a period of time, opening the autoclave, taking out the honeycomb structural part, and separating out the upper plate-core verification film and the lower plate-core verification film; observing the depth degree of extrusion traces on the upper plate-core verification film and the lower plate-core verification film to verify the forming quality of the cementing surface of the aluminum honeycomb, the situation that the skin is damaged due to instability and slippage of the aluminum honeycomb is prevented, and the matching precision and verification comprehensiveness are improved.

The invention provides a frequency offset adaptive tracking compensation method and device and user equipment. The method comprises the steps that when the signal-to-noise ratio of a received signal is higher than a first threshold value or the confidence coefficient of a frequency offset estimation value corresponding to the received signal is higher than a second threshold value, carrying out periodic sampling on the frequency offset estimation value corresponding to the received signal; training the sampled frequency offset estimation value to form a frequency offset estimation value changemodel; and when the signal-to-noise ratio of the received signal is lower than a third threshold value or the confidence coefficient of the frequency offset estimation value corresponding to the received signal is lower than a fourth threshold value, performing adaptive compensation on automatic frequency control by using a frequency offset estimation value change model. The performance of automatic frequency control frequency offset tracking of a mobile communication baseband system can be effectively enhanced, and the performance of automatic frequency control frequency offset tracking of amobile terminal under a low signal-to-noise ratio or a low confidence coefficient is mainly improved; and on the other hand, the frequency offset adaptive tracking compensation accuracy can be improved.

The invention provides a hardware implementation method and device for sample adaptive offset compensation filtering. The method comprises the following steps: respectively dividing a source image and a corresponding reconstructed image into a plurality of image blocks according to a preset size; the compensation value of the first image block under each color channel is calculated in parallel through the compensation filter circuit corresponding to each color channel, and the first image block is any one image block included in the source image; and compensating a reconstructed image block corresponding to the first image block in the reconstructed image according to the compensation value of the first image block under each color channel. Sample adaptive offset filtering is realized through a hardware circuit, then the optimal rate distortion value and the optimal compensation value in each mode are calculated in parallel through the circuit, and the optimal compensation value corresponding to the minimum optimal rate distortion value is selected from the optimal rate distortion values in each mode to compensate the reconstructed image, so that the compensation accuracy is higher, the calculation speed is high, the delay is low, and the real-time requirement of a hardware encoder is met while the ringing effect of the encoder is solved.

The invention discloses a local temperature compensation system for a preheating furnace of a mold, and belongs to the technical field of preheating furnaces. The invention solves the problems that the preset heating temperature of the preheating furnace cannot meet the requirement due to the influence of external factors, and the influence factors are not timely and effectively eliminated in the system, so that the temperature compensation is insufficient, and the heating effect is not good. Multiple groups of numerical values are collected, and temperature influence values are solved. Comparison values are obtained through calculation by adopting a calculation formula, and the comparison values internally cover the temperature influence values, so that the accuracy of adjustment values is higher, and the heating temperature of the preheating furnace is changed. Meanwhile, a monitoring terminal can monitor operation parameters of equipment in real time, so that external operators can know parameter information in real time, and the effect of rapid distribution is achieved. The temperature needing to be compensated is effectively compensated, so that a better preheating effect of the preheating furnace is achieved, a better compensation effect is achieved, and the compensation accuracy is higher at the same time.

The invention discloses a high-precision control method for a flexible wire transmission surgical instrument of a minimally invasive surgical robot, and relates to the field of medical robots. The problems that an existing control method for flexible wire transmission surgical instrument of minimally invasive surgery robot is limited in control precision, rough in operation and inconvenient to useare solved. Off-line identification of the surgical instrument is carried out in a simple and convenient mode, and the compensation accuracy is high. Specifically, hysteretic curves of a plurality ofinstruments are measured in advance, a universal hysteretic model of the instruments is obtained through polynomial fitting and maximum likelihood estimation, current data generated when a motor moves back and forth at a constant speed are identified through an FCN network before actual use, and the return difference is accurately extracted to adjust the amplitude of the hysteretic model, so thatthe fine control on the surgical instrument is realized. When used, an actuating motor only needs to reciprocate at a constant speed for multiple times in advance, so that the control method is veryconvenient, fine and smooth in compensation, high in accuracy and convenient to use. The invention is applicable to the field of medical robots.

The invention provides a wheel tooth gap compensation method, a system and a controller. The compensation method comprises the steps that a wheel tooth gap compensation strategy is entered when the output torque of a driving wheel is detected to be changed from zero to non-zero or is about to be reversed, at this time, the relative rotation speed of the driving wheel and a driven wheel is acquired, then the relative rotating speed is compared with a relative rotating speed target value, a bidirectional torque pulse sequence signal is output, the output torque of the driving wheel is adjusted according to the bidirectional torque pulse sequence signal until the relative rotating speed is detected to be zero, and the wheel tooth gap compensation is ended. According to the compensation method, the impact and rebound generated across the wheel tooth gap in the reverse process of the rotation direction of the driving gear can be eliminated.

The invention discloses a display apparatus and a method of compensating an image of a display panel using the same. The display apparatus includes a first compensator, a second compensator and a display panel including pixels. The first compensator generates a first compensation coefficient based on sensing data of a pixel of the pixels for a first grayscale value, generates a second compensation coefficient based on camera imaging data for a second grayscale value greater than the first grayscale value and compensates image data based on the first compensation coefficient and the second compensation coefficient. The second compensator compensates the image data by modeling sensing data of entire grayscale range based on sensing data of the pixel for a third grayscale value and a fourth grayscale value. The display panel displays an image based on the image data compensated by the first compensator and the second compensator.

The invention discloses a phase compensation circuit and method and an operational amplifier. The phase compensation circuit comprises an amplitude discriminator unit, an operational circuit and a phase shifter circuit. The amplitude discriminator unit is used for extracting amplitude information of an input signal and an output signal of the amplifier circuit and sending the amplitude informationto the operational circuit to obtain a first phase compensation voltage of the amplifier circuit, and the phase shifter circuit performs phase compensation on the output signal of the amplifier circuit according to the first phase compensation voltage. By means of the mode, the loop phase allowance and stability can be improved, and the compensation precision of closed-loop phase compensation isimproved.

The invention relates to a method and a tool for verifying the forming quality of the glued surface of a hyperboloid variable-thickness aluminum honeycomb. Lay a lower woven cloth on the outer contour surface of the board-core verification membrane, and lay an upper woven cloth on the trailing edge strip, the first rib, the second rib and the gluing area between the beam and the upper skin, along the outer contour of the upper woven cloth Lay the upper plate-core verification film on the surface, lay a skin on the upper plate-core verification film, vacuum-package the aluminum honeycomb structure as a whole and put it into an autoclave. After a period of high temperature and pressure, open the autoclave. Take out the honeycomb structure, disassemble the upper plate-core verification film and the lower plate-core verification film; observe the compression marks on the upper plate-core verification film and the lower plate-core verification film The degree of depth is used to verify the forming quality of the bonding surface of the aluminum honeycomb, to prevent the aluminum honeycomb from slipping and damaging the skin, and to improve the matching accuracy and the comprehensiveness of the calibration.

The invention relates to a digital compensation method and system for outputting scientific CCD video signals at a high speed, and the method comprises the steps: firstly deducing an equivalent circuit model of a CCD reading circuit at a charge transfer stage based on the CCD principle and an internal circuit schematic diagram, and determining the parameters of the equivalent circuit model by adopting an experiment calibration method based on the equivalent circuit model; determining a calibration scheme according to the equivalent circuit model with determined parameters, obtaining a compensation coefficient list of the CCD imaging system under different light intensity conditions through experimental calibration, and designing a light intensity quantification method according to the noise level of the CCD imaging system; and when the reading frequency is changed, enabling a compensation coefficient list corresponding to the reading frequency to only need to be derived according to the equivalent circuit model. According to the invention, the CCD pixel numerical attenuation problem caused by reading clock frequency increase can be compensated, and a clear light intensity quantification method, a correction coefficient derivation method and a numerical verification method are simple and efficient and have very high compensation accuracy.

The invention discloses a two-dimension angle-variable electronic belt scale weighing compensation method and system. The method includes: utilizing a method that cosine values of positive and negative angles are equal to acquire a datum offset angle; calculating compensation accumulation quantity Q according to the datum offset angle and angles between Y and Z directions and a horizontal straight line to correct compensation angle offset caused by actual stressed structure state of a scale frame for compensation. By the method, compensation accuracy is improved greatly. The system is characterized in that a load sensor, a speed sensor, a Z-direction angle sensor and a Y-direction angle sensor are all fixedly mounted on the electronic belt scale frame and all connected with a two-dimension angle-variable belt scale instrument. The problem of metering errors caused by changing of two-dimension inclination angle of an angle-variable electronic belt scale in the process of metering is solved effectively, and application range is wide.

The invention relates to a tone library generation method, a sound synthesis method and system, an audio processing chip, a computer readable storage medium and electronic equipment, and the tone library generation method comprises the steps: firstly solving a first amplitude spectrum for a windowed sound source audio frame, and updating an average amplitude spectrum through the first amplitude spectrum, solving the similarity of each wave crest greater than an amplitude threshold value in the first amplitude spectrum and a low-pass kernel, then selecting a maximum value in a result and the corresponding low-pass kernel and local maximum wave crest to form a similar data set, and then compensating a probability value in a probability table by using the similar data set to obtain a probability value, and then finding out a central frequency point, a bandwidth and a maximum amplitude for representing the common amplitude characteristic of the sound source signal from the compensated probability table and the average amplitude spectrum. Obviously, according to the timbre library generation method, the algorithm for generating the timbre library is greatly simplified, the timbre library generation efficiency is improved, and resources can be saved.

The invention discloses a quadrature amplitude modulation signal frequency offset compensation method and a quadrature amplitude modulation signal frequency offset compensation device, which are high in compensation accuracy. The quadrature amplitude modulation signal frequency offset compensation method is used for performing frequency offset compensation on a balanced constellation diagram, and comprises the following steps: (10) amplitude threshold determination: determining upper and lower thresholds of a normalized amplitude value according to orders of different modulation modes of QAM (Quadrature Amplitude Modulation); (20) reference complex value screening: performing modulus threshold comparison and complex value quadrant transformation on all complex values on an OFDM symbol 1 to obtain a complex value set for calculating a phase compensation factor; (30) complex number judgment: when the number of complex numbers in the complex value set is less than 4, skipping to (50) a phase compensation ending step, otherwise, continuing; (40) phase compensation processing: obtaining a phase compensation factor through calculation, and compensating the phase by using the phase compensation factor; and (50) ending phase compensation: outputting a complex value after phase compensation.

The invention relates to a cementing tool suitable for a control surface type remanufactured honeycomb structural part, the honeycomb structural part comprises a control joint, a suspension joint, a front beam, an upper skin, a lower skin, a rear edge strip, an end rib and a honeycomb core, and the front beam, the upper skin, the lower skin, the rear edge strip, the end rib and the honeycomb core are fixedly connected with the control joint and the suspension joint respectively. The cementing tool comprises a tool base, a control joint positioning tool which is arranged on the tool base and can be connected with a control joint, a suspension joint positioning tool connected with the suspension joint, a beam core mold positioning block, a rib core mold positioning block, a beam core mold is connected with the front beam, the rib core mold connected with the end rib, a beam outer cover in sliding connection with the beam core mold, and a rib outer cover in sliding connection with the rib core mold. The positions of an old front beam, an old control joint and an old suspension joint are fixed by fixing the positions of the control joint positioning tool and the suspension joint positioning tool, so that the positions of other newly-manufactured parts of the remanufactured honeycomb structural part are fixed, and the assembly adaptability and the cementing quality of the old parts and the cementing tool are improved.

The invention belongs to luminance uniformity automatic correcting system and method of an LED backlight used for a flat-panel LCD. The luminance uniformity automatic correcting system is characterized by comprising a luminance detector (7) electrically connected with an LED array (8), and an automatic current detection module (2) arranged in a current path between a power module (1) and the LED array (8), wherein the power module (1) is respectively connected with the current detection module (2) and a signal processing module (4); a path of the luminance detector (7) is provided with a datastorage (6) respectively connected with the current detection module (2) and the luminance detector (7); and the data storage (6), a data processor (5) and the signal processing module (4) are electrically connected in sequence and the signal processing module (4) is connected with the LED array (8) to realize the transmission of signal data of the system. The invention can solve the problem of efficiency drop difference of the LED for long time working, thereby ensuring the quality of the LCD.

The invention discloses a three-phase reactive power unbalance compensation method. An execution system comprises at least one group of capacitors capable of achieving division and compensation functions. The compensation method comprises the following steps: (1) collecting three-phase voltage and current values of a system power supply, calculating a reactive power value of each phase, and taking the minimal reactive power value as a reference value; (2) sequentially finding the difference between the reactive power value of each phase and the reference value, taking the comparative result of the difference value of each phase and a corresponding input threshold as a judgment condition of entering an input link, and if the different value of each phase is greater than the corresponding input threshold, entering the input link, or else, entering a removal link; (3) taking whether status words of dividing and compensating capacitors of which the input orders are set as the first group are completely input or not as the judgment condition of entering the removal link, and if so, entering the removal link, or else, entering an instruction sending link; and (4) in the sending link, taking the comparative result of the current status words of each group of capacitors and a corresponding backup word as the judgment condition of sending a switching instruction, if the current status words are consistent with the corresponding backup word, not sending the switching instruction, and if the current status words are not consistent with the corresponding backup word, driving split-phase switching.

A pixel circuit comprises a first transistor, a second transistor, a third transistor, a fourth transistor, a fifth transistor, a sixth transistor, a seventh transistor, a first capacitor, a second capacitor and a light emitting unit. Wherein the pixel circuit can prolong the compensation time to improve the compensation accuracy, and the light-emitting unit can be completely closed in the reset stage to improve the picture contrast.

The invention discloses an automatic feeding precision compensation mechanism of a numerical control machine tool. The automatic feeding precision compensation mechanism comprises a connecting plate used for installing a structure and a tool clamp arranged at the top of the connecting plate and used for clamping a workpiece, a supporting frame is fixedly connected to the top of the connecting plate, and a transmission motor located in the supporting frame is fixedly connected to the top of the connecting plate. The output end of the transmission motor is fixedly connected with a structure used for driving a screw to rotate, the top of the connecting plate is movably connected with the screw through a bearing, the top end of the screw sequentially penetrates through the supporting frame and the tool clamp and extends into the tool clamp, and the tool clamp is in threaded connection with the screw. The left side of the supporting frame is fixedly connected with a structure used for measuring a compensation value. The problems that the vertical height of a cutter is mostly adjusted according to a compensation mode in the prior art, the response efficiency is poor, an operator cannot master the distance of the cutter extending out of a main shaft, and the product feeding compensation precision is affected are solved.

The invention relates to a bonding tool suitable for remanufacturing honeycomb structural parts of rudder surfaces. The honeycomb structural part includes a control joint, a suspension joint, a front beam, an upper skin and a lower skin respectively fixedly connected with the control joint and the suspension joint. , trailing edge strip, end rib and honeycomb core, the bonding tooling includes a tooling base, a steering joint positioning tooling that can be connected to the steering joint, a suspension joint positioning tooling that can be connected to the suspension joint, and a beam core module positioning block arranged on the tooling base And the positioning block of the rib core module, the beam core mould connected with the front beam, the rib core mould connected with the end rib, the beam cover slidably connected with the beam core mould and the rib cover slidably connected with the rib core mould. By fixing the positions of the manipulation joint positioning tool and the suspension joint positioning tool, the positions of the old front beam, the old manipulation joint and the old suspension joint are fixed, so as to fix the positions of the rest of the new parts of the remanufactured honeycomb structure, and improve the relationship between the old parts and the glue. Assembly adaptability and bonding quality of connecting tooling.