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

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 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 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 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.

The invention discloses a control method and a control system for a multi-degree-of-freedom displacement change compensation platform, including a controller and a multi-degree-of-freedom platform. The multi-degree-of-freedom platform includes an upper platform, a lower platform, and a platform hinged between the upper platform and the lower platform. Six actuators, drive the actuators to expand and contract through the servo valve, measure the attitude of the lower platform through the attitude sensor, according to the expansion and contraction Δd of the six actuators i , get the compensation amount K corresponding to the six actuators i =-Δd i , and then control the six servo valves to drive the piston rods of the corresponding actuators until the corresponding compensation amount K i . It is used to perform PID closed-loop adjustment and correction on the predicted deviation between the future motion curve and the actual motion curve, and to perform quadratic adjustment on the predicted deviation between the future motion curve and the actual motion curve according to the actual displacement of the six actuators. Correction.

The invention provides an online automatic correction system and correction method for ion signal intensity. The correction system used includes a signal continuous monitoring program, an online automatic correction program, a voltage parameter control program, a power supply module and a signal generating device. The automatic calibration method is to use the above-mentioned automatic calibration system to set the ideal signal value of a certain ion monitored through the signal continuous monitoring program, and obtain the current signal value generated by the signal generating device, and then feed it back to the online automatic calibration program. After a certain comparison operation, the automatic calibration program feeds back the corrected voltage parameters to the voltage parameter control program, allowing it to control the power module to complete the automatic voltage rise and fall. The final result is that the next signal strength obtained by the signal continuous monitoring program is closer to the preset value, and feed the value back to the online automatic calibration program, and so on, so that the collected signal value is always stable around the set value.

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.

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.