106results about How to "Large compensation range" patented technology

The invention discloses a crane device and a compensation method with a multi-degree-of-freedom active wave compensation function in the field of marine ships. The lower part is a circular static platform fixed on the deck; The moving platform is fixedly connected to the crane. Six servo cylinders are connected between the circular static platform and the circular moving platform. Each of the six servo cylinders is connected to a corresponding electro-hydraulic servo valve. The electro-hydraulic servo valves are serially connected in series Connect the power amplifier and D/A module to the motion controller, and the attitude sensor is installed in the center of the circular static platform; the attitude sensor transmits the measured roll, pitch and heave values ​​of the ship caused by wind and waves to the motion control The motion controller first obtains the motion values ​​of the six servo cylinders, and then obtains the wave compensation value opposite to the motion value. The six electro-hydraulic servo valves output the corresponding flow and pressure according to the wave compensation value to control the corresponding six Servo cylinders telescopic and sway to compensate for roll, pitch and heave.

The invention discloses a marine dining table with a six-DOF (degree of freedom) wave active compensation function and a compensation method. The marine dining table is characterized in that a rotary platform parallel to an upper platform is arranged right above the upper platform, and a table top is fixedly connected right above the rotary platform through table legs; the center of the rotary platform is connected with an upper end of a vertical transmission shaft, the lower end of the transmission shaft extends out of a center hole in the upper platform with clearance and is coaxially and fixedly connected with an output shaft of a hydraulic motor; an angle sensor is arranged the lower end of the transmission shaft, five servo cylinders are connected between the upper platform and a lower platform, one servo cylinder is vertically connected to centers of the upper platform and the lower platform, and the other four servo cylinders are uniformly arranged in the circumferential direction of the edges of the upper platform and the lower platform and are mounted in an inclined manner; the vertical servo cylinder compensates heaving motion, the four inclined servo cylinders compensate swaying motion, surging motion, heaving motion, rolling motion and pitching motion, and the hydraulic motor compensates yawing motion, therefore, one safe and stable dining table is provided when a ship is in a swinging state.

The invention discloses an OLED pixel circuit, a display device and a control method. The OLED pixel circuit comprises an organic light emitting diode, a driving transistor, a first switch unit, a grid electrode connecting a data signal output terminal with the driving transistor, a second switch unit, a source electrode connecting a power source signal output terminal with the driving transistor, a compensating circuit connected with the grid electrode of the driving transistor and used for maintaining the voltage of the grid electrode of the driving transistor in the light emitting stage to enable the current flowing through the organic light emitting diode to be unrelated to the threshold voltage Vth of the driving transistor and a reference signal generating module used for generating a reference signal for being used by the compensating circuit according to the current threshold voltage of the driving transistor, wherein the voltage of the reference signal and the threshold voltage meet at least one come-into-effect condition enabling the compensating circuit to come into effect. The OLED pixel circuit, the display device and the control method enlarge the compensating range of the compensating circuit.

An integrated circuit device includes at least one controllable oscillator including a first control port and at least one further control port, at least one frequency control module including an output arranged to provide a frequency control signal. The at least one controllable oscillator further includes at least one compensation module including an output arranged to provide at least one compensation signal. The at least one compensation module includes an integrator component arranged to receive at an input thereof a signal that is representative of a difference between the indication of the frequency control signal and a reference signal, and to output an integrated difference signal. The at least one compensation module is arranged to generate the at least one compensation signal based at least partly on the integrated difference signal output by the integrator component.

The invention discloses a hybrid compensation circuit and method for OLED pixel, by using a pixel internal driver circuit (100) of 4T1C structure to compensate threshold voltage of driving TFT using the source follow approach to achieve fast compensation; and in driving light-emitting phase, using an external compensation circuit (200) to detect the current flowing through the OLED (D1), comparing, computing and storing the difference between the current flowing through the OLED (D1) and a pre-defined current; when the corresponding row of pixel internal driver circuits (100) entering the threshold voltage programming design phase again, performing compensation on the data signal (Data), correcting compensation result so that the current flowing through the OLED (D1) is closer to the pre-defined current to achieve large compensation range.

A carrier wave frequency offset compensation method, an apparatus and a receiving system are disclosed. The carrier wave frequency offset compensation method comprises the following steps of aiming at each sweeping frequency point in a sweeping frequency scope, calculating a signal intensity indication value of a receiving signal respectively, wherein the sweeping frequency point is used for adjusting a frequency of a receiving-end local oscillator signal; based on the signal intensity indication value and a frequency value of each corresponding sweeping frequency point, determining an estimation value of the carrier wave frequency offset; based on the estimation value of the carrier wave frequency offset, adjusting the frequency of the local oscillator signal so as to realize compensation to the carrier wave frequency offset. Further, through a fine compensation method of the carrier wave frequency offset, the fine compensation is performed on the carrier wave frequency offset after the compensation. Under the condition that the carrier wave frequency offset is large, estimation and compensation can be performed on the carrier wave frequency offset effectively. Under a small bandwidth work mode of a low pass filter, the large carrier wave frequency offset can be compensated. Receiver performance is increased and simultaneously a carrier wave frequency offset compensation scope can be effectively expanded.

The invention discloses a multi-lens aerial camera shooting stabilized platform. The multi-lens aerial camera shooting stabilized platform comprises a suspension arm mechanism, a camera shooting platform, a gyroscope, cameras arranged inside the camera shooting platform, and a camera shooting control device. The suspension arm mechanism comprises a first rotating assembly and is connected with the camera shooting platform through the first rotating assembly. A second rotating assembly is arranged inside the camera shooting platform to control the camera shooting platform to rotate in a second rotating plane which is perpendicular to the horizontal plane and a first rotating plane at the same time. The gyroscope is arranged on the camera shooting platform and is electrically connected with the first rotating assembly and the second rotating assembly. The camera shooting control device comprises a master control module, a transmission module, a bus module and a power module. Compared with the prior art, the multi-lens aerial camera shooting stabilized platform can automatically control the exposure of a digital camera, control a camera shooting image to be transmitted at a high speed in real time at the same time, and achieve transmission and switching efficiently and rapidly.

The invention relates to an active heave compensation system of an underwater robot. A hydraulic winch is fixedly connected to a deck of a mother ship, an armoured cable is wound on a winding drum of the hydraulic winch, the armoured cable is connected with a combination of a relay and the underwater robot through a fixed pulley, a sensor module is fixedly installed on the fixed pulley and sequentially connected with a signal processing module, a control unit, a hydraulic driving system and the hydraulic winch. An existing hydraulic take-up and pay-off winch can be utilized for the active heave compensation system, additional power equipment does not need to be arranged, and the work space for the deck of the mother ship does not need to be enlarged either. Besides, because the rotation range of the hydraulic winch is wide, the compensation range is wide; meanwhile, violent collision between the underwater robot and the relay is avoided in the releasing or retracting process. Compared with a passive compensation mode of a pneumatic-hydraulic energy accumulator, the active heave compensation system of the underwater robot has the advantages that heave compensation efficiency can be effectively improved, and the active heave compensation system is easy to operate, convenient to obtain in the respect of engineering and capable of being applied to high-precision heave compensation under significant sea conditions.

The invention relates to a multi-lens aerial automatic camera shooting stabilized platform. The multi-lens aerial automatic camera shooting stabilized platform comprises a suspension arm mechanism, a camera shooting platform, a gyroscope, cameras arranged inside the camera shooting platform, storage cards arranged inside the cameras, a power supply unit, a control unit, a data transmission unit and an alarm. The suspension arm mechanism comprises a first rotating assembly, and the suspension arm mechanism is connected with the camera shooting platform through the first rotating assembly to control the camera shooting platform to rotate in a first rotating plane which is perpendicular to the horizontal plane. A second rotating assembly is arranged inside the camera shooting platform to control the camera shooting platform to rotate in a second rotating plane which is perpendicular to the horizontal plane and the first rotating plane at the same time. The gyroscope is arranged on the camera shooting platform and is electrically connected with the first rotating assembly and the second rotating assembly to control the first rotating assembly and the second rotating assembly to work.

The disclosure relates to the technical field of displaying, especially to a pixel compensation circuit, a pixel driving circuit compensation method, and a display device. The pixel driving circuit compensation method comprises: at a light-emitting stage of a pixel driving circuit, an electrical signal of a first pole of an electroluminescent element is detected and an electrical compensation signal is calculated based on the electrical signal; at a light-emitting stage of a pixel driving circuit, a brightness signal of the electroluminescent element is detected by a photosensitive detecting element and an optical compensation signal is calculated based on the brightness signal; and a comprehensive compensation signal is generated according to the electrical compensation signal and the optical compensation signal and a signal of a control terminal of a drive transistor is controlled based on the comprehensive compensation signal. The compensation range is large, the compensation precision is high, and the driving speed is fast; and real-time compensation of the electroluminescent element is realized to ensure the uniformity of display brightness of all pixels.

The invention discloses an image anti-shake method, electronic equipment and a storage medium. The electronic equipment has an optical anti-shake mode and an electronic anti-shake mode, and the methodcomprises the steps: employing the optical anti-shake mode to control a shooting module for shooting, and obtaining the measurement offset of the center of a lens of the shooting module and the current working temperature of the shooting module through measurement; correcting the measurement offset based on a preset offset correction strategy and the current working temperature to obtain a real offset of the center of the lens; and performing electronic anti-shake processing on the shot image by adopting an electronic anti-shake mode based on the real offset of the center of the lens. Therefore, when the anti-shake mode of EIS + OIS is in use, the real offset is obtained by correcting the measurement offset of the center position of the lens, and the electronic anti-shake effect can be improved by performing EIS anti-shake processing on the shot image based on the real offset, so the electronic equipment has the advantages of eliminating motion blur by OIS anti-shake and enlarging thecompensation range by EIS anti-shake.

The invention relates to a distribution network voltage low-frequency oscillation suppression method. The method comprises the following steps of: connecting static var generator (SVG) devices in parallel to a power grid by using reactors or directly, detecting interharmonic current in the power grid, and causing the SVG devices to output the interharmonic current by using a harmonic current control link to change the equivalent impedance of a system to suppress distribution network voltage low-frequency oscillation phenomena. In the method, fully-controlled converter SVG structures are adopted, command current is output by a given SVG, and the equivalent impedance of the power grid is changed by a proportion integration differentiation (PID) regulator, so the low-frequency oscillation of distribution network side voltage can be effectively suppressed, quick response and high tracking accuracy are ensured, and the stability and reliability of the power grid can be greatly improved.

The invention provides a floating disc edge sealing device of a floating-roof oil tank. The floating disc edge sealing device comprises a plurality of sealing sliding plates, sealing films and supporting strips. The sealing sliding plates are composed of upper segments and lower segments and sequentially arranged on the outer side of a floating disc in the peripheral direction of the floating disc so as to form a ring shape, the upper segments of the sealing sliding plates are bent towards the tank wall of the floating-roof oil tank, the top ends of the upper ends of the sealing sliding plates are connected with the edge of the floating disc, the lower segments of the sealing sliding plates are attached to the tank wall of the floating-roof oil tank, and the bottom ends of the lower segments of the sealing sliding plates are soaked into oil stored in the floating-roof oil tank. The sealing films are laid on the inner side faces of the sealing sliding plates. The supporting strips are located below the sealing films and used for supporting the sealing films so as to make the sealing films to be attached to the inner side faces of the sealing sliding plates, and the top ends of the supporting strips are connected with the edge of the floating disc. By means of the technical scheme, the floating disc edge sealing device has the advantages that active sealing performance is achieved, the compensation range is wide, and the sealing ability is high.

The invention provides a pixel point brightness compensation method and device, and aims to improve the brightness compensation effect of pixel points in a display screen; the compensation method comprises N calculation processes, wherein N>=2; each calculation process comprises the following steps: obtaining an image displayed by the display screen under different gray scale signals, and extracting the brightness of each pixel point under different gray scale signals; determining a reference pixel point, calculating a difference parameter of the brightness of each pixel point under differentgray scale signals with respect to the reference pixel point; fitting the difference parameter of each pixel point with the initial brightness of the corresponding pixel point under different gray scale signals, thus obtaining an initial brightness-difference parameter curve of each pixel point; calculating a compensation parameter of each pixel point; in the i th calculation process, i=2-N, the image displayed by the display screen under different gray scale signals is obtained by making compensation for the initial brightness of each pixel point under different gray scale signals according to the compensation parameter obtained in the i-1 calculation process.

The invention relates to a tap selection strategy of a phase-shifting transformer secondary winding under the unequal tap phase voltages. The unequal tap phase voltages refers to divide each phase voltage in a proportion of 1:1:1 ... (M+1), and the M refers to the number of taps of each secondary winding of a phase-shifting transformer; the selection strategy comprises steps that, S1, an unequal tap phase voltage output point distribution graph is drafted; S2, oc, od and of straight lines are drafted on the graph of the step S1; S3, the unequal tap phase voltage output point distribution graph is turned to a certain angle, and a ST commissioning voltage and PQ relation graph is drafted; S4, L1 and L2 straight lines in parallel with P and Q transverse and vertical axes are drafted; and S5, a target power area is set, a location position is analyzed by a control system when ST acts to a certain compensation voltage point, the next action strategy is carried out according to different positions, and a purpose that a compensation point is enabled to enter the target power area through the smallest tap switching times is realized. According to the tap selection strategy, the phase-shifting transformer secondary winding has large tap compensation capacity, high compensation precision is realized, selection is flexible, and a plurality of series compensation voltage outputs can be realized.

The invention discloses a pixel circuit, a driving method thereof and a display device. The pixel circuit comprises a write-in sub-circuit, a light-emitting control sub-circuit, a sensing sub-circuit,a driving sub-circuit and a light-emitting element, wherein the write-in sub-circuit provides a first reference voltage signal or a data voltage signal of a data line for a first node under the control of a first scanning line; the light-emitting control sub-circuit provides a signal of a first power supply voltage end for a second node under the control of a third scanning line; the sensing sub-circuit provides a second reference voltage signal of the sensing line for a third node under the control of a second scanning line; the driving sub-circuit performs voltage compensation on the thirdnode under the control of the first node and generates a first driving current for driving the light-emitting element to emit light. Internal compensation and external compensation can be realized atthe same time so that the compensation speed can be enhanced, the compensation range can be expanded and the display quality of the display device can be enhanced.