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.

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.

An apparatus and method for transmitting a signal for optical network applications with automatic chromatic dispersion compensation. The apparatus includes a first optical transmitter. The first optical transmitter includes a first light source configured to generate a first laser signal in response to a first laser drive signal, a first data modulator configured to receive the first laser signal and a first data drive signal and output a first chirped return-to-zero signal, and a first signal source configured to generate a first non-return-to-zero signal. Additionally, the apparatus includes a first clock and data recovery system, a first data driver, a first adjustment system, and a first control system.

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 provides a focusing and leveling device which is used for the adjustment of a focal plane of a plane to be tested and the correction of a self zero plane. The focusing and leveling device comprises a light source module, an optical lens module, a tested object and a detector module, and is characterized in that the optical lens module comprises projection diaphragms, a focusing double-optical-wedge assembly, a projection optical assembly, a zero plane adjusting assembly and a detecting optical assembly, a light beam emitted from the light source module passes through the projection diaphragms, the projection optical assembly and first focusing double optical wedges, and then is reflected by the tested object so as to form a reflection light beam, and the reflection light beam sequentially passes through the projection optical assembly, the zero plane adjusting assembly and second focusing double optical wedges and then is received by the detector module. Meanwhile, the invention provides a focusing and leveling method.

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 an elastic shaft coupler. A plurality of first positioning holes (5) are formed in one end face of a driving shaft disc (3); top pressing parts (6), first springs (7) and balls (8) are arranged in the first positioning holes (5); the pore diameter of an end face, located on the driving shaft disc (3), of each first positioning hole (5) is smaller than the diameter of each ball (8); each top pressing part (6) is used for tightly pressing each first spring (7) on the corresponding ball (8); one part of each ball (8) stretches out of the end face of the driving shaft disc (3) and is embedded into a corresponding second positioning hole (9) to fit the end face of the driving shaft disc (3) and the end face of a driven shaft disc (4); one end of each second spring (12) is pressed into a spring positioning hole (12) in a one to one correspondence and the end faces of the other ends of the second springs (12) are fitted with the end face of the inner side of a sleeve body (10). According to the elastic shaft coupler provided by the invention, torque transmission is carried out through the ball so that overload protection of a torque can be realized; the shaft coupler is internally provided with an elastic sheet and the springs so that stable transmission of the torque can be effectively guaranteed.

The invention relates to a testing method for the field high-voltage dielectric dissipation of capacitive transformers, which adopts a frequency modulation series resonance set-up and a cordwood reactance for lap join compensation, three phases are connected in parallel and pressured at the same time, and the three phases are measured one by one or at the same time, thereby overcoming a plurality of defects of the testing power of the traditional method of large volume, cumbersome equipment, troublesome operations and certain influence on the onsite safe operation, etc. The whole testing device has the advantages of less parts, small volume, light weight and functions of anti-interference and testing three to-be-tested devices at the same time, thus being suitable for application on site.

The invention provides a control method for a cascaded H-bridge inverter. A second harmonic for compensating for a modulated wave of a normal module and a first harmonic for compensating for an amplitude limiting modulated wave of an overmodulation module are homogeneous, and have the same amplitude and opposite phase, it can be ensured that total alternating current output voltage of a cascaded H-bridge module does not contain compensated harmonics, and a compensation range is expanded, thereby expanding the operating range of a system. The invention also provides a controller for the cascaded H-bridge inverter, and the same technical means is adopted to expand the operating range of the system.

The invention relates to an elastic component for adjusting an axial clearance of a motor, which is padded at a tail end of a transmission shaft of the motor. One end surface of the elastic component is pressed against an inner wall of the motor, and the other end surface of the elastic component is pressed against shaft end gasket sleeved on the transmission shaft of the motor. Both end surfaces of the elastic component, which are pressed against the inner wall of the motor and the shaft end gasket respectively, are planes. Lateral surfaces connecting the two end surfaces on the elastic component are arc surfaces. The elastic component can compensate the clearance generated by assembly in the range of a certain force, and particularly realizes the adjustment of the axial clearance of the motor by matching the shaft end gasket. The elastic component has small size, realizes large compensation range, can realize zero-clearance assembly, and has simple structure and easy quantification production. Moreover, a reasonable section structure of the elastic component is utilized to make the change of the elasticity of the elastic component similar to linear change and make the axial movement change stably due to an axial force so as to reduce noise.

The invention relates to the technical field of display, and especially relates to a pixel circuit, a driving method, and a display device. The pixel circuit can comprise a first switching element, adriving transistor, a storage capacitor, a second switching element, and a light-sensitive element. The pixel circuit is large in compensation range, and ensures uniformity of display brightness of each pixel.

The invention relates to a control method of a reactive compensation device. The high precision single phase digital phase-locked loop based on a static reactive generator comprises the following steps: 1,load current momentary value is detected, a network voltage is an orthoscopic sine wave; 2,period average value is conducted on a direct current lateral capacitance voltage universal decimal classification (Udc), amplitude value of an active current is achieved through a digital phase-locked loop; 3,the load current achieved by sampling and the cosine of theta are multiplied and averaged in a period to extract a fundamental wave reactive current component; 4,the active current, the reactive current and a supply current are added to achieve a target current; 5,a pulse width modulation (PWM) convertor is controlled in a hysteresis comparison mode after an actual output current and the target current are compared. The control method of the high precision single phase digital phase-locked loop based on the static reactive generator has the advantages that complicated process of detecting the active current component and the reactive current component is avoided, process of detecting a harmonic wave is simplified, reactive compensation range is wide, and stability performance is good.

The embodiment of the invention provides a pixel driving circuit and a display panel. According to the pixel driving circuit, the pixel driving circuit of the 4T1C structure is adopted to effectivelycompensate for the threshold voltage of the driving transistor in each pixel, the compensation structure of the pixel driving circuit is simple, and the operation difficulty is low; and the thresholdvoltage of the driving transistor is compensated through the two compensation stages, so that the compensation range of the threshold voltage is relatively large, the brightness of the display panel is improved, and the service life of the display panel is prolonged.

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 discloses a weight compensation device on an underframe of an elevator carriage. Multiple balance weight blocks are arranged in a box body, the box body is matched with a connecting plate to clamp the underframe of the carriage, and the box body provided with multiple balance weight blocks is connected and fixed on the underfame of the carriage, thus the weight of the carriage can be compensated, the forward-backward gravity of the carriage is balanced, and abrasion of a guide shoe to the carriage is reduced, the balance weight blocks in an inner cavity can be increased or decreased by virtue of an opening of the box body, and the box body is matched with a connecting block to clamp the underframe of the carriage and be separated from the underframe of the carriage, thus the box bodies can be increased or decreased on the underframe of the carriage, the compensation range on the weight of the carriage is wider, and the forward-backward gravity of the carriage can be better balanced. The box body is fixed on the underframe by the way that the box body is matched with the connecting plate to clamp the underframe of the carriage, thus the box body can be conveniently mounted and fixed no matter the underframe of the carriage adopts a steel tube with a C-shaped cross section or the steel tube with a rectangular cross section, namely the balance weight blocks are mounted and fixed on the underframe of the carriage.

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 perceptual information compensation system and method based on vehicle-to-vehicle communication. Each vehicle in the system is provided with a communication module capable of broadcasting and data interaction; through the communication module, the vehicle broadcasts own GPS position information to surrounding vehicles and receives GPS position information broadcasted by other vehicles at the same time, The vehicle determines the relative position relation between other vehicles and the vehicle according to the GPS position information of the other vehicles to form a rough position range, a perception compensation range can be determined according to the rough position range, and then radar information and road image information in the perception compensation range are continuously obtained through radar and machine vision; the time and space fusion is carried out, and the accurate position of the target vehicle is obtained; the absolute position and the relative position of the target vehicle in the sensing range of the vehicle are obtained through coordinate conversion, the sensing information of the vehicle is compensated, and the sensing range and precision of the vehicle are increased.

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.