36results about How to "Flexible compensation" patented technology

A method for overcoming the drawback in a fiber CPA laser system that includes a process of generating a large negative TOD by implementing an AODS in a pulse shaper as a dispersive component. The AODS is implemented to arbitrarily modulate both the spectrum shape and phase to control with controllable amplitude to generate different orders of dispersions including a large negative TOD for compensating the positive TOD generated by the pulse stretching and amplification processes. The AODS, implemented as a dispersive component, can be an active and controllable dispersive component to generate adjustable levels of dispersions for flexibly compensating any order of dispersions generated in the amplifier chain including the nonlinear phase shift. The AODS implemented as a dispersive component can be an active and programmable dispersive component to interactively generate adjustable levels of dispersions in response to output laser amplitude and pulse shape measurements for flexibly compensating any order of dispersions generated in the amplifier chain including the nonlinear phase shift to achieve the shortest pulse duration.

The invention discloses a triangular connection type comprehensive compensation system integrated with a cascaded active filter and a reactive compensator. The system comprises triangular connection type N-grade cascaded converters and a three-phase filter inductor connected with each N-grade cascaded converter; triangular connection type thyristor reactors and star-shaped connection type thyristors are used for switching the reactive compensator composed of fixed capacitors; and the triangular connection type N-grade cascaded converters and the reactive compensator are connected in parallel between a connection node and a ground node of an input power grid voltage and a load. According to the system provided by the invention, reactive power and harmonic current in a medium-voltage power grid are subjected to dynamic compensation and the efficiency of the power grid is improved; when the system is used for compensating, the system has no negative influences on the power grid, and has advantages of stable system, simple structure, strong stability and flexibility in compensation.

The invention provides a wattless current tracking method of a static var compensator based on power balance, which comprises the following steps: firstly, sampling three phases of phase voltage and phase current of the low voltage side of a transformer; calculating wattless power required by a load; using the calculated wattless power as the wattless power output reference valve of STATCOM; and calculating the pure wattless reference current required to be output by STATCOM through combining the voltage of a compensating point so that the compensated wattless power is balanced with the wattless power required by the load when the actual output current equals to the pure wattless reference current. The pure wattless reference current carries out dq0 decomposition, the wattless component of the total reference current can be extracted, and the PI link output for controlling the direct current capacitance voltage of the STATCOM is used as wattful component of the total reference current, so the wattful component and the wattless component of the current can respectively carry out current PI control, and the output of the STATCOM can be controlled. In the invention, the setting of the compensating point of the STATCOM is not limited by the load current measuring point, and the compensating point can be flexibly set at each side of the transformer, so the size of the output voltage and the compensating current of the compensator can be reasonably selected.

An electronic parking brake device may include: a gear unit driven by an actuator; a rotating rod connected to the gear unit; a push rod unit configured to pressurize one or more shoes while moved in connection with the rotating rod; a clutch unit disposed to interfere with a moving line of the gear unit, and configured to apply a rotational load to the gear unit while abutting on the gear unit, when the gear unit is rotated at a present angle; and a controller configured to control the operation of the actuator according to the load applied to the actuator.

The invention discloses a coaxial two-way external pressure type anti-twisting expansion joint. The coaxial two-way external pressure type anti-twisting expansion joint is composed of inner tubes, outer joints, corrugated tubes, inner joints, a key, an outer tube and pins jointly. The inner wall of the middle section of the outer tube is fixedly connected with the key which is arranged in the axial direction. The inner tubes extend into an inner cavity of the outer tube from the two ends of the outer tube respectively. The inner joints, the corrugated tubes and the outer joints are arranged on the overlapping sections between the inner tubes and the outer tube in a sleeved mode to form axial compensation assemblies which are independent of one another, wherein the inner joints, the corrugated tubes and the outer joints are sequentially connected in a sealed mode. The outer wall of each inner joint is provided with an axial open slot matched with the key. The inner joints and the key move relatively to form an axial compensation assembly displacement track structure. Orifices in the two ends of the outer tube are in sealing connection with the matched outer joints respectively to form two symmetrically-arranged axial compensation assembly integrated structures. The coaxial two-way external pressure type anti-twisting expansion joint is simple in structure, high in integration level and capable of conducting independent one-way compensation and synchronous two-way compensation. Built-in coaxial displacement tracks are coaxial, do not influence axial compensation and have an anti-twisting function, so it can be guaranteed that the corrugated tubes only conduct axial displacement movement and the service life of the expansion joint can be prolonged.

The invention discloses a jacketed type corrugated pipe compensator which comprises an inner compensator body, an outer compensator body, ring plates and a lug plate, wherein the inner compensator body and the outer compensator body are coaxially sleeved with each other, and the inner compensator body and the outer compensator body are positioned and connected through the ring plates and the lug plate; the inner compensator body comprises an inner corrugated pipe and an inner pipe opening, the two ends of an inner middle connecting pipe are coaxially and sequentially connected with the inner corrugated pipe and the inner pipe opening in a sealing mode respectively, and the inner wall of the inner corrugated pipe is fixedly connected with a flow guide pipe in the medium flow direction; the outer compensator body comprises an outer corrugated pipe and an outer pipe opening, and the two ends of an outer middle connecting pipe are coaxially and sequentially connected with the outer corrugated pipe and the outer pipe opening in a sealing mode respectively; a pull rod penetrates through through holes uniformly distributed in the end faces of the ring plates and the end face of the lug plate, the two exposed ends of the pull rod are locked by means of nuts, and a direct movement tensile structure that the inner compensator body and the outer compensator body are oriented through the through holes of the lug plate is formed. The corrugated pipe compensator is of a jacketed type structure, on the basis that axial compensation is not influenced, the aim of carrying out heat preservation on or heating medium steam in the inner compensator body is achieved by means of heat provided by heat media during circulation inside a jacket, and it is guaranteed that production is conducted in order.

The invention discloses a DFIG unbalanced power grid voltage compensation method based on phase-locked-loop-free self-synchronization control, and the method comprises the steps: avoiding the introduction of a phase-locked loop by presetting a fixed rotation angular frequency dq coordinate system on the basis of conventional direct power control, and compensating a power grid voltage unbalanced component by adding a direct resonator, so multi-coordinate transformation is not needed. The system is simple in control structure, and can be used for quickly compensating when the power grid voltageis unbalanced and drops, so the power quality of a power grid is improved. Meanwhile, the method can flexibly set the compensation coefficient, can achieve the full-range compensation of the PCC voltage, and gives consideration to the power quality of a power grid and the operation performance of a unit.

The invention provides a harmonic compensation method based on an FPGA, and the method comprises the steps: constructing a harmonic compensation circuit in the FPGA, wherein the harmonic compensationcircuit comprises a correction waveform generation module, a correction waveform phase control module, a correction waveform amplitude control module and a summation module, all of which are sequentially connected. The harmonic compensation method comprises the steps of acquiring orthogonal waveform data of original waveform data by Hilbert transform, and acquiring harmonic waveform data of all orders by calculation according to the orthogonal waveform data; calculating a correction phase of each harmonic waveform in the correction waveform phase control module, and performing phase correctionon each harmonic by utilizing the correction phase; calculating a correction amplification factor of each harmonic waveform in the correction waveform amplitude control module, and multiplying the amplification factor by each harmonic waveform data; and carrying out summation operation on the harmonic correction waveform data of each order of amplitude control and the original waveform data. Thecompensation method provided by the invention has low sensitivity to the environment, and can realize accurate compensation of harmonic waves with pertinence to any frequency.

The invention relates to the field of medical apparatus and instruments, and in particular, relates to a sinusoidal elastic force amplification and force moment compensation device and method for a robot, wherein the device includes a frame for supporting a mechanical arm and also includes a cantilever joint force moment transmission mechanism, a sinusoidal conversion mechanism and an elastic force amplification mechanism. The method comprises the following specific use steps: S1, connection; S2, revolving; S3, rotation; S4, swing; S4, horizontal motion; and S5, elastic force amplification. The sinusoidal conversion mechanism and the elastic force amplification mechanism are matched for use, the complete compensation of the cantilever gravitational moment of the robot can be realized, thepower of a driven deceleration motor and the fluctuation of the driving torque when the robot configuration is changed are reduced, and the stability of the robot driving is improved; at the same time, by adjusting the gear group speed ratio and the spring stiffness of the sinusoidal conversion mechanism, the cantilevers with different weight can be flexibly compensated, the overall installation is more convenient, and the structure is compact.

The invention provides a composite surface type X-ray piezoelectric deformable mirror, which comprises a substrate and an optical reflecting film arranged above the substrate, wherein the upper surface of the optical reflecting film is divided into two mirror surfaces, and at least two types of piezoelectric ceramic sheets are arranged on at least one of the upper surface, the lower surface and the side surface of the substrate, so that the two mirror surfaces are respectively driven by the piezoelectric ceramic sheets to generate two required different surface types. According to the composite surface type X-ray piezoelectric deformable mirror disclosed by the invention, an active optical technology based on piezoelectric driving and a multi-surface type combined grazing incidence X-ray reflecting mirror system are integrated, and when an applied voltage is parallel to the electric polarization direction of each piezoelectric ceramic sheet, the piezoelectric stretching in the transverse direction of the piezoelectric ceramic sheet can drive the stretching of the optical substrate with the thickness changing along with the mirror length to generate local curvature needed in the meridian direction of the mirror length, so that the defect that the surface shape of the reflecting mirror is difficult to adjust is overcome; and finally, through the combination of the two surface types, an aberration-free focusing effect is realized, so that full-field imaging and focusing are realized.

An embodiment of the invention discloses an ELD (excess loop delay) compensation circuit. The ELD compensation circuit is used for carrying out ELD compensation on ELD time of a continuous time delta-sigma analog-digital converter and comprises a delay module and a compensation module. The delay module is used for selecting a time delay among a plurality of preset time delays and outputting received signals in a delayed manner on the basis of the selected time delay; the compensation module is used for carrying out ELD compensation according to the signals outputted by the delay module in the delay manner. The embodiment of the invention further discloses an ELD compensation method and the continuous time delta-sigma analog-digital converter.

The invention discloses a driving circuit of an organic light emitting display. The driving circuit comprises N stages of driving circuit units, wherein the nth (1<=n<=N, and n, N are integers)-stagedriving circuit unit comprises an nth-stage compensation circuit and a plurality of nth-stage pixel driving circuits; the nth-stage compensation circuit comprises a compensation signal generating module, a pull-down module and a plurality of compensation modules, and the compensation module and the nth-stage pixel driving circuits are connected to corresponding data nodes; when an nth-stage scanning signal is at high level, the nth-stage pixel driving circuits input actual data voltages into the data nodes; and when an (n+1)th-stage scanning signal is at high level, the compensation signal generating module is turned on and transmits a compensation signal to an nth-stage compensation node, and the compensation module compensates for the actual data voltage by means of the compensation signal. The driving circuit of the organic light emitting display compensates for data voltage jump caused by parasitic capacitance, and improves the precision of light emitting intensity of an organic light emitting diode.

The invention discloses an inter-phase crosstalk compensation method for measurement of polyphase power of a chip. The chip passes through a plurality of single-phase passages, and each single-phase passage adopts the mode of a current signal and a voltage signal to measure the polyphase power. The inter-phase crosstalk compensation method includes compensating single-phase active power and single-phase reactive power, and inversely compensating total active power and total reactive power. Namely, small-signal compensation is conducted on measurement of each phase of power, a certain number of inverse compensation is conducted on measurement of the polyphase power, and accordingly error change which is caused by crosstalk noises is offset, and the problem that a small signal in the chip is affected by the crosstalk noises easily so as to cause an error of power calculation is solved.

The invention discloses a multi-color super-resolution imaging system applied to a 4pi microscopic structure. The multi-color super-resolution imaging system comprises a light source module, a sampletable, an upper microscope lens, a lower microscope lens, a first quarter-wave plate, a second quarter-wave plate, a first dichroscope, a second dichroscope, a first light path reflex matching unit, asecond light path reflex matching unit, a first deformable mirror, a second deformable mirror, a first Babinet's compensator, a second Babinet's compensator, a beam splitter cube, a third light pathreflex matching unit, a fourth light path reflex matching unit, a polarization beam splitter cube, an eleventh reflector, a twelfth reflector, a ninth lens, a tenth lens, a rectangular prism, a thirddichroscope, an eleventh lens, a twelfth lens, a first imaging device and a second imaging device. According to the system, the unimolecule positioning technology and crosstalk among different fluorescent molecules are utilized, and in combination with the 4pi microscopic technology, multi-color three-dimensional super-resolution imaging of whole cells is achieved.

The invention discloses a wave compensation ship and a compensation method thereof.The ship comprises a ship-shaped main body used for sailing, a deck platform and compensation devices, the compensation devices are used for conducting wave compensation on the deck platform, the ship-shaped main body comprises a plurality of ship body units and buffer connecting devices, and the compensation devices are arranged between the ship body units and the deck platform; the buffer connecting device comprises a first servo cylinder, the first servo cylinder comprises a fixed pair and a movable pair, the movable pair is sleeved with a spring damper, one end of the spring damper is connected with the fixed pair, the other end of the spring damper is fixedly connected with the movable pair, the fixed pair is hinged to the side face of one ship body unit, and the movable pair is hinged to the side face of the other ship body unit. A plurality of mutually connected ship body units are arranged for compensating the deck platform, compensation is more flexible, buffer connecting devices are adopted between the ship body units, transverse compensation can be achieved through stretching and retracting of the buffer connecting devices, the compensation range is widened, and the stability keeping capacity of the ship body when the ship body encounters strong transverse storm waves is improved.

Disclosed in the embodiments of the present invention are a compensation method for user service experience and a controller. The method comprises: obtaining for a target user equipment (UE) a first user experience (QoE) value on an original service link; when said first user experience (QoE) value is smaller than a preset QoE threshold, calculating the difference between said QoE value and said threshold and setting the difference value as a second QoE value requiring compensation; determining at least one compensation UE, which may be in direct communication with the target UE, the total QoE value of said at least one compensation UE being greater than or equal to said second QoE value; sending a QoE compensation configuration instruction, causing a new service link to be established between said at least one compensation UE and the target UE, and providing QoE compensation to said target UE. The embodiments of the present invention provide smoother and more flexible QoE compensation. The present method responds quickly to real-time changes in demand and does not involve the margins of new stations, thus improving compensation in respect of user QoE.