20results about How to "Good compensation" patented technology

The invention discloses an unbalance compensation method and system for an energy storage converter, and belongs to the field of power electronics and electric energy quality treatment. The system comprises a power instruction analysis module, a current reference generation module, a negative sequence current control loop module, a zero sequence control loop module, a positive sequence control loop module, a pulse width modulation module, a first conversion module and a second conversion module, the current reference generation module is respectively connected with the negative sequence current control loop module and the positive sequence control loop module; the third end and the fourth end of the negative sequence current control loop module are connected with the pulse width modulation module through the second conversion module; the third end and the fourth end of the zero sequence control loop module and the third end and the fourth end of the positive sequence control loop module are connected with the pulse width modulation module through the first conversion module. According to the method, the energy storage and compensation functions of the PCS can be seamlessly integrated under a unified control framework, so that the control system is greatly simplified, and the performance is remarkably improved.

The invention discloses a communication control method and device, electronic equipment and a computer readable storage medium, and relates to the technical field of communication, and the method comprises the steps: receiving CEC communication data, and carrying out the non-standard type recognition of the CEC communication data through a type recognition model if a non-standard behavior of the CEC communication data is detected, thereby obtaining a target non-standard type, and determining a non-standard compensation strategy according to the target non-standard type, and responding to the CEC communication data according to the non-standard compensation strategy to obtain a communication result. The effective period of the non-standard behavior analysis and compensation strategy is shortened, the non-standard behavior response efficiency is improved, the recognition and compensation of the novel non-standard behaviors are improved, and the user experience is improved.

The application provides a pre-processing method of to-be-compensated data, a picture compensation method and related equipment. The pre-processing method of to-be-compensated data comprises the following steps: acquiring first luminance data of a plurality of sub-pixels in a display panel when a to-be-compensated picture with a display gray scale less than or equal to a preset gray scale; determining first part sub-pixels and second part sub-pixels from the plurality of sub-pixels, adjusting the first luminance data of the first part sub-pixels to second luminance data, and adjusting the first luminance data of the second part sub-pixels to third luminance data; wherein the second luminance data is greater than the first luminance data, and the third luminance data is less than the first luminance data. By adopting the scheme of the application, more reasonable compensation data can be obtained when Mura compensation is performed, and a better compensation effect can be achieved.

This invention discloses a terahertz SAR imaging method based on total variational and Cauchy combined regularization: The data obtained after range compression and azimuth deskewing of the echo data received by terahertz SAR is used as the observation matrix, the Fourier transform matrix is ​​the coefficient matrix, and the image is the matrix to be recovered. Image recovery is modeled as an inverse problem, introducing Cauchy regularization to represent sparse features and total variational regularization to recover target structural features. An alternating minimization framework is used to solve the problem, obtaining an image estimate. The image estimate is combined with the original echo data to solve for the platform phase error estimate, which is then compensated into the observation matrix. The above steps are repeated to iteratively estimate the desired image and phase error to obtain a high-precision imaging result. This invention also provides a terahertz SAR imaging device based on total variational and Cauchy combined regularization. This invention can obtain high-quality focused images and has good compensation effects for both low-frequency motion errors and high-frequency vibration errors.

The inductive proximity switch temperature compensation circuit comprises an LC oscillation circuit, a power supply circuit, a rectifier filter circuit, a signal detection and processing circuit and a temperature compensation circuit; the LC oscillation circuit, the power supply circuit, the rectifier filter circuit, the signal detection and processing circuit and the temperature compensation circuit are installed in a shell; the signal output end of the LC oscillation circuit and the signal input end of the rectifier filter circuit are connected through a wire; the signal output ends of the temperature compensation circuit and the rectifier filter circuit and the signal input end of the signal detection and processing circuit are respectively connected through wires; and the power output end of the signal detection and processing circuit and the power input end of the relay are connected through a wire. The novel inductive proximity switch temperature compensation circuit can actively inject a compensation voltage with a specific function relationship with temperature into a later-stage signal processing circuit, and use the compensation signal to counteract the drift of the oscillation amplitude caused by temperature change, so as to stabilize the detection threshold at a constant level, thereby providing favorable technical support for stable operation of the inductive proximity switch.

The utility model discloses a valve core automatic torsion test equipment belongs to valve core torsion detection technical field. Valve core automatic torsion test equipment, including the mechanical arm of installation in the inside of cabinet and the test assembly of installation in the working end of mechanical arm, the test assembly is used to detect the valve core torsion, the test assembly includes the mounting bracket of installation in the working end of mechanical arm and the torsion sensor of fixed in the side of mounting bracket, the lower end of test axle of torsion sensor is equipped with test tooling, the utility model discloses through the mechanical arm drive test tooling cover sets in the valve core surface, makes servo motor drive torsion sensor's test axle and test tooling to rotate to the torsion data of valve core is tested to can accurate control the force size, improves the test accuracy, and can further improve the test efficiency to the valve core automatic test.

The invention relates to the field of batteries, and provides a battery monomer and a preparation method thereof, a battery device, a power utilization device and an energy storage device.The preparation method of the battery monomer comprises the steps that a battery cell assembly is provided, and the battery cell assembly is formed by laminating or winding a positive plate, a diaphragm and a negative plate; providing a shell, and placing the battery cell assembly in the shell; providing an electrolyte, and injecting the electrolyte into the shell; carrying out a formation step; the positive plate comprises a positive active component, the positive active component comprises a modified MXene material, and the modified MXene material comprises an MXene matrix and an Al2O3 / AlF3 gradient coating layer coating the MXene matrix. And the electrochemical stability, the cycle life and the safety performance are remarkably improved at least on the basis of keeping the high conductivity of the material.

A kind of plane optical element surface distortion surface shape adaptive compensation device and method, belong to high-energy laser technical field.The device includes by a plurality of concentric circle ring and bottom closed disc base integrated gradually variable period ring structure, each ring radius and width gradually increase from inside to outside;Bottom surface rigid connection is on the back of optical element.When high-energy laser irradiation makes optical element temperature rise and produce surface thermal distortion, heat is conducted to period ring, period ring thermal expansion and exert opposite to the distortion direction gradually variable stress field on the back of optical element, realize adaptive compensation.This application does not need external control, only rely on structure itself thermal expansion and the reverse coupling of optical element thermal deformation, i.e.can significantly inhibit non-uniform thermal distortion, keep element surface flat, improve laser wavefront quality and system stability, with simple structure, fast response, easy to integrate advantage.

The invention relates to the technical field of bidirectional AC-DC converters, in particular to a single-phase bidirectional AC-DC converter based on power decoupling topology and a control method. The inverter has a rectification working mode and an inversion working mode, and comprises an alternating current circuit, an alternating current filter circuit, a conversion circuit, a power decoupling circuit, a direct current circuit, a sampling circuit, a control circuit and a driving circuit, wherein the control circuit is provided with a controller I, a controller II, a controller III and a controller IV, the controller I is used for controlling the output voltage of the direct-current circuit in a rectification working mode, and the controller II is used for controlling the output current of the direct-current circuit in the rectification working mode; the third controller is used for controlling the output current of the power decoupling circuit in a rectification working mode, and the fourth controller is used for controlling the output current of the alternating current circuit in an inversion working mode. According to the invention, the problem of suppressing single-phase power pulsation in bidirectional power conversion can be effectively solved.

This invention discloses a dynamic adjustment method for power stability of a mobile power bank based on time-series modeling, relating to the field of mobile power bank technology. The method includes: real-time acquisition of the output current and voltage waveforms of the mobile power bank within a continuous time unit; extraction of the periodic decay characteristics of the waveform oscillation frequency and the instantaneous response hysteresis characteristics during load abrupt changes; establishment of a power compensation function based on the correlation between the decay and hysteresis characteristics; prediction of the probability of load abrupt changes in subsequent time units using the compensation function; generation of dual adjustment parameters including amplitude compensation and phase calibration direction when a phase shift is detected between the current waveform oscillation frequency and the historical decay trajectory; real-time adjustment of the switching device conduction sequence based on the dual parameters; comparison of the actual output waveform with the expected trajectory of the compensation function after adjustment; and automatic backtracking correction of the decay rate weight coefficient when the deviation exceeds a threshold. This invention effectively suppresses voltage drops, overshoot, and high-frequency oscillations, ensuring stable operation of connected devices.

This invention discloses a method and apparatus for online monitoring of part dimensions during machine tool milling. The online monitoring apparatus includes: a pulse light source, a beam expander and collimator, a diffuser, a projection lens, and a surface array camera. The pulse light source, beam expander and collimator, diffuser, and projection lens are located on the same projection optical axis. Their positional relationship from upstream to downstream is: pulse light source, beam expander and collimator, diffuser, and projection lens. Two surface array cameras are located on opposite sides of the projection optical axis. Using the method and apparatus proposed in this invention, real-time dimensional measurement data of the machined part is directly monitored and fed back to the machine tool control system. Compared with the feedback of parameters such as position, speed, and acceleration in traditional closed-loop control strategies, this method better reflects the comprehensive machining deviations caused by multiple error sources such as thermal strain and mechanical wear, allowing for better compensation and correction, and improving machining accuracy.

The utility model relates to a three-way flange connecting piece with a connection compensation function. The three-way flange connecting piece comprises a three-way piece, three corrugated pipes, three flange pieces and three groups of supporting pieces, one end of the corrugated pipe is welded on a port of the three-way piece, and the other end of the corrugated pipe is welded with the flange piece; each supporting piece comprises two pairs of bottom supporting blocks and a pair of top supporting blocks; the two pairs of bottom supporting blocks are symmetrically arranged at the bottom of the three-way flange connecting piece. In the pair of bottom supporting blocks, any bottom supporting block is located at the bottom of the flange piece, and the other bottom supporting block is located at the bottom of the corresponding position of the three-way piece; the bottoms of all the bottom supporting blocks are provided with planes and are flush. Supporting rods are inserted into each pair of bottom supporting blocks and top supporting blocks, and the two ends of each supporting rod are sleeved with nuts in a threaded mode. According to the utility model, the quick and accurate connection with an external pipeline can be realized, the installation efficiency is improved, and the installation difficulty is reduced.

The invention discloses a power compensation method and device of an energy storage converter and electronic equipment, and relates to the field of electric power systems.The method comprises the steps that when it is detected that power grid voltage drops, the drop depth of the power grid voltage is detected; judging whether the drop depth of the power grid voltage is greater than a target threshold; when it is judged that the drop depth of the power grid voltage is larger than or equal to the target threshold value, the target reactive compensation amount of a first energy storage converter in the energy storage system is obtained, and power compensation operation is conducted on the first energy storage converter according to the target reactive compensation amount; when it is judged that the drop depth of the power grid voltage is smaller than the target threshold value, power compensation operation is carried out on a second energy storage converter in the energy storage system, and the second energy storage converter is a series energy storage converter. The technical problem that when the power grid voltage drops, a traditional energy storage converter power compensation strategy cannot effectively and rapidly increase the power grid voltage is solved.

Disclosed in the embodiments of the present invention are an audio processing method, a related device, a storage medium and a program product. The method comprises: acquiring target audio data to be processed and spectrum information of the target audio data, wherein an audio missing segment is present in the target audio data, and the spectrum information comprises spectrum features of context audio segments of the audio missing segment; performing feature compensation processing on the spectrum information of the target audio data according to the spectrum features of the context audio segments, so as to obtain compensated spectrum information corresponding to the target audio data; performing audio prediction by using the compensated spectrum information, so as to obtain predicted audio data; and compensating for the audio missing segment in the target audio data according to the predicted audio data, so as to obtain compensated audio data of the target audio data. By means of the present invention, the accuracy of the prediction and compensation of lost packet audio can be improved.

The invention provides a polish rod sealer sealing slip piston sealing device and method.The sealing device comprises a sealer shell, the sealer shell perpendicularly penetrates through a polish rod, sealing slip pistons are symmetrically arranged in the sealer shell along the polish rod, each sealing slip piston comprises a piston and a sealing slip, one end of each piston is fixedly connected with the corresponding sealing slip, and the other end of each piston is fixedly connected with the corresponding sealing slip. An eccentric hole is formed in the other end face of the piston, a metal shaft is eccentrically hung in the eccentric hole, and a piston guide mechanism is arranged between the piston and the sealing slip. The metal shaft and the sealing slip piston are in eccentric positioning connection, so that the sealing slip piston is prevented from rotating along with rotation of the metal shaft. The guide conical column and the guide groove are adopted, the copper pressing pieces are arranged on the upper face and the lower face of the sealing slip and connected through the fixing screw rod, after the sealing face and a polished rod are matched for sealing and abraded, the copper pressing pieces can be driven by the fixing screw rod to retreat along the guide groove through pressure, and therefore the compensation amount is large, and in the pushing process of a piston of the sealing slip, stress expansion is even, and the sealing effect is better.

This invention relates to the field of multi-UAV cooperative control technology and discloses a fixed-time neural adaptive formation control method for multi-UAVs to resist aerodynamic disturbances. A hierarchical controller architecture is constructed, with an outer loop of a distributed reference generation and safety tracking controller and an inner loop of a fixed-time terminal sliding mode controller with a cubic non-singular smooth switching mechanism. A fixed-time sliding mode surface with a cubic non-singular smooth switching mechanism is configured to achieve deterministic convergence. An adaptive RBF neural network is used to actively compensate for aerodynamic disturbances, and a safety mechanism based on obstacle functions is combined to constrain the UAV states within a safe set. Lyapunov analysis verifies the fixed-time stability of the system. Simulation results of six UAVs in formation show that the proposed method improves convergence speed by 29.6%, exhibits better robustness, and can achieve safe, accurate, and fast formation control of multiple UAVs under complex aerodynamic disturbances.

The application provides a gain compensation method, device, optical amplifier and storage medium, and belongs to the technical field of optical communication. The method is applied to an optical amplifier. In the method, after the power of input signal light changes, the power of pump light of the optical amplifier is adjusted based on power change information of the input signal light, the input signal light is amplified by using the pump light with the adjusted power, and the input signal light is gain compensated. In this way, the input signal light can be gain compensated only by detecting the power change information of the input signal light, the optical amplifier does not need to be in a full wave state for a long time, and therefore, the failure rate of the optical amplifier can be reduced.

The utility model discloses a harmonic reducer torque sensor, which comprises an elastic body, a double shear strain gauge, a signal amplification circuit board and a cable assembly, and is characterized in that the elastic body comprises a substrate, a first elastic body part, a second elastic body part and a third elastic body part which are integrally arranged, and the second elastic body part is uniformly provided with a plurality of shear beam arms along the circumferential direction; the double-shear strain gauge is arranged on the upper surface and / or the lower surface of the shear beam arm, an annular flange groove is formed between the second elastic body part and the third elastic body part, and the signal amplification circuit board is installed in the annular flange groove. The design of uniformly distributed shear beam arms is adopted, a flat symmetrical structure is adopted, the stress is uniform, the bending moment influence under torsion can be reduced, and the torsional rigidity is superior to that of a common bent beam structure. The strain gauges are pasted on the upper surface and the lower surface of the annular arm, so that better precision and compensation can be obtained through the bridging mode compared with the mode of pasting the strain gauges on one side.

The invention relates to the technical field of laser application, and discloses a laser optical path thermal drift compensation device based on a TEC and a piezoelectric module, and the device comprises a negative electrode, a semiconductor laser chip, a positive electrode, a thermoelectric refrigerating unit, a ceramic chip, a lens, a telescopic and deformable piezoelectric module, and a fixed pedestal. The system further comprises a control module, a light path detection sensor, a high-voltage driving circuit, a position sensor and a temperature sensor. A dual active compensation mechanism is adopted, and cooperative control is carried out on two thermal deformation sources of a laser and a lens at the same time: a thermoelectric refrigerating unit is responsible for stabilizing a laser source and fundamentally inhibiting temperature drift; the piezoelectric module dynamically compensates lens side deformation, the comprehensive stability performance of the system is remarkably improved, and the compensation effect is remarkably superior to that of a single means. The temperature control precision of the thermoelectric refrigerating unit can reach + / -0.1 DEG C, the piezoelectric module has nanoscale resolution and millisecond response speed, thermal deformation can be tracked and counteracted in real time, and long-term stability of an optical path is ensured.

This invention discloses a high-strength, multifunctional papermaking method for reconstituted tobacco filter material and its preparation method, comprising the following steps: first, tobacco stems and tobacco dust are cleaned, dried, and then air-jet pulverized to obtain ultrafine tobacco stem and tobacco dust particles; the ultrafine tobacco stem particles are extracted with hot water and filtered to produce tobacco stem pulp; external fibers are added and broken down to obtain external fiber pulp; the tobacco stem pulp is mixed with the external fiber pulp at 5%~50% of the total pulp dry weight, and a cationic retention aid is added to form a sheet base; the sheet base is coated with a coating solution made of tobacco extract concentrate, ultrafine tobacco dust particles, glycerol, and flavoring; and the finished filter material is obtained by hot air drying, slitting, and rolling. This invention achieves a synergistic improvement in filter material strength, harm reduction, flavor enhancement, and processing performance. The preparation process is simple, environmentally friendly, and has a high raw material utilization rate. The tensile strength of the filter material is increased by more than 30% compared with conventional products, and the adsorption rate of harmful substances is increased by more than 25%. It can be widely used in cigarette filters and tobacco product processing and has extremely high promotional value.