6results about How to "Good compensation" patented technology

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.

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.

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.