7 results about "Loop shaping" patented technology

A video processing method is provided, comprising: performing a conversion between a codec representation of a video comprising one or more video regions and a video, wherein the codec representation includes side information of loop shaping (ILR) applicable to some of the one or more video regions, wherein the side information provides parameters for reconstructing video units of the video regions based on representations of video units in a first domain and a second domain, and / or parameters for scaling chroma residuals of chroma video units, and wherein the side information applicable to some of the one or more video regions is encoded and decoded without direct inheritance from other video regions.

This invention relates to a hysteresis modeling and loop-forming structured control method for piezoelectric actuators, comprising: constructing a piezoelectric actuator model using a Hammerstein structure; describing the uncertainty of the piezoelectric actuator model based on the v-gap metric, and setting open-loop amplitude constraints and the structure and parameter vector search domain of the controller based on the uncertainty description; setting initial weight functions, accuracy coefficients, and an initial controller, and constructing inequality constraints for the loop-forming system under the open-loop amplitude constraints; iteratively solving a first optimization problem and a second optimization problem under the inequality constraints until a preset iteration condition is met, obtaining the optimal weight function and the desired controller; if no solution to the optimization problem is obtained until the preset iteration condition is met, the open-loop amplitude constraints and the parameter vector search domain of the controller are reset, and the next round of iterative solution is performed until a solution is obtained. This invention achieves significant improvements in dynamic response, control accuracy, and robustness.

The application discloses an oil pressure time-frequency domain combined control method of a clutch hydraulic system, and the oil pressure control under different working conditions is realized by using the time-frequency domain combined control method according to the oil pressure demand of the clutch hydraulic system and the characteristics of global fast sliding film time domain control and loop shaping frequency domain control. The application has the advantages of fast response time, high steady-state accuracy and small overshoot.

A method for video processing is provided, comprising: determining that a conversion between a current video block of a video and a coded representation of the video enables a coding mode; and performing the conversion using an intra block copy mode, wherein the intra block copy mode uses at least a block vector pointing to a block of a picture comprising the current video block to generate a prediction block, and wherein, in the coding mode, the current video block is constructed based on samples in a first domain and a second domain, and / or chroma residuals are scaled in a manner dependent on luma.

A resonator is disposed on a circuit board and includes a first coupling line, a second coupling line, at least one first resonant line, and at least one ground plane. The at least one first resonant line forms a loop shape. The first coupling line, the second coupling line, and the at least one first resonant line are located on a conductive layer of the circuit board. The first coupling line and the second coupling line are parallel to a first coupling portion and a second coupling portion of the at least one first resonant line, respectively. The first coupling line and the second coupling line couple the at least one first resonant line and are disposed inside the at least one first resonant line. The at least one ground plane is located on another conductive layer of the circuit board. Thus, the layout configuration flexibility of the circuit board is improved. The present disclosure also relates to a circuit element.

The invention relates to a data transmission method, system and device for electromagnetic transient real-time simulation, and the method comprises the steps: introducing affine time base parameters and sub-time slot gating, precisely controlling a transmission moment from a source, carrying out the closed-loop shaping of a time error of received data through employing a sliding window delay locking ring, and carrying out the precise control of the transmission moment. The data release time is strictly locked at the preset moment, the influence of transmission jitter on data is thoroughly eliminated, the stability and self-adaption of data transmission are improved, data recovery processing is carried out on received data which does not meet the certainty requirement, the data blank can be intelligently filled, the accuracy of data transmission is improved, and the data transmission efficiency is improved. The data transmission quality is also ensured; the online self-calibration function is achieved through the jitter fingerprints, so that data transmission cannot be attenuated along with environment changes, the long-term optimal deterministic state is kept, and the technical problems that in the real-time simulation data packet transmission technology of an existing power system, data transmission is uncertain, quality is poor and self-adaption is poor are solved.

The present application relates to a strong static unstable launch vehicle adaptive and robust stability control method, gap measurement is performed on the rated and deviation models and the nominal model at different times of the whole flight segment, the segmentation of the rated and deviation models in the time dimension is completed, and the robust controller in each segment is designed; the nominal model is tuned by using loop shaping method to obtain the model G s ; the model G s is obtained by order reduction of G sb , the uncertainty envelope between G sb and the rated and deviation model set is measured to obtain the controlled object G p containing multiplicative uncertainty; the control weight function W u and the error weight function W e are designed; G p , W u and W e are formed into a generalized robust control design object P, which is substituted into the robust control design architecture, and the robust controller is obtained by using the mu synthesis iterative method and order reduction; the adaptive adjustment law of the loop gain is designed and multiplied by the robust controller to stabilize the flight attitude of the launch vehicle in the current segment. The problem of attitude stability control of a strong static unstable launch vehicle is solved.