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1401results about How to "Reduce offset" patented technology

Wind farm energy storage capacity optimization method in consideration of optimal desired output and charge state

The invention discloses a wind farm energy storage capacity optimization method in consideration of optimal desired output and charge state. The method comprises the steps as follows: firstly, a computing method of an optimal desired output is proposed and utilizes a function with minimum square deviation of offset of a grid-connected power target value as an objective function, setting subjectivity of a stabilizing fluctuation output power target value is eliminated, and the computing method serves as the premise of energy storage capacity optimization; secondly, an energy storage SOC (state of charge) parameter is introduced, charge-discharge power is timely adjusted on the basis of the fuzzy control theory, SOC and charge-discharge states, an energy storage charge-discharge strategy is built, and excessive charge and discharge are effectively restrained; and finally, an optimal model is built with minimum sum of the penalty cost associated with the SOC and the operation cost, so that the energy storage capacity optimization integrating a schedule decision-making requirements, energy storage operating service life and economic efficiency is achieved, and related optimizing problems are solved with improved PSO (particle swarm optimization). The solution algorithm provided by the method is fast, efficient, and strong in convergence capacity.
Owner:SHANDONG UNIV

Zero-counterweight barycenter deploying method for parallel tiling tank satellite

ActiveCN104401506AAchieve regulationReduce the amount of change in the center of massSpacecraft guiding apparatusSatelliteBarycentric coordinates
The invention provides a zero-counterweight barycenter deploying method for a parallel tiling tank satellite. The method comprises the following steps: (1) preliminarily calculating a satellite barycenter position; (2) preliminarily calculating an adjustable scope of a barycenter; (3) after testing mass characteristics of the satellite, acquiring a measured value of the barycenter, analyzing and calculating the mass and position of a to-be-adjusted propellant according to the measured value, and causing the barycenter to approach to the original point; (4) performing propellant filling for the satellite according to a calculating result of the filling quantity of the propellant of each tank, controlling different filling quantities, and meanwhile, setting a work state after filling. The invention provides the new barycenter deploying method for a parallel tiling tank layout high-orbital satellite; under the condition of not increasing the total mass of the satellite, the original barycenter offset of the satellite is reduced, so that the barycenter variation of a satellite orbital transfer section is reduced, the disturbance torque is reduced, the safety of the satellite orbital transfer is ensured, the consumption of the propellant is reduced, and the service life of the satellite is prolonged.
Owner:SHANGHAI SATELLITE ENG INST

Display panel, driving method and display device

The embodiment of the invention discloses a display panel, a driving method and a display device. The display panel comprises a substrate base plate, wherein the sub-pixels are located on one side of the substrate base plate; a switch module; wherein the first end is electrically connected with the first end of the driving module, and the second end is connected with the bias compensation voltage end; the picture updating period comprises a data writing stage and a maintaining stage; the maintaining stage comprises a first stage and a second stage; the driving module is used for generating a driving current according to the data voltage transmitted by the data writing module in a data writing stage; the driving circuit is also used for providing driving current for the light-emitting element in a second stage; the switch module is used for providing bias compensation voltage for the first end of the driving module in a first stage. The problem of insufficient brightness of an existing display panel due to the hysteresis effect of the driving transistor is solved, the offset of the bias voltage of the driving transistor can be reduced in advance, the electrical performance of the driving transistor is improved, the accuracy of the light-emitting brightness in the light-emitting stage is guaranteed, and the display effect of the display panel is improved.
Owner:WUHAN TIANMA MICRO ELECTRONICS CO LTD

Display device, display panel thereof, and transparent display panel

The invention provides a display device, a display panel thereof, and a transparent display panel. A first sub-pixel of the transparent display panel is arranged to comprise a light-transmitting area and a non-light-transmitting area, wherein the non-light-transmitting area is provided with a first light reflecting anode, a first light-emitting structure layer and a first cathode in a stacked mode, and the light-transmitting area completely wraps the non-light-transmitting area, or the non-light-transmitting area completely wraps the light-transmitting area. The light emitted by the first light-emitting structure layer can be reflected back and forth between the first light-reflecting anode and the first cathode for multiple times to form a microcavity effect, so that the light-emitting efficiency is enhanced, the frequency spectrum is narrowed, and the display quality of the transparent display panel is improved; when the full screen displays, the color coordinates of the light-transmitting display area and the non-light-transmitting display area are basically consistent, and deviation is avoided. The non-light-transmitting area is completely wrapped by the light-transmitting area, or the non-light-transmitting area is completely wrapped by the light-transmitting area, so that light emitted by one first sub-pixel can be uniformly diffused to all pixels around, the color coordinate offset is reduced, and the color rendering consistency under different visual angles is improved.
Owner:KUNSHAN GO VISIONOX OPTO ELECTRONICS CO LTD
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