End-to-end scene text spotting has attracted great attention in recent years due to the success of excavating intrinsic synergy detection and recognition. However, state-of-the-art methods usually incorporate recognition simply by sharing backbone, which does not directly take advantage feature interaction between two tasks. In this paper, we propose a new end-to-end framework termed SwinTextSpotter. Using transformer encoder with dynamic head as detector, unify tasks novel Recognition...

Battery Open Circuit Voltage (OCV) is of fundamental characteristic for enabling battery modeling and states estimation. However, the traditional OCV measurement method takes a very long time to make reaches its equilibrium, which rather inconvenient cannot be performed online energy storage application. Motived by this, this paper proposes an effective fast estimation in relaxation process. In work, novel model designed capturing voltage response during Genetic Algorithm (GA) further...

Reconstructing a three-dimensional (3D) structure from single two-dimensional training image (TI) is challenging issue. Multiple-point statistics (MPS) an effective method to solve this problem. However, in the traditional MPS method, errors occur while statistical features of reconstruction, such as porosity, connectivity, and structural properties, deviate those TI. Due reconstruction mechanism that voxel being reconstructed dependent on voxel, it may cause error accumulation during...

A cascade multilevel voltage-source inverter with separate dc sources is proposed for static synchronous compensation (STATCOM). It can solve the size-and-weight problems of conventional transformer-based multipulse inverters and component-counts diode-clamp flying-capacitor inverter. Phase-shift sinusoidal pulse width modulation (PS-SPWM) technique employed to control switching devices each inverter, as a result, operate at higher equivalent carrier frequency. In conclusion, has such...

This letter mainly considers the cooperative localization problem of 3D mobile cluster network. With development Doppler frequency shift measurement technique, high-precision relative velocity has become possible. In this letter, we first incorporate information into framework. Then quasi-Newton algorithm BFGS is used to solve framework, and vBFGS suitable for solving position network constructed. Simulation experiments show that using assist positioning can significantly improve accuracy....

In this paper, a novel hybrid diode-clamp cascade multilevel converter (HDCMC) is presented. The new concept of the based on connection multiple modules with different dc bus voltages. With topology consisting higher voltage and lower modules, realization converters using approach involving devices faster operating in synergism possible. A detailed example given, general discussion N-cell HDCMC Experiment validation also carried out. From experiment results, can generate better output...

User-side battery energy storage systems (UESSs) are a rapidly developing form of system; however, very little attention is being paid to their application in the power quality enhancement premium parks, and coordination with existing voltage sag mitigation devices. The potential UESSs has not been fully exploited. Given above, this paper proposes hierarchical supply strategy for parks (PPPs) based on dynamic restorers (DVR). Firstly, topology control UESS devised. Further, we construct...

Recognition and analytics at the edge enable utility companies to predict prevent problems in real time. Clearing voltage sag disturbance source by positioning method is most effective way solve improve sag. However, for different grid structures fault types, existing methods usually achieve a location based on single feature of monitoring data extraction. due effectiveness applicability features, this paper proposes multidimensional matrix. Based analysis characteristics event caused fault,...

Static synchronous compensation (STATCOM) is a flexible ac transmission system (FACTS) device, which can be used to generate reactive power in long distance transmission. The conventional STATCOM consists of several voltage-source inverters connected together through zigzag arrangement transformers, arouse some problems, such as expensive, producing much loss, difficult control and unreliable. This paper proposes another STATCOM, named cascade multilevel inverter with phase-shift sinusoidal...

In this paper, a novel asymmetric 5-level inverter is studied which composed of half-bridge diode-clamp and conventional connected to common split-capacitor power supply. Analysis modulation technique for the inverter, incorporates square-wave synthesis in conjunction with PWM subharmonic method, illustrated. According proposed control technique, new configuration permits faster devices higher voltage operating together. order estimate spectra accurately, mathematic models process three...

This paper proposed a novel hybrid asymmetric 9-level inverter in which an 5-level and H-bridge with equal DC bus voltage are series connected. A modulation technique for the is illustrated. In terms of control adopted, new configuration permits faster devices higher operating synergism. case three carrier dispositions, mathematic models process built. The rigorous analytic solution derived from extension Bennet's method, benefits evaluation spectra accurately. We summarize spectral...

Herein, a new type of bolted-assembled reinforced-concrete column-steel (RCS) beam composite joint is proposed by analysing the force and transmission process RCS joints. The practicality uniqueness structure apply to beam–column joints in large shopping malls, mid- high-rise office buildings, factories, garages other building structures. By finite-element software modelling, numerical simulation established used analyse variation stress equivalent plastic deformation, hysteresis curve,...

Abstract To study the disturbance characteristics of double-line shield tunnel excavation on sand bodies in grouting-reinforced water-rich stratum, a similar model test was carried out. Firstly, physical parameters and strength indexes overlying soil strata stratum were determined by laboratory tests. The support structures each prepared. Then, considering different seepage modes upper lower under influence range excavation, is conducted. variation rules deformation, surface settlement, body...

Short term electricity load forecasting can timely assess the overall power changes in a certain area, which is crucial for safe and stable operation of modern systems. This paper proposes short-term model that combines Stationary Wavelet Transform (SWT), Residual Network (ResNet), Long Short-Term Memory (LSTM). Firstly, historical weather factors are selected as original data, where data decomposed into multi-level wavelet components by SWT, added to input feature sequence. Then,...

The curve of flow-head is one the most important indicators to assess water pump performance. While it difficult get measured data in real condition and very limited. method mining based on support vector machine (SVM) built due its superiority dealing with small sample event. aimed at finding out unknown between drawing more accurate curve. It was found that model SVM much better than neural network when their curves are compared.

The paper provided an overview of computer aided tolerance design and described the research methods design. An example a displacement pump was employed to analyze angle linear tolerance. With application optimization CAD assemblies combined with annotation accumulation validation, product can be optimized cost reduced effectively.

Stripline is a key component for MIC. Therefore, exact calculation of the characteristic impedance important analysis and synthesis stripline circuit. There are many methods with zero or finite strip thickness. Exact solution thickness was already given by conformal transformation method, but that not. So far, relatively fringing capacitance method. Here, new systematic mode method proposed, which based on lateral equivalent network can give more any including This demonstrated to be valid...

The equalization system is a key technology in the large-capacity energy storage management system. existing active and passive can only control capacity voltage deviation inside module (cluster). Although balance of SOC cluster realized by transfer or consumption batteries, topology complex number batteries large. For entire system, overall must be considered especially when power output demand close to exceeds rated short board will limit capabilities Aiming at this paper allocates command...

Voltage sag brings economic losses that are difficult to measure for industrial users. The use of monitoring information and related indices forecasting is the key solving this problem. In order realize rapid reasonable prediction results in early stage event, paper proposes a voltage model based on distribution diffusion theory. Firstly, method principle theory explained. Based existing research, severity discussed. Then, considering close causal relationship between them, article...

In order to analyze the distribution characteristics of voltage and current on Half-Wavelength Transmission Lines (HWTLs), obtain comprehensive impact various system operating parameters transmission characteristics, based frequency-length factor (FLF), model lossy lines is derived. Based pole feature FLF, power frequency resonance mechanism after short-circuit revealed. Cases are studied PSCAD verify calculation results, which proves correctness theoretical analysis conclusion accuracy model.