To comprehensively evaluate the current and future aging states of lithium-ion batteries, namely their State Health (SOH) Remaining Useful Life (RUL), this paper proposes a joint prediction method based on Gaussian Process Regression (GPR) Long Short-Term Memory (LSTM) networks. First, health features (HFs) are extracted from partial charging data. Subsequently, these fed into GPR model for SOH estimation, generating predictions. Finally, estimated values initial cycle to start point (SP)...

The problem of the path planning method is regarded as one key bottlenecks in robotic belt grinding system. It has a significant impact on surface quality processed workpieces with complex surfaces. To improve quality, novel proposed this article, which generates containing both position and orientation for an industrial robot. First, theoretical trajectory obtained by selecting contact points 3-D model calculating inverse solutions B-spline curves. Next, based curvature variation rate curve...

Open AccessCCS ChemistryRESEARCH ARTICLES30 Jun 2024Molecular Skeletons Modification Induces Distinctive Aggregation Behaviors and Boosts the Efficiency Over 19% in Organic Solar Cells Hanjian Lai, Xue Yongwen Lang, Yongmin Luo, Liang Han, Yulin Zhu, Shilong Xiong, Xiangyu Shen, Yafei Ding, jiaying Wu, Gang Li Feng He Lai , Lang Luo Han Zhu Xiong Shen Ding Wu https://doi.org/10.31635/ccschem.024.202404482 SectionsSupplemental MaterialAboutPDF ToolsAdd to favoritesDownload CitationsTrack...

To accurately estimate the State of Health (SOH) lithium-ion batteries, this study proposes a novel approach combining Convolutional Neural Network (CNN) and Gated Recurrent Unit (GRU) with an error correction mechanism. By extracting health features from partial charging data, method reduces dependence on complete charge-discharge cycles, addressing challenges like long data acquisition times high costs. The CNN captures local battery degradation, while GRU models aging dynamics to provide...

Abstract Aiming at the reconstruction problem of Hall drift current during operation thrusters, this study focuses on compensating accuracy reduced by magnetic signal loss. It investigated influence sensor loss reconstruction, and elaborates applying Kriging interpolation to improve accuracy, so as enhance anti-interference ability magnetostatic inversion method in practical applications. This utilizes make up missing signals then uses interpolated field reconstruct current. The obtained...

In this paper, we summarize the research development of low-frequency oscillations in last few decades. The findings physical mechanism, characteristics and stabilizing methods are discussed. It shows that it is unreasonable incomplete to model an ionization region separately analyze mechanism oscillations. Electro-dynamics as well formation conditions distribution play important role Understanding low- frequency thoroughly developing a feasible method instability still subjects.

The design of the flow field structure in Proton Exchange Membrane Fuel Cells (PEMFCs) plays a pivotal role determining their electrochemical performance.

We present an accurate synthesis method for the design of a four-line interdigitated coupler in this paper. With derivation admittance matrix four coupled transmission lines and use interconnecting condition, only half original coupled-line structure should be considered with its symmetric plane replaced by perfect electric wall and/or magnetic wall. Subsequently, two new mode admittances are, respectively, calculated from propagation constants line impedances <i...

A mode transition phenomenon was found in Hall thrusters, which induced by the increase of magnetic field gradient. In process, we observed experimentally that there have been obvious changes oscillation, mean value discharge current, thrust, anode efficiency, and plume pattern. The shifting compression high causes electron density channel to decrease ionization zone move towards exit plane. This also corresponds a low atom channel, resulting loss stability at gradient, presents mode.

A newly designed azimuthal diversion rail (ADR) is studied and used to enhance the ionization process in an ATON-type Hall thruster. The efficiently reduces neutral flow axial velocity, hence, increases resistance time of atoms discharge channel Thrust performances, terms thrust, anode efficiency ion beam divergence, are found be improved because application rail, especially at low mass rate conditions. Experiment results reveal that ADR utilization under insufficient operating design...

A novel bandwidth enhancement method based on capacitive degeneration and active inductive peaking techniques is proposed. Based this method, a CMOS Regulated Cascode (RGC) transimpedance amplifier (TIA), which implemented with silicon 0.18μm 1.8V technology, presented. Simulation results show that the gain of TIA 61.23dB, 5.12GHz, average noise current spectral density 11.4 pA /√(Hz), output eye-diagram clean, power consumption only 18.4mW.

The use of a filter is the most common method to suppress low-frequency discharge current oscillation in Hall thrusters. only form actual involves RLC networks, which serve purpose reducing level conducted electromagnetic interference returning power processing unit, function filter. Recently, role control was introduced. It has been noted that regulates voltage across itself according variation so as decrease its fluctuation circuit, controller. Therefore, kind two-stage proposed fulfill...

This paper describes a vision-based flexible vibratory feeding system (VBFVFS) for agile manufacturing, which mainly consists of decupled feeder, machine vision system, displacement sensors, power amplifiers and computer system. Its major parameters such as the vibration angle, frequency, acceleration amplitude, phase difference all can be easily adjusted online by software means. Consequently, not only feed wide range parts without any retooling but also various made different material in...

Three copper(II) and cobalt(III) complexes, [CuL(dca)]n (1), [CuL(N3)]n (2) [CoL(N3)2(DMF)] (3), where L is the monoanionic form of Schiff base (((2-(pyrrolidin-1-yl)ethyl)imino)methyl)naphthalen-2-ol (HL), dca dicyanamide, have been prepared characterized by elemental analyses, IR UV-Vis spectroscopy, as well single crystal X-ray diffraction. The Cu atoms in complexes 1 2 are square pyramidal coordination, Co atom complex 3 octahedral one. Complexes inhibit Jack bean urease with IC50 values...

It is found that the low frequency oscillations have modulating action on high instabilities in Hall thrusters. The physical mechanism of this modulation discussed and verified by numerical simulations. Theoretical analyses indicate wide-range fluctuations plasma density electric field associated with affect electron drift velocity anomalous transport across magnetic field. amplitude are modulated oscillations, which show periodic variation time scale oscillations.

This paper provides a method to measure the amplitude of low frequency oscillation under on-track working condition, and realizes sampling by means adding circuit design sampling, pass filtering 3 dB at 48.2 kHz, detection integrating in unit. The experimental results prove that measuring device merely 0.8 g can quantitatively reflect Hall thruster maximum deviation experiment data theory is 10% FS.

Vibratory feeder, thanks to its excellent material storage, workpiece orientation and continuous feeding characteristics, is widely used in industrial automation.Since versatility not strong, orienting mechanism needs be designed for different workpieces, which often cannot meet today's rapidly changing market.In light of this, this paper introduces a flexible vibratory system based on machine vision.On the basis traditional can achieved with vision appropriate executive mechanism.In paper,...