Smart Grid is an inevitable trend of power grid, and smart grid comprehensive assessment system can conduct a the overall characteristics which reflect current level development, find weakness constraints in network identify distance to target, ensure development achieve unification quality, speed efficiency. At present, many countries are studying on systems. This paper analyzes IBM Maturity Model, DOE Development Evaluation System, EPRI Construction Assessment Indicators, EU Benefits...

We present a novel application of the variable stiffness actuator (VSA)-based assistance/rehabilitation robot-featured impedance control using cascaded position torque loop. The robot follows adaptive paradigm, thereby achieving an assistance level according to human joint torque. feedforward command is used cooperatively adjust controller and trajectory VSA (this functional architecture referred as cooperative framework). In this way, task performance during movement training can be...

This paper examines the evolution of development pathways and technological research within context business maturity model for new energy platforms. Leveraging theories from industry life cycle project management models, this study constructs a specific to platforms employs fuzzy comprehensive evaluation methods assess maturity. Through an analysis four primary indicators—strategic capability, innovation economic benefit, social benefit—and their respective secondary indicators, evaluates...

With the arrival of era new quality productivity, rapid development technology is profoundly changing various aspects society, and education sector no exception. As key subject educational activities, teachers' functions urgently need to be reshaped expanded meet demands talent cultivation in productivity.

Concentric magnetic gears hold a promising future in the field of low speed and high torque. To obtain sinusoidal distribution air gap field, this paper, exact 2-D analytical method is proposed to calculate concentric gear with Halbach permanent-magnet arrays, analyzes relationship between parameters maximum static torque, include width modulating ring core, height thickness outer rotor yoke. Compared air-gap distributions computed by those obtained from finite-element (FEM), FEM results are...

Active lower limb exoskeletons are increasingly used in rehabilitation therapy. An important aspect and ongoing research topic developing such assistive devices is safe human–machine interaction. Another major challenge the control of determining subject's intention to move for providing cooperative assistance. To address both challenges, we first present design a new exoskeleton with variable stiffness actuators compliant coupling between human robot. The exoskeleton's actuated hip, knee...

Two Gram-staining-negative, aerobic, non-spore-forming rod-shaped, non-motile bacteria, designated strains R156-2 T and T58-2 were isolated from the roots of Cymbidium goeringii. The colonies yellow-pigmented. On basis 16S rRNA gene sequence similarity, shown to be members genus Chitinophaga . Strains showed greatest level similarity with niabensis (96.0–96.3 %). major menaquinone was MK-7. main cellular fatty acids iso-C 15 : 0 , C 16 1 ω5 c 17 3-OH. Phenotypic genotypic analyses indicated...

A variable stiffness actuator (VSA) is an inherently parameter-dependent system due to the controllable element. Within torque-controlled framework, VSA distinguished from classical series elastic (SEA). frozen torque controller can directly determine SEA performance with a fixed-stiffness spring selection. However, since operates at set of operating points, aim achieve adaptive control approach. For this, we propose gain-scheduled controller. The expected recover robustness when values are...

We present a framework for achieving robust stability test of the variable stiffness actuator (VSA) exoskeleton programmed with gain scheduling-based impedance control (GSVIC). In this brief, focused involves cascaded position torque loop, in which both loops are closed, and index GSVIC is related to joint human. However, there lack research on variation rate such biofeedback signal. This information necessary when performing linear parameter-varying (LPV) system. To acquire bounded rate,...

This article investigates a closed-loop torque-controlled variable stiffness actuator (VSA) combined with disturbance observer for enhancing low output impedance. We implement the generalized extended state (GESO) conveniently testing stability of time-varying VSA system. In our application, GESO is also required to serve operation low- and high-impedance task. Here, most important aspect consider influence physical on impedance, because has been regulated torque control. Through...

The cascade impedance control (CIC) is a wellknown architecture framework for rehabilitation exoskeleton with compliant joint (e.g., series elastic actuator). cascaded position-torque-velocity loop of the CIC system can deal specific issues, such as stiction or accuracy output impedance. In this paper, loops are extended by traditional iterative learning (ILC), and then we examine compare three types frameworks, named torque learning, trajectory learning. Their advantages, reducing lag...

Abstract This paper addresses the trajectory tracking problem for a class of uncertain manipulator systems under effect external disturbances. The main challenges lie in input constraints and lack measurements joint velocities. An extend‐state‐observer is utilized to estimate velocity signals; then, neural‐network‐based adaptive controller proposed solve problem, where term based on nominal model included enhance ability, uncertainties disturbances are compensated by neural‐network term....

Four alkaligenous, moderately halotolerant strains, designated ge09, ge10(T), ge14(T) and ge15, were isolated from the internal tissue of ginseng root their taxonomic positions investigated by using a polyphasic approach. Cells four strains Gram-positive-staining, non-motile, short rods. Phylogenetic analysis based on 16S rRNA gene sequences showed that ge09 ge10(T) formed one cluster ge15 another separate within genus Bacillus. sequence similarities with type other Bacillus species less...

This paper reviews the status of research in modeling and simulation single-event effects (SEE) digital devices integrated circuits. After introducing a brief historical overview SEE simulation, different level approaches are detailed, including material-level physical where two primary methods by which ionizing radiation releases charge semiconductor device (direct ionization indirect ionization) introduced, device-level main emerging phenomena affecting nanometer (bipolar transistor...

Few studies conduct a quantitative assessment between the urban extent and local precipitation characteristics. In this paper, high‐resolution data are used to investigate correlation frequency, intensity extremes under different climate conditions over Pearl River Delta, China. Analysis reveals that extreme amount ( R = 0.45 for 1‐hr maximum) mean 0.56) positively correlated with wet hours −0.58) negatively extent. The coefficients indices increase decrease in temporal scale of indices....

Development of movement assistance devices used in rehabilitation must take into account the variable human-machine interaction. To this end, electromyography (EMG) sensors detecting muscle activation are regarded as a feasible method. In paper, we focus on torque estimation human knee joint. The joint motion analysis was captured through developed EMG sensor, and subsequently by using an EMG-driven model. For calibrating model, experimental computed employing inverse dynamics that have been...

In allusion to the traditional UFLS scheme's deficiencies of changeless frequency setting value and amount load shedding every run, this paper proposes improved scheme which can alter first run dynamically according magnitude change rate, namely insufficient active power. The simulation results stand-alone model show that reformative restrain falling depth effectively, fit speed controller preferably, make full use system rotating spare capacity, reduce possibility over-cut or owes-cut.

With the development of energy internet and integrated system (IES), there will be more couplings between different systems, i.e. power system, gas heat system. Moreover, interactions among parts source, grid, load, storage converters. Based on this background, paper puts forward a novel power-gas-heat planning model considering sources, demand response, storages By means model, various is met with minimum cost, realizing most effective allocation funds optimal use energy.