Abstract This paper briefly describes the vital role and development history of maintenance human factors in continuous airworthiness process civil aircraft. It innovatively proposes four key elements (maintenance accessibility, safety, error prevention, simplicity) their design methodologies. Analyzing causes related aviation accidents using this method validates its feasibility suggests measures to prevent similar accidents, thereby enhancing level aircraft factors.

Abstract The effectiveness and accuracy of traffic parameter measurement is a key means to improve the intelligence level intelligent transportation system. In this paper, spatio-temporal data flow on GY expressway in city selected as research analyze correlation data. And way, GCN-BiLSTM model constructed, using advantages GCN algorithm BiLSTM capture potential information time series prediction accuracy, which used predict parameters highway each lane section. coefficient values...

A typical man–machine coupling system could provide the wearer a coordinated and assisted movement by lower limb exoskeleton. The process of cooperative relies on accurate perception wearer’s human information planning control joint In this paper, neural network Long-Short Term Memory (LSTM) machine learning model method is proposed to predict actual trajectory body’s limbs. Then wearable angle measurement device was designed for gait prediction, which can be used predictive through methods....

To address the uncontrollable risks associated with overreliance on ship operators’ driving in current safety braking methods, this study aims to reduce impact of operator fatigue navigation safety. Firstly, established a human–ship–environment monitoring system functional and technical architecture, emphasizing investigation model that integrates brain using electroencephalography (EEG) during navigation. Subsequently, Stroop task experiment was employed induce responses drivers. By...

Abstract Lower limb exoskeletons (LLEs) are sets of mechanical devices used to support the action human lower limbs. This recently developed technology has unprecedented potential in construction industry by increasing strength, endurance, and other physical capabilities workers. For safety considerations, LLEs need reliable responsive controllers closely match their operation with gait a synchronous manner. research proposes use human–robot interactive (pHRI) that suitable for tasks. The...

Accurately perceiving and predicting the parameters related to human walking is very important for man–machine coupled cooperative control systems such as exoskeletons power prostheses. Plantar pressure data rich in gait posture information an essential source of reference input exoskeleton system. Therefore, proper design sensing insole validation a big challenge considering requirements convenience, reliability, no interference so on. In this research, we developed low-cost modular unit...

Human-robot cooperation is the major challenges in robot manipulator control, as controller has to couple complicated motion of human arm and end-effectors. To improve human-robot coordination, this paper proposed a novel robust finite-time trajectory control based on nonsingular fast terminal sliding mode high-order mode. The method able quickly reach global convergence minimize errors. Based surface, employed super-twisting algorithm eliminate chattering issues enhance robustness. Also,...

Abstract Unpredictable disturbances and chattering are the major challenges of robot manipulator control. In recent years, trajectory-tracking-based controllers have been recognized by many researchers as most promising method to understand dynamics with uncertainties improve However, reliable require high model precision complexity. To develop an agile straightforward mitigate impact caused uncertain disturbance chattering, this study proposed adaptive neural network sliding mode controller...

The lower limb exoskeleton is a wearable human–robot interactive equipment, which tied to human legs and moves synchronously with the gait. Gait tracking accuracy greatly affects performance safety of exoskeletons. As coupling systems are usually nonlinear generate unpredictive errors, conventional iterative controller regarded as not suitable for safe implementation. Therefore, this study proposed an adaptive control mechanism based on learning model track single leg gait control. To assess...

Revealing the 'Invisible Gorilla' in Construction: Assessing Mental Workload through Time-Frequency Analysis Jiayu Chen, Bin Ren, Xinyi Song, Xiaowei Luo Pages 1-8 (2015 Proceedings of 32nd ISARC, Oulu, Finland, ISBN 978-951-758-597-2, ISSN 2413-5844) Abstract: Construction companies suffer huge losses due to labor fatalities and injuries. Since more than 70% all accidents are related human activities, detecting mitigating human-related risks holds key improve safety condition construction...

The isobaric heat capacity of dimethyl ether and 1,1-difluoroethane in liquid phase were measured at temperatures from 305 K to 365 pressures up 5 MPa. A conduction calorimeter was applied the measurements a total 81 data points for 78 obtained. uncertainties estimated be 2.1% 1.8% 1,1-difluoroethane, respectively. To reproduce experimental data, uniform equation proposed. showed average absolute deviations 0.17 % 0.30 values. Saturated capacities both subjects also obtained by extrapolating...

A novel indirect-expansion solar-assisted multifunctional heat pump with four exchangers was proposed in this paper, which integrates a air conditioner, solar water heater and heater. In addition to these three basic operation modes, it also provided five energy-saving resulted higher utilization ratio of the energy lower operational cost. Experiments space heating mode, source mode have been investigated detail at different outdoor temperatures temperatures. The is especially suitable for...

A battery energy storage system based on modular multilevel converter is proposed in this paper, which has many advantages, including easy expansibility, simple structure and high reliability. The capable of compensating active reactive power simultaneously, applied for capacity situation. mathematical model built its circulating current suppressing control method introduced paper. analyzed situation different output, proposed. simulation the PSCAD/EMTDC, feasibility validated by results.

Battery energy storage system(BESS) connected to the grid by power conversion system(PCS). Currently Cascaded Multilevel Converter(CMC) and Modular Converter (MMC) are two more advanced topologies for PCS. This paper compares CMC MMC in aspects of efficiency, harmonic characteristics, reliability, control system complexity cost, simulation results presented. Suggestions topology suitable large output proposed, which can be used as a reference design large-capacity

(1) Background: After motion sickness occurs in the ride process, this can easily cause passengers to have a poor mental state, cold sweats, nausea, and even vomiting symptoms. This study proposes establish an association model between level (MSL) cerebral blood oxygen signals during ride. (2) Methods: A riding simulation platform functional near-infrared spectroscopy (fNIRS) technology are utilized monitor of subjects experiment. The subjects' scores on Fast Motion Scale (FMS) determined...

A battery energy storage system based on MMC (MMC-BESS) is discussed, the has active and reactive comprehensive compensation capability. The MMC-BESS applied in wind farm integration, which can smooth power fluctuations improve voltage of bus effectively. Bidirectional DC/DC link used to parallel batteries with DC side submodule, state charge (SOC) balance control strategy are proposed. capacity expanded application a coordinated transient proposed when unusual. feasibility topology...

Abstract Development of a coalbed methane (CBM) field in its early stage is often plagued by the lack well control and scarcity geological data over large geographical area. Therefore, constructing representative static model to estimate in-place-volume presents formidable challenge. In this paper we proposed workflow overcome challenge applied it CBM northern Bowen Basin Australia. This may be considered as best practice for following reasons. First, makes use from various sources including...

In large spaces, co-operative HVAC terminals are usually installed to provide services for different virtual thermal zones. The lack of high-resolution occupancy distribution in spaces is often perceived as one the main causes underperformed HAVC systems. Current studies considered information whole space or room, such count level, other than zone-level distribution. Although total occupants might stay constant, actual be different, which will bring with operations each terminal. Therefore,...

The lower limb exoskeleton robot is capable of providing assisted walking and enhancing exercise ability humans. coupling human–machine model has attracted a lot research efforts to solve the complex dynamics nonlinearity within system. This study focuses on an approach gait trajectory optimization coupled with human through genetic algorithm. system studied in this article multibody virtual simulation environment. Planning motion carried out by algorithm, which iteratively generated under...

Abstract Stability control is critical to the exoskeleton robot controller design. Considering complex structural characteristics of lower limb robots, major challenge design accuracy and uncertainty dynamics model. To fill in this research gap, study proposes successive approximation-based radial basis function (RBF) neural networks (NNs). The proposed model simplifies as three degrees-of-freedom (3-DOF) with human hip joints for adduction/extension, bending/extension, internal/external...