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Research on cognitive load evaluation with subjective method in manual assembly

High Technology Letters 2023年第4期29卷 434-444页

作者：任彬 ZHOU Qinyu LI Qibing LUO Wenfa Shanghai Key Laboratory of Intelligent Manufacturing and Robotics School of Mechatronic Engineering and AutomationShanghai UniversityShanghai 200444P.R.China Zhejiang Key Laboratory of Robotics and Intelligent Manufacturing Equipment Technology Ningbo Institute of Materials Technology&EngineeringChinese Academy of SciencesNingbo 315201P.R.China SAIC Motor R&D Innovation Headquarters SAIC Motor Corporation LimitedShanghai 201804P.R.China

Subjective scales have different kinds of applicability in diverse *** study intends to implement a quantitative approach to determine the applicability of subjective scales in manual as-sembly work and evaluate the cognitive load of assembly workers.A multi-scale research paradigm based on subjective evaluation method is *** typical task stages are extracted from the process of assembly *** National Aeronautics and Space Administration Task Load Index(NASA-TLX)scale,PAAS scale and Workload Profile Index Ratings(WP)scale are selected for the design of 3×3 multi-factor mixed *** power spectrum density(PSD)characteris-tics of electroencephalogram(EEG)are utilized to identify the difficulty levels of the three task *** relevant indicators of scale applicability are *** results show that in terms of sensitivity,NASA-TLX scale reaches the highest sensitivity(F=999.137,P=0scale possesses the best concurrent validity(P=0.0255scale based on 6 dimensions takes on the best diagnostic *** terms of subject acceptability,WP scale performs the *** to the analytic hierarchy process(AHP)model,the applicability scores of NASA-TLX scale,PAAS scale and WP scale are determined as 3,2.55 and 1.6714,***,NASA-TLX scale is regarded as the most suitable subjective evaluation questionnaire for assembly workers,which is also an effective quantitative evaluation method for the cognitive load of assembly workers.

关键词： assembly worker electroencephalogram(EEG) analytic hierarchy process(AHP) National Aeronautics and Space Administration Task Load Index(NASA-TLX)scale subjective evaluation scale applicability

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