摘要
为评价手控操纵作业人体负荷，选取肌电平均积分电位作为评价指标。实验以计算机产生的地貌作显示器，以操纵杆作控制器，进行模拟飞船姿态维持手动控制，用计算机对肌电信号和操作误差进行采集、处理。研究了肌电平均积分电位（ＭｅａｎＥＭＧ）与作业难度之间的关系。结果表明，ＭｅａｎＥＭＧ随难度的增加而增加，二者成很好的线性关系，还对训练情况对肌电的影响作了分析。ＭｅａｎＥＭＧ可作为评价操纵作业下人体负荷的有效指标。
To evaluate human workload during manual operation,9 subjects participated in the attitude maintaining experiment with simulated earth scenery as the display and a stick as the controller.Mean-rectified EMG was chosen as the index.Surface EMG was recorded in a couple of agonist and antagonist. Kinematics equation was simulated on a analog computer,and three difficulty of work were controlled by changing the amplifier's coefficients.486 Computer was used to record the quantity of subject's operation and the data of Mean EMG from amplifier. Relevant software was compiled. The results showed that there was a linear relationship between mean-rectified EMG and difficulty of work.The effects of training on workload were also discussed.Mean EMG can be used as an index for evaluating human workload.
出处
《航天医学与医学工程》
CAS
CSCD
1997年第6期425-429,共5页
Space Medicine & Medical Engineering
关键词
工作负荷
手控
肌电位
工效学
workload mannual control myoelectric potential assessment
