Research On Mental Workload Evaluation Based On ACT-R Cognitive Model

This study focuses on spatial fine-grained tracking control tasks—human control rendezvous and docking.Through theoretical analysis and experimental research methods,the ACT-R cognitive system is used to explore the distribution of mental workload among workers in human-controlled rendezvous and docking tasks in the brain area.The purpose is to improve the mental workload of the human-controlled interface design,evaluation,monitoring of the human-machine interface and predict errors in rendezvous and docking operations and provide theoretical references for astronaut training and selection.Mental workload is influenced by many factors such as the task,environment,and operator skills.It is the main indicator for studying task performance and evaluating the skills of workers.The existing methods for evaluating mental workload are mostly based on observable observations of operators and measurement of physiological/psychological processes.The cognitive system is based on the theory of cognitive psychology and combines the results of neurobiological research.It provides a deep-level analysis and evaluation method for the study of human mental workload at the cognitive level.ACT-R is one of the cognitive systems that was studied earlier,relatively perfect and favored by researchers.Based on the ACT-R cognitive system,this paper proposes a new method for evaluating mental workload based on the proportion of resource consumption given the unit time interval.The first chapter gave the significance of the research background and cognitive system research.The second chapter introduced the current state of cognitive research.Based on the introduction of the existing cognitive system,the main ideas of the ACT-R cognitive framework were highlighted.The third chapter mainly described the ACT-R modeling of the person-controlled rendezvous and docking task.It focused on the model declarative knowledge,process knowledge extraction and construction process.The fourth chapter introduced the mental workload evaluation based on the ACT-R model and experimental data.The cognitive behaviors o f people's control meeting and docking tasks were mapped to brain area activities and the task's mental workload was evaluated based on the ratio of resource consumption per unit time interval.The fifth chapter summarized the research of this article and proposed the prospects for further research.The results showed that the proportion of the resources consumed in a given unit of time in the person-controlled rendezvous and docking task was a mental workload assessment,which was statistically related to the mental load predicted by the NASA-TLX subjective scale.Based on the ACT-R cognitive system,the human brain load could be effectively evaluated from the cognitive level and it was more objective and accurate than the traditional scale and physiologica l measurement method to evaluate the mental workload and had obvious advantages and application prospects.