面向任务的载人潜水器人机交互信息结构分析

To construct a human-machine interaction (HMI) information structure model of manned submersible under complex tasks and improve the understanding of submersible cockpit designers on the cognitive process of oceanauts for mission information, this paper proposes a construction method of all elements hierarchical structure model with impact factors based on decision ladder (DL) and DEMATEL-ISM method. Taking a near-bottom operation of a manned submersible as the object, DL was used to analyze the task information demand and processing process of the oceanaut, and identify the elements and relations of HMI information. The comprehensive impact matrix and attribute eigenvalues were calculated based on DEMATEL. Combined with the research purpose, the threshold calculation method of the overall impact matrix and the discriminant formula of the reachability matrix were improved to obtain the reachability matrix containing impact factors. Then, a stable cause-effect hierarchy structure was extracted by the method of anti-rotation hierarchy extraction, and a fuzzy operator pair was introduced to calculate the skeleton matrix with influence value. The HMI information structure model containing influence value was constructed by combining the hierarchical structure. Results show that a six-layer directed weighted structure model consisting of 31 interactive information elements and their relations was obtained, and the effectiveness of the proposed method in ensuring node integrity, optimizing the hierarchical structure, and quantifying factor relations was proved through scheme comparison. The obtained model defines the attribute characteristics, causative relationship, and causative degree of HMI information elements, which has good explanatory power for the HMI information processing process based on the cognition of the oceanaut under complex tasks and can provide theoretical basis for the design of HMI information of manned submersible cabin.