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Ergonomic evaluation of DSV cockpit console based on comprehensive decision making method

Qi GUO, Chengqi XUE, Haiyan WANG, Mingjiu YU
2018 Journal of Advanced Mechanical Design, Systems, and Manufacturing  
Introduction Deep-sea human occupied vehicle (DSV) is mainly used to perform underwater detection, underwater exploration, marine development and rescue missions, it plays an increasing significant role in the research and exploitation of ocean. The cockpit is an important part of DSV, it is the main work and active region for operators and researchers. All the display equipment, operating equipment, oxygen supply system and seats are arranged in the limited space which is sphere with a
more » ... here with a diameter of 2 meters around [Kohnen, 2005 , Shepard, 2001 . The console has the function of nerve center in DSV cockpit, there are all kinds of control and display devices which are playing important role in the work process of DSV. The designers usually arrange a variety of information components in the control area according to the layout specification and mission requirements. Thus, to increase operate performance and work efficiency, the console ergonomic evaluation is a pivotal decision process and has become a very fundamental part of the cabin layout design. At present, there is no research on the ergonomic layout evaluation of DSV cockpit console, and for the existing ergonomic evaluation methods, the application in the cockpit of military aircraft is relatively consistent mostly based on view distribution [Brody,1993], and many other cockpit consoles are also based on these methods as a basis for "transplantation". But in fact, an optimal layout of the cabin console needs not only to consider the scientificity and rationality of the display device for the operator's information feedback, it is also necessary to ensure that operators can manipulate the manipulators comfortably and accurately, and these two parts are interrelated and interacting, it is impossible to get a correct and valuable result by evaluating only a single factor. Besides, the design concepts and design requirements of DSV cockpit console are different with aircrafts. Firstly, the space structure is different, unlike the heterogeneous cabin of the aircraft, the DSV cabin has spherical shape, and the observation window of DSV cabin is much smaller than the aircraft. In order to meet the requirements of viewing when driving and working, the display of extravehicular video content in the cabin should be taken into consideration, while the aircraft is not required. And because DSV takes more than one person, the layout design and evaluation of the console should meet the convenience Abstract In order to guarantee the effectiveness of operation, ergonomic evaluation of deep-sea submersible vehicle (DSV) cockpit console has been widely researched and developed. However, due to the characteristics of information integration on the console, and the way of information interaction becomes more and more complicated currently. The existing evaluation method mostly based on partial attributes result in unilateral issue. Considering that ergonomic evaluation processes of DSV cockpit console involves multiple decisions for multifarious attributes under vague conditions, we established an evaluation system with an improved Delphi method based on experts' opinions and introduce a comprehensive ergonomic evaluation model by using the two-tuple weighted averaging operator (T-WA) and extended Vlsekriterijumska Optimizacijia I Kompromisno Resenje(VIKOR). Finally, an illustrated example on DSV cockpit console evaluation was performed, and the evaluation result was compared with other four typical evaluation method, it indicates the effectiveness and feasibility of the proposed method. of multi-user. Second, the task is different, DSV is mainly applied in the field of scientific research and rescue, its task is to shoot the underwater object by manipulating the external manipulator and the video recording device when diving up to the specified depth, so there are a number of display and control terminal on the DSV console. But the airplane is to fulfill other tasks under the premise of flight safety, such as launch, etc., so the main task of the aircraft's console is to achieve the safe flight of the aircraft. Therefore, the layout and evaluation method of the aircraft cabin console can't be applied directly to the DSV console. Although there are some comprehensive evaluation methods [Chen, et al.,2014 [Chen, et al., , zong,et.al,2014 which can better consider and evaluate the various qualitative and quantitative indicators, however, these comprehensive evaluation methods can't get rid of the randomness and the fuzziness of the experts' understanding in the evaluation process, and constant weight is mostly used in evaluation method, so the " buckets effect" may occur in the evaluation system, that is in ergonomics evaluation index system, giving different weights to the same index will make the difference of evaluation results, also it has a great influence on the final evaluation results when a certain index has a high degree of deterioration. In view of the above problems, it is necessary to establish a set of comprehensive evaluation system and an evaluation model in accordance with characteristics of DSV cockpit console facilities, operators and human-machine, so that we can reasonably and effectively design and evaluate the DSV console. Hence, the study on the DSV cockpit console ergonomic evaluation method is of practical significance. In consideration of the fact that the ergonomic performance evaluation of DSV cockpit console includes many uncertainty attribute, and it is a multi-target and multi hierarchy comprehensive evaluation decision problem. So a multiattribute group decision making method should be proposed to apply in the ergonomic evaluation process, such as combing the analytic hierarchy process (AHP) [ Saaty, 1994 , Izquierdo, 2015 and technique for order preference by similarity to ideal solution(TOPSIS) [Park, 2016] to evaluation performance [Zyoud, 2017] , the case ranking preferred by the Analytic network process [Nilashi, et al., 2016] , entropy weight method [Delgado and Romero, 2016] , multi objective optimization and genetic algorithm [Gossard, et al., 2013] and the elimination et choice translating reality [Kumar, et al.,2017] . However, in face of multiple attribute evaluation information of multiple alternatives, how to determine index weights is the key to aggregating evaluation information, especially for the evaluation problems of optimal scheme with incomplete or completely unknown attribute weight information, such as subjective preference and lack of theoretical data support, experts fail to provide accurate decision bases frequently. In this study, we employed a hybrid multi-attribute group decision making method to the performance evaluation of DSV cockpit console mainly based on two-tuple linguistic information processing and Vlsekriterijumska Optimizacija I Kompromisno Resenje (VIKOR), in which first put forward by Herrera [Herrera, 2000] and Opricovic respectively [Opricovic, 1998] , has been regarded as a compensatory aggregation method to deal with discrete uncertainty attribute decision issues. This method mainly to solve multi-attribute group decision making problems with multi-granularity linguistic phrases of index values and index weights. The specific evaluation process as shown in Fig.1: Figure1 . The detail flow chart of evaluation model
doi:10.1299/jamdsm.2018jamdsm0060 fatcat:abf5otubazdwpaskcumugxc6cu