The Efficiency Evaluation Method And Application Of The Integrated Driving System

The efficiency of an integrated driving system refers to the ability to assist mariners to complete sail management tasks,handle events,control ship movements and states according to directions when ship sails in complicated water areas.The efficiency evaluation of an integrated driving system reflects the value of navigation,and provides a scientific basis for the designation,development,maintenance and usage of an integrated driving system.This thesis uses ADC method and AHP-fuzzy comprehensive evaluation method to study the efficiency of an integrated driving system.The main contents are as follows:Firstly,this thesis establishes the index for efficiency evaluation by analyzing the integrated driving system components' features according to relevant domestic and international standards,and builds the ability index according to functions and factors,combined with the index founding principles and methods.Secondly,this thesis divides the initial state of a certain type of an integrated driving system into 32 possible states depending on its composition and characteristics.Based on the normal operation and fault failure,the system state is divided into six categories.Then this thesis builds the availability vector expression with related concepts and calculation methods of system availability.It obtains system credibility matrix by combining the transfer change of system during the navigation task execution with credible concepts.Thirdly,this thesis calculates relative weights among certain indicators using AHP method and the system evaluation results of the importance of an integrated driving system's ability judged by experts in relevant fields.According to fuzzy comprehensive evaluation theory,and the evaluation results of a certain type of integrated driving systems' ability index,this thesis gets the solution subordinated vector of each index and obtains the evaluation results.Finally,this thesis gets the ultimate results of integrated driving systems' efficiency evaluation by applying ADC effectiveness evaluation method to unit availability,credibility and ability.