| High-end marine engineering equipment is a necessary supporting condition for the rational development of abundant marine resources and the implementation of the maritime power strategy,and the efficient and safe operation of marine equipment is inseparable from the guarantee of heave compensation technology.The backwardness of related technologies in China and the many deficiencies of the existing heave compensation system have highlighted the necessity of studying it.This paper takes electro-hydraulic control system of secondary regulation heave compensation in marine winch as the research object,studies the working mechanism of the secondary unit and the factors affecting the flow pulsation rate,explores the energy-saving characteristics,influencing factors and laws of the system.The performance of the double closed loop three-rate optimization controller based on the BAS algorithm was verified,and an experimental platform was built to complete the heave compensation experiment.First,this paper introduced the principle of the heave compensation system,the defects of the existing technology and the secondary regulation technology,and condensed the research status in recent years briefly,put forward the research purpose of the subject,formulated the research content and plan pertinently,and explained the significance of the subject.Secondly,used AMESim’s HCD library to model the secondary unit including the oil distribution plate,piston,swash plate,cylinder and other components,and study the factors affecting the flow pulsation rate(oil bulk modulus,viscosity,temperature)and the law of change,reduce the flow pulsation of the secondary unit to ensure the system control performance;this study carried out energy-saving analysis of the system,built a system simulation model,researched system energy-saving characteristics and factors(Speed,wave period,system pressure,load quality,accumulator parameters)affecting energy recovery ratey by this model;then rationally designed the high-response controller to maximize the compensation rate(90%),the energy recovery rate(70%),and minimize the flow pulsation rate(15%).The multi-objective optimization problem is solved by the BAS algorithm,and the AMESim/Simulink co-simulation was used for verification.Finally,the construction and debugging of the experimental platform were carried out,the hydraulic cylinder is used to simulate the rise and fall of the waves,the principle of the electro-hydraulic control system of secondary regulation heave compensation in marine winch and the effectiveness of the control method were verified,and the torque and speed control experiments of the secondary unit were completed,this word laid the foundation for further experiment.In this paper,electro-hydraulic control system of secondary regulation heave compensation in marine winch was proposed to overcome the shortcomings of the existing active compensation,such as large energy consumption of active heave compensation,low precision of passive heave compensation and complex structure of active and passive heave compensation.It provides reference for relevant research in practical engineering application,and has great strategic significance to improve the core competitiveness of Chinese high-end marine equipment and accelerate the localization of related core components. |
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