An Optimal Passive Buoyancy Compensation System for Deep-sea Gliders Based on GA

The variation of seawater density and hull deformation will affect the driven buoyancy of deep-sea gliders, resulting in unstable motion. This paper established a novel hybrid passive buoyancy compensation system based on three standalone systems in order to reduce the buoyancy change. To improve the performance, the genetic algorithm (GA) is introduced to optimize the design parameters of the novel system. Results from the simulation show that the buoyancy change is appreciably reduced by using the novel system, which is important to improve the endurance and stability of deep-sea underwater gliders.