J Shanghai Jiaotong Univ Sci ›› 2022, Vol. 27 ›› Issue (3): 375-382.doi: 10.1007/s12204-021-2341-1

• Naval Architecture and Ocean Engineering • Previous Articles     Next Articles

Two-Stage Scheme for Disturbance Rejection Hovering Control of Underwater Vehicles

BI Anyuana (毕安元), FENG Zhengpinga,b∗ (冯正平), ZHU Yuchena (朱昱琛), DENG Xua (邓 旭)   

  1. (a. School of Naval Architecture, Ocean and Civil Engineering; b. State Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University, Shanghai 200240, China)
  • Received:2019-07-25 Online:2022-05-28 Published:2022-06-23

Abstract: A two-stage model-independent hovering control scheme for underwater vehicles, which are subject to unknown yet constant external disturbance, to eliminate steady-state depth error is proposed. Proportional derivative (PD) state feedback control law is adopted as the ballast mass planner at the first stage for the vehicle to reach both hydrostatic balance and a steady depth. The residual depth error is then removed by an additional disturbance rejection control at the second stage. Global asymptotic stability of the whole system is guaranteed via Lyapunov approach. The effectiveness of the proposed scheme is illustrated by the simulation of diving control of an underwater vehicle with hydraulic variable ballast system.

Key words: underwater vehicles, hovering control, disturbance rejection, variable ballast systems, Lyapunov stability

CLC Number: