A High-Gain Observer-Based Pd Controller Design for Dynamic Positioning of Ships

Abstract

This paper addresses the problem of the dynamic positioning system of surface ships in the presence of constant environmental disturbances. In this paper we propose a high-gain observer-based PD controller to estimate unmeasured velocities of a surface ship. Lyapunov stability theory is applied to prove its stability. Finally, simulation is carried out using SIMULINK and appropriate results are obtained to illustrate the effectiveness and performance of proposed controller.

Robust fuzzy controller design for dynamic positioning system of ships

“…Thus, by solving these LMIs stability conditions, a PDC (Parallel Distributed Compensation) based fuzzy controller was obtained for stabilizing the T-S fuzzy models with multiplicative noises. Again, a PD controller based on high-gain observer for dynamic position systems of ships was proposed by [14]. The application of high-gain observer for the proposed controller in [14] offers a high ability to reject environmental disturbance.…”

“…Again, a PD controller based on high-gain observer for dynamic position systems of ships was proposed by [14]. The application of high-gain observer for the proposed controller in [14] offers a high ability to reject environmental disturbance. A number of studies (researches) on control systems design for dynamic positioning of ships have been successfully conducted and given in [2][3][4][5][6][7][8][9][10][11][12][13][14]25,28].…”

Dynamic positioning of ships based on robust fuzzy observer

“…Moreover, a DP controller based on multiplicative noise has been developed [17]. Also, a high‐gain observer (HGO) based on the proportional derivative control (PDC) technique for the DP system was developed [18]. Application of HGO in [18] offers a high capability to disturbance rejection.…”

“…Also, a high‐gain observer (HGO) based on the proportional derivative control (PDC) technique for the DP system was developed [18]. Application of HGO in [18] offers a high capability to disturbance rejection. Many studies concerning control design for the DP system of ships have been done and presented [2–23].…”

“…Application of HGO in [18] offers a high capability to disturbance rejection. Many studies concerning control design for the DP system of ships have been done and presented [2–23]. Consequently, it is clear that DP systems have constantly been advancing through decades in the effort of lessening DP control snags.…”