Wyniki wyszukiwania - BazTech

Ograniczanie wyników

Znaleziono wyników: 2

Liczba wyników na stronie

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych: high-gain observer

Sortuj według:

Ogranicz wyniki do:

State observer-based backstepping sliding mode control for electro-hydraulic systems

Tan Tan, Duc Nguyen Quang, Minh Le Ngoc, Manh Cuong Nguyen, Nguyen Danh Huy, Nguyen Tung Lam

Annals of Computer Science and Information Systems

2021

Vol. 27

77-80

In the paper, a control method using backstepping integrated with sliding mode control based on high-gain observer is proposed for an Electro-Hydraulic system (EHS). The observer is dedicated to estimate full-state variables by using output position feedback. In the initial step, the control design formula is constructed via backstepping technique. Following that, the control signal is designed based on sliding mode control (SMC) algorithm, and thus lead to the controller that has the advantages of these two control laws.

Nonlinear robust output feedback control of submersibles via modeling error compensation

Nambisan P. R., Singh S. N.

Systems Science

2007

Vol. 33, no 4

27-35

This paper treats the design of a nonlinear robust dive-plane control system for multivariable submersibles equipped with bow and stern hydroplanes. It is assumed that the vehicle's parameters and the hydrodynamic coefficients are not known, and that disturbance forces due to the sea wave are acting on the vehicle. For the design, the depth and pitch angle are chosen as output variables. Using nonlinear input-output (pitch angle and depth) map inversion, a robust nonlinear output feedback control law for the trajectory control of the pitch angle and depth id derived. For synthesizing the robust inverse control law, the unknown functions and unmeasurable variables are estimated using a high-gain observer. It is shown that in the closed-loop system, the asymptotic tracking of the depth and pitch angle trajectories is accomplished. Simulation results are presented which show precise dive-plane maneuvers in spite of uncertainty in the system parameters and disturbance forces due to the sea waves.