TY - JOUR
T1 - Composite disturbance-observer-based control and variable structure control for non-linear systems with disturbances
AU - Wei, Xinjiang
AU - Zhang, Huifeng
AU - Guo, Lei
PY - 2009/10
Y1 - 2009/10
N2 - A novel type of control scheme combining the disturbance-observer-based control (DOBC) with variable structure control (VSC) is proposed for a class of continuous non-linear systems subject to disturbances. The disturbances are supposed to include two parts. One in the input channel is generated by an exogenous system with uncertainty, which can represent the harmonic signals with modelling perturbations. The other is supposed to have the bounded H2 norm. The disturbance observers based on regional pole placement and D-stability theory are presented, which can be designed separately from the controller design. By integrating DOBC with VSC laws, the disturbances can be rejected and the desired dynamic performances can be guaranteed for continuous systems in finite time with known and unknown non-linear dynamics, respectively. Simulations for a flight control system are given to demonstrate the effectiveness of the results and compare the proposed results with the previous schemes.
AB - A novel type of control scheme combining the disturbance-observer-based control (DOBC) with variable structure control (VSC) is proposed for a class of continuous non-linear systems subject to disturbances. The disturbances are supposed to include two parts. One in the input channel is generated by an exogenous system with uncertainty, which can represent the harmonic signals with modelling perturbations. The other is supposed to have the bounded H2 norm. The disturbance observers based on regional pole placement and D-stability theory are presented, which can be designed separately from the controller design. By integrating DOBC with VSC laws, the disturbances can be rejected and the desired dynamic performances can be guaranteed for continuous systems in finite time with known and unknown non-linear dynamics, respectively. Simulations for a flight control system are given to demonstrate the effectiveness of the results and compare the proposed results with the previous schemes.
KW - disturbance attenuation
KW - disturbance rejection
KW - disturbance-observer-based control
KW - non-linear systems
KW - variable structure control
UR - https://www.scopus.com/pages/publications/70349586039
U2 - 10.1177/0142331208099282
DO - 10.1177/0142331208099282
M3 - 文章
AN - SCOPUS:70349586039
SN - 0142-3312
VL - 31
SP - 401
EP - 423
JO - Transactions of the Institute of Measurement and Control
JF - Transactions of the Institute of Measurement and Control
IS - 5
ER -