ADAPTIVE FUZZY OUTPUT FEEDBACK TRACKING CONTROL FOR A CLASS OF NONLINEAR TIME-VARYING DELAY SYSTEMS WITH UNKNOWN BACKLASH-LIKE HYSTERESIS

نویسندگان
Hasanpour Naseriyeh, Mohsen ID 1
Arabzadeh Jafari, Adeleh ID 2
Mohammadi, Seyed Mohammad Ali ID 3

1 Department of Electrical Engineering, Shahid Bahonar University, Kerman, Iran,

2 Department of Electrical Engineering, Shahid Bahonar University, Kerman, Iran,

3 Department of Electrical Engineering, Shahid Bahonar University, Kerman, Iran

doi
10.22111/ijfs.2017.3432
چکیده

This paper considers the problem of adaptive output feedback tracking control for a class of nonstrict-feedback nonlinear systems with unknown time-varying delays and unknown backlash-like hysteresis. Fuzzy logic systems are used to estimate the unknown nonlinear functions. Based on the Lyapunov–Krasovskii method, the control scheme is constructed by using the backstepping and adaptive technique. The proposed adaptive controller guarantees that all the closed-loop signals are semiglobally uniformly ultimately bounded and the tracking error can converge to a small neighborhood of the origin. Finally, Simulation results further show the effectiveness of the proposed approach.

کلیدواژه‌ها
Adaptive fuzzy control, Backstepping design technique, Backlash-like hysteresis, Nonstrict-feedback form, Nonlinear control