Stability analysis of decentralised robust adaptive control
Systems & Control Letters
Global boundedness of discrete-time adaptive control just using estimator projection
Automatica (Journal of IFAC)
Mathematical models for hysteresis
SIAM Review
Nonlinear control design: geometric, adaptive and robust
Nonlinear control design: geometric, adaptive and robust
Decentralized adaptive control using integrator backstepping
Automatica (Journal of IFAC)
Nonlinear and Adaptive Control Design
Nonlinear and Adaptive Control Design
Adaptive Control of Systems with Actuator and Sensor Nonlinearities
Adaptive Control of Systems with Actuator and Sensor Nonlinearities
Technical communique: On decentralized stabilization and structure of linear large scale systems
Automatica (Journal of IFAC)
Automatica (Journal of IFAC)
Decentralized adaptive output-feedback stabilization for large-scale stochastic nonlinear systems
Automatica (Journal of IFAC)
Brief paper: Decentralized adaptive control for large-scale time-delay systems with dead-zone input
Automatica (Journal of IFAC)
WLS-based partially decentralized adaptive control for coupled ARMAX multi-agent dynamical system
ACC'09 Proceedings of the 2009 conference on American Control Conference
Information Sciences: an International Journal
Automatica (Journal of IFAC)
Minimal Control Synthesis Adaptive Control of Continuous Bimodal Piecewise Affine Systems
SIAM Journal on Control and Optimization
Brief paper: Why are some hysteresis loops shaped like a butterfly?
Automatica (Journal of IFAC)
Information Sciences: an International Journal
Adaptive decentralised control of parallel DC-DC converter systems
International Journal of Systems, Control and Communications
Hi-index | 22.16 |
Due to the difficulty of handling both hysteresis and interactions between subsystems, there is still no result available on decentralized stabilization of unknown interconnected systems with hysteresis, even though the problem is practical and important. In this paper, we provide solutions to this challenging problem by proposing two new schemes to design decentralized output feedback adaptive controllers using backstepping approach. For each subsystem, a general transfer function with arbitrary relative degree is considered. The interactions between subsystems are allowed to satisfy a nonlinear bound with certain structural conditions. In the first scheme, no knowledge is assumed on the bounds of unknown system parameters. In case that the uncertain parameters are inside known compact sets, we propose an alternative scheme where a projection operation is employed in the adaptive laws. In both schemes, the effects of the hysteresis and the effects due to interactions are taken into consideration in devising local control laws. It is shown that the designed local adaptive controllers can ensure all the signals in the closed-loop system bounded. A root mean square type of bound is obtained for the system states as a function of design parameters. This implies that the transient system performance can be adjusted by choosing suitable design parameters. With Scheme II, the proposed control laws allow arbitrarily strong interactions provided their upper bounds are available. In the absence of hysteresis, perfect stabilization is ensured and the L"2 norm of the system states is also shown to be bounded by a function of design parameters when the second scheme is applied.