Results 11 to 20 of about 64,377 (317)

Optimal control of nonlinear systems with input constraints using linear time varying approximations [PDF]

Nonlinear Analysis, 2016
We propose a new method to solve input constrained optimal control problems for autonomous nonlinear systems affine in control. We then extend the method to compute the bang-bang control solutions under the symmetric control constraints.
Mehmet Itik
doaj   +3 more sources

Prediction of limit cycle oscillations in piecewise linear systems with multiple piecewise nonlinearities

IET Control Theory & Applications, 2021
Mathematical modelings of many electric and mechanical systems involve piecewise linear system. Piecewise linear system can possess a periodic solution called a limit‐cycle oscillation (LCO), which can seriously undermine the system performance ...
Yongeun Yoon, Eric N Johnson
doaj   +1 more source

Linear functional state bounding for positive singular systems with unbounded delay and disturbances varying within a bounded set

IET Control Theory & Applications, 2021
In this paper, the linear functional state bounding problem, which is considered in [25], is extended to the singular system with unbounded delay.
Nguyen Huu Sau
doaj   +1 more source

Variable gain switching exact differential observer‐based compensation control for servo system with backlash

IET Control Theory & Applications, 2021
This paper proposes a novel variable gain switching exact differential observer (SEDO) to deal with the state estimation of mechanical servo system with unknown backlash. In order to compensate unknown non‐linear backlash accurately, a switching backlash
Guofa Sun, Yaming Xu, Yan Wang, Gang Wang   +3 more
doaj   +1 more source

Tracking control of a robotic system with deferred constraints and actuator faults

IET Control Theory & Applications, 2021
This paper proposes an adaptive sliding mode tracking control for a robotic manipulator to guarantee a deferred performance under input non‐linearities and external perturbations.
Yu Zhang, Linghuan Kong, Shuang Zhang, Xinbo Yu, Pengxin Yang   +4 more
doaj   +1 more source

Realization of multivariable nonlinear systems via the approaches of differential forms and differential algebra [PDF]

, 2010
summary:In this paper differential forms and differential algebra are applied to give a new definition of realization for multivariable nonlinear systems consistent with the linear realization theory.
Moog, Claude H., Moog, Claude, Xia, Xiaohua, Moog, Claude, H., Zhang, Jiangfeng, Zhang, Jiangfeng Jeff   +5 more
core   +2 more sources

Virtual tracking control of underwater vehicles based on error injection and adaptive gain

IET Control Theory & Applications, 2021
An improved virtual tracking control scheme is proposed based on error injection and adaptive gain for underwater vehicles in the presence of a large initial tracking error and external disturbances.
Xing Liu, Mingjun Zhang, Feng Yao, Baoji Yin   +3 more
doaj   +1 more source

Nonsquare Spectral Factorization for Nonlinear Control Systems [PDF]

, 2005
This paper considers nonsquare spectral factorization of nonlinear input affine state space systems in continuous time. More specifically, we obtain a parametrization of nonsquare spectral factors in terms of invariant Lagrangian submanifolds and ...
Schaft, Arjan J. van der, Petersen, Mark A., Schaft, Arjan J. van der,, Schaft, Arjan J. van der; id_orcid, Petersen, Mark A.,   +4 more
core   +1 more source

Optimal control of nonlinear systems: a predictive control approach [PDF]

, 2003
A new nonlinear predictive control law for a class of multivariable nonlinear systems is presented in this paper. It is shown that the closed-loop dynamics under this nonlinear predictive controller explicitly depend on design parameters (prediction time
Gawthrop, P. J., Wen-Hua Chen (1251597), Chen, W.H., Donald J. Ballance (7122098), Peter J. Gawthrop (7122794), Peter J Gawthrop, Wen-hua Chen, Ballance, D.J., Donald J. Ballance   +8 more
core   +1 more source

Saturated adaptive barrier sliding mode control with state‐dependent uncertainty limit

IET Control Theory & Applications, 2021
This paper proposed a saturated adaptive barrier sliding mode control (SABSMC) for disturbed systems with parameter uncertainty, external disturbance, and input saturation.
Haifeng Ma, Weixiang Liu, Yangmin Li, Zhanqiang Liu, Sukun Tian   +4 more
doaj   +1 more source