Results 11 to 20 of about 1,029,298 (227)

Global Uniform Ultimate Boundedness of Semi-Passive Systems Interconnected over Directed Graphs [PDF]

open access: yes, 2023
We analyse the solutions of networked heterogeneous nonlinear systems. We assume that the closed-loop interconnected systems form a network with an underlying connected directed graph that contains a directed spanning tree.
Maghenem, Mohamed   +3 more
core   +6 more sources

Designing Robust Control for Permanent Magnet Synchronous Motor: Fuzzy Based and Multivariable Optimization Approach

open access: yesIEEE Access, 2021
This article proposed a novel optimal robust control design approach to solve the uncertain parameter problem in the permanent magnet synchronous motor (PMSM) system by integrating the fuzzy set theory and system control theory.
Yunjun Zheng   +3 more
doaj   +1 more source

Robust Control for Nonlinear Delta Parallel Robot With Uncertainty: An Online Estimation Approach

open access: yesIEEE Access, 2020
A series of fractional robust trajectory tracking controls are proposed for the Delta parallel robot with uncertainty. For the high speed and heavy load, the Delta parallel robot could not ignore the influences of the high nonlinearity (by the dynamics ...
Ruiying Zhao, Linlin Wu, Ye-Hwa Chen
doaj   +1 more source

Nonlinear Ride Height Control of Active Air Suspension System with Output Constraints and Time-Varying Disturbances

open access: yesSensors, 2021
This paper addresses the problem of nonlinear height tracking control of an automobile active air suspension with the output state constraints and time-varying disturbances.
Rongchen Zhao   +4 more
doaj   +1 more source

A New Robust Tracking Control Design for Turbofan Engines: H∞/Leitmann Approach

open access: yesApplied Sciences, 2017
In this paper, a H ∞ /Leitmann approach to the robust tracking control design is presented for an uncertain dynamic system. This new method is developed in the following two steps. Firstly, a tracking dynamic system with simultaneous consideration
Muxuan Pan   +3 more
doaj   +1 more source

Uniform ultimate boundedness and periodicity in functional-differential equations

open access: yesTohoku Mathematical Journal, 1990
We consider the existence of periodic solutions of functional differential equations with infinite delay, (1) \(x'=f(t,x_ t)\). Let \((X,\| \cdot \|)\) be the space of bounded continuous functions \(\phi\) : (-\(\infty,0]\to R^ n\) with the supremum norm and let G denote the set of continuous nonincreasing functions g: (-\(\infty,0]\to [1,\infty ...
Burton, Theodore Allen, Zhang, Bo
openaire   +3 more sources

Adaptive-Adaptive Robust (A2R) Control for Uncertain Mechanical Systems: Rendering $\beta$ -Ultimate Boundedness

open access: yesIEEE Access, 2019
A novel control scheme, namely adaptive-adaptive robust (A2R) control is proposed for motion control of mechanical systems. The system contains uncertainty which is bounded while the bound may be unknown. Two designs of robust controls are proposed, with
Qinqin Sun   +3 more
doaj   +1 more source

Regulating Constraint-Following Bound for Uncertain Mechanical Systems: An Indirect Control Approach

open access: yesIEEE Access, 2020
This paper proposes an indirect approach of constraint-following control for mechanical systems with (possibly fast) time-varying uncertainty. It proposes to design controller for the system to render bounded constraint-following error.
Qinqin Sun   +3 more
doaj   +1 more source

Fuzzy-Set Theory Based Optimal Robust Design for Position Tracking Control of Permanent Magnet Linear Motor

open access: yesIEEE Access, 2019
In this paper, we design an optimal robust control to address the problem of position tracking control for permanent magnet linear motor (PMLM). The uncertainties in PMLM system, including parameters uncertainty and external disturbance, are nonlinear ...
Xiaoli Liu   +4 more
doaj   +1 more source

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