Precarious employment has been associated with poor mental health. Moreover, increasing labour market precariousness may cause individuals to feel 'locked-in', in non-desired workplaces or occupations, out of fear of not finding a new employment. This could be experienced as a 'loss of control', with similar negative health consequences. It is plausible that the extent to which being in a non-d...

<span lang="EN-US">A new approach based on linear matrix inequality (LMI) technique for stabilizing the inverted pendulum is developed in this article. The unknown states are estimated as well system stabilized simultaneously by employing observer-based controller. In addition, impacts of uncertainties taken into consideration paper. Unlike previous studies, study unnecessary to satisfy b...

In this paper, a robust sliding mode observer (SMO) design problem is investigated for the purpose of reconstruction of actuator faults in a class of uncertain linear systems. A sufficient condition for the existence and the stability of the SMO is established by solving a set of linear matrix inequalities (LMIs). Also, a new design method for the robust SMO with H∞ techniques is proposed to gu...

An output-feedback observer is proposed in this paper to simultaneously estimate unknown states and disturbances of linear time invariant systems. The states are estimated using a Luenberger-like observer while the disturbance signals are estimated based on an inverse-dynamics motivated algorithm. The proposed schemes can be applied to a wide variety of disturbances since no disturbance model i...

A parametric approach to robust fault detection in linear systems with unknown disturbances is presented. The residual is generated using full-order state observers (FSO). Based on an analytical solution to a type of Sylvester matrix equations, the parameterization of the observer gain matrix is given. In terms of the design degrees of freedom provided by the parametric observer design and a gr...

In this note, we present a robust observer-based H, control design method for linear time-delay systems with norm-bounded time-varying uncertainties. Using the Riccati-equation-based approach we design observer-based feedback control laws, which guarantee the quadratic stability of the closed-loop control system and reduce the effect of the disturbance input on the controlled output to a prescr...

In this paper a design methodology is proposed to provide a constructive solution to the problem of designing a full order observer for linear time invariant systems subjected to unknown disturbances. Necessary conditions for existence of unknown input observers are stated and solved using generalized matrix inverse. The effect of unknown disturbance present in the system is eliminated from the...

*Correspondence: [email protected]; [email protected] 1School of Instrumentation Science and Opto-Electronics Engineering, Beihang University, Beijing, 100191, China 2School of Information and Control, Nanjing University of Information Science and Technology, Nanjing, 210044, China Abstract In this paper, a composite disturbance-observer-based control (DOBC) and H∞ control scheme is app...