... and robustness of the proposed cascade control system. The stabilities of the inner and outer control loops were proved separately using a Lyapunov approach. 1 Corresponding author. e-mail:  L.Dong34@csuohio.edu 23 07 2021 21 02 2022 18 03 2022 LADRC NADRC pneumatic system...

...: ( a ) contact force f 1 and ( b ) orientation q e ( t ) 25 06 2018 21 08 2019 24 09 2019 flexible arms rolling constraint grasping and manipulation stability distributed parameter systems This paper studies a flexible robotic arm with a lightweight...

.... This approach allows the system to track a desired voltage using the maximum power point tracking (MPPT) algorithm while keeping the output current at a moderate level. The stability of the closed loop of the full system is demonstrated by means of Lyapunov theory. The simulation utilizes realistic PV array...

...Mohammad Tavazoei; Mohammad Hassan Asemani This paper focuses on the stability analysis of linear fractional-order systems with fractional-order 0 < α < 2 , in the presence of time-varying uncertainty. To obtain a robust stability condition, we first derive a new upper bound for the norm...

...; published online January 27, 2015. Assoc. Editor: Jwu-Sheng Hu. 07 03 2014 29 10 2014 27 01 2015 For quadratic stabilization of a linear system using state feedback, it was shown in Ref. [ 1 ] that the optimal static quantizer is logarithmic and the coarsest quantization density...

... shaft dynamic response (vibration), actuator mass and total actuator power losses. Levitation of the spinning rotor and dynamic stability are constraint conditions for the control law search. Nonlinearities include magnetic flux saturation, and current and voltage limits. Pareto frontiers were applied...

... of the double inverted pendulum model, as shown in Fig. 3 . This simple model will be used to develop the stabilizing control part. The model parameters are defined in Table 2 . Fig. 3 Simplified model of the TWMM (virtual double inverted pendulum) Table 2 Parameters description of DIPM...

... controller, which guarantees not only the asymptotically stability of the closed-loop system but also the cost function bound constraint, has been provided in terms of the feasible solutions to the LMI. The simulation examples are included to show the effectiveness of the proposed approach. References...

.... Editor: Eugenio Schuster. 15 09 2010 14 03 2013 The problem of stabilization of uncertain systems plays a broad and fundamental role in robust control theory. The paper examines a boundedness theorem for a class of uncertain systems characterized as having a decreasing Lyapunov...

... formula for the convergence rate. flocking stability convergence rate double-integrator dynamics x 1 ( i ) , x 2 ( i ) ∈ R m are the state variables and u i ∈ R m is the control signal of agent i . At each...

...Kenneth R. Muske; Hashem Ashrafiuon; Sergey Nersesov; Mehdi Nikkhah This paper presents an optimal sliding mode cascade control for stabilization of a class of underactuated nonlinear mechanical systems. A discrete-time, nonlinear model predictive control structure is used to optimally select...

... 22 09 2011 03 01 2012 03 01 2012 adaptive control control system synthesis convergence error analysis industrial control industrial plants nonlinear systems observers parameter estimation time-varying systems extended state observer uncertain systems stability...

... selection of parameters that guarantee stabilization and improve controller performance. The approximate analytical solution is verified through comparison with the exact numerical solution. The control performance predicted by the analytical solution is experimentally demo. closed loop systems control...

... enables us to parameterize K by a free matrix P 2   > 0, independent of the Lyapunov matrix P 1 , R , Q 1 , and Q 2 used for checking stability or performances directly. Under Definition 2, system (Σ c 1 ) is passive with γ p  > 0 if V · ( x t ) - 2 z...

... circuits. Stability is illustrated by comparing traditional circuits with the proposed circuit. The motivations, derivations, and proofs of the system dynamical stabilities are presented. Control algorithms including stability control and sliding to the desired working region are presented. Experiments...

...Jia Xu; Jitao Sun; Dong Yue In this paper, we introduce a new concept of stochastic finite-time stability for a class of nonlinear Markovian switching systems with impulsive effects. Based on the linear matrix inequality approach, sufficient conditions for the system to be stochastic finite-time...

... selected modes of full-order model will be attained to guarantee the stability of closed-loop system. References 1 Moore , B. C. , 1981 , “ Principal Component Analysis in Linear Systems: Controllability, Observability, and Model Reduction ,” IEEE Trans. Autom. Control , 26 ( 1 ), pp. 17...

... the computation of a suitable delayed time. The delayed time, which is based on the measured vibrations, is then employed in the trajectory planner to set the reference input. The stability of the controller is discussed and its effectiveness is proved by applying it to a four-bar planar linkage with flexible...

...Thomas E. Alberts; Aravind M. Hanasoge; Ashraf M. Omran This paper presents a simple analysis evaluating the stability threshold for magnetically levitated flexible structures using dissipative colocated controllers. It is shown that with such a control structure, the controller that stabilizes...

...Kaouther Laabidi; Rihem Farkh; Mekki Ksouri In this paper, we consider the control of time delay system by first order controller. By Using the Hermite-Biehler theorem, which is applicable to quasipolynomials, we seek a stability region of the controller for first order delay systems. 20 12...