Results 41 to 50 of about 237,894 (262)

Automated and Controlled System for Analysis of Residual Limbs Thermograms of Transtibial Amputees

Applied Sciences, 2022
This work describes the development of a controlled cabin for capturing and analyzing thermal images. The motivation of such a device is to aid in the thermal image acquisition process within a confined space.
Mariana Ballesteros, Manuel A. Lopez-Perez, Rita Q. Fuentes-Aguilar, Pedro E. Chavarrias-Solano, Beatriz Alemón, Joel C. Huegel   +5 more
doaj   +1 more source

Forward Invariant Cuts to Simplify Proofs of Safety

, 2015
The use of deductive techniques, such as theorem provers, has several advantages in safety verification of hybrid sys- tems; however, state-of-the-art theorem provers require ex- tensive manual intervention.
Arechiga, Nikos, Deshmukh, Jyotirmoy, Kapinski, James, Krogh, Bruce, Platzer, Andre   +4 more
core   +1 more source

Output Feedback Roll Control for Moving-Mass Actuated Reentry Vehicle with Full State Constraints

Mathematics
A barrier Lyapunov function-based command filtered output feedback controller is proposed for the roll control of moving-mass actuated reentry vehicles challenged by strong nonlinearities, state constraints, and unmeasurable states.
Jingzhong Zheng, Guangyu Zou, Maria Sergeevna Selezneva, Xianbo Chen   +3 more
doaj   +1 more source

Active Sampling-based Binary Verification of Dynamical Systems

, 2018
Nonlinear, adaptive, or otherwise complex control techniques are increasingly relied upon to ensure the safety of systems operating in uncertain environments. However, the nonlinearity of the resulting closed-loop system complicates verification that the
Ali A., Anguita D., Bishop C. M., Brinker K., Hoxha B., Montgomery D. C., Platt J., Quindlen J. F., Scholkopf B., Settles B., Tipping M. E., Vapnik V. N.   +11 more
core   +1 more source

Asymmetric Barrier Lyapunov Function-Based Wheel Slip Control for Antilock Braking System

International Journal of Aerospace Engineering, 2015
As an important device of the aircraft landing system, the antilock braking system (ABS) has a function to avoid aircraft wheels self-locking. To deal with the strong nonlinear characteristics, complex nonlinear control schemes are applied in ABS ...
Xiaolei Chen, Zhiyong Dai, Hui Lin, Yanan Qiu, Xiaogeng Liang   +4 more
doaj   +1 more source

Control Strategies for the Fokker-Planck Equation [PDF]

, 2017
Using a projection-based decoupling of the Fokker-Planck equation, control strategies that allow to speed up the convergence to the stationary distribution are investigated.
Breiten, Tobias, Kunisch, Karl, Pfeiffer, Laurent   +2 more
core   +2 more sources

Risk‐aware safe reinforcement learning for control of stochastic linear systems

Asian Journal of Control, EarlyView.
Abstract This paper presents a risk‐aware safe reinforcement learning (RL) control design for stochastic discrete‐time linear systems. Rather than using a safety certifier to myopically intervene with the RL controller, a risk‐informed safe controller is also learned besides the RL controller, and the RL and safe controllers are combined together ...
Babak Esmaeili, Nariman Niknejad, Hamidreza Modares   +2 more
wiley   +1 more source

Identifying rare chaotic and regular trajectories in dynamical systems with Lyapunov weighted path sampling

, 2010
Depending on initial conditions, individual finite time trajectories of dynamical systems can have very different chaotic properties. Here we present a numerical method to identify trajectories with atypical chaoticity, pathways that are either more ...
Benettin, Bolhuis, Bolhuis, Chirikovr, Christoph Dellago, Contopoulos, Cretegny, Dauxois, Dellago, Dellago, Dellago, Dellago, Dellago, Dellago, Dellago, Dvorak, Ezra, Fermi, Geyer, Hedges, Hoover, Komatsuzaki, Laio, Murray, Omelyan, Ott, Philipp Geiger, Posch, Shirts, Straub, Sándor, Sándor, Tailleur, Tanase-Nicola, Tanase-Nicola, Torrie, Weeks, Zabusky   +37 more
core   +1 more source

Barrier-Lyapunov Function based Dynamic Surface Control of Quad-Rotorcraft

IFAC-PapersOnLine, 2020
Abstract A novel framework is proposed in this paper for control of a quad-rotorcraft where hierarchical design is constructed via barrier Lyapunov function (BLF) combined with dynamic surface control (DSC). DSC solves the requirement of higher order differentiability of reference pose and avoiding the complexity that arises due to the “explosion of ...
Ranjan Dasgupta, Sayan Basu Roy, Shubhendu Bhasin   +2 more
openaire   +1 more source

Output Feedback Design for Parameter Varying Systems Subject to Persistent Disturbances and Control Rate Constraints

International Journal of Robust and Nonlinear Control, EarlyView.
ABSTRACT This paper develops a framework for designing output feedback controllers for constrained linear parameter‐varying systems that experience persistent disturbances. We specifically propose an incremental parameter‐varying output feedback control law to address control rate constraints, as well as state and control amplitude constraints.
Jackson G. Ernesto, Eugênio B. Castelan, Walter Lucia   +2 more
wiley   +1 more source