This paper is concerned with sampled-data control of switched linear systems average dwell time switching under variable sampling. Since the subsystem could occur during sampling intervals while associated controller does not switch, asynchronous phenomenon arises. A new class functionals consisting multiple Lyapunov functions and looped developed to present sufficient conditions on exponential stabilization for such state feedback. The obtained results are verified by an F-18 aircraft.

This work examines applying deep reinforcement learning to a chemical production scheduling process account for uncertainty and achieve online, dynamic scheduling, benchmarks the results with mixed-integer linear programming (MILP) model that schedules each time interval on receding horizon basis. An industrial example is used as case study comparing differing approaches. Results show method outperforms naive MILP approaches competitive shrinking approach in terms of profitability, inventory...

Abstract The first enantioselective construction of a new class axially chiral naphthyl‐indole skeletons has been established by organocatalytic asymmetric coupling reactions 2‐naphthols with 2‐indolylmethanols (up to 99 % yield, 97:3 e.r.). This approach not only affords type heterobiaryl backbone, but also provides catalytic strategy for constructing biaryl scaffolds making use the C3‐electrophilicity 2‐indolylmethanols.

This paper presents the coordinated design of multiple FACTS supplementary damping controllers to improve system small-signal stability. A BMI-based multi-objective multi-model approach is formulated solve robust control problem. Two-step method proposed determine controller variables. Regional pole placement and effort optimization are set as objectives. An SVC a TCSC designed sequentially with minimized decoupling effort. Selection feedback signals for realized by evaluating modal residues...

This article is concerned with the sliding mode control (SMC) for stabilizing a switched linear system external disturbances and uncertain nonlinearities. The state sampling implemented by an event-triggered mechanism (ETM) sampled data are transmitted through limited-bandwidth digital channel. main challenge of such work comes from quantizer saturation quantization error in SMC design finite-level mismatched caused switch sampling. To solve above problem, we at first present ETM...

The Snow Goose Algorithm (SGA) is a new meta-heuristic algorithm proposed in 2024, which has been proved to have good optimization effect, but there are still problems that easy fall into local optimal and premature convergence. In order further improve the performance of algorithm, this paper proposes an improved (ISGA) based on three strategies according real migration habits snow geese: (1) Lead goose rotation mechanism. (2) Honk-guiding (3) Outlier boundary strategy. Through above...

Abstract The C3‐alkenyl‐substituted 2‐indolylmethanols have been designed as a new class of substrates for catalytic asymmetric interrupted Nazarov‐type cyclizations. In the presence chiral phosphoric acid mild Brønsted acid, cyclization with nucleophiles occurred smoothly to construct cyclopenta[ b ]indole frameworks in generally excellent diastereo‐ and enantioselectivities (up >95:5 dr, >99% ee). magnified image

This study investigates the input-to-state stability (ISS) for a class of discrete-time non-linear switched singular systems. Two novel ISS criteria are proposed based on multiple Lyapunov functions method. In one case that all subsystems stable but system may be destroyed by switching, average dwell time switching algorithm is applied to guarantee whole system. other can unstable, state-dependent rule designed stabilise and ensure Finally, simulation examples provided illustrate feasibility...

Abstract This article is concerned with the event‐triggered adaptive tracking control of switched systems uncertain nonlinearities and unknown gains. The switch can occur within two consecutive sampling instants may trigger new events that raise mismatch problem bring challenge to avoid Zeno behavior. To address these problems, we propose a novel codesign scheme composed switching mechanism mode‐dependent law. A logarithmic threshold strategy introduced into event triggering mechanism....

Summary This paper studies the problem of quantized output feedback stabilization for a disturbed discrete‐time switched system. With measurement, an extended state current estimator is constructed to estimate and disturbance. In presence switches disturbances, design quantization scheme becomes big challenge avoid quantizer saturation guarantee control precision. this setup, well‐applied time‐triggered method update policy dynamic parameter hard implement. We solve above by proposing novel...

This article investigates the finite-time stability (FTS) of switched nonlinear systems (SNSs) with state jumps. Our main concerns are twofold. One is that SNS only consists FTS subsystems. The other has both subsystems and exponentially stable (ES) Due to switches jumps, challenge study comes from estimation settling time synthesis different Lyapunov functions for FTS/ES Based on analytical-inductive method initial-value-dependent dwell-time approach, several criteria SNSs established....

In order to predict the radiation noise of vibrating shell straw crusher in design phase, computational fluid dynamics–discrete element coupling method is initially used simulate airflow–straw coupled flow field crusher, and pulsating pressure generated by applied inner surface crusher. Then, harmonic response analyzed, its results are be acoustic boundary condition. Finally, finite combined test methods vibration shell. The indicate that produced changes as excitation frequency rotor...

To address the decline or failure in autonomous learning capability of traditional transfer methods when training and test samples come from different machines, resulting low cross-machine fault diagnosis rates, we propose a cross-domain manifold structure preservation (CDMSP) method for diagnosing rolling bearing faults across machines. The CDMSP can induce space projection matrices source target domains more effectively. This maps high-dimensional features into low-dimensional manifold,...

<title>Abstract</title> This paper investigates the event-triggered control problem for a class of strict-feedback uncertain nonlinear systems with switching state constraints. The main challenges such work arise from two aspects: (1) is not constrained at all moments, so constraints on are fixed, resulting in switches between bounded and unbounded existing research more suitable (2) Due to presence constraints, we aim address these scenarios varying performance, addresses this solely via...