Results 61 to 70 of about 1,067 (222)
Sliding Mode Control in Aerospace Applications: A Survey
International Journal of Robust and Nonlinear Control, EarlyView.ABSTRACT Sliding mode control (SMC) enjoys robustness to matched and unmatched (in the case of minimum phase input‐output dynamics) bounded perturbations, and finite time convergence. Second‐order and higher‐order sliding mode control systems (2‐SMC/HOSMC) retain all the advantages of sliding mode control, but in addition can be applied to systems of ...
Yuri Shtessel, Christopher Edwards
wiley +1 more source
CONSIDERATIONS FOR THE PARAMETERISATION OF A CHATTER DETECTION ALGORITHM
MM Science JournalProcess instabilites due to the regenerative effect limit the material removal rate of cutting machine tools. A method developed at the Laboratory for Machine Tools and Production Engineering (WZL) at RWTH Aachen University reduces the experimental effort of determining stability limits for milling.
CHRISTIAN BRECHER +3 more
openaire +1 more source
International Journal of Robust and Nonlinear Control, EarlyView.ABSTRACT This paper establishes an implementation‐aware framework for Barrier Function Adaptation (BFA) and shows that discrete‐time realizations fundamentally alter the logic of final‐set adjustment. In particular, sufficient conditions are derived to preserve the key benefits of BFA (predefined performance, gain adaptation with uncertain perturbation
Luis Ovalle +3 more
wiley +1 more source
Vibrations reduction in milling by using singular spectral analysis
MATEC Web of Conferences, 2018 The main issue which limits the milling process efficiency is the emergence of the self-excited vibrations (“chatter”) during milling. The system “tool-workpiece” autooscillations lead to more rapid tool and machine units deterioration, the decrease in ...
Kuts Vladimir +2 more
doaj +1 more source
High‐Order Sliding‐Mode control for MIMO Systems
International Journal of Robust and Nonlinear Control, EarlyView.ABSTRACT This paper extends Lyapunov‐based homogeneous high‐order sliding‐mode control to a class of uncertain non‐square multi‐input multi‐output (MIMO) nonlinear systems with a well‐defined vector relative degree. The considered systems admit a normal‐form representation with an uncertain but full‐row‐rank input‐gain matrix.
Jaime A. Moreno, Angel Mercado‐Uribe
wiley +1 more source
Detection of auditory signals in quiet and noisy backgrounds while performing a visuo-spatial task
Noise and Health, 2016 Context: The ability to detect important auditory signals while performing visual tasks may be further compounded by background chatter. Thus, it is important to know how task performance may interact with background chatter to hinder signal detection ...
Vishakha W Rawool
doaj +1 more source
International Journal of Robust and Nonlinear Control, EarlyView.ABSTRACT Quadrupedal robots operating in unstructured environments require adaptive control systems that can handle diverse terrain conditions without prior surface characterization. This paper presents an integrated control architecture that combines Model Predictive Control (MPC) with adaptive impedance control and SINDy‐based model corrections for ...
Peter James McConnellogue +4 more
wiley +1 more source
Optimizing CNC machining: naive bayes classifier for achieving chatter-free stable turning
Journal of Materials Science: Materials in EngineeringThis paper presents a novel data-driven framework for chatter detection and classification in CNC turning using microphone-based acoustic signal acquisition.
Pankaj Gupta +5 more
doaj +1 more source
Data Acquisition and Chatter Recognition Based on Multi-Sensor Signals for Blade Whirling Milling
MachinesBladed components are essential in engines and propulsion systems, but their thin structures, complex geometries, and significant material removal rates during machining make them challenging to manufacture. This study investigates the chatter phenomenon
Xinyu Li, Riliang Liu, Zhiying Zhu
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Grinding Chatter Detection and Identification Based on BEMD and LSSVM
Chinese Journal of Mechanical Engineering, 2019 Grinding chatter is a self-induced vibration which is unfavorable to precision machining processes. This paper proposes a forecasting method for grinding state identification based on bivarition empirical mode decomposition (BEMD) and least squares ...
Huan-Guo Chen +5 more
doaj +1 more source