Results 61 to 70 of about 12,361 (269)

Optimal Homogeneous ℒp$$ {\boldsymbol{\mathcal{L}}}_{\boldsymbol{p}} $$‐Gain Controller

International Journal of Robust and Nonlinear Control, EarlyView.
ABSTRACT Nonlinear ℋ∞$$ {\mathscr{H}}_{\infty } $$‐controllers are designed for arbitrarily weighted, continuous homogeneous systems with a focus on systems affine in the control input. Based on the homogeneous ℒp$$ {\mathcal{L}}_p $$‐norm, the input–output behavior is quantified in terms of the homogeneous ℒp$$ {\mathcal{L}}_p $$‐gain as a ...
Daipeng Zhang, Benjamin Calmbach, Jaime A. Moreno, Johann Reger   +3 more
wiley   +1 more source

Influence of different position modal parameters on milling chatter stability of orthopedic surgery robots

Scientific Reports
This research is dedicated to exploring the dynamics of milling chatter stability in orthopedic surgery robots, focusing on the impact of position modal parameters on chatter stability.
Heqiang Tian, Bo Pang, Junqiang Liu, Debao Meng, Xiaoqing Dang   +4 more
doaj   +1 more source

Frequency‐Domain Analysis of External Signal Propagation Through Sliding Mode Control Systems With Dynamic Actuators

International Journal of Robust and Nonlinear Control, EarlyView.
ABSTRACT The importance of frequency domain methods in analysis and design of sliding mode (SM) control systems is mostly associated with chattering, where the advantages of these methods over state‐space and Lyapunov's methods are quite obvious.
I. M. Boiko
wiley   +1 more source

On the Chatter of Lathe Tool, : 1st Report. On the Cause of Chatter

Journal of the Society of Mechanical Engineers, 1936
筆者は数年前削り抵抗力並に刄先の振動を正確に測定する方法を考案し、旋盤バイトのびびりに就て実驗を行つたが、その當時は被削材の振動を測定することが出耒なかつたゝめ充分な結果を得ることが出耒なかつた。今度回轉してゐる被削材の撓振動を削り抵抗力と同時に慣性の影響なく正確に測定する方法を考察し、旋盤主軸の撓に起因するびびりに就て実驗を行ひ、びびりは削り抵抗力の変化の週期が旋盤一部の自己振動の週期と一致して共鳴を起し、被削材及び刄先の振幅が著しく増大するものであることを実驗的に明かにした。
openaire   +3 more sources

Chatter milling modeling of active magnetic bearing spindle in high-speed domain [PDF]

, 2011
A new dynamical modeling of Active Magnetic Bearing Spindle (AMBS) to identify machining stability of High Speed Milling (HSM) is presented. This original modeling includes all the minimum required parameters for stability analysis of AMBS machining. The
Arnaud, Lionel, Etienne Gourc, Lionel Arnaud, Sébastien Seguy, Gourc, Etienne, Seguy, Sébastien   +5 more
core   +1 more source

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

Modelling and Understanding of Chatter [PDF]

Recent analysis in chatter modelling of BTA deep-hole drilling consisted in phenomenological modelisation of relationships between the observed time series and appearance of chatter during the process. Using the newly developed MEWMA control chart [4, 5],
Wolfrum, P., Raabe, Nils, Webber, Oliver, Sandamirskaya, Y., Gepperth, A.   +4 more
core  

Mechanism and suppression of frictional chatter in high-efficiency elliptical vibration cutting [PDF]

, 2016
This research clarifies the mechanism of undesirable vibration observed during high-efficiency elliptical vibration cutting. Elliptical vibration cutting has recently been utilized in practice, and some applications require high-efficiency machining at ...
Jung, Hongjin, Shamoto, Eiji, Hayasaka, Takehiro   +2 more
core   +1 more source

Discrete Implementations Modify the Intuition of Final Set Adjustment in Barrier Function Based Control

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, Andrés González, Leonid Fridman, Meléndez Alfredo   +3 more
wiley   +1 more source

Effect of Cross Transfer Function on Chatter Stability in Plunge Cutting

Journal of Advanced Mechanical Design, Systems, and Manufacturing, 2010
An accurate analytical model for regenerative chatter vibration in plunge cutting is proposed. Effects of the cross transfer function and the cutting force ratio on chatter stability are considered in the proposed model.
Norikazu SUZUKI, Kohei NISHIMURA, Eiji SHAMOTO, Kiyoshi YOSHINO   +3 more
doaj   +1 more source