Dynamic modeling and stability analysis for the combined milling system with variable pitch cutter and spindle speed variation

G Jin, H Qi, Z Li, J Han - … in Nonlinear Science and Numerical Simulation, 2018 - Elsevier
Variable-pitch cutter and spindle speed variation are two well-known methods to suppress
milling chatter by disrupting regenerative effect. Considering their compatibility in practical …

On the simulation and spectral analysis of unsteady turbulence and transition effects in a multistage low pressure turbine

G Geiser, J Wellner, E Kügeler… - Journal of …, 2019 - asmedigitalcollection.asme.org
A nonlinear full-wheel time-domain simulation of a two-stage low pressure turbine is
presented, analyzed, and compared with the available experimental data. Recent …

Time delayed piecewise linear Mathieu equation: an analytical and numerical study

A Balaji, A Thani, KR Jayaprakash, CP Vyasarayani - Nonlinear Dynamics, 2024 - Springer
In this study, we consider analytical and numerical exploration of the dynamics of a weakly
nonlinear piecewise linear (PWL) Mathieu equation with a time delay. A study of such …

Pole placement for time-delayed systems using Galerkin approximations

SS Kandala, TK Uchida… - Journal of …, 2019 - asmedigitalcollection.asme.org
Many dynamic systems of practical interest have inherent time delays and thus are governed
by delay differential equations (DDEs). Because DDEs are infinite dimensional, time …

Delay compensation position tracking control of electro-hydraulic servo systems based on a delay observer

X Ding, G Shen, X Li, Y Tang - … Part I: Journal of Systems and …, 2020 - journals.sagepub.com
In this article, the position control problem of electro-hydraulic servo systems with feedback
signal transmission delay is studied. In order to improve the control accuracy of the system, a …

Analysis and Compensation Control of Engine Valve Response Delay Based on the Electro-Hydraulic Variable Valve Actuator

J Li, Y Lu, F He, G Zhou, L Miao - Machines, 2022 - mdpi.com
The time delay of variable valve actuators has a significant influence on engine valve lift
tracking performance. For camless hydraulic valve actuators, engine valve response is …

[HTML][HTML] Approximation and control of a class of distributed delay systems

Á Fehér, L Márton - Systems & Control Letters, 2021 - Elsevier
In this paper, we show that a linear system with distributed state delay can be approximated
by a linear delay-free system that has the same state dimension as the original system if a so …

Data Driven Approach to Determine Linear Stability of Delay Differential Equations Using Orthonormal History Functions

S Tiwari, J Shaik… - Journal of …, 2024 - asmedigitalcollection.asme.org
Delay differential equations (DDEs) appear in many applications, and determining their
stability is a challenging task that has received considerable attention. Numerous methods …

Spurious roots of delay differential equations using Galerkin approximations

SS Kandala, S Samukham, TK Uchida… - Journal of Vibration …, 2020 - journals.sagepub.com
The dynamics of time-delay systems are governed by delay differential equations, which are
infinite dimensional and can pose computational challenges. Several methods have been …

Hybrid method-of-receptances and optimization-based technique for pole placement in time-delayed systems

SS Kandala, S Chakraborty, TK Uchida… - International Journal of …, 2020 - Springer
In this paper, we propose a pole-placement technique for second-order, time-delayed
systems that combines the strengths of the method of receptances and an optimization …