All Outputs (18)

Adaptive sliding mode attitude control of 2-degrees-of-freedom helicopter system with actuator saturation and disturbances (2023)
Journal Article

The modelling uncertainties, external disturbance and actuator saturation issues will degrade the performance and even the safety of flight. To improve control performance, this study proposes an adaptive U-model based double sliding control (UDSMC)... Read More about Adaptive sliding mode attitude control of 2-degrees-of-freedom helicopter system with actuator saturation and disturbances.

Performance enhancement of vehicle suspension system with geometrically nonlinear inerters (2023)
Journal Article

This research investigates the nonlinear dynamics and performance enhancement of a suspension system using a diamond-shaped linkage with inerter (D-inerter). The proposed suspension system consists of two inerters embedded in a four-bar linkage mecha... Read More about Performance enhancement of vehicle suspension system with geometrically nonlinear inerters.

Model-free robust decentralised control of multi-input-multi-output nonlinear interconnected dynamic systems (2023)
Journal Article

This study presents a generalised framework for model-free robust decentralised control (MFRDC) of interconnected MIMO dynamic systems, with the goal of significantly reducing complexity in model-based design. A model-free robust sliding mode control... Read More about Model-free robust decentralised control of multi-input-multi-output nonlinear interconnected dynamic systems.

Vibrational energy transfer in coupled mechanical systems with nonlinear joints (2023)
Journal Article

This study investigates vibrational transfer and energy flow in nonlinearly coupled systems, each subjected to a harmonic force with different excitation frequency. A nonlinear joint having either smooth or non-smooth stiffness characteristics at the... Read More about Vibrational energy transfer in coupled mechanical systems with nonlinear joints.

Performance analysis of frictional inerter-based vibration isolators (2023)
Journal Article

Purpose: This study aims to gain an in-depth understanding of the effect of the inherent dry friction of inerter devices on the performance of non-linear frictional inerter-based vibration isolation system (NFI-VIS). Methods: The power flow analysis... Read More about Performance analysis of frictional inerter-based vibration isolators.

Performance enhancement by exploiting geometrical nonlinearity of inerters in a two-stage vibration isolator (2023)
Journal Article

This research proposes a two-stage vibration isolation system (TS-VIS) exploiting geometrical nonlinearity by inerters for performance enhancement. Lateral inerters are added to upper and lower stages creating geometric nonlinearity. The transmissibi... Read More about Performance enhancement by exploiting geometrical nonlinearity of inerters in a two-stage vibration isolator.

Vibration isolation performance enhancement using hybrid nonlinear inerter and negative stiffness based on linkage mechanism (2023)
Journal Article

Purpose: To suppress the low-frequency vibration of dynamic systems such as underwater vehicles, this research proposes a novel geometrically nonlinear vibration isolator using hybrid nonlinear inertial andnegative stiffness element. Methods: A sprin... Read More about Vibration isolation performance enhancement using hybrid nonlinear inerter and negative stiffness based on linkage mechanism.

Vibration power dissipation in a spring-damper-mass system excited by dry friction (2022)
Presentation / Conference Contribution

This study investigates the vibration transmission and power dissipation behaviour of a mass-spring-damper system mounted on a conveyor belt. Coulomb friction exists between the mass and the belt moving at a constant velocity and acts as the external... Read More about Vibration power dissipation in a spring-damper-mass system excited by dry friction.

Performance analysis of a nonlinear inerter-based vibration isolator with inerter embedded in a linkage mechanism (2022)
Journal Article

This study presents an inerter-based nonlinear vibration isolator with geometrical nonlinearity created by configuring an inerter in a diamond-shaped linkage mechanism. The isolation performance of the proposed nonlinear isolator subjected to force o... Read More about Performance analysis of a nonlinear inerter-based vibration isolator with inerter embedded in a linkage mechanism.

Enhanced suppression of longitudinal vibration transmission in propulsion shaft system using nonlinear tuned mass damper inerter (2022)
Journal Article

This study proposes the use of a novel nonlinear tuned mass damper inerter device in vibration suppression of the ship propulsion shafting system and evaluates its performance. The device consists of an axial inerter and a pair of lateral inerters to... Read More about Enhanced suppression of longitudinal vibration transmission in propulsion shaft system using nonlinear tuned mass damper inerter.

Tuning methods for tuned inerter dampers coupled to nonlinear primary systems (2022)
Journal Article

This study develops displacement- and kinetic energy-based tuning methods for the design of the tuned inerter dampers (TIDs) coupled to both linear and nonlinear primary systems. For the linear primary system, the design of the TID is obtained analyt... Read More about Tuning methods for tuned inerter dampers coupled to nonlinear primary systems.

Enhancing vibration isolation performance by exploiting novel spring-bar mechanism (2021)
Journal Article

This study investigates the use of a spring-bar mechanism (SBM) in a vibration suppression system to improve its performance. The SBM, comprising bars and springs, is configured with a conventional linear spring-damper isolator unit. The dynamic resp... Read More about Enhancing vibration isolation performance by exploiting novel spring-bar mechanism.

Suppression of vibration transmission in coupled systems with an inerter-based nonlinear joint (2021)
Journal Article

This study proposes an inerter-based nonlinear passive joint device and investigates its performance in suppression of vibration transmission in coupled systems. The joint device comprises an axial inerter and a pair of lateral inerters creating geom... Read More about Suppression of vibration transmission in coupled systems with an inerter-based nonlinear joint.

Forced vibration analysis of multi-degree-of-freedom nonlinear systems with the extended Galerkin method (2021)
Journal Article

In this study, the dynamic response behavior of a generalized nonlinear dynamic system is investigated using a newly proposed extended Galerkin method. The algebraic equations of vibration amplitudes are obtained through an integration of the weighte... Read More about Forced vibration analysis of multi-degree-of-freedom nonlinear systems with the extended Galerkin method.

Vibration transmission and power flow in impact oscillators with linear and nonlinear constraints (2019)
Journal Article

This paper investigates the vibration transmission and power flow behaviour of impact oscillators comprising linear or quasi-zero-stiffness (QZS) nonlinear constraints. The steady-state responses of the systems subjected to a harmonic excitation are... Read More about Vibration transmission and power flow in impact oscillators with linear and nonlinear constraints.

Quantification of vibration force and power flow transmission between coupled nonlinear oscillators (2019)
Journal Article

This paper presents a quantitative investigation on the level of vibration force and power flow transmission between linearly coupled nonlinear oscillators. Both analytical and numerical methods are employed for systematic examinations of the vibrati... Read More about Quantification of vibration force and power flow transmission between coupled nonlinear oscillators.

On vibration transmission in oscillating systems incorporating bilinear stiffness and damping elements (2018)
Journal Article

This paper investigates the dynamic characteristics and vibration transmission behaviour of a single oscillator and also coupled oscillators incorporating both bilinear stiffness and bilinear damping elements. Both harmonic balance analytical approxi... Read More about On vibration transmission in oscillating systems incorporating bilinear stiffness and damping elements.

On vibration transmission between interactive oscillators with nonlinear coupling interface (2018)
Journal Article

This paper investigates the dynamic characteristics and vibration transmission behaviour of interactive oscillators with nonlinearities at their coupling interface. Three different types of stiffness nonlinearities, i.e., hardening stiffness, softeni... Read More about On vibration transmission between interactive oscillators with nonlinear coupling interface.