A5025337527- Vibration Control and Rheological Fluids
- Magnetic Bearings and Levitation Dynamics
- Structural Engineering and Vibration Analysis
- Seismic Performance and Analysis
- Innovative Energy Harvesting Technologies
- Acoustic Wave Phenomena Research
- Vehicle Dynamics and Control Systems
- Vibration and Dynamic Analysis
- Brake Systems and Friction Analysis
- Electric Power Systems and Control
- Ultrasonics and Acoustic Wave Propagation
- Engineering Applied Research
- Advanced MEMS and NEMS Technologies
- Electric Motor Design and Analysis
- Structural Health Monitoring Techniques
- Sensor Technology and Measurement Systems
- Electric and Hybrid Vehicle Technologies
Hong Kong Polytechnic University
2017-2024
Energy harvesting is particularly attractive for offshore structures owing to power supply challenges in regions. Offshore simultaneously experience substantial vibrations from combined wind-wave loads, thus necessitating structural vibration control. This study investigates the feasibility of a bistable energy-harvesting track nonlinear energy sink (EHTNES) designed wind turbines (OWTs) concurrently control and harvest (i.e., dual-function device). The EHTNES consists an electromagnetic...
With the increasing speeds of high-speed trains (HSTs), advanced suspension design are necessary to guarantee riding comfort and energy efficiency. In this study, a novel energy-regenerative semiactive secondary system HSTs corresponding control strategy, which have not been reported in literature, were developed using emerging electromagnetic damper cum harvester (EMDEH) with both vibration harvesting functions. The EMDEH can provide continuously tunable damping coefficients by semiactively...
With increasing transportation speed, the excessive vibrations of high-speed trains (HSTs) have become a critical issue to be solved. This study presents an innovative semiactive suspension system consisting magnetorheological (MR) damper in parallel with magnetic negative stiffness (NS) element. The proposed dampers, called MRNS are integrated into secondary HST improve riding comfort. design can effectively enhance vibration mitigation performance MR dampers and compensate for gap between...
Electromagnetic damper cum energy harvester (EMDEH) is an emerging dual-function device that enables simultaneous harvesting and vibration control. This study presents a novel energy-harvesting adaptive control application of EMDEH on the basis past development in passive The proposed comprises electromagnetic connected to specifically designed circuit (EHC), wherein EHC buck–boost converter with microcontroller unit (MCU) bridge rectifier. effectiveness damping validated numerically through...
Extensive research demonstrates that a semi-active damper in combination with inerter-based suspension could improve the ride comfort and road-holding performance of vehicles. However, inherent dynamics is always neglected. The underlying mechanism controller inerter different frequency ranges not well understood. Accordingly, this paper investigated quarter-car consisting paralleled nonlinear hysteretic magnetorheological (MR) passive inerter. To study influence strategies, clipped optimum...
Active suspension technique normally provides the best vibration mitigation performance at cost of high-energy consumption. In contrast, energy consumption a semi-active is much smaller than that an active suspension, whereas control compromised as well. Observing core issue caused such phenomenon existing force, unlike shall always oppose to relative motion actuator (i.e. clipping phenomenon). This paper subsequently proposes novel vehicle system incorporates passive negative stiffness (NS)...
The active suspension demonstrates superior control performance to its semiactive and passive counterparts, but the considerable power consumption has hindered wider application. This paper aims establish a self-powered narrow gap between suspensions in performances. previously (Li Zhu, 2022) developed bidirectional H-bridge circuit-based electromagnetic damper (HB-EMD), which was experimentally validated accomplish skyhook of SDOF isolation, integrated into secondary lateral 17-DOFs...
The previously proposed H-bridge circuit based electromagnetic damper (HB-EMD) that allows bidirectional current flow and enables active vibration control was experimentally validated to achieve self-powered skyhook of the SDOF isolator under harmonic excitation. feasible HB-EMD is promising in narrowing gap between conventional with substantial energy consumption semiactive compromised performance. However, its extension generic multiple-degrees-of-freedom (MDOF) system stochastic...