Vibration reduction against modulated excitation using multichannel NLMS algorithm for a structure with three active paths between plates

Hong, Dongwoo; Kim, Byeongil

doi:10.1007/s12206-019-0910-0

Cited by 7 publications

(6 citation statements)

References 15 publications

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“…The response resulting from VS optimization was verified by comparing between virtual model operated at 2000 rpm and Simulation analysis, see Figure (9). The outcome results for velocity components show almost identical values, where the difference in values for ϒ x was about 2.91%, for ϒ y was about 4.78%, and for ϒ z was about 0.26%.…”

Section: Engine Response Verificationmentioning

confidence: 79%

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Hybrid methodology using balancing optimization and vibration analysis to suppress vibrations in a double crank-rocker engine

Albaghdadi¹,

Baharom²,

Sulaimana³

2022

Eksploatacja i Niezawodność – Maintenance and Reliability

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This study aims to present mathematical modelling to evaluate and analyze double crankrocker engine performance. The study suggests the use of two methods to reduce system vibration through balancing optimization and vibrational analysis. The combination of both methods acts as a verification method; besides it can be used as a tool for further system design enhancement and condition monitoring. The derived mathematical model is then used for balancing optimization to identify system shaking forces and moments, while variable speed is considered as an added parameter to evolve the optimization process. This factor shows better enhancement in reducing system shaking forces and moments compared to constant speed balancing method. Next, the system characteristics were concluded in terms of mode shapes and natural frequencies using modal and frequency response analysis, which give clear clue for secure system operational ground. Finally, the reduction in system vibrations was translated into engine’s centre of mass velocity, which evaluates balancing process effectiveness and indicate if further enhancement should be conducted.

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Section: Engine Response Verificationmentioning

confidence: 79%

“…The optimized values show less force transmission from engine block to the ground compared to original engine configuration. Similar work for vibration isolation and control in high speed, heavy-duty engines was introduced in [21], also by using active mount system in [9]. In their research, Sleesongsom et.…”

Section: Highlights Abstractmentioning

confidence: 95%

Hybrid methodology using balancing optimization and vibration analysis to suppress vibrations in a double crank-rocker engine

Albaghdadi¹,

Baharom²,

Sulaimana³

2022

Eksploatacja i Niezawodność – Maintenance and Reliability

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“…Through an active mount that integrates a rubber mount in series with a PZT (piezoelectric) stack actuator, Liette et al [18] highlighted the efficacy of a hybrid vehicle's power electric frequency band in reducing vibration and noise. Furthermore, Hong and Kim [19] conducted an analytical investigation on a mounting system that included a PZT stack actuator and rubber mount on a vehicle model with a plate structure and then also utilized one active mount and two rubber mounts; their findings verified the suitability of the system. In addition, Hong and Kim [20] developed a quantification technique to identify the best inputs for active structural routes analytically.…”

Section: Literature Searchmentioning

confidence: 89%

“…The response produced when a harmonic force is activated depends significantly on both the amplitude and phase values. The excitation and control forces can be expressed in a complex number form using Euler's law as Equations ( 18) and (19), respectively, because the harmonic force can be expressed in a complex number form using Euler's law.…”

Section: Secondary Pathway Input Quantificationmentioning

confidence: 99%

Bidirectional Multi-Spectral Vibration Control: Insights from Automotive Engine Mounting Systems in Two-Dimensional Structures with a Damaged Vertical Active Element

Hong,

Moon,

Kim

2024

Actuators

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Active mounting systems have become more prevalent in recent years to effectively mitigate structure-induced vibration across the automobile chassis. This trend is particularly evident in engine mounts. Considerable research has been dedicated to this approach owing to its potential to enhance the quietness and travel comfort of automobiles. However, prior research has concentrated on a limited spectrum of specific vibrations and noise control or has been restricted to vertical vibration control. This article describes the modeling, analysis, and control of a source structure employing a multidirectional active mounting system designed to closely simulate the position and direction of an actual automobile engine mount. A piezoelectric stack actuator is connected in series to an elastic (rubber) mount to form an active mount. The calculation of the secondary force required for each active mount is achieved through the application of harmonic excitation forces. The control signal can also reduce vibrations caused by destructive interference with the input signal. Furthermore, horizontal oscillations can be mitigated by manipulating the parameters via dynamic interconnections of the source structure. We specifically examined the level of vibration reduction performance in the absence of a vertical active element operation and determined whether the control is feasible. Simulation outcomes demonstrate that this active mount, which operates in both the vertical and horizontal directions, effectively mitigates excitation vibrations. Furthermore, a simulation was conducted to mitigate the vibrations caused by complex signals (AM and FM signals) and noise. This was achieved by monitoring the system response using an adaptive filter NLMS algorithm. Adaptive filter simulations demonstrate that the control efficacy degrades in response to complex signals and noise, although the overall relaxation trend remains unchanged.

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“…The combination of the Raspberry Pi 3 with sensors and actuators to attenuate vibration within the system link is proposed. Based on the Euler-Bernoulli beam theory, the analysis model of the structure was established, and the obtained modal parameters and frequency responses were verified through a finite element model and experimental data 13 . An active engine mount system with a hydraulic actuator is designed and controlled by an adaptive controller.…”

Section: Introductionmentioning

confidence: 99%

Optimal placement criteria of actuators for hybrid mounting system on a non-aligned plate structure

Qiu,

Hong,

Kim

2023

Sci Rep

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Electric motors in electric and hybrid vehicles generate mid-frequency noise and vibration. These factors cause drivers to experience discomfort while traveling. Active mounting techniques have been extensively researched and developed to effectively address this issue. The optimal placement of an active mounting system is essential for enhancing NVH performance when an active mounting system is utilized. In order to propose optimal location criteria for active paths, this paper concentrates on developing an analytical model based on both dynamic and static analysis. The secondary forces along active trajectories are mathematically determined when a structure is subjected to an excitation force. These locations are considered optimal for the active mounting system if the secondary forces are comparatively minimal. Simulations and feasibility experiments are also conducted in order to validate the proposed method. In addition, the results are compared with the case of beam structure. It has been determined through this procedure that the active path’s control performance will be enhanced if it is positioned in the optimal location and less control force is required than in the case of beam.

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Vibration reduction against modulated excitation using multichannel NLMS algorithm for a structure with three active paths between plates

Cited by 7 publications

References 15 publications

Hybrid methodology using balancing optimization and vibration analysis to suppress vibrations in a double crank-rocker engine

Hybrid methodology using balancing optimization and vibration analysis to suppress vibrations in a double crank-rocker engine

Bidirectional Multi-Spectral Vibration Control: Insights from Automotive Engine Mounting Systems in Two-Dimensional Structures with a Damaged Vertical Active Element

Optimal placement criteria of actuators for hybrid mounting system on a non-aligned plate structure

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