Narrow-band fluid borne noise attenuation using time-domain online control algorithms in a simple hydraulic system

Research output: Contribution to conferencePaper

Abstract

This paper describes the active attenuation of fluid borne noise (FBN) with several harmonic components in a simple hydraulic system. A pump with a fixed speed was used as the noise source and a fast-response servo valve was used as to generate the anti-noise signal. Different working conditions were achieved by adjusting the load valve at the end of hydraulic circuit, which affects the system's hydraulic impedance spectrum. Two different adaptive methods using filtered reference least mean square (FXLMS) notch filter with online identification algorithm in time-domain were used. However, the auxiliary white noise applied for system Online identification may increase the residual noise. It was found that FBN reflections from both ends of hydraulic circuit can change the dynamic response of the actuator. In addition to the experiments, Simulation work of active control of fluid borne noise in the simple hydraulic system was performed. The dynamic response of the hydraulic system with active noise control flow was described using, the method of characteristics (MOC). It was found that typically 20 dB attenuation could be achieved to reduce the target harmonic components of the fluid borne noise an insignificant level.
Original languageEnglish
Publication statusPublished - Apr 2009
Event7th International Conference on Fluid Power Transmission and Control (ICFP 2009) - Zhejiang University, Hangzhou, China
Duration: 7 Apr 200910 Apr 2009

Conference

Conference7th International Conference on Fluid Power Transmission and Control (ICFP 2009)
CountryChina
CityZhejiang University, Hangzhou
Period7/04/0910/04/09

Fingerprint

Hydraulics
Fluids
Dynamic response
Active noise control
Notch filters
Online systems
Networks (circuits)
White noise
Actuators
Pumps
Experiments

Cite this

Wang, L., & Johnston, D. N. (2009). Narrow-band fluid borne noise attenuation using time-domain online control algorithms in a simple hydraulic system. Paper presented at 7th International Conference on Fluid Power Transmission and Control (ICFP 2009), Zhejiang University, Hangzhou, China.

Narrow-band fluid borne noise attenuation using time-domain online control algorithms in a simple hydraulic system. / Wang, L; Johnston, D Nigel.

2009. Paper presented at 7th International Conference on Fluid Power Transmission and Control (ICFP 2009), Zhejiang University, Hangzhou, China.

Research output: Contribution to conferencePaper

Wang, L & Johnston, DN 2009, 'Narrow-band fluid borne noise attenuation using time-domain online control algorithms in a simple hydraulic system' Paper presented at 7th International Conference on Fluid Power Transmission and Control (ICFP 2009), Zhejiang University, Hangzhou, China, 7/04/09 - 10/04/09, .
Wang L, Johnston DN. Narrow-band fluid borne noise attenuation using time-domain online control algorithms in a simple hydraulic system. 2009. Paper presented at 7th International Conference on Fluid Power Transmission and Control (ICFP 2009), Zhejiang University, Hangzhou, China.
Wang, L ; Johnston, D Nigel. / Narrow-band fluid borne noise attenuation using time-domain online control algorithms in a simple hydraulic system. Paper presented at 7th International Conference on Fluid Power Transmission and Control (ICFP 2009), Zhejiang University, Hangzhou, China.
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