Detection of active noise control on the standard motorcycle exhaust Supra X 125 D using PVC pipe technique form Y

10th International Conference Numerical Analysis in Engineering

数学;工业技术

Isranuri, I.^1 ; Alfisyahrin^2 ; Nasution, A.R.^1

Department of Mechanical Engineering, University of Sumatera Utara, Medan

20155, Indonesia^1

Department of Electrical Engineering, University of Syiah Kuala Darussalam, Banda Aceh

23111, Indonesia^2

关键词: Active noise;    Engine speed;    Impermeable conditions;    Input resistors;    K omegas;    Primary noise;    PVC pipes;    Y-shaped;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/308/1/012011/pdf
DOI  :  10.1088/1757-899X/308/1/012011

学科分类：工业工程学

来源: IOP

【 摘 要 】

This detection aims to obtain noise reduction on the supra X 125D motorcycle exhaust by using the Active Noise Control Method. The technique is done using a Y-shaped PVC pipe to be bolted on the exhaust, which then branch Y PVC is placed loudspeaker with impermeable conditions. The function of this loudspeaker is as a secondary noise to counter the primary noise of the sound of exhaust motorcycle Supra X 125D. The sound generator in this study is the ISD 4004 module, which serves to generate noise to counter the source noise. How this ISD 4004 module works is by recording source noise then recording the source noise and then reversed the phase 180° by phase reversing circuit. So that, the noise generated by the sound generator will hit the source noise and encounter or such as addition of two different phase of sound will result in noise reduction when detected at the end of the Y-shaped PVC pipe. Inverted phase reversed using feed-back resistor 1 kΩ and 2 kΩ input resistors, 16V capacitor 2500μf and as amplifier using ICL 7660 and TL 702 CP. Test results on the highest 1000 rpm rotation engine speed on the Z axis of 2 dB, and at the highest 2000 rpm rotation engine speed also occurs on the Z axis of 1.5 dB.