Adaptive Noise Control in One Dimensional Systems by Using a Pair of Sensor and Actuator

• Main Authors: Huang, Pei-Zon, 黃培榮
• Other Authors: Yang, Shih-Ming
• Format: Others
• Language: zh-TW
• Published: 1997
• Online Access: http://ndltd.ncl.edu.tw/handle/14406915696792579300

碩士 === 國立成功大學 === 航空太空工程學系 === 85 === Conventional noise control systems often utilize several sensors: at least one to measure the noise field and another one to measure the attenuated noise. However, theformer suffers from the so-called "acoustic feedback" problem that often leads to systeminstability. This thesis presents a new, simple and yet effective configuration by usingonly one sensor for active noise control. The controller is a finite impulse response (FIR)adaptive filter with the filtered-X LMS algorithm. Active noise control is conducted byfirst identifying the actuator dynamics. Both simulations and experiments show that thissingle sensor/actuator configuration can effectively attenuated the low-frequency noise.