Active Noise Control and Vibration

Active control systems have been widely developed in the last 20 years. The basic principle is well known : a secondary wave, 180° out of phase, is synthetized to interfere with the primary one. Active noise or vibration control therefore aims to reduce an existing noise or vibration, especially at low frequencies, where passive means are unefficient. The objective of this course is to introduce the basic principles and the main realizations in mechanics. Other topics are also investigated: active absorption, semi-active control, smart materials...

1- Active Noise Control 2- Adaptive algorithms 3- Energy in active systems. Local control/ global control 4- Semi-active and Active Control of Vibrations 5- LQG control - MIMSC control 6- Smart Structures 7- Vibro-acoustic Control 8- Active Control of Flow Instabilities