On-line modeling and feedback compensation techniques for 3-D active noise control systems
The research work of this thesis concentrates on the three-dimensional (3-D) environment, which is a model of the real open rollover protection tractor. Threedimensional adaptive active noise control algorithms have been developed, which include adaptive FIR filter, adaptive FIR filter with feedback compensation, and adaptive IIR filter algorithms. The feedback effects have been solved by the adaptive feedback cancellation filter and adaptive IIR filter. On-line modeling of both the error paths and the feedback paths has been developed, analyzed and verified by computer simulations. The real-time experiment results show that the overall system and algorithm developed in this work are both practical and successful.