Actuator Allocation and Multi Input Multi Output Controller Synthesis Method for Active Structural Acoustic Control System in Vehicle Cabin

Abstract

Reduction of noise in a car cabin due to road irregularities has been a subject of research for many years. For reducing such noise, we proposed H₂-based active structural acoustic control method that used a road noise estimation model and we verified its feasibility on a test bench. In this paper, we propose a road noise reduction control method in driving condition. The structure of the control system, the method to design actuator allocation, and the generalized plant and weighting functions for MIMO H₂ controller synthesis are proposed. The proposed methods were verified in the computer simulation results and the driving experimental results.