Proposta de compensador PID para servo subwoofer com sensor de aceleração.

Abstract

The proposed method aims the design of a compensator for servo subwoofer systems, with negative feedback, using MEMS accelerometer, in order to reduce harmonic distortion. Knowing the linear parameters of loudspeaker and accelerometer, the method allows determining the characteristics of the compensator to obtain a specific reduction of harmonic distortion, make the correction of quality factor and improve the phase margin the feedback system. The results were validated by SPICE simulation using the nonlinear model of the DALI 311541 6 1/2” driver.