Robust vibration control at critical resonant modes using indirect-driven self-sensing actuation in mechatronic systems

► We present a new self-sensing actuation scheme for vibration control of piezoelectric actuators. ► We use op-amps as high-pass filters for higher bandwidth and SNR at nanometer resolution. ► We design an adaptive non-model-based control to compensate for vibrations using strain signals. ► We implement the proposed scheme on a PZT-actuated suspension of a commercial dual-stage HDD. ► Improvements of 50% and 75% in the vibration suppression at 5.4 kHz and 21 kHz are achieved.