Autonomous electrode switching control for multimo

In existing research on multi-modal vibration suppression control, vibration control schemes using a single piezoelectric actuator primarily focus on known disturbance sources, and a significant deficiency remains in adaptive schemes capable of effectively handling randomly occurring modal disturbances. To address this, this study presents a vibration suppression control approach for three modes of the cantilever beam: bending, torsion, and lateral. Based on piezoelectric electrode configuration methods and a real-time spectral analysis framework, an Autonomous Electrode Switching Control (AESC) system has been developed to adaptively switch vibration suppression control architectures based on the system’s current vibration mode. To determine the system’s current vibration mode and switch the control circuit architecture (including controller parameters based on Positive Position Feedback Control), a multi-modal vibration monitoring system is designed for an ARM architecture, utilizing a Sliding-FFT framework. Additionally, an electrode configuration module is developed to enable rapid switching of circuit configurations. From simulation and experimental results, it is confirmed that the designed electrode configuration scheme can effectively control the three vibration modes of the cantilever beam. Additionally, through multi-modal active vibration control experiments, this study verifies that the developed AESC system is capable of real-time adaptation to varying external disturbance modes and can dynamically reconfigure its control architecture.