Active vibration control of smart flexible piezoelectric beam with a tip mass using hybrid FX-VSSLMS algorithm

Abstract

This study concerns adaptive feedforward and hybrid (combined feedback and feedforward) control systems for active vibration suppression of smart flexible beam with a tip mass. By analysing traditional feedforward filtered-X least mean square (FXLMS) algorithm and filtered-X variable step size least mean square (FX-VSSLMS) algorithm, a new hybrid FX-VSSLMS algorithm is developed to improve the control performance of feedforward controllers. A stainless steel beam with a tip mass is employed to simulate flexible robot arm with varying loads. Piezoelectric actuators and sensors are attached to the surface of the beam. Comparison experiments show the effectiveness and benefits of the proposed hybrid FX-VSSLMS method.

Keywords

• feedforward
• least mean squares methods
• beams (structures)
• piezoelectric actuators
• feedback
• vibration control
• flexible structures
• flexible manipulators
• active vibration control
• smart flexible piezoelectric beam
• tip mass
• hybrid FX-VSSLMS algorithm
• active vibration suppression
• filtered-X variable step size least mean square algorithm
• control performance
• stainless steel beam
• adaptive feedforward control systems
• combined feedback and feedforward control systems
• traditional feedforward filtered-X least mean square algorithm
• flexible robot arm simulation
• hybrid control systems
• piezoelectric actuators
• sensors