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

This is an open access article published by the IET under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0/)
Received 03/10/2018, Accepted 12/10/2018, Published 22/10/2018

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.

Inspec keywords: flexible structures; piezoelectric actuators; flexible manipulators; beams (structures); feedforward; vibration control; feedback; least mean squares methods

Other keywords: active vibration suppression; hybrid control systems; piezoelectric actuators; stainless steel beam; flexible robot arm simulation; tip mass; adaptive feedforward control systems; control performance; sensors; smart flexible piezoelectric beam; active vibration control; combined feedback and feedforward control systems; filtered-X variable step size least mean square algorithm; traditional feedforward filtered-X least mean square algorithm; hybrid FX-VSSLMS algorithm

Subjects: Robot and manipulator mechanics; Numerical analysis; Manipulators; Mechanical variables control; Vibrations and shock waves (mechanical engineering); Electric actuators and final control equipment; Interpolation and function approximation (numerical analysis); General shapes and structures

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