Active disturbance rejection control design for piezoelectric positioning system
WEI Wei
LI Dong-hai
ZUO Min
LIU Zai-wen
Abstract：Piezoelectric actuator are commonly used in nanopositioning system. However, nonlinear and multivalue properties, i.e. hysteresis, of piezoelectric materials, which are commonly taken in piezoelectric actuators, will decrease the accuracy of nanopositioning systems. In order to remove the influence of hysteresis, nonlinear and multivalue properties are viewed as the disturbance of system. Active disturbance rejection control (ADRC), a control approach which does not depend on accurate model of hysteresis and nanopositioning system, is designed to achieve the desired control object. Extended state observer is employed to estimate hysteresis, and then it can be compensated in real time. Nice control performance is acquired in the numerical simulations. From the simulation results, we may see that ADRC is able to cancel hysteresis and improve the accuracy of nanopositioning system effectively.
Keywords：piezoelectric actuatorhysteresisnanopositioningactive disturbance rejection control (ADRC)position-ing accuracy
Publication Date：2016-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：8( 1319-1326 )