Generalized proportional integral control. for periodic signals under active disturbance rejection approach

作者：Cortes Romero John; Ramos German A; Coral Enriquez Horacio^*

来源：ISA Transactions, 2014, 53(6): 1901-1909.

DOI：10.1016/j.isatra.2014.07.001

• Active disturbance rejection control
• GPI control
• Disturbance observers
• Repetitive control
• Periodic disturbances

Conventional repetitive control has proven to be an effective strategy to reject/track periodic signals with constant frequency; however, it shows poor performance in varying frequency applications. This paper proposes an active disturbance rejection methodology applied to a large class of uncertain flat systems for the tracking and rejection of periodic signals, in which the possibilities of the generalized proportional integral (GPI) observer-based control to address repetitive control problems are studied. In the proposed scheme, model uncertainties and external disturbances are lumped together in a general additive disturbance input that is estimated and rejected on-line. An illustrative case study of mechatronic nature is considered. Experimental results show that the proposed GPI observer-based control successfully rejects periodic disturbances even under varying speed conditions.

• 出版日期2014-11