Synchronization of Delay Memristive System with Piecewise Function based on a Disturbance Observer

This paper is concerned with synchronization of four-dimensional delay memristive system with piecewise function based on disturbance observers via adaptive controllers. In the consideration of disturbances in the response system, novel disturbance observers are investigated to estimate and compensate the disturbances. Meanwhile, by developing adaptive controllers, synchronization between the special drive and the corresponding response system is achieved. It is worth mentioning that this approach can be safely conducted to other systems with or without delays.