I. Introduction
Interest in studying complex networks has rapidly increased since the formulation of small-world and scale-free network models [1], [2], as a result of their utility to model many real systems [3]. Recently, significant research progress has been made in understanding synchronization (see [4]–[7] and references therein). When the network cannot synchronize by itself, a control input needs to be applied to achieve this goal. However, it is complicated or even impossible to incorporate control signals to all nodes of a huge-sized network of higher dimensional systems; due to this drawback, it was developed a strategy, which guarantees network synchronization applying local controllers to a small number of network nodes, named as “pinning control” [8]–[11]. As a result, many important topics related to this technique were investigated, including stability conditions for synchronization [12], [13], control methodologies (impulsive control [14], adaptive control [15], systems with time delays [16], intermittent control [17]), consensus and flocking control [18]–[21], as well as different applications [22]–[24].