Abstract
This article considers a distributed adaptive control scheme for a class of second-order leader-following multiagent systems with only position information as output. An auxiliary network for the agent network is modeled to estimate the unmeasurable velocity information and make the output-based distributed adaptive control protocol effective. Under the distributed adaptive control scheme based on the auxiliary network model, several distributed synchronization criteria are established, and the corresponding convergence analysis is provided based on the stability theory. Finally, several simulation examples are provided to conform to the presented criteria.